JP2019199790A - Superstructure member removal facility, superstructure member replacement facility, superstructure member removal method, and superstructure member replacement method - Google Patents

Abstract

To achieve miniaturization of heavy machinery, simplification of venting facility, efficiency of removal of superstructure members and construction work even for viaducts with high ground clearance.SOLUTION: A superstructure member removal facility can be used to remove from a bridge 100 an existing superstructure member 110 in a predetermined area within a span 106 between bridge piers 102 and 104 adjacent to each other in a bridge axis direction of the bridge 100. The superstructure member removal facility comprises a vertical rail 22 attached to each of the piers 102 and 104 in a vertical direction and located within the span 106 when viewed from a direction perpendicular to the bridge axis, and a lifting device 24 attached to each vertical rail 22 and movable along the vertical rail 22 to which it is attached, the lifting devices 24 being provided in the number sufficient to be able to lower the existing superstructure member 110 to be removed while supporting it.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a superstructure member removal facility, a superstructure member replacement facility, a superstructure member removal method, and a superstructure member replacement method, and in particular, is movable along a rail attached to a pier in a vertical direction. The present invention relates to a superstructure member removal facility, a superstructure member replacement facility, a superstructure member removal method, and a superstructure member replacement method using a lifting device.

  Many of Japan's bridges are gradually being renewed, and technological development of bridge replacement methods has become an important issue. For this reason, many new technologies relating to bridge replacement have been proposed.

For example, Patent Document 1 discloses a jack disposing step of disposing a jack below an existing bridge girder, a supporting step of supporting the existing bridge girder by the jack and cutting a fulcrum portion of the existing bridge girder, and the existing bridge girder. A bridge girder comprising: a bridge girder arranging step of arranging a new bridge girder thereon; and a step of lowering the existing bridge girder and the new bridge girder by the jack and erection of the new bridge girder on a pier. A replacement method has been proposed. And, according to this bridge girder replacement method, it is described in Patent Document 1 that the construction period can be shortened because the removal work of the existing bridge girder and the construction work of the new bridge girder are simultaneously performed.

JP 2016-37775 A

  However, in the bridge girder replacement method described in Patent Document 1, in the current superstructure removal method and superstructure replacement method, when ventilating equipment and heavy machinery are used for high bridges with high ground clearance, The size has increased, leading to a longer construction period and increased costs.

  The present invention has been made in view of the above points, and even in the case of a high bridge with a high ground clearance, the downsizing of heavy machinery, the simplification of vent equipment, the removal and installation work of the superstructure member It is an object of the present invention to provide a superstructure member removal facility, a superstructure member replacement facility, a superstructure member removal method, and a superstructure member replacement method that can improve efficiency.

  This invention solves the said subject with the following superstructure member removal equipment, superstructure member replacement equipment, superstructure member removal method, and superstructure member replacement method.

  That is, the upper work member removal facility according to the present invention is an upper part that can be used when removing an existing upper work member in a predetermined area within a span between adjacent piers in the bridge axis direction of the bridge from the bridge. Construction member removal equipment, which is vertically installed on each pier adjacent to the bridge axis direction of the bridge, and is located within the span as viewed from the direction perpendicular to the bridge axis of the bridge A rail, and a lifting device attached to each of the vertical rails and movable along the vertical rail to which the rails are attached, and lowering the existing superstructure member to be removed while supporting it It is the superstructure member removal equipment characterized by providing the said raising / lowering apparatus of the number which can do.

  Here, in this application, “the span between the piers adjacent to the bridge axis direction of the bridge” means the fulcrum of the pier adjacent to the bridge axis direction of the bridge (the existing upper part) that supports the existing superstructure member of the bridge. It is a region between the fulcrum supporting the work member) and the fulcrum (the fulcrum supporting the existing upper work member). In the present application, it may be simply referred to as “span”.

  In addition, “It is a superstructure member removal facility that can be used to remove existing superstructure members in a predetermined area within a span between bridge piers adjacent to a bridge axis direction of a bridge from the bridge,” In the description, "the existing superstructure member in a predetermined region within the span between the piers adjacent to each other in the bridge axis direction of the bridge" means that the pier and the vertical rail do not overlap when viewed from above, It is a part of the existing superstructure member within the span. This shall be interpreted in the same way in the same description elsewhere in the present application.

  In addition, in the description of “up and down rail attached to each of the piers adjacent to the bridge axis direction of the bridge in the up and down direction”, “attached” is only when directly attached to the pier. It is a concept including the case where it is attached to the pier indirectly through other members. This shall be interpreted in the same way in the same description elsewhere in the present application.

  Specifically, for example, the following lifting device may be employed as the lifting device. That is, it includes an extendable jack and clamp devices attached to both ends of the jack, and is attached to the vertical rail by the clamp device, and the clamp device is connected to the vertical rail. You may employ | adopt the raising / lowering apparatus which can perform fixation and cancellation | release of the fixation repeatedly.

  As a more specific configuration of the superstructure member removal equipment, for example, the following configuration may be adopted. That is, a bridge shaft perpendicular member for receiving an upper work member extending in a direction perpendicular to the bridge axis of the bridge, which can support an end portion of the existing upper work member removed from the bridge, from the lower side, is the existing upper work member. A plurality of the vertical rails are arranged at intervals in a direction perpendicular to the bridge axis of each of the bridge legs adjacent to each other in the bridge axis direction of the bridge. The elevating device is attached to each of the plurality of vertical rails arranged at intervals in the direction perpendicular to the axis, and the elevating devices attached to the vertical rails support the bridge shaft perpendicular member for receiving the upper work member from below. Such a configuration may be adopted.

  The vertical rail is attached to a rail holding vertical member extending in substantially the same direction as the vertical rail, and is configured to be attached to the pier via the rail vertical member. May be.

  At least a part of the vertical downward load received by the vertical rail is transmitted to the ground without passing through the pier to which the vertical rail is attached, and the vertical rail is attached from the vertical rail. It is preferable that the load transmitted to the pier is a load within a range in which the safety of the pier is ensured.

  Here, in “at least part of the vertical downward load received by the vertical rail is transmitted to the ground without passing through the pier to which the vertical rail is attached”, “the vertical rail received by the vertical rail” The “direction downward load” includes not only the load transmitted to the vertical rail via another member but also the own weight of the vertical rail itself. Further, “at least a part of the vertical downward load received by the vertical rail is transmitted to the ground” means that at least a part of the vertical downward load is directly transmitted from the vertical rail to the ground. It is a concept that includes not only the case but also a case where at least a part of the downward load in the vertical direction is indirectly transmitted from the vertical rail to the ground via another member other than the bridge pier. These shall be interpreted in the same way in the same description in other parts of the present application.

  In the present application, the pier does not include a footing, and the pier means a part of a substructure above the footing.

  In the upper construction member removal equipment, at least a part of the vertical downward load received by the vertical rail is transmitted to the upper surface of the footing that supports the pier to which the vertical rail is attached and is transmitted to the ground. You may comprise as follows.

  Here, in “at least a part of the vertical downward load received by the vertical rail is transmitted to the upper surface of the footing that supports the pier to which the vertical rail is attached and transmitted to the ground”, "At least a part of the vertical downward load received by the vertical rail is transmitted to the upper surface of the footing and transmitted to the ground" means that at least a part of the vertical downward load is transferred from the vertical rail to the upper surface of the footing. Not only when it is transmitted directly to the ground but also at least part of the downward load in the vertical direction is indirectly transmitted from the vertical rail to the upper surface of the footing via other members than the pier. It is a concept that includes the case of being transmitted to the ground. This shall be interpreted in the same way in the same description elsewhere in the present application.

  As viewed from above, at least one of the positions perpendicular to the end of the existing upper work member to be removed and the position overlapping the end of the existing upper work member to be removed is post-placed. A pile may be provided, and the upper work member removal facility may be configured so that at least a part of a vertically downward load received by the vertical rail is transmitted to the ground via the post-stake pile.

  Here, in “at least a part of the vertical downward load received by the vertical rail is transmitted to the ground via the post-stake pile”, at least one of the vertical downward loads received by the vertical rail is described. "The part is transmitted to the ground via the post-stake pile" means that at least part of the downward load in the vertical direction is directly transmitted from the vertical rail to the post-pile pile and transmitted to the ground. Not only the case, but also the concept including the case where at least a part of the downward load in the vertical direction is indirectly transmitted from the vertical rail to the post-stake pile via another member other than the bridge pier and transmitted to the ground. It is. The post-stake pile is not a pile that is placed on the ground when the bridge is constructed and supports the bridge, but a pile that is placed on the ground after the bridge is constructed. This shall be interpreted in the same way in the same description elsewhere in the present application.

  As seen from above, at least one of the position in the direction perpendicular to the bridge axis with respect to the end of the existing upper work member to be removed and the position overlapping with the end of the existing upper work member to be removed, The upper work member removal equipment is configured so that at least a part of the vertical downward load received by the vertical rail is transmitted to the ground via the spread steel plate. Also good.

  Here, in “at least part of the vertical downward load received by the vertical rail is transmitted to the ground via the laying steel plate”, at least part of the vertical downward load received by the vertical rail Is "transmitted to the ground via the laying steel plate" only when at least part of the downward load in the vertical direction is directly transmitted from the vertical rail to the laying steel plate and transmitted to the ground. In other words, it is a concept including a case where at least a part of the downward load in the vertical direction is indirectly transmitted from the vertical rail to the laying steel plate via another member other than the bridge pier and transmitted to the ground. Further, the laid steel plate is a steel plate laid on the ground. These shall be interpreted in the same way in the same description in other parts of the present application.

  The upper construction member removal facility may be configured by further providing a bridge axis perpendicular direction connecting member that bridges and connects the vertical rails in a direction perpendicular to the bridge axis of the bridge.

  Here, in the “bridge axis perpendicular direction connecting member that bridges and connects the upper and lower rails in the direction perpendicular to the bridge axis of the bridge”, “bridge and connect” means the bridge axis perpendicular direction connecting member Is directly connected to the vertical rail, and the bridge axis perpendicular connecting member is bridged between the vertical rails, and the bridge axis perpendicular connecting member is another member. This is a concept including a case where the bridge-axis-right-direction connecting member is connected to the vertical rail via the bridge, and is connected by bridging between the vertical rails. This shall be interpreted in the same way in the same description elsewhere in the present application.

  In the bridge pier, a bridge member perpendicular to the bridge axis extending in the direction perpendicular to the bridge axis is disposed on the opposite side of the bridge with respect to the span in the bridge axis direction, and on the side of the bridge pier in the direction perpendicular to the bridge axis. A bridge shaft direction connecting member extending in the bridge axis direction is arranged so that the bridge shaft right angle direction connecting member, the opposite bridge shaft right angle direction connecting member and the bridge axis direction connecting member wind around the circumference of the bridge pier. The superstructure member removal equipment may be configured so as to be attached to the pier.

  Further, in each of the bridge piers, an opposite vertical rail extending in the vertical direction is attached to the opposite side of the bridge in the bridge axis direction, and the opposite vertical rail is attached to each of the opposite vertical rails. The above-mentioned superstructure member removal equipment may be constituted by attaching an elevating device that can be moved along.

  A facility for placing the existing superstructure member to be removed is provided below the superstructure member to be removed, and the superstructure removal equipment is provided so that the height of the platform is 1 m or more and 3 m or less from the ground surface. May be configured.

  In the superstructure replacement equipment according to the present invention, the existing superstructure member in a predetermined area within the span between the bridge piers adjacent to each other in the bridge axis direction of the bridge is removed from the bridge and a new superstructure member is constructed. It is a superstructure replacement equipment that can be used at the time, and is attached to each of the bridge piers adjacent to the bridge axis direction of the bridge in the vertical direction, and the span is viewed from the direction perpendicular to the bridge axis of the bridge. The existing superstructure for removal, comprising: an up-and-down rail positioned inside, and an elevating device attached to each of the up-and-down rail and movable along the up-and-down rail to which it is attached A superstructure member replacement facility comprising a number of the lifting devices capable of being lowered while supporting a member and capable of being lifted while supporting the newly constructed superstructure member. A.

  Specifically, for example, the following lifting device may be employed as the lifting device. That is, it includes an extendable jack and clamp devices attached to both ends of the jack, and is attached to the vertical rail by the clamp device, and the clamp device is connected to the vertical rail. You may employ | adopt the raising / lowering apparatus which can perform fixation and cancellation | release of the fixation repeatedly.

  As a more specific configuration of the superstructure member replacement facility, for example, the following configuration may be employed. That is, the end of the existing superstructure member to be removed from the bridge can be supported from below, and the end of the new superstructure member can be supported from below, in the direction perpendicular to the bridge axis of the bridge A bridge axis perpendicular direction member for receiving the upper work member extending to the lower side of each of the existing upper work members, and the vertical rails for each of the piers adjacent to the bridge axis direction of the bridge, A plurality of the bridges are arranged at intervals in the direction perpendicular to the bridge axis of the bridge, and the lifting device is attached to each of the vertical rails arranged at intervals in the direction perpendicular to the bridge axis of the bridge, and is attached to the vertical rails, respectively. You may employ | adopt the structure that the said raising / lowering apparatus supports the said bridge | cross-axis member perpendicular direction member member for upper construction member receiving from the downward direction.

  The vertical rail is attached to a rail holding vertical member extending in substantially the same direction as the vertical rail, and is configured to be attached to the pier via the rail vertical member. May be.

  At least a part of the vertical downward load received by the vertical rail is transmitted to the ground without passing through the pier to which the vertical rail is attached, and the vertical rail is attached from the vertical rail. Further, it is preferable that the superstructure member replacement facility is configured such that the load transmitted to the pier is a load within a range in which the safety of the pier is ensured.

  At least part of the vertical downward load received by the vertical rail is transmitted to the upper surface of the footing that supports the pier to which the vertical rail is attached and is transmitted to the ground. Replacement equipment may be configured.

  As viewed from above, at least one of the positions perpendicular to the end of the existing upper work member to be removed and the position overlapping the end of the existing upper work member to be removed is post-placed. The upper construction member replacement facility may be configured such that a pile is provided and at least a part of a vertically downward load received by the vertical rail is transmitted to the ground via the post-stake pile. .

  When viewed from above, at least one of the position in the direction perpendicular to the bridge axis with respect to the end of the existing upper work member to be removed and the position overlapping with the end of the existing upper work member to be removed, The upper construction member replacement facility is configured so that at least a part of a vertically downward load received by the vertical rail is transmitted to the ground via the laid steel plate. May be.

  The upper construction member replacement facility may be configured by further including a bridge axis perpendicular direction connecting member that bridges and connects the vertical rails in a direction perpendicular to the bridge axis of the bridge.

  In the bridge pier, a bridge member perpendicular to the bridge axis extending in the direction perpendicular to the bridge axis is disposed on the opposite side of the bridge with respect to the span in the bridge axis direction, and on the side of the bridge pier in the direction perpendicular to the bridge axis. A bridge shaft direction connecting member extending in the bridge axis direction is arranged so that the bridge shaft right angle direction connecting member, the opposite bridge shaft right angle direction connecting member and the bridge axis direction connecting member wind around the circumference of the bridge pier. The superstructure member replacement facility may be configured so as to be attached to the pier.

  Further, in each of the bridge piers, an opposite vertical rail extending in the vertical direction is attached to the opposite side of the bridge in the bridge axis direction, and the opposite vertical rail is attached to each of the opposite vertical rails. The above-mentioned superstructure replacement equipment may be configured by attaching an elevating device that can move along the upper part.

  A base for placing the existing superstructure member to be removed is provided below the superstructure member to be removed, and the superstructure member is replaced so that the height of the base is 1 m or more and 3 m or less from the ground surface. Equipment may be configured.

  The first aspect of the method for removing the upper work member according to the present invention is the removal of the upper work member for removing the existing upper work member in a predetermined area within the span between the bridge piers adjacent to each other in the bridge axis direction of the bridge from the bridge. A method for supporting an existing superstructure member in the predetermined area with the superstructure member removal equipment, and a bridge for the existing superstructure member in the predetermined area supported by the superstructure member removal equipment. A method for removing an upper work member, comprising: a separation step of separating from an upper work member, and a lowering step of lowering the existing upper work member separated in the separation step by the upper work member removal equipment.

  The second aspect of the method for removing the upper work member according to the present invention is the removal of the upper work member for removing the existing upper work member in a predetermined area within the span between the bridge piers adjacent to each other in the bridge axis direction of the bridge from the bridge. A method for supporting an existing upper work member in the predetermined area with the upper work member removing equipment provided with the gantry, and an existing structure of the predetermined area supported by the upper work member removing equipment. A separation step of separating the upper work member from the bridge; and a lowering placement step of lowering the existing upper work member separated in the separation step by the upper work member removal equipment and placing it on the gantry. It is the superstructure member removal method characterized by this.

  In the second aspect of the upper work member removal method, the existing upper work member placed on the gantry in the descending placement step may be dismantled and then removed.

  According to the first aspect of the method for replacing an upper work member according to the present invention, an existing upper work member in a predetermined area within a span between bridge piers adjacent to each other in the bridge axis direction of the bridge is removed from the bridge. An upper work member replacement method for installing a work member, wherein the existing upper work member in the predetermined region is supported by the upper work member replacement equipment and supported by the upper work member replacement equipment. A separation step of separating the existing superstructure member in the predetermined area from the bridge, a descent step of lowering the existing superstructure member separated in the separation step by the superstructure replacement device, and a descent step Carrying out the existing superstructure member lowered from the superstructure replacement equipment, and after the unloading process, installing the superstructure member on the superstructure replacement equipment Part In the ascending step and the ascending step, the ascending step of raising the newly constructed superstructure member placed in the superstructure member replacement facility in the superstructure member replacement facility in the superstructure member replacement facility, and the ascending step And a connecting step of connecting the raised new superstructure member to the bridge.

  According to a second aspect of the method for replacing an upper work member according to the present invention, an existing upper work member in a predetermined area within a span between bridge piers adjacent to each other in the bridge axis direction of the bridge is removed from the bridge. An upper work member replacement method for installing a work member, the supporting process of supporting an existing upper work member in the predetermined region with an upper work member replacement facility provided with the mount, and the upper work member construction. A separation step of separating the existing superstructure member in the predetermined area supported by the replacement facility from the bridge; and the existing superstructure member separated in the separation step is lowered by the superstructure replacement facility to form the platform A lower mounting step to be placed on, an unloading step of unloading the existing upper construction member placed on the gantry in the lowering placement step from the upper construction member replacement facility, and after the unloading step, Superstructure construction A new upper work member placing step for placing the new upper work member on the upper equipment, and the new upper work member placed on the upper work member replacement equipment in the new upper work member placing process. An upper work member replacement method comprising: an ascending step of raising by a work member replacement facility; and a connecting step of connecting the newly installed upper work member raised in the raising step to the bridge.

  In the second aspect of the upper work member replacement method, in the carrying out step, the existing super work member placed on the mount may be carried out after being disassembled.

  In the second aspect of the superstructure member replacement method, in the new superstructure member placement step, the new superstructure member is assembled on the gantry and placed on the superstructure member replacement facility. May be.

  According to the superstructure member removal equipment and superstructure member replacement equipment and superstructure member removal method and superstructure member replacement method according to the present invention, even if it is intended for a viaduct with a high ground clearance, Downsizing, simplification of venting equipment, removal of superstructure members and efficiency of construction work can be achieved.

About the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention, the front view which shows the state before lowering the existing superstructure member 110 to remove (I line view figure of FIG. 7). About the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention, the front view which shows the state after dropping the existing superstructure member 110 to remove (II line arrow view of FIG. 8) FIG. 9 is a front view of the superstructure member removal equipment 10 according to the first embodiment of the present invention, showing a state immediately before the lowered superstructure member 110 that has been lowered is lifted by the crane 200 after being cut (as viewed along line III in FIG. 9). (Figure) Sectional drawing (IV-IV line sectional drawing of FIG. 7) which shows the state before dropping the existing superstructure member 110 to remove about the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention. Sectional drawing (VV sectional view taken on the line VV of FIG. 8) which shows the state after dropping the existing superstructure member 110 to remove about the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention. Sectional drawing (VI-VI line of FIG. 9) about the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention, and the state just before lifting and removing with the crane 200 after cutting the existing superstructure member 110 lowered | hung (Cross section) Sectional drawing which shows the state before lowering the existing superstructure member 110 to remove about the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention (VII-VII sectional view taken on the line of FIGS. 1 and 4) Sectional drawing which shows the state after dropping the existing superstructure member 110 to remove about the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention (the VIII-VIII sectional view taken on the line of FIG. 2 and FIG. 5) Sectional drawing (IX of FIG. 3 and FIG. 6) which shows the state just before lifting the upper superstructure member 110 lowered | hung with the crane 200, and removing it about the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention. -IX sectional view) Sectional drawing which shows the state before lowering the existing superstructure member 110 to remove about the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention (XX sectional drawing of FIG. 1 and FIG. 4) Sectional drawing which expands and shows the lower part of FIG. XII section enlarged view of FIG. XIII-XIII line sectional view of FIG. XIV section enlarged view of FIG. The front view which looked at the lower part of the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention from the bridge axis orthogonal direction of the bridge 100 (XV-XV arrow line view of FIG. 11). The front view which looked at the upper part of the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention from the bridge axis orthogonal direction of the bridge 100 (XVI part enlarged view of FIG. 1) The side view which looked at the upper part of superstructure member removal equipment 10 concerning a 1st embodiment of the present invention from the direction of a bridge axis of bridge 100 XVIII-XVIII line sectional view of FIG. The figure which looked at the state where the up-down direction rail 22 was attached to the up-down direction member 28 for rail holding from the longitudinal direction The figure which shows typically the mechanism in which the clevis jack 24A of the raising / lowering device 24 and the H steel clamp 24B move along the up-down direction rail 22 (view seen from the direction perpendicular to the bridge axis) The figure which shows typically the mechanism in which the clevis jack 24A and the H steel clamp 24B of the raising / lowering device 24 move along the up-down direction rail 22 (view seen from the bridge axis direction). The side view (figure seen from the direction of a bridge axis) which shows typically one stage of each stage at the time of constructing superstructure member removal equipment 10 concerning a 1st embodiment of the present invention. The front view (figure seen from the bridge axis perpendicular direction) which shows typically one stage of each stage at the time of constructing superstructure member removal equipment 10 concerning a 1st embodiment of the present invention. The front view (figure seen from the bridge axis perpendicular direction) which shows typically one stage of each stage at the time of constructing superstructure member removal equipment 10 concerning a 1st embodiment of the present invention. The side view (figure seen from the direction of a bridge axis) which shows typically one stage of each stage at the time of constructing superstructure member removal equipment 10 concerning a 1st embodiment of the present invention. The front view (figure seen from the bridge axis perpendicular direction) which shows typically one stage of each stage at the time of constructing superstructure member removal equipment 10 concerning a 1st embodiment of the present invention. Front view showing temporary support bracket 90 (viewed from a direction perpendicular to the bridge axis) Side view showing temporary bracket 90 (viewed from the bridge axis direction) Sectional drawing (XXIX-XXIX sectional view taken on the line XXIX in FIG. 26) schematically showing one of the steps in constructing the superstructure member removal facility 10 according to the first embodiment of the present invention. The side view (figure seen from the direction of a bridge axis) which shows typically one stage of each stage at the time of constructing superstructure member removal equipment 10 concerning a 1st embodiment of the present invention. The front view (figure seen from the bridge axis perpendicular direction) which shows typically one stage of each stage at the time of constructing superstructure member removal equipment 10 concerning a 1st embodiment of the present invention. Sectional drawing which shows typically one step of each step at the time of constructing the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention (XXXII-XXXII sectional view taken on the line of FIG. 31). The side view (figure seen from the direction of a bridge axis) which shows typically one stage of each stage at the time of constructing superstructure member removal equipment 10 concerning a 1st embodiment of the present invention. The front view (figure seen from the bridge axis perpendicular direction) which shows typically one stage of each stage at the time of constructing superstructure member removal equipment 10 concerning a 1st embodiment of the present invention. Sectional drawing which shows typically one step of each step at the time of constructing the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention (XXXV-XXXV sectional view taken on the line of FIG. 34). In the superstructure member removal method according to the first embodiment, a state is shown in which the superstructure member receiving bridge shaft perpendicular member 26 supports a predetermined amount of the load of the existing superstructure member 108 before cutting from below. Front view In the superstructure member removal method which concerns on 1st Embodiment, the front view which shows the state immediately after cut | disconnecting the existing superstructure member 110 to remove from the bridge 100 In the superstructure member removal method which concerns on 1st Embodiment, the front view which shows the state which dropped the existing superstructure member 110 to remove and mounted on the mount frame 10C, 10D In the superstructure member removal method which concerns on 1st Embodiment, the front view which shows the state which cut | disconnected the existing superstructure member 110 to remove on the mount frame 10C, 10D The front view which shows the state just before lifting and removing the existing superstructure member 110 (110X, 110Y, 110Z) cut | disconnected on the mounts 10C and 10D with the crane 200 in the superstructure member removal method which concerns on 1st Embodiment. The front view which shows the state after removing the existing superstructure member 110 in the superstructure member removal method which concerns on 1st Embodiment. In the method for removing the superstructure member according to the first embodiment, the state after the removal of the existing superstructure members 112 and 114 remaining on the piers 102 and 104 is completed (the existing construction spanning between the pier 102 and the pier 104). Front view showing the state after all removal of the superstructure member 108 is finished) In the superstructure member replacement method according to the first embodiment, new superstructure members 162 and 164 (short new superstructure members 162 and 164 disposed at both ends of the span 106) are newly provided on the piers 102 and 104. Front view showing the installed state In the superstructure member replacement method according to the first embodiment, new superstructure members 160X, 160Y, and 160Z that constitute the superstructure member 160 are replaced by a crane (not shown) in the direction perpendicular to the bridge shaft for receiving the superstructure member. The front view which shows the state arrange | positioned on 26 and the mounts 10C and 10D In the superstructure member replacement method according to the first embodiment, a front view showing a state in which the new superstructure member 160X, 160Y, 160Z is connected by the attachment plate 160A and the new superstructure member 160 to be constructed is assembled. In the superstructure replacement method according to the first embodiment, the new superstructure member 160 is raised by the lifting device 24 and the new superstructure member 160 is disposed at a predetermined height position as the superstructure of the bridge 100. Front view showing The front view which shows the state which finished the connection to the bridge 100 of the newly installed superstructure member 160 in the superstructure member replacement method which concerns on 1st Embodiment. The front view which shows the state before lowering the existing superstructure member 110 to remove about the superstructure member removal equipment 50 which concerns on 2nd Embodiment of this invention. The front view which shows the state after lowering the existing superstructure member 110 to remove about the superstructure member removal equipment 50 which concerns on 2nd Embodiment of this invention. About the superstructure member removal equipment 50 which concerns on 2nd Embodiment of this invention, the front view which shows the state just before lifting and removing with the crane 200 after cutting the existing superstructure member 110 lowered | hung Sectional drawing which shows the state before lowering the existing superstructure member 110 to remove about the superstructure member removal equipment 50 which concerns on 2nd Embodiment of this invention (a cutting position is the cutting position shown to the IV-IV line of FIG. (Similar position) Sectional drawing which shows the state after dropping the existing superstructure member 110 to remove about the superstructure member removal equipment 50 which concerns on 2nd Embodiment of this invention (a cutting position is the cutting position shown to the VV line of FIG. 8) And the same position) Sectional drawing (cutting position is VI of FIG. 9) about the superstructure member removal equipment 50 which concerns on 2nd Embodiment of this invention, and the state just before lifting the existing superstructure member 110 lowered | hung with the crane 200 after cutting | disconnection. -Same position as the cutting position indicated by line VI) Sectional drawing which shows the cut surface which cut | disconnected the lower part of the superstructure member removal equipment 50 which concerns on 2nd Embodiment of this invention by the perpendicular plane parallel to a bridge-axis direction (a cutting position is the cutting position shown to the XIII-XIII line of FIG. And the same position) The front view which looked at the lower part of the superstructure member removal equipment 50 which concerns on 2nd Embodiment of this invention from the bridge axis perpendicular direction of the bridge 100 The front view which looked at the upper part of the superstructure member removal equipment 50 which concerns on 2nd Embodiment of this invention from the bridge axis orthogonal direction of the bridge 100 (LVI part enlarged view of FIG. 48). 56 is a cross-sectional view taken along line LVII-LVII in FIG. The front view which shows the state before lowering the existing superstructure member 110 to remove about the superstructure member removal equipment 70 which concerns on 3rd Embodiment of this invention. Sectional drawing (LIX-LIX line sectional drawing of FIG. 60) which shows the state before dropping the existing superstructure member 110 to remove about the superstructure member removal equipment 70 which concerns on 3rd Embodiment of this invention. Sectional drawing (LX-LX sectional view taken on the line LX-LX in FIGS. 58 and 59) showing the state of the superstructure member removal facility 70 according to the third embodiment of the present invention before the existing superstructure member 110 to be removed is lowered. Sectional drawing (LXI-LXI sectional drawing of the LXI-LXI line of FIG. 58 and FIG. 59) which shows the state before dropping the existing superstructure member 110 to remove about the superstructure member removal equipment 70 which concerns on 3rd Embodiment of this invention. 61 is an enlarged sectional view showing the lower part of FIG. LXIII part enlarged view of FIG. 62 is a cross-sectional view taken along line LXIV-LXIV in FIG. LXV part enlarged view of FIG. The front view which looked at the lower part of the superstructure member removal equipment 70 which concerns on 3rd Embodiment of this invention from the bridge axis perpendicular direction of the bridge 100 (LXVI-LXVI line arrow view of FIG. 62). The state of 1 step of the modification of the superstructure member removal method of 1st Embodiment (when using the rail facilities 600 and 602 when removing the existing superstructure members 112 and 114 left on the piers 102 and 104) Front view schematically Similarly, the front view which shows typically the state of 1 step of the modification of the superstructure member removal method of 1st Embodiment. LXIX section enlarged view of FIG. The state of 1 step of the modification of the superstructure member removal method of 1st Embodiment (when using the rail installations 600 and 602 when removing the existing superstructure members 112 and 114 left on the piers 102 and 104) Front view schematically Similarly, the front view which shows typically the state of 1 step of the modification of the superstructure member removal method of 1st Embodiment. Similarly, the front view which shows typically the state of 1 step of the modification of the superstructure member removal method of 1st Embodiment. Similarly, the front view which shows typically the state of 1 step of the modification of the superstructure member removal method of 1st Embodiment. One-step state of a modification of the superstructure member replacement method of the first embodiment (when the rail facilities 600 and 602 are used when newly installing the superstructure members 162 and 164 on the piers 102 and 104) Front view schematically showing Similarly, the front view which shows typically the state of 1 step of the modification of the superstructure member replacement method of 1st Embodiment.

  Hereinafter, with reference to drawings, the superstructure member removal equipment, superstructure member replacement equipment, superstructure member removal method, and superstructure member replacement method according to the embodiment of the present invention will be described in detail.

  In the following explanation, there is also an explanation in mind that the existing girders to be removed and the newly installed girders are made of steel, but the superstructure member removal equipment and superstructure according to the present invention are also included. In member replacement equipment, superstructure member removal method and superstructure member replacement method, superstructure members using materials other than steel for the main girder (for example, superstructure with concrete girder or composite girder as main girder) It is also possible to target a member.

(1) First Embodiment (1-1) Configuration of Superstructure Member Removal Facility According to First Embodiment FIGS. 1 to 3 show the superstructure member removal facility 10 according to the first embodiment of the present invention. It is a front view (front view seen from the bridge axis perpendicular direction of bridge 100) which shows the situation where existing superstructure member 110 in span 106 between adjacent piers 102 and 104 is removed. FIG. 1 is a front view (a view taken in the direction of the arrow I in FIG. 7) before the existing superstructure member 110 to be removed is lowered, and FIG. 2 is a state after the preexisting superstructure member 110 to be removed is lowered. FIG. 3 is a front view (III in FIG. 9) showing a state immediately before being lifted and removed by the crane 200 after cutting the lowered existing superstructure member 110. FIG. Note that the span 106 between the piers 102 and 104 is a region between the fulcrum 102A on the pier 102 and the fulcrum 104A on the pier 104 in detail. Further, the existing superstructure member 110 to be removed is cut from the bridge 100 by being cut at the cut surfaces 110A and 110B.

  4-6, the existing superstructure member 110 in the span 106 between the adjacent bridge piers 102 and 104 is removed using the superstructure member removal equipment 10 according to the first embodiment of the present invention. It is sectional drawing (sectional drawing which cut | disconnected the center part vicinity of the bridge axis right angle direction of the bridge 100 in the perpendicular plane parallel to the bridge axis direction of the bridge 100) which shows a condition. 4 is a cross-sectional view (a cross-sectional view taken along line IV-IV in FIG. 7) before the existing superstructure member 110 to be removed is lowered, and FIG. 5 is a diagram after the preexisting superstructure member 110 to be removed is lowered. FIG. 6 is a cross-sectional view showing the state (cross-sectional view taken along the line V-V in FIG. 8), and FIG. 6 is a cross-sectional view showing the state immediately before the lowered existing superstructure member 110 is lifted by the crane 200 after being cut and removed (FIG. 9). FIG. 6 is a sectional view taken along line VI-VI).

  7-9 removes the existing superstructure member 110 in the span 106 between the adjacent bridge piers 102 and 104 of the bridge 100 using the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention. FIG. 6 is a cross-sectional view (a cross-sectional view of the bridge 100 cut along a vertical plane parallel to the direction perpendicular to the bridge axis of the bridge 100) showing a situation where 7 is a cross-sectional view (cross-sectional view taken along the line VII-VII in FIGS. 1 and 4) before the existing superstructure member 110 to be removed is lowered, and FIG. 8 is a diagram in which the existing superstructure member 110 to be removed is lowered. 9 is a cross-sectional view (cross-sectional view taken along the line VIII-VIII in FIGS. 2 and 5) showing a state after the operation, and FIG. 9 shows a state immediately before the lowered existing superstructure member 110 is lifted by the crane 200 and then removed. FIG. 7 is a cross-sectional view (cross-sectional view taken along line IX-IX in FIGS. 3 and 6). 1 and 4 show the cutting position of the sectional view of FIG. 7, FIGS. 2 and 5 show the cutting position of the sectional view of FIG. 8, and FIGS. 3 and 6 show the cutting position of the sectional view of FIG. Thus, any of the cutting positions is not a position at which the pier 102 is cut, and in FIGS. 7 to 9, the portions other than the existing superstructure member 110 are the same as the side views seen from the bridge axis direction. . 3, 6, and 9, the main body of the crane 200 is not described, and only a hook or the like used for lifting is illustrated, and a reference numeral 200 is attached to the hook or the like.

  FIG. 10 uses the superstructure member removal equipment 10 according to the first embodiment of the present invention to remove the existing superstructure member 110 in the span 106 between the adjacent piers 102 and 104 of the bridge 100. It is sectional drawing (cross-sectional view which cut | disconnected the bridge 100 in the perpendicular plane parallel to the bridge axis orthogonal direction of the bridge 100) which shows a condition, and sectional drawing which shows the state before lowering the existing superstructure member 110 to remove (FIG. 5 is a cross-sectional view taken along line XX in FIG. 1 and FIG. As shown in FIG. 1 and FIG. 4 at the cutting position of the cross-sectional view of FIG. 10, FIG. 10 is cut along a vertical plane passing through the vicinity of the center of the web of the vertical rail 22 It is sectional drawing which shows the cross section obtained by doing.

  11 is an enlarged cross-sectional view of the lower part of FIG. 10, and FIG. 12 is an enlarged view of the XII part of FIG. 13 is a cross-sectional view taken along the line XIII-XIII in FIG. 11, and FIG. 14 is an enlarged view of a portion XIV in FIG.

  FIG. 15 is a front view of the lower part of the superstructure member removal facility 10 according to the first embodiment of the present invention as seen from the direction perpendicular to the bridge axis of the bridge 100 (a view taken along the line XV-XV in FIG. 11).

  16 is a front view of the upper part of the superstructure member removal equipment 10 according to the first embodiment of the present invention as viewed from the direction perpendicular to the bridge axis of the bridge 100 (XVI portion enlarged view of FIG. 1). It is the side view which looked at the upper part of superstructure member removal equipment 10 concerning a 1st embodiment of the present invention from the direction of a bridge axis of bridge 100. 18 is a cross-sectional view taken along line XVIII-XVIII in FIG. However, in FIG. 18, only the member of the main body 20 is shown.

  Hereinafter, the bridge axis direction of the bridge 100 may be simply referred to as “bridge axis direction”, and the bridge axis perpendicular direction of the bridge 100 may be simply referred to as “bridge axis perpendicular direction”.

  The superstructure member removal equipment 10 according to the first embodiment of the present invention includes a left side equipment 10A close to the pier 102, a right side equipment 10B close to the pier 104, and two mounts 10C and 10D. The left side equipment 10A and the right side equipment 10B of the superstructure member removal equipment 10 are arranged to face each other with a distance substantially equal to the length of the existing superstructure member 110 to be removed. The gantry 10 </ b> C, 10 </ b> D is disposed at a position that divides the existing upper work member 110 to be removed into approximately three equal parts when viewed from the direction perpendicular to the bridge axis, and below the existing upper work member 110 to be removed.

  The left side equipment 10 </ b> A and the right side equipment 10 </ b> B of the superstructure member removal equipment 10 have the same configuration, and both have a main body part 20 and a reaction force receiving base part 40, and a reaction force below the main body part 20. A receiving base 40 is arranged. The main body 20 is a part having a function of descending safely while directly supporting the end of the existing superstructure member 110 to be removed. The reaction force receiving foundation 40 is a part having a function of safely transmitting at least a part of the load of the existing superstructure member 110 supported by the main body 20 to the ground 500 without passing through the piers 102 and 104. The superstructure member removal equipment 10 according to the first embodiment includes the reaction force receiving base 40, so that at least one of the loads received by the main body 20 when the existing superstructure member 110 to be removed is lowered while being supported. Since the part can be transmitted to the ground 500 without passing through the piers 102 and 104, the load transmitted to the piers 102 and 104 even when the main body part 20 is lowered while supporting the existing superstructure member 110. Can be within a range in which the safety of the piers 102 and 104 can be secured.

  When describing the member constituting the main body 20 and the member constituting the reaction force receiving base portion 40, it may be described as a member of the left facility 10A or a member of the right facility 10B, but the side not described Since the same description applies to the corresponding members of the equipment, the corresponding members of the left equipment 10A and the right equipment 10B are assigned the same reference numerals, and one of the left equipment 10A and the right equipment 10B. Only the description of the other corresponding member may be omitted.

  The main body 20 includes a vertical rail 22, a lifting device 24, a bridge shaft perpendicular member 26 for receiving a superstructure member, a rail holding vertical member 28, a bridge perpendicular member 30 and an opposite bridge. The shaft perpendicular direction connecting member 32, the bridge axial direction connecting member 34, and the remaining portion receiving bridge shaft perpendicular direction member 36 are provided.

  The vertical rails 22 are vertically attached to the bridge piers 102 and 104 adjacent to each other in the bridge axis direction of the bridge 100, and four of the bridge piers 102 and 104 are spaced apart in the direction perpendicular to the bridge axis of the bridge 100. It is arranged one by one.

  The vertical rail 22 is located in the span 106 between the bridge piers 102 and 104 when viewed from the direction perpendicular to the bridge axis of the bridge 100, and the position thereof is the side surface of the bridge piers 102 and 104 facing each other. Near the end of the span 106. As shown in FIGS. 1 to 6, the positions of both end faces of the existing superstructure member 110 to be removed are the cut faces 110 </ b> A and 110 </ b> B, and the vertical rail 22 is entirely located at the cut faces 110 </ b> A and 110 </ b> B. It is located at a position closer to the piers 102 and 104 than that. For this reason, when viewed from above, the existing superstructure member 110 to be removed does not overlap with the piers 102 and 104 but also does not overlap with the vertical rail 22.

  The vertical rail 22 is H steel, and is a member directly connected to the lifting device 24 that moves up and down along the vertical rail 22, and is a facility that supports the lifting device 24 and guides its moving direction. .

  Further, in the first embodiment, the vertical rail 22 is attached to the rail holding vertical member 28 that is H steel having a larger cross-sectional shape than the vertical rail 22 and is attached to the piers 102 and 104. . FIG. 19 is a view of the state in which the vertical rail 22 is attached to the rail holding vertical member 28 as viewed from the longitudinal direction. The vertical rails 22 are provided with reinforcing plates 22C at appropriate intervals, and the rail holding vertical members 28 are provided with reinforcing plates 28C at appropriate intervals. The reinforcing plate 22C of the vertical rail 22 is provided with a notch 22C1 in a portion near the flange 22A so as not to interfere with the lifting device 24 that moves up and down.

  From the weight of the existing superstructure member 110 to be removed and the output of the lifting device 24, the number of necessary lifting devices 24 is calculated, and the vertical rails 22 equal to or more than the required number of lifting devices 24 are installed on the piers 102 and 104. To do. Since the same number of lifting devices 24 are arranged in the vicinity of the opposite side surfaces of the bridge piers 102 and 104 located near both ends of the existing superstructure member 110 to be removed, the number of calculated lifting devices 24 is more than half the number of necessary lifting devices 24 Therefore, the vertical rail 22 and the lifting device 24 are installed on the piers 102 and 104, respectively. Here, the number of installation of the vertical rails 22 and the lifting device 24 is set to “half or more” of the necessary number obtained by the calculation. The half of the necessary number obtained by the calculation is the piers 102 and 104. Although it is sufficient for calculation only by installing each of them, the total output of the lifting device 24 that supports the existing superstructure member 110 to be removed by installing more than half of the required number on each of the bridge piers 102 and 104, respectively. The idea is that a margin may be obtained. However, it should be noted that the cost increases if it is installed more than necessary.

  Further, in order to install the lifting device 24 having a large output, it is necessary to use the vertical rail 22 and the rail holding vertical member 28 having a cross-sectional performance commensurate with it. In consideration of the balance between the cross-sectional performance of the direction member 28 and the output of the lifting device 24, the cross-sectional performance and number of the vertical rail 22 and the vertical member 28 for holding the rail to be employed and the number of the lifting devices 24 can be determined. preferable.

  As shown in FIGS. 1 to 6, 13, and 14, the vertical direction is between the vertical rail 22 and the pier 102 of the left facility 10 </ b> A and between the vertical rail 22 and the pier 104 of the right facility 10 </ b> B. A rail holding vertical member 28 extending in the same direction as the rail 22 is disposed. As described above, the vertical rail 22 is H steel, and the rail holding vertical member 28 is also H steel. As shown in FIG. 14, the flange 22B near the pier 102 of the vertical rail 22 is attached to the flange 28A far from the pier 102 of the rail holding vertical member 28 by a bolt 22B1. 22 is connected to the rail holding vertical member 28 so that the longitudinal direction is the same direction. The rail holding vertical member 28 is attached to the bridge axis perpendicular direction connecting member 30, and as shown in FIGS. 18, 1, 11, 13, etc., the bridge axis perpendicular direction connecting member 30, The opposite-side bridge shaft perpendicular direction connecting member 32 and the bridge shaft direction connecting member 34 are arranged so as to be wound around the circumference of each of the piers 102 and 104 and are attached to the piers 102 and 104 without gaps, respectively. 102 and 104 are attached so as to be integrally fixed. Therefore, the vertical rail 22 is integrated with the bridge piers 102 and 104 via the rail holding vertical member 28, the bridge axis perpendicular connection member 30, the opposite bridge axis perpendicular connection member 32 and the bridge axis connection member 34. It is attached to the piers 102 and 104 so as to be fixed.

  However, the bridge axis perpendicular direction connecting member 30, the opposite bridge axis perpendicular direction connecting member 32, and the bridge axis direction connecting member 34, which are arranged so as to be wound around the circumference of each of the bridge piers 102 and 104, are rear anchors, etc. It is not attached to the bridge piers 102 and 104 by the joint by, but is arranged so as to be wound around the circumference of each of the piers 102 and 104 and is only in close contact with the outer peripheral surface of the piers 102 and 104. When the existing superstructure member 110 to be removed is separated from the bridge 100 and lowered, the downward load applied to the vertical rail 22 and the rail holding vertical member 28 is hardly transmitted to the bridge piers 102 and 104, and the vertical direction Most of the downward load applied to the rail 22 and the rail holding vertical member 28 is via the reaction force receiving base 40. It is transmitted to the ground 500 Te. The bridge axis perpendicular connecting member 30, the opposite bridge axis perpendicular connecting member 32 and the bridge axis connecting member 34 transmit downward loads applied to the vertical rail 22 and the rail holding vertical member 28 to the piers 102 and 104. The vertical rail is also applied when a downward load is applied to the vertical rail 22 and the rail holding vertical member 28 when the existing superstructure member 110 is separated from the bridge 100 and lowered. 22 and the rail holding vertical member 28 can be supported so as to be able to hold the upright vertical state, the bridge axis perpendicular direction connecting member 30, the opposite bridge axis perpendicular direction connecting member 32 and the bridge axis direction connecting member. 34 roles.

  As the bridge axis perpendicular direction connecting member 30, the opposite bridge axis perpendicular direction connecting member 32 and the bridge axis direction connecting member 34, specifically, for example, H steel can be used.

  The lifting device 24 is a lifting device that moves up and down along the vertical rail 22. Four vertical rails 22 are attached to each of the piers 102 and 104 located at both ends of the existing superstructure member 110 to be removed, and one lifting device 24 is attached to each of the vertical rails 22. In the space 106, four lifting devices 24 are arranged on each of the bridge piers 102 and 104, respectively.

  As shown in FIG. 16, FIG. 17, FIG. 7, etc., one lifting device 24 has one clevis jack 24A, two H steel clamps 24B, and one bracket 24C. H steel clamps 24B are attached to both ends. A bracket 24C is attached to an H steel clamp 24B attached to the upper end of the clevis jack 24A (the tip of the rod 24A1). The four brackets 24C of the four lifting devices 24 support the upper work member receiving bridge shaft perpendicular direction member 26 from below. The bridge member perpendicular direction member 26 for receiving the upper work member is a long steel member having a length equal to or longer than the length of the existing upper work member 110 in the direction perpendicular to the bridge axis. The upper bridge member receiving bridge shaft perpendicular direction member 26 supports both ends of the existing upper bridge member 110 in the bridge axis direction from below.

  20 and 21 are views schematically showing a mechanism in which the clevis jack 24A and the H steel clamp 24B of the lifting device 24 move along the vertical rail 22, and FIG. 20 is a view as seen from the direction perpendicular to the bridge axis. FIG. 21 is a view as seen from the bridge axis direction. In FIG. 20 and FIG. 21, the description of the bracket 24C and the bridge member perpendicular direction member 26 for receiving the upper work member is omitted.

  20 (a) and 21 (a) show a state in which the rod 24A1 of the clevis jack 24A is contracted. In this state, the H steel clamp 24B attached to the lower end of the clevis jack 24A is released, and the clevis The H steel clamp 24B attached to the upper end of the jack 24A (the tip of the rod 24A1) is tightened. Next, as shown in FIGS. 20B and 21B, the rod 24A1 of the clevis jack 24A is extended. After the extension of the rod 24A1 is completed, the H steel clamp 24B attached to the lower end of the clevis jack 24A is tightened, and then the H steel clamp 24B attached to the tip of the rod 24A1 is released, and the rod 24A1 is contracted, and FIG. c) and the state shown in FIG. 20 (c) and 21 (c), after tightening the H steel clamp 24B attached to the upper end of the clevis jack 24A (the tip of the rod 24A1), the H attached to the lower end of the clevis jack 24A. By releasing the steel clamp 24B, the lifting device 24 returns to the same state as in FIGS. 20A and 21A, and one cycle of movement of the lifting device 24 is completed. This means that the rod 24A1 of 24A has moved downward by a distance corresponding to one stroke.

  By repeating the operations shown in FIGS. 20A to 20C and FIGS. 21A to 21C, the elevating device 24 can move downward along the vertical rail 22. When the lifting device 24 is moved upward, the tightening and releasing operations of the two H steel clamps 24B attached to the upper and lower ends of the clevis jack 24A may be reversed from those for moving downward. .

  The superstructure member removal facility 10 according to the first embodiment uses four lifting devices 24 in each of the left facility 10A and the right facility 10B, and a total of eight lifting devices 24 (eight clevis jacks 24A). Used. In order to smoothly lower the existing superstructure member 110 downward, it is necessary to synchronize and synchronize the operations of the eight clevis jacks 24A in total. This is based on commonly used computer control technology. It can be carried out.

  The bridge member perpendicular direction member 26 for receiving the upper work member is a long steel member having a length equal to or longer than the length of the existing upper work member 110 in the direction perpendicular to the bridge axis. Are arranged in the horizontal direction, and support both ends of the existing superstructure member 110 in the bridge axis direction from below. Further, the bridge member perpendicular direction member 26 for receiving the upper work member is supported from below by the four brackets 24C of the four lifting devices 24, and as the lifting device 24 moves in the vertical direction, the upper work member. The receiving bridge shaft perpendicular direction member 26 is also movable in the vertical direction.

  In the first embodiment, H steel in which reinforcing plates are welded at appropriate intervals in the length direction is used as the bridge member perpendicular direction member 26 for receiving the upper work member.

  As shown in FIGS. 1 to 6, 13, and 14, the rail holding vertical member 28 is H steel extending in the same direction as the vertical rail 22, and the vertical rail 22 and the pier of the left side equipment 10 </ b> A. 102 and between the vertical rail 22 of the right side equipment 10B and the pier 104, and is connected to the vertical rail 22 by the bolt 22B1 as described above.

  The rail-holding vertical member 28 serves to reinforce and stiffen the vertical rail 22 and to serve as a connecting portion when the vertical rails 22 are joined together in the longitudinal direction. By providing the rail-holding vertical member 28, a member such as an attachment plate attached to the vertical rail 22 can be eliminated even when the vertical rails 22 are joined together in the longitudinal direction. For this reason, by providing the vertical member 28 for holding the rail, the vertical rail 22 is directly connected to and supported by its original role (elevating device 24 moving up and down along the vertical rail 22). The role of guiding the moving direction) is easily demonstrated.

  However, in the case where the load transmitted from the attached lifting device 24 to the vertical rail 22 is not large, there is no safety problem even if the rail holding vertical member 28 is not provided. If it can be confirmed, the installation of the rail holding vertical member 28 may be omitted.

  As shown in FIGS. 1 to 18, the bridge shaft perpendicular direction connecting member 30 is an H steel member arranged in a direction perpendicular to the bridge axis on the side of the bridge piers 102 and 104 in the bridge axis direction, and is spaced vertically. A total of four are opened. Further, it is disposed between the rail holding vertical member 28 of the left facility 10A and the pier 102 and between the rail holding vertical member 28 of the right facility 10B and the pier 104. As shown in FIG. 14, the flange 28 </ b> B of the rail holding vertical member 28 is connected to the flange 30 </ b> A of the bridge shaft perpendicular direction connection member 30 by the bolt 30 </ b> A <b> 1. Are connected to four rail-holding vertical members 28 in the form of a cross beam.

  For this reason, the four rail holding vertical members 28 can transmit stress to each other via the bridge axis perpendicular direction connecting member 30, and one of the four rail holding vertical members 28. It is possible to prevent a load from being concentrated on a specific rail holding vertical member 28. At the same time, the bridge axis perpendicular direction connecting member 30 prevents the horizontal displacement of only the specific rail holding vertical member 28 from increasing, and the rail holding vertical member 28 is prevented from buckling. It is preventing.

  Further, as shown in FIGS. 18, 1 to 3, and 7 to 10, the bridge axis perpendicular direction connection member 30, the opposite bridge axis perpendicular direction connection member 32, and the bridge axis direction connection member 34 include the pier 102, It arrange | positions so that the circumference | surroundings of each 104 may wrap around once, and it is attached to each of the piers 102 and 104 without gap, and is attached so that it may be fixed to the piers 102 and 104 integrally. For this reason, the effect of preventing the concentration of stress on the specific rail holding vertical member 28 and the increase in the horizontal displacement of only the specific rail holding vertical member 28 is further increased.

  Further, as shown in FIG. 18, the bridge axis direction connecting member 34 corresponds to the two rail holding vertical members 28 located on the outer side perpendicular to the bridge axis among the four rail holding vertical members 28. Are also disposed at positions (near both ends of the bridge axis perpendicular direction connecting member 30 and the opposite bridge axis perpendicular direction connecting member 32 in the direction perpendicular to the bridge axis). Are connected to the direction connecting member 32, and the bridge axial direction connecting member 34 per one bridge axis perpendicular direction connecting member 30 and one opposite bridge axis perpendicular direction connecting member 32 is totaled in the direction perpendicular to the bridge axis. Four are arranged. The bridge axis direction connecting member 34 is also disposed near both ends of the bridge axis perpendicular direction connecting member 30 and the opposite side bridge axis perpendicular direction connecting member 32 in the bridge axis perpendicular direction so that the bridge axis perpendicular direction connecting member 30 and the opposite side bridge are located. By connecting to the axis-perpendicular direction connecting member 32, the bridge axis direction connecting member 34 also improves the rigidity in the vicinity of both ends of the bridge axis-perpendicular direction connecting member 30 and the opposite side bridge axis-perpendicular direction connecting member 32.

  The bridge portion perpendicular direction member 36 for receiving the remaining portion is made of steel that supports the existing upper work members 112 and 114 remaining above the bridge piers 102 and 104 from below after the existing upper work member 110 is cut along the cutting surfaces 110A and 110B. It has a length equal to or longer than the length of the existing upper work members 112 and 114 in the direction perpendicular to the bridge axis. The remaining portion receiving bridge shaft perpendicular member 36 is disposed horizontally in the direction perpendicular to the bridge shaft and is supported from below by the four rail holding vertical members 28, above the piers 102 and 104. The remaining existing superstructure members 112 and 114 are supported from below so as not to fall from the piers 102 and 104. Specifically, the bridge portion perpendicular direction member 36 for receiving the remaining portion 4 is arranged so that the upper end surfaces of the four vertical members 28 for holding the rail come into contact with the lower surface of the bridge portion perpendicular direction member 36 for receiving the remaining portion. The four rail-holding vertical members 28 are attached to the rail-holding vertical members 28 and support the remaining portion receiving bridge shaft perpendicular member 36 from below.

  In the first embodiment, as the remaining portion receiving bridge shaft perpendicular direction member 36, H steel in which a reinforcing plate is welded at an appropriate interval in the length direction is used, and the remaining portion receiving bridge shaft perpendicular direction direction is used. The member 36 is connected to the four rail holding vertical members 28 by bolt joining.

  As mentioned above, although each member which comprises the main-body part 20 of the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention has been demonstrated, next, the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention is demonstrated. Each member which comprises the reaction force receiving foundation 40 will be described.

  The reaction force receiving foundation 40 is a part having a function of safely transmitting at least a part of the load of the existing superstructure member 110 supported by the main body 20 to the ground 500 without passing through the piers 102 and 104. The superstructure member removal equipment 10 according to the first embodiment includes the reaction force receiving base 40, so that at least one of the loads received by the main body 20 when the existing superstructure member 110 to be removed is lowered while being supported. Since the part can be transmitted to the ground 500 without passing through the piers 102 and 104, the load transmitted to the piers 102 and 104 even when the main body part 20 is lowered while supporting the existing superstructure member 110. Can be within a range in which the safety of the piers 102 and 104 can be secured.

  As shown in FIGS. 11 and 12, the reaction force receiving foundation portion 40 includes a footing upper surface fixed mount 42, a height adjusting mount 44, a post-stake pile 46, and a receiving beam 48. It has the role which transmits the downward load to the ground 500 which the main-body part 20 of the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention receives. As described above, the bridge axis perpendicular direction connecting member 30, the opposite bridge axis perpendicular direction connecting member 32, and the bridge axis direction connecting member 34 are not attached to the piers 102 and 104 by joining with a post-fixed anchor or the like. The piers 102 and 104 are arranged so as to be wound around the piers 102 and 104, and are only in close contact with the outer peripheral surfaces of the piers 102 and 104. Therefore, the existing superstructure member 110 to be removed is separated from the bridge 100 and lowered. The downward load applied to the vertical rail 22 and the rail holding vertical member 28 during transmission is hardly transmitted to the bridge piers 102 and 104, and the downward load applied to the vertical rail 22 and the rail holding vertical member 28. Is transmitted to the ground 500 via the reaction force receiving base 40.

  The footing upper surface fixed mount 42 is H steel installed on the upper surfaces of the footings 150 and 152 in parallel with the side surfaces facing the bridge axis direction of the piers 102 and 104, and is in direct contact with the upper surfaces of the footings 150 and 152. Are arranged as follows. Moreover, when the arrangement position of the footing upper surface fixed mount 42 is described in relation to the position of the existing upper work member 110, the footing upper surface fixed mount 42 is viewed from above with respect to the end portion of the existing upper work member 110 to be removed. Thus, it is disposed at at least one of a position substantially perpendicular to the bridge axis and a position overlapping with the end of the existing superstructure member 110 to be removed.

  The height adjustment pedestal 44 is disposed on the footing upper surface fixed gantry 42 and is a member whose height can be adjusted with an adjustment plate or the like. The upper surface of the height adjustment gantry 44 is connected to the upper end surface of the post-stake pile 46. Adjust so that they are at the same height.

  Part of the vertically downward load transmitted from the main body portion 20 of the superstructure member removal equipment 10 according to the first embodiment of the present invention to the reaction force receiving base portion 40 is the footing upper surface fixed mount 42 and the height adjustment mount. 44 is transmitted to the footings 150 and 152 through 44, and is transmitted to the ground 500.

  The post-stake piles 46 are located on the side of the footing upper surface fixed mount 42 and the height adjustment mount 44 installed on the upper surfaces of the footings 150 and 152 of the bridge piers 102 and 104 in the direction perpendicular to the bridge axis (viewed from above, the existing superstructure to be removed). A post-pile pile placed on the ground 500 at a position substantially perpendicular to the bridge axis with respect to the end of the member 110 and at least one of positions overlapping the end of the existing superstructure member 110 to be removed is there. Part of the downward load in the vertical direction transmitted from the main body portion 20 of the superstructure member removal equipment 10 according to the first embodiment of the present invention to the reaction force receiving base portion 40 is applied to the ground 500 via the post pile 46. Communicated.

  In this 1st Embodiment, although H steel is used as the post-stake pile 46, members other than H steel may be used as the post-pile pile 46, for example, a concrete pile etc. may be used.

  The vertical downward load transmitted from the main body portion 20 of the superstructure member removal equipment 10 according to the first embodiment of the present invention to the reaction force receiving base portion 40 is applied to the footing upper surface fixing base 42 and the height adjustment base 44. If it can be confirmed that it can be safely transmitted to the ground 500 only by transmitting to the footings 150 and 152 via, the placement of the post pile 46 may be omitted.

  Conversely, the vertical downward load transmitted from the main body 20 of the superstructure member removal equipment 10 according to the first embodiment of the present invention to the reaction force receiving foundation 40 is only transmitted to the post pile 46. Thus, when it can be confirmed that it can be safely transmitted to the ground 500, the installation of the footing upper surface fixed mount 42 and the height adjusting mount 44 may be omitted.

  The receiving beam 48 is a member disposed at the uppermost portion of the reaction force receiving base portion 40, disposed below the rail holding vertical member 28, and coupled to the lower end surface of the rail holding vertical member 28. Yes. Most of the downward load in the vertical direction received by the main body 20 of the superstructure member removal equipment 10 is transmitted from the rail holding vertical member 28 of the main body 20 to the receiving beam 48.

  The receiving beam 48 is a member that directly receives most of the downward load in the vertical direction received by the main body 20 of the superstructure member removal facility 10 according to the first embodiment of the present invention. The signals are transmitted to the footings 150 and 152 via the adjustment frame 44 and the footing upper surface fixed frame 42 and transmitted to the ground 500, and are transmitted to the ground 500 via the back pile 46. The length of the receiving beam 48 is approximately the same as that of the connecting member 30 perpendicular to the bridge axis.

  In the first embodiment, H steel with reinforcing plates welded at appropriate intervals in the length direction is used as the receiving beam 48. It is installed on the upper end surface of the pile 46, and is connected to the height adjustment mount 44 and the post-stake pile 46 by bolt joining.

  In the above, each member which comprises the main-body part 20 and the reaction force receiving base part 40 of the superstructure member removal equipment 10 which concerns on 1st Embodiment of this invention has been demonstrated. In the description, H steel was often taken up as a specific example used for each member, but a member other than H steel may be used as long as the member has performance required for each member.

  At the end of the description of the configuration of the superstructure member removal facility 10 according to the first embodiment of the present invention, the gantry 10C, 10D will be described.

  As described above, the superstructure member removal equipment 10 according to the first embodiment of the present invention includes the left equipment 10A close to the pier 102, the right equipment 10B close to the pier 104, and the two mounts 10C and 10D. However, the gantry 10C, 10D is arranged below the existing upper work member 110 to be removed at a position that divides the existing upper work member 110 to be removed into approximately three equal parts as viewed from the direction perpendicular to the bridge axis. The existing upper work member 110 to be removed, which has been lowered by the upper work member removal equipment 10, is placed on the gantry 10C, 10D.

  The existing superstructure member 110 placed on the gantry 10C, 10D is cut by the cutting surfaces 110C, 110D so that the length in the longitudinal direction is shortened, and then the crane 200 (FIGS. 3, 6, and 9). Lift it up and remove it.

  By providing the gantry 10C, 10D, it is possible to prevent the lifting device 24 from interfering with the footings 150, 152 of the piers 102, 104 and the ground 500 even when the lifting device 24 is lowered. In addition, by placing the existing upper work member 110 to be removed not on the ground surface of the ground 500 but on the gantry 10C, 10D, the existing upper work member 110 can be easily cut and disassembled. In view of preventing the lifting device 24 from interfering with the footings 150 and 152 of the piers 102 and 104 and the ground 500 even when the lifting device 24 is lowered, it is easy to perform the cutting and dismantling work of the existing superstructure member 110. In view of the above, it is preferable that the height of the gantry 10C, 10D from the ground surface is 1 m or more and 3 m or less.

(1-2) Configuration of the superstructure member replacement facility according to the first embodiment The superstructure member removal facility 10 according to the first embodiment of the present invention is lowered while supporting the existing superstructure member 110 to be removed. The superstructure member replacement facility 12 (see FIGS. 43 to 47) according to the first embodiment of the present invention, in addition to that, can be raised while supporting the newly constructed bridge girder. Has the ability to This difference in capability is the difference between the superstructure member removal equipment 10 according to the first embodiment of the present invention and the superstructure member replacement equipment 12 according to the first embodiment of the present invention.

  The difference in capability can be dealt with by adjusting the output and number of the lifting device 24 and the cross-sectional performance and number of the vertical rail 22 and the rail holding vertical member 28.

  Accordingly, the basic configuration of the superstructure member replacement facility 12 according to the first embodiment of the present invention is the same as the configuration of the superstructure member removal facility 10 according to the first embodiment of the present invention. The description of the configuration of the superstructure member removal facility 10 according to the first embodiment will be replaced with the description of the configuration of the superstructure member replacement facility 12 according to the first embodiment of the present invention.

  In addition, in the normal case, the existing superstructure member 110 to be removed includes not only the main girder but also the floor slab, and the existing main girder and the existing floor slab will be removed at the same time. The new superstructure member 160 (see FIGS. 45 to 47) to be installed is usually only the main girder, and the newly installed floor slab is the bridge 100 after the new main girder is installed at a predetermined position of the bridge 100. It will be installed at the height position as the superstructure of the. Therefore, since the weight of the existing superstructure member 110 to be removed is usually larger than the weight of the newly constructed superstructure member 160 to be newly constructed, the superstructure member removal equipment 10 according to the first embodiment of the present invention is used. Can be used as it is as the superstructure member replacement facility 12 according to the first embodiment of the present invention.

(1-3) Construction method of superstructure member removal equipment according to the first embodiment A construction method of the superstructure member removal equipment 10 according to the first embodiment of the present invention will be described. The case of building is explained. The same applies to the construction of the right facility 10B close to the pier 104.

  22 to 26, FIG. 30, FIG. 31, FIG. 33, and FIG. 34 are front views schematically showing the state of each stage when constructing the superstructure member removal equipment 10 according to the first embodiment of the present invention. 27 is a front view showing the temporary receiving bracket 90, FIG. 28 is a side view showing the temporary receiving bracket 90 (a view taken along the line XXVIII in FIG. 27), FIG. 29, FIG. FIG. 35 is a cross-sectional view of a cut surface obtained by cutting the pier 102 along a horizontal plane when viewed from above, in each stage when the superstructure member removal facility 10 according to the first embodiment of the present invention is constructed. It is. However, in FIG. 29, FIG. 32, and FIG. 35, only the member of the main-body part 20 is described. In FIG. 24, FIG. 26, FIG. 31, and FIG. 34, the description of the post-stake pile 46 is omitted for the sake of illustration.

  Hereinafter, the construction method of the superstructure member removal equipment 10 according to the first embodiment of the present invention will be described in steps. However, the drawings schematically show only the states in main steps, and one drawing may be used for explanation of a plurality of steps.

<Step S1>
Excavating to the top end of the footing 150 of the pier 102 exposes the upper surface of the footing 150 of the pier 102 (see FIGS. 22 to 24).

<Step S2>
A post-casting anchor (not shown) is installed on the upper surface of the footing 150, and the footing upper surface fixing base 42 is installed on the upper surface of the footing 150 with the installed post-casting anchor (see FIGS. 22 and 24).

<Step S3>
The height adjusting frame 44 is fixed to the installed footing upper surface fixed frame 42 with bolts (see FIGS. 22 and 24).

<Step S4>
The H steel is positioned at the position of the ground 500 corresponding to the outer girder position of the existing superstructure member 108 to be removed or the position of the outer side of the existing superstructure member 108 to be removed, on the outer side in the direction perpendicular to the bridge axis of the installed footing upper surface fixing base 42 and the height adjusting base A post-stake pile 46 made of Placing the post-stake pile 46 can be performed using, for example, a vibro hammer 250 lifted by the crane 202 (see FIGS. 22 and 23). When the footing 150 is long in the direction perpendicular to the bridge axis so as to reach both outer spar positions of the existing superstructure member 108 to be removed, the post-stake pile 46 is not necessary in principle.

<Step S5>
The height of the height adjustment gantry 44 is adjusted with an adjustment plate (not shown) or the like, so that the top edge height of the height adjustment gantry 44 and the top edge height of the trailing pile 46 are the same (see FIG. 22). .

<Step S6>
After the height of the top edge of the height adjustment gantry 44 and the height of the top edge of the rear pile 46 are made the same, the receiving beam 48 is lifted by the crane 204 on the upper surface of the height adjustment rack 44 and the upper end surface of the rear pile 46. And are fixed to the height adjusting frame 44 and the post pile 46 with bolts (see FIGS. 22 and 24). For convenience of illustration, the illustration of the post-stake pile 46 is omitted in FIG.

<Step S7>
The temporary support bracket 90 is attached to the bridge pier 102 with a post-fixed anchor 92 in accordance with the position where the bridge axis perpendicular direction connecting member 30, the opposite bridge axis perpendicular direction connecting member 32 and the bridge axis direction connecting member 34 are arranged (FIG. 25). To FIG. 28). The post anchor 92 is attached to the pier 102 by a worker on the work platform of the aerial work vehicle 220.

<Step S8>
The bridge axis perpendicular connecting member 30 is lifted by the crane 204 and installed on the temporary receiving bracket 90 attached to the pier 102 (see FIGS. 25 and 26). Similarly, the opposite bridge shaft perpendicular direction connecting member 32 is also lifted by the crane 204 and installed on the temporary receiving bracket 90 attached to the pier 102 (see FIG. 26).

  Here, since the uppermost bridge shaft perpendicular direction connecting member 30 and the opposite bridge shaft perpendicular direction connecting member 32 have a narrow undergirder space, they are drawn in the direction perpendicular to the bridge axis from the outside of the existing superstructure member 108 ( (See FIG. 25 and FIG. 26).

<Step S9>
The bridge axis perpendicular connecting member 30 and the opposite bridge axis perpendicular connecting member 32 are arranged on the temporary support bracket 90 and installed along both sides of the bridge pier 102 in the bridge axis direction. 34 is installed along both sides of the bridge pier 102 in the direction perpendicular to the bridge axis, and is connected to the bridge axis perpendicular direction connecting member 30 and the opposite side bridge axis perpendicular direction connecting member 32. The bridge axis perpendicular direction connecting member 32 and the bridge axis direction connecting member 34 are arranged so as to be wound around the pier 102 around the pier 102 so as to be attached to the pier 102 without a gap and to be fixed integrally to the pier 102 ( (See FIG. 26 and FIG. 29). At the time of attachment, the length of the bridge axis direction connecting member 34 is adjusted to match the width of the bridge pier 102 in the bridge axis direction by an adjustment plate (not shown), a giraffe jack (not shown), etc. It is noted that the bridge axis perpendicular connecting member 30, the opposite bridge axis perpendicular connecting member 32, and the bridge axis connecting member 34 are attached to the pier 102 without gaps, and are attached so as to be integrally fixed to the pier 102.

  The bridge axis direction connecting members 34 are also attached to the vicinity of both ends of the bridge axis perpendicular direction connecting member 30 and the opposite side bridge axis perpendicular direction connecting member 32.

  FIG. 29 is a cross-sectional view (cross-sectional view taken along the line XXIX-XXIX in FIG. 26) of the cut surface obtained by cutting the pier 102 with the horizontal plane after the attachment is completed.

  Further, a curing material such as a cushioning material is arranged on the surface of the bridge pier 102 at a height position where the bridge axis perpendicular direction connecting member 30, the opposite bridge axis perpendicular direction connecting member 32 and the bridge axis direction connecting member 34 are installed. A curing material such as a cushioning material is disposed between the surface of the bridge pier 102 and the bridge piercing link member 34, the opposite side bridge shaft perpendicular linking member 32 and the bridge shaft direction linking member 34 and the surface of the pier 102. It is preferable not to do so.

<Step S10>
The up-down direction rail 22 and the up-down direction member 28 for rail maintenance are connected and integrated with the bolt 22B1 on the ground (see FIG. 19).

<Step S11>
The integrated vertical rail 22 and rail holding vertical member 28 are lifted by a crane 204 and arranged so that the lower end surface of the rail holding vertical member 28 is arranged on the upper surface of the receiving beam 48. The rail holding vertical member 28 is connected to the receiving beam 48 with bolts, and the rail holding vertical member 28 is connected to the bridge axis perpendicular direction connecting member 30 with bolts to connect the first-stage vertical rail 22 to the rail. A holding vertical member 28 is installed (see FIGS. 30 and 31).

<Step S12>
After completing the installation of the first-stage vertical rail 22 and the rail-holding vertical member 28, the upper and lower rails 22 and the rail-holding vertical member 28, which have been integrated in order, are integrated in the required number of steps. It arrange | positions in a predetermined position so that it may arrange | position with each of the direction rail 22 and the rail holding up-and-down direction member 28, and the rail holding up-and-down direction member 28 is connected with the bridge axis perpendicular direction connection member 30 with a volt | bolt ( (See FIG. 30 and FIG. 31). Further, the rail holding vertical members 28 adjacent to each other (for example, the first rail holding vertical member 28 and the second rail holding vertical member 28) are connected to each other by an attachment plate or the like. At that time, attention is paid to the accuracy management of the interval between the vertical rails 22, the accuracy management of the verticality of the vertical rails 22, and the accuracy management of the displacement of the joint portion between the vertical rails 22.

  FIG. 32 shows a cross-sectional view (cross-sectional view taken along the line XXXII-XXXII in FIG. 31) of the cut surface obtained by cutting the pier 102 with the horizontal plane after completion of the attachment from above.

<Step S13>
After attaching an elevating device 24 to each vertical rail 22 and connecting an interlocking operation panel (not shown) and a hydraulic hose (not shown), clevis jacks 24A and H steel clamps 24B of all the elevating devices 24 are attached. Enable interlocking.

<Step S14>
After the height of the bracket 24C of the elevating device 24 attached to each vertical rail 22 is made uniform by an interlocking operation panel (not shown), the bridge member perpendicular direction member 26 for receiving the upper construction member is moved by the crane 204. It is lifted, and the bridge member perpendicular direction member 26 for receiving the upper work member is attached to the bracket 24C (see FIG. 33).

<Step S15>
On the upper end surface of the rail holding vertical member 28, the remaining portion receiving bridge shaft perpendicular member 36 is installed (see FIG. 33). Since the bridge portion perpendicular direction member 36 for receiving the remaining portion is installed in the vicinity of the lower surface of the end portion of the existing upper work member 108 (see FIG. 36), the existing upper work member 108 is formed from the outside of the existing upper work member 108. Pull near the bottom surface.

  Completion of step S15 completes construction of the superstructure member removal equipment 10 according to the first embodiment of the present invention. FIG. 34 shows a front view in which step S15 has been completed (a front view of the bridge pier 102 viewed from the direction perpendicular to the bridge axis), and FIG. 35 shows a cross-sectional view taken along line XXXV-XXXV in FIG. However, in FIG. 34, the description of the post-stake pile 46 is omitted for the sake of illustration, and in FIG. 35, the description of the bridge shaft perpendicular member 26 for receiving the upper work member is omitted for the convenience of illustration.

(1-4) Method for constructing superstructure member replacement facility according to first embodiment As described above in “(1-2) Configuration of superstructure member replacement facility according to first embodiment”, The basic configuration of the superstructure member replacement facility 12 (see FIGS. 43 to 47) according to the first embodiment is the same as the configuration of the superstructure member removal facility 10 according to the first embodiment of the present invention. The present invention will be described with reference to the construction method of the superstructure member removal equipment 10 according to the first embodiment of the present invention described in “(1-3) Construction method of superstructure member removal equipment according to the first embodiment”. Suppose that it replaces with the description about the construction method of the superstructure member replacement equipment 12 which concerns on 1st Embodiment.

(1-5) Superstructure member removal method according to the first embodiment A span 106 between adjacent bridge piers 102 and 104 of the bridge 100 using the superstructure member removal facility 10 according to the first embodiment of the present invention. The state in each step of the removal method (upper member removal method according to the first embodiment) for removing the existing upper work member 110 is shown in FIGS. 36 to 42 are front views of the states in the respective steps as viewed from the direction perpendicular to the bridge axis. The superstructure member removal method according to the first embodiment will be described with reference to FIGS. 36 to 42.

  Note that step S106 for removing the existing superstructure members 112 and 114 left on the piers 102 and 104 is not an essential step in the superstructure member removal method according to the present invention. Since the remaining existing upper work members 112 and 114 are also removed, this step S106 is also included in the upper work member removal method according to the first embodiment.

  FIG. 36 is a front view showing a state in which the upper work member receiving bridge shaft perpendicular direction member 26 supports a predetermined amount of the load of the existing upper work member 108 before cutting from below, and FIG. FIG. 38 is a front view showing a state immediately after the existing upper work member 110 to be removed is separated from the bridge 100, and FIG. 38 is a front view showing a state in which the existing upper work member 110 to be removed is lowered and placed on the gantry 10C, 10D. FIG. 39 is a front view showing a state in which the existing upper work member 110 to be removed is cut on the gantry 10C, 10D, and FIG. 40 is an existing upper work member 110 ( 110X, 110Y, 110Z) is a front view showing a state immediately before being lifted and removed by the crane 200, and FIG. 41 is a front view showing a state after the existing superstructure member 110 is removed, and FIG. Is the state after the removal of the existing superstructure members 112 and 114 remaining on the piers 102 and 104 is completed (after the removal of the existing superstructure members 108 spanning between the pier 102 and the pier 104 is completed) FIG.

  Hereinafter, the superstructure member removal method according to the first embodiment will be described in steps, with reference to FIGS. 36 to 42.

<Step S101>
As shown in FIG. 36, the lifting / lowering device 24 is lifted along the vertical rails 22, and the load of the existing upper work member 108 before cutting is deposited on the upper work member receiving bridge shaft perpendicular direction member 26, and the remaining portion A liner plate (not shown) is installed on the upper surface of the receiving bridge shaft perpendicular direction member 36 and is already provided equally to the upper work member receiving bridge shaft perpendicular direction member 26 and the remaining portion receiving bridge axis perpendicular direction member 36. The load of the superstructure member 108 is borne (support process).

<Step S102>
After the load of the existing upper work member 108 is equally applied to the bridge shaft perpendicular member 26 for receiving the upper work member and the bridge shaft right direction member 36 for receiving the remaining portion, the upper work member receiving bridge shaft perpendicular direction member 26 is then loaded. 37 at the position (the position of the cutting surface 110A and the position of the cutting surface 110B in FIG. 37) between the bridge member and the remaining portion receiving bridge shaft perpendicular direction member 36, as shown in FIG. 108 is cut and divided into existing superstructure members 110, 112, and 114 (separation step).

  Immediately after cutting at the cutting surfaces 110A and 110B (a state before the lifting device 24 is lowered), as shown in FIG. 37, both ends of the existing upper work member 110 are members in the direction perpendicular to the bridge shaft for receiving the upper work member. 26, both ends of the existing upper work member 112 are supported from below by the bridge portion perpendicular direction member 36 for receiving the remaining portion and the fulcrum 102A on the pier 102, and the existing upper work member 112 Both ends of 114 are supported by the remaining portion receiving bridge shaft perpendicular member 36 and the fulcrum 104A on the pier 104 from below.

<Step S103>
As shown in FIG. 38, the elevating device 24 is lowered (lowering step), and the existing upper work member 110 to be removed is placed on the gantry 10C, 10D (lowering step). Specifically, the height position of the elevating device 24 lowered (the upper work member) so that the load supported by the bridge shaft perpendicular member 26 for receiving the upper work member and the load supported by the gantry 10C, 10D are equally divided. The height position of the receiving bridge axis perpendicular direction member 26 is adjusted.

<Step S104>
The height position of the elevating device 24 lowered (the bridge shaft for receiving the upper work member) so that the load supported by the perpendicular member 26 for receiving the upper work member and the load supported by the gantry 10C, 10D are equally divided. After adjusting the height position of the perpendicular member 26, the existing superstructure member 110 is cut in the direction perpendicular to the bridge axis on the gantry 10C, 10D (see FIG. 39). In the first embodiment, the gantry 10C, 10D is disposed below the existing upper work member 110 to be removed at a position that divides the existing upper work member 110 to be removed into approximately three equal parts as viewed from the direction perpendicular to the bridge axis. Has been. For this reason, when the existing upper work member 110 is cut in the direction perpendicular to the bridge axis on the gantry 10C, 10D, it is roughly divided into three equal parts in the longitudinal direction. Each member of the existing upper work member 110 cut into approximately three equal parts will be referred to as existing upper work members 110X, 110Y, and 110Z.

<Step S105>
As shown in FIG. 40, the existing superstructure member 110 (existing superstructure members 110X, 110Y, 110Z) after cutting is lifted and carried out by the crane 200 placed on the ground (unloading step). However, in FIG. 40, only the hook etc. which are used for lifting among the parts of the crane 200 are shown, and the reference numeral 200 is given to this hook and the like.

  The state after carrying out and removing the existing superstructure member 110 (existing superstructure members 110X, 110Y, 110Z) after cutting from the mounts 10C, 10D is shown in FIG.

<Step S106>
The existing superstructure members 112 and 114 left on the bridge piers 102 and 104 are lifted by a crane (not shown) disposed on the ground 500 or the bridge 100 and are carried out and removed.

  The state after the existing superstructure members 112 and 114 left on the piers 102 and 104 are unloaded and removed (the state after the removal of the existing superstructure members 108 spanning between the pier 102 and the pier 104 is completed) ) Is shown in FIG.

  Note that the order of step S105 and step S106 may be reversed.

(1-6) Superstructure member replacement method according to the first embodiment After implementing the superstructure member removal method according to the first embodiment, a superstructure member in which a new superstructure member 160 is installed in the span 106 The replacement method (superstructure member replacement method according to the first embodiment performed using the superstructure member replacement facility 12 according to the first embodiment of the present invention) will be described.

  In addition, step S106 which removes the existing superstructure members 112 and 114 left on the bridge piers 102 and 104, and new superstructure members 162 and 164 newly installed on the bridge piers 102 and 104 (short lengths arranged at both ends of the span 106). The step S107 for installing the new superstructure member 162, 164) is not an essential step in the superstructure member replacement method according to the present invention. Therefore, step S106 and step S107 are also included in the superstructure member replacement method according to the first embodiment.

  In the superstructure member replacement method according to the first embodiment, the method until the removal of the existing superstructure member 108 is completed is the same as the method described in “(1-5) Superstructure member removal method”. Therefore, the explanation is omitted, and the method from the completion of the removal of the existing superstructure member 108 to the completion of the construction of the new superstructure member 160 is divided into steps, with reference to FIGS. 43 to 47. explain. 43 to 47 are front views of the states in the respective steps as viewed from the direction perpendicular to the bridge axis.

  FIG. 43 is a front view showing a state in which new upper work members 162 and 164 (short new upper work members 162 and 164 disposed at both ends of the span 106) are newly installed on the piers 102 and 104, In FIG. 44, the new upper work members 160X, 160Y, and 160Z constituting the new upper work member 160 are arranged on the upper work member receiving bridge axis perpendicular member 26 and the mounts 10C and 10D by a crane (not shown). FIG. 45 is a front view showing a state where the new upper work member 160X is assembled by connecting the new upper work members 160X, 160Y and 160Z with the attachment plate 160A, FIG. 46 is a front view showing a state in which the new upper work member 160 is raised by the elevating device 24 and the new upper work member 160 is disposed at a predetermined height position as the upper work of the bridge 100. FIG 47 is a front view showing a state in which after the connection to the bridge 100 of the new superstructure member 160.

  As described above, in the superstructure member replacement method according to the first embodiment, the method until the existing superstructure member 108 is removed is the method described in “(1-5) Superstructure member removal method”. Since it is the same, removal of the existing superstructure member 108 in the superstructure member replacement method according to the first embodiment is described with the description of steps S101 to S106 described in “(1-5) Superstructure member removal method”. It replaces with description about each step until.

  Therefore, in the following, from the state after the removal of the existing superstructure member 108 that has been bridged between the pier 102 and the pier 104 is completed (the state shown in FIG. 42), the superstructure member replacement facility 12 is used. With respect to the state where the installation of the new superstructure member 160 has been completed, the superstructure member replacement method according to the first embodiment will be described in steps (steps S107 to S113).

<Step S107>
42, after the removal of the existing superstructure member 108 is completed, the new superstructure member 162 is installed on the pier 102 with a crane (not shown) disposed on the ground 500 or the bridge 100, A new superstructure member 164 is installed on the pier 104. FIG. 43 shows a state after the new superstructure members 162 and 164 are installed on the piers 102 and 104. As shown in FIG. 43, the new upper work members 162 and 164 are short new upper work members disposed at both ends of the span 106 (see FIG. 1).

<Step S108>
The height position of the elevating device 24 is adjusted so that the height position of the upper work member receiving bridge shaft perpendicular direction member 26 matches the height of the gantry 10C, 10D.

<Step S109>
As shown in FIG. 44, the new superstructure members 160X, 160Y, and 160Z are disposed on the bridge member perpendicular direction member 26 for receiving the superstructure member and the platforms 10C and 10D, as shown in FIG. (New superstructure member placement process).

<Step S110>
As shown in FIG. 45, the newly installed upper work members 160X, 160Y, 160Z arranged on the bridge axis perpendicular member 26 for receiving the upper work member and the mounts 10C, 10D are connected by the attachment plate 160A and installed. The upper work member 160 is assembled.

<Step S111>
The assembled new upper work member 160 is raised by the lifting device 24, and the new upper work member 160 is disposed at a predetermined height position as the upper work of the bridge 100 as shown in FIG.

<Step S112>
As shown in FIG. 47, the new upper work member 160 arranged at a predetermined height position as the upper work of the bridge 100 is connected to the new upper work members 162 and 164 by the attachment plates 160B and 160C.

<Step S113>
After the new superstructure member 160 is connected to the new superstructure members 162 and 164 with the attachment plates 160B and 160C, the lifting device 24 is lowered to release the load that supported the new superstructure member 160, and the superstructure Complete the replacement work.

(1-7) Effects of the First Embodiment According to the superstructure member removal equipment and superstructure member replacement equipment and superstructure member removal method and superstructure member replacement method according to the first embodiment, the pier 102, Since the existing superstructure member 110 can be removed and replaced using the elevating device 24 that elevates in the vertical direction along the vertical rail 22 along the vertical direction 104, the height of the existing superstructure member 110 can be increased. It is unnecessary to use a heavy machine that reaches the vertical position, and it is also possible to eliminate the need to construct a vent that reaches the vicinity of the height position of the existing superstructure member 110.

  For this reason, even when removing and replacing the existing superstructure of a viaduct with a high ground clearance, downsizing heavy machinery, simplifying vent equipment, and improving the efficiency of removing and installing superstructure be able to.

(2) Second Embodiment (2-1) Configuration of Superstructure Member Removal Facility According to Second Embodiment FIGS. 48 to 50 show the superstructure member removal facility 50 according to the second embodiment of the present invention. It is a front view (front view seen from the bridge axis perpendicular direction of bridge 100) which removes existing superstructure member 110 in span 106 between bridge piers 102 and 104 which bridge 100 adjoins. 48 is a front view showing a state before the existing upper work member 110 to be removed is lowered, FIG. 49 is a front view showing a state after the existing upper work member 110 to be removed is lowered, and FIG. It is a front view which shows the state just before lifting and removing with the crane 200 after cut | disconnecting the existing superstructure member 110 lowered | hung. The existing superstructure member 110 to be removed is cut from the bridge 100 by being cut along the cut surfaces 110A and 110B.

  FIGS. 51-53 remove the existing superstructure member 110 in the span 106 between the adjacent bridge piers 102 and 104 of the bridge 100 using the superstructure member removal equipment 50 which concerns on 2nd Embodiment of this invention. FIG. 2 is a cross-sectional view (a cross-sectional view in which a vertical plane parallel to the bridge axis direction of the bridge 100 and a central portion of the bridge 100 in a direction perpendicular to the bridge axis are cut off) showing a situation where the bridge 100 is running. 51 is a cross-sectional view showing a state before the existing superstructure member 110 to be removed is lowered (the cutting position is the same as the cutting position indicated by the line IV-IV in FIG. 7), and FIG. 52 is the existing upper part to be removed. FIG. 53 is a cross-sectional view showing the state after the work member 110 is lowered (the cutting position is the same as the cutting position indicated by the line VV in FIG. 8), and FIG. 53 is a cut of the existing upper work member 110 that has been lowered. It is sectional drawing (cutting position is the same position as the cutting position shown to the VI-VI line of FIG. 9) which shows the state just before lifting with crane 200 later and removing.

  54 is a cross-sectional view showing a cut surface obtained by cutting the lower part of the superstructure member removal equipment 50 according to the second embodiment along a vertical plane parallel to the bridge axis direction (the cutting position is indicated by the line XIII-XIII in FIG. 11). The same position as the cutting position).

  FIG. 55 is a front view of the lower part of the superstructure member removal facility 50 according to the second embodiment of the present invention as viewed from the direction perpendicular to the bridge axis of the bridge 100.

  FIG. 56 is a front view of the upper part of the superstructure member removal equipment 50 according to the second embodiment of the present invention as viewed from the direction perpendicular to the bridge axis of the bridge 100 (an enlarged view of the LVI portion in FIG. 48). It is the LVII-LVII sectional view taken on the line of FIG.

  7-10 about the superstructure member removal equipment 10 which concerns on 1st Embodiment are sectional drawing in the same cutting position about the superstructure member removal equipment 50 which concerns on this 2nd Embodiment. Since it is the same, in the following description about the superstructure member removal equipment 50 which concerns on this 2nd Embodiment, sectional drawing shown in FIGS. 7-10 is also referred and referred.

  Moreover, the side view which looked at the lower part of the upper construction member removal equipment 50 which concerns on 2nd Embodiment of this invention from the bridge axial direction sees the lower part of the upper construction member removal equipment 10 which concerns on 1st Embodiment from the bridge axial direction. 11 and 12 which are side views. Moreover, the structure shown in FIG. 14 which is an enlarged view which expands a part of lower part of the superstructure member removal equipment 10 which concerns on 1st Embodiment is the same as that of the superstructure member removal equipment 50 which concerns on this 2nd Embodiment. apply. Moreover, the structure shown in FIG. 17 which is the side view which looked at the upper part of the superstructure member removal equipment 10 which concerns on 1st Embodiment from the bridge-axis direction of the bridge 100 is the superstructure member removal equipment 50 which concerns on this 2nd Embodiment. The same applies to. In the following description of the superstructure member removal facility 50 according to the second embodiment, the side view shown in FIGS. 11 and 12, the enlarged view shown in FIG. 14 and the side view shown in FIG. 17 are also referred to.

  The superstructure member removal equipment 50 according to the second embodiment of the present invention has the same configuration as that of the superstructure member removal equipment 10 according to the first embodiment, and the bridge piers 102 and 104 are opposite to the span 106 in the bridge axial direction. Since it has a structure provided also in the vicinity of the piers 102 and 104 at the ends near the piers 102 and 104 of the spans 126 and 136, the superstructure member removal equipment 50 according to the second embodiment of the present invention. The members and devices corresponding to the members and devices of the superstructure member removal facility 10 according to the first embodiment are, in principle, the same reference numerals and names, and the description thereof is omitted in principle.

  The superstructure member removal equipment 50 according to the second embodiment of the present invention includes a left side equipment 50A close to the pier 102, a right side equipment 50B close to the pier 104, and two mounts 10C and 10D. The left side equipment 50A and the right side equipment 50B of the superstructure member removal equipment 50 are arranged to face each other with a distance substantially the same as the length of the existing superstructure member 110 to be removed. The gantry 10 </ b> C, 10 </ b> D is disposed at a position that divides the existing upper work member 110 to be removed into approximately three equal parts when viewed from the direction perpendicular to the bridge axis, and below the existing upper work member 110 to be removed.

  The left side equipment 50 </ b> A and the right side equipment 50 </ b> B of the superstructure member removal equipment 50 have the same configuration, and both have a main body portion 52 and a reaction force receiving base portion 60, and a reaction force below the main body portion 52. A receiving base 60 is arranged. The main body 52 is a part having a function of descending safely while directly supporting the end of the existing superstructure member 110 to be removed. The reaction force receiving base 60 is a part having a function of safely transmitting at least a part of the load of the existing superstructure member 110 supported by the main body 52 to the ground 500 without passing through the piers 102 and 104. The superstructure member removal equipment 50 according to the second embodiment includes the reaction force receiving base 60, so that at least one of the loads received by the main body 52 when the existing superstructure member 110 to be removed is supported and lowered. Since the portion can be transmitted to the ground 500 without passing through the piers 102 and 104, the load transmitted to the piers 102 and 104 can be transferred even when the existing upper work member 110 is lowered while being supported. , 104 can be within a range where safety can be ensured.

  As described above, the superstructure member removal equipment 50 according to the second embodiment of the present invention has the same configuration as the superstructure member removal equipment 10 according to the first embodiment, with the span 106 in the piers 102 and 104. It is configured to be provided on the opposite side in the bridge axis direction (the region near the bridge piers 102 and 104 at the ends near the bridge piers 102 and 104 of the spans 126 and 136), and in both the left side equipment 50A and the right side equipment 50B. The opposite side bridge shaft vertical direction connecting member 32 is attached with an opposite side rail holding vertical member 56, and the opposite side rail holding vertical member 56 is attached with an opposite vertical rail 54. The lifting device 24 is attached to the opposite vertical rail 54 so that the lifting device 24 can move in the vertical direction. The bracket 24C of the lifting device 24 is attached to the bridge shaft perpendicular member 26 for receiving the upper work member. On the upper end surface of the rail holding vertical member 56, a remaining portion receiving bridge shaft perpendicular member 36 is attached.

  Further, a reaction force receiving base portion having the same configuration as that of the reaction force receiving base portion 40 of the first embodiment is provided below the opposite-side rail holding vertical member 56, and according to the second embodiment. The reaction force receiving foundation 60 of the superstructure member removal equipment 50 is configured by providing reaction force receiving foundations 40 on both sides of the bridge piers 102 and 104 in the bridge axial direction. The members and devices such as the opposite side rail holding vertical member 56, the opposite side vertical rail 54, and the lifting device 24 are the reaction force receiving bases provided at the ends of the spans 126, 136 near the piers 102, 104. 40 is supported from below.

  For this reason, the superstructure member removal equipment 50 according to the second embodiment of the present invention can be used not only to remove the existing superstructure member 110 in the span 106 between the pier 102 and the pier 104, but also to the pier. This is an embodiment that can also be used to remove the existing superstructure members 120 and 130 in the spans 126 and 136 on the opposite side of the span 106 in the spans 102 and 104.

  The superstructure member removal equipment 50 according to the second embodiment will be further described in comparison with the superstructure member removal equipment 10 according to the first embodiment.

  In the superstructure member removal facility 10 according to the first embodiment, the members and devices directly involved in the vertical movement such as the vertical rail 22, the rail holding vertical member 28, and the lifting device 24 are perpendicular to the bridge axis. When viewed from the direction, it is provided only within the range of the span 106 between the pier 102 and the pier 104. However, in the superstructure member removal equipment 50 according to the second embodiment, the bridge piers 102 and 104 are opposite to the span 106 with respect to the span 106 (the bridge piers 102 and 104 having the spans 126 and 136). Also in the vicinity of the bridge piers 102 and 104 at the end of the side, it is directly involved in the vertical movement of the opposite vertical rail 54, the opposite rail holding vertical member 56, the lifting device 24, etc. Member or device is provided.

  Moreover, in the superstructure member removal equipment 10 which concerns on 1st Embodiment, the reaction force receiving foundation part 40 which consists of the post-stake pile 46 grade | etc., Has a span between the bridge pier 102 and the bridge pier 104 seeing from a bridge axis orthogonal direction. In the reaction force receiving foundation 60 of the superstructure member removal equipment 50 according to the second embodiment of the present invention, the span 106 and the span 106 are the bridge shafts. A reaction force receiving foundation 40 made of a post-stake pile 46 or the like is also provided on the opposite side (in the vicinity of the piers 102, 104 at the ends near the piers 102, 104 of the spans 126, 136). The reaction force receiving foundation 60 of the superstructure member removal facility 50 according to the second embodiment is configured by providing reaction force receiving foundations 40 on both sides of the bridge axis direction for each of the piers 102 and 104.

  Therefore, the superstructure member removal equipment 50 according to the second embodiment of the present invention can be used not only to remove the existing superstructure member 110 in the span 106 between the pier 102 and the pier 104, but also the pier 102. 104, the span 106 can be used to remove the existing superstructure members 120, 130 in the spans 126, 136 on the opposite side to the span 106.

  In addition, the structure similar to the installation about the bridge pier 102 of the superstructure member removal equipment 50 which concerns on this 2nd Embodiment also to the bridge pier of the other end side (the side opposite to the pier 102 in the span 126) of the span 126. The equipment for the pier 104 of the superstructure member removal equipment 50 according to the second embodiment is also provided on the pier on the other end side of the span 136 (the side opposite the pier 104 in the span 136). It is assumed that the equipment with the same configuration as is provided.

(2-2) Configuration of Superstructure Member Replacement Facility According to Second Embodiment Superstructure member replacement facility (not shown) according to the second embodiment of the present invention is a superstructure member according to the first embodiment. The same structure as the rehabilitation equipment 12 is arranged on the opposite side of the span 106 in the bridge piers 102 and 104 (in the vicinity of the bridge piers 102 and 104 near the bridge piers 102 and 104, in the vicinity of the bridge piers 102 and 104). This is a replacement facility that also has a configuration. Accordingly, the description of the configuration of the superstructure member replacement facility 12 according to the first embodiment of the present invention will be replaced with the description of the configuration of the superstructure member replacement facility according to the second embodiment of the present invention. .

  In addition, the structure similar to the equipment about the pier 102 of the superstructure member replacement equipment according to the second embodiment is also applied to the pier on the other end side of the span 126 (the side opposite to the pier 102 in the span 126). The equipment for the pier 104 of the superstructure member replacement equipment according to the second embodiment is also provided on the pier on the other end side of the span 136 (the side opposite to the pier 104 in the span 136). It is assumed that the equipment with the same configuration as is provided.

(2-3) Method for constructing superstructure member removal facility according to second embodiment A superstructure member removal facility 50 according to the second embodiment of the present invention is the same as the superstructure member removal facility 10 according to the first embodiment. Is also provided on the side opposite to the span 106 in the bridge piers 102 and 104 (the region near the bridge piers 102 and 104 at the ends near the bridge piers 102 and 104 of the spans 126 and 136). Therefore, the construction method of the superstructure member removal equipment 10 according to the first embodiment is the same as the bridge shaft direction opposite side of the span 106 in the bridge piers 102 and 104 (ends near the bridge piers 102 and 104 of the spans 126 and 136). By applying to the vicinity of the bridge piers 102 and 104 at the part, it is possible to construct the superstructure member removal equipment 50 according to the second embodiment of the present invention. Therefore, suppose that it replaces with description about the construction method of the superstructure member removal equipment 50 which concerns on 2nd Embodiment of this invention with description about the construction method of the superstructure member removal equipment 10 which concerns on 1st Embodiment.

(2-4) Construction method of superstructure member replacement facility according to second embodiment Superstructure member replacement facility according to the second embodiment of the present invention is a superstructure member replacement facility 12 according to the first embodiment. The same configuration as that of the bridge piers 102 and 104 is also provided on the opposite side to the span 106 in the bridge axial direction (regions near the bridge piers 102 and 104 in the spans 126 and 136 and in the vicinity of the bridge piers 102 and 104). Therefore, the construction method of the superstructure member replacement facility 12 according to the first embodiment is the same as the bridge shaft direction opposite side of the span 106 in the bridge piers 102 and 104 (the bridge piers 102 and 104 having the spans 126 and 136). By applying it to the vicinity of the bridge piers 102 and 104 at the end nearer, it is possible to construct the superstructure member replacement facility according to the second embodiment of the present invention. Accordingly, the description of the construction method of the superstructure member replacement facility 12 according to the first embodiment will be replaced with the description of the construction method of the superstructure member replacement facility according to the second embodiment of the present invention.

(2-5) Superstructure member removal method 50 according to the second embodiment The superstructure member removal equipment 50 according to the second embodiment of the present invention has the same configuration as the superstructure member removal equipment 10 according to the first embodiment. The bridge piers 102 and 104 are also provided on the opposite side of the span 106 from the span 106 (the region near the bridge piers 102 and 104 at the ends near the bridge piers 102 and 104 of the spans 126 and 136). In addition to being used for removing the existing superstructure member 110 in the span 106 between the pier 102 and the pier 104, the spans 126, 136 on the opposite side of the bridge axis direction from the span 106 in the piers 102, 104 are also used. It is comprised so that it can be used also for removal of the existing superstructure members 120 and 130 in the inside. The removal method when removing the existing upper work member 110 in the span 106 using the upper work member removal equipment 50 according to the second embodiment of the present invention is the same as the upper work member removal method according to the first embodiment. Further, the removal method for removing the existing superstructure members 120 and 130 in the spans 126 and 136 on the opposite side of the span 106 in the bridge piers 102 and 104 is the existing method in the span 106. Since it is the same as the removal method at the time of removing the superstructure member 110, with description of the superstructure member removal method which concerns on 1st Embodiment, description about the superstructure member removal method which concerns on 2nd Embodiment of this invention Will be replaced.

  As described above, the bridge pier 102 of the upper work member removal facility 50 according to the second embodiment is also applied to the pier on the other end side of the span 126 (the side opposite to the pier 102 in the span 126). Equipment having the same configuration as the equipment is provided, and the bridge work on the other end side of the span 136 (on the side opposite to the pier 104 in the span 136) of the superstructure member removal facility 50 according to the second embodiment is also provided. It is assumed that equipment having the same configuration as the equipment for the pier 104 is provided.

(2-6) Superstructure member replacement method according to the second embodiment The superstructure member replacement facility according to the second embodiment of the present invention is the same as the superstructure member replacement facility 12 according to the first embodiment. The structure is also provided in the bridge piers 102 and 104 on the side opposite to the span 106 in the span axis direction (the region near the bridge piers 102 and 104 at the ends near the bridge piers 102 and 104 of the spans 126 and 136). In addition, it can be used for the replacement of the existing superstructure member 110 in the span 106 between the pier 102 and the pier 104, and the span on the opposite side of the span 106 from the span 106 in the piers 102 and 104. 126, 136 is configured so that it can also be used to replace the existing superstructure members 120, 130. The replacement method when replacing the existing superstructure member 110 in the span 106 using the superstructure member replacement facility according to the second embodiment of the present invention is the superstructure member replacement method according to the first embodiment. In the bridge piers 102 and 104, the method of replacing the existing superstructure members 120 and 130 in the spans 126 and 136 on the opposite side of the span 106 with respect to the span 106 is the span 106. Since it is the same as the replacement method at the time of replacing the existing superstructure member 110, the superstructure member according to the second embodiment of the present invention will be described with the description of the superstructure member replacement method according to the first embodiment. It will be replaced with an explanation of the replacement method.

  As described above, the bridge pier 102 of the superstructure member replacement facility according to the second embodiment is also applied to the pier on the other end side of the span 126 (the side opposite to the pier 102 in the span 126). Equipment having the same configuration as the equipment is provided, and the bridge pier on the other end side of the span 136 (on the side opposite to the pier 104 in the span 136) is also used for the superstructure replacement equipment according to the second embodiment. It is assumed that equipment having the same configuration as the equipment for the pier 104 is provided.

(2-7) Effects of the Second Embodiment According to the superstructure member removal equipment 50 and superstructure member replacement equipment, the superstructure member removal method, and the superstructure member replacement method according to the second embodiment, the pier 102 , 104 can be removed and replaced by using the lifting device 24 that moves up and down along the vertical rails 22 along the vertical direction, so that the existing superstructure member 110 can be replaced. It is unnecessary to use a heavy machine that reaches the height position, and it is also possible to eliminate the need to construct a vent that reaches the vicinity of the height position of the existing superstructure member 110.

  For this reason, even when removing and replacing the existing superstructure of a viaduct with a high ground clearance, it is possible to reduce the size of heavy machinery, simplify vent equipment, and improve the efficiency of removal and installation work of superstructure. be able to.

  Further, according to the superstructure member removal equipment 50 and superstructure member replacement equipment, the superstructure member removal method and the superstructure member replacement method according to the second embodiment, the span between the bridge pier 102 and the bridge pier 104 is determined. 106 can be used to remove and replace the existing upper work member 110 in the existing bridge 106, and the existing upper work member 120 in the span 126, 136 on the opposite side of the span 106 from the span 106 in the bridge piers 102, 104, It can also be used to remove and replace 130.

(3) Third Embodiment (3-1) Configuration of Superstructure Member Removal Facility According to Third Embodiment FIG. 58 shows a bridge 100 using a superstructure member removal facility 70 according to a third embodiment of the present invention. 60 is a front view showing a state in which the existing superstructure member 110 in the span 106 between the adjacent bridge piers 102 and 104 is removed (a front view of the bridge 100 as viewed from the direction perpendicular to the bridge axis, and the line LVIII in FIG. It is an arrow view) and is a front view showing a state before the existing superstructure member 110 to be removed is lowered. The existing superstructure member 110 to be removed is cut from the bridge 100 by being cut at the cut surfaces 110A and 110B.

  59, the existing superstructure member 110 in the span 106 between the adjacent piers 102 and 104 of the bridge 100 is removed using the superstructure member removal facility 70 according to the third embodiment of the present invention. It is sectional drawing which shows a situation (cross-sectional view which cut | disconnected the center part vicinity of the bridge axis right-angle direction of the bridge 100 in the perpendicular plane parallel to the bridge-axis direction of the bridge 100), and drops the existing superstructure member 110 to remove It is sectional drawing (LIX-LIX sectional view taken on the line of FIG. 60) which shows the previous state.

  In FIG. 60, the existing superstructure member 110 in the span 106 between the adjacent bridge piers 102 and 104 of the bridge 100 is removed using the superstructure member removal facility 70 according to the third embodiment of the present invention. It is sectional drawing (cross-sectional view which cut | disconnected the bridge 100 in the perpendicular plane parallel to the bridge axis orthogonal direction of the bridge 100) which shows a condition, and sectional drawing which shows the state before lowering the existing superstructure member 110 to remove (FIG. 58 and LX-LX sectional view of FIG. 59).

  61, the existing superstructure member 110 in the span 106 between the adjacent piers 102, 104 of the bridge 100 is removed using the superstructure member removal facility 70 according to the third embodiment of the present invention. It is sectional drawing (cross-sectional view which cut | disconnected the bridge 100 in the perpendicular plane parallel to the bridge axis orthogonal direction of the bridge 100) which shows a condition, and sectional drawing which shows the state before lowering the existing superstructure member 110 to remove (FIG. 58 and LXI-LXI cross-sectional view of FIG. 59). As shown in FIG. 58 and FIG. 59 at the cutting position of the cross-sectional view of FIG. 61, FIG. 61 is cut along a vertical plane that passes through the vicinity of the center of the web of the vertical rail 22 It is sectional drawing which shows the cross section obtained by doing.

  62 is an enlarged cross-sectional view of the lower part of FIG. 61, and FIG. 63 is an enlarged view of the LXIII portion of FIG. 64 is a cross-sectional view taken along line LXIV-LXIV in FIG. 62, and FIG. 65 is an enlarged view of a portion LXV in FIG.

  FIG. 66 is a front view of the lower part of the superstructure member removal equipment 70 according to the third embodiment of the present invention as seen from the direction perpendicular to the bridge axis of the bridge 100 (LXVI-LXVI line arrow view of FIG. 62).

  The superstructure member removal facility 70 according to the third embodiment of the present invention is the reaction force receiving foundation portion 80 using the laid steel plate 82 as the reaction force receiving foundation portion 60 of the superstructure member removal facility 50 according to the second embodiment. The configuration of the superstructure member removal equipment 70 according to the third embodiment is the same as the embodiment changed to the above, except that the steel plate 82 is used for the reaction force receiving base 80 and the configuration for responding to it is as follows. Since it is the same as that of the structure of the superstructure member removal equipment 50 which concerns on 2nd Embodiment, in the superstructure member removal equipment 70 which concerns on 3rd Embodiment of this invention, of the superstructure member removal equipment 50 which concerns on 2nd Embodiment. In principle, the same reference numerals and names are used for members and devices corresponding to the members and the device, and description thereof is omitted in principle.

  The superstructure member removal facility 70 according to the third embodiment of the present invention includes a left facility 70A adjacent to the pier 102, a right facility 70B adjacent to the pier 104, and two mounts 10C and 10D. The left side equipment 70A and the right side equipment 70B of the superstructure member removal equipment 70 are arranged to face each other with a distance substantially equal to the length of the existing superstructure member 110 to be removed. The gantry 10 </ b> C, 10 </ b> D is disposed at a position that divides the existing upper work member 110 to be removed into approximately three equal parts when viewed from the direction perpendicular to the bridge axis, and below the existing upper work member 110 to be removed.

  The left side equipment 70 </ b> A and the right side equipment 70 </ b> B of the superstructure member removal equipment 70 have the same configuration, and both have a main body portion 72 and a reaction force receiving base portion 80, and a reaction force below the main body portion 72. A receiving base 80 is arranged. The main body portion 72 is a part having a function of safely lowering while directly supporting the end portion of the existing superstructure member 110 to be removed, and the main body portion 72 of the superstructure member removal facility 70 according to the third embodiment. These are the structures similar to the main-body part 52 of the superstructure member removal equipment 50 which concerns on 2nd Embodiment. The reaction force receiving foundation 80 is a part having a function of safely transmitting at least a part of the load of the existing superstructure member 110 supported by the main body 72 to the ground 500 without passing through the piers 102 and 104. The superstructure member removal equipment 70 according to the third embodiment includes the reaction force receiving base 80, so that at least one of the loads received by the main body 72 when the existing superstructure member 110 to be removed is supported and lowered. Since the portion can be transmitted to the ground 500 without passing through the piers 102 and 104, the load transmitted to the piers 102 and 104 can be transferred even when the existing upper work member 110 is lowered while being supported. , 104 can be within a range where safety can be ensured.

  As described above, the superstructure member removal equipment 70 according to the third embodiment of the present invention uses the steel plate 82 laid on the reaction force receiving base 80, and the superstructure member removal equipment 50 according to the second embodiment. The structure of the superstructure member removal equipment 70 according to the third embodiment is the same as that of the second embodiment, except that the steel plate 82 is used for the reaction force receiving base 80 and the structure for responding thereto. Since it is the same as that of the structure of the superstructure member removal equipment 50 which concerns on embodiment, hereafter, the structure of the reaction force receiving foundation part 80 is demonstrated.

  The reaction force receiving base 80 includes a spread steel plate 82, a sanddle 84, and a receiving beam 86.

  The laid steel plate 82 is a steel plate that is disposed below the main body 72 (the rail holding vertical member 28) and is laid on the ground 500, and is a steel plate having a thickness of about 22 to 25 mm. Most of the vertical downward load received by the main body 72 of the superstructure member removal equipment 70 is transmitted from the laying steel plate 82 to the ground 500. Sanddles 84 are arranged at appropriate intervals on the laid steel plate 82, and receiving beams 86 are arranged on the sandles 84, and the receiving beams 86 are used to hold the rails of the main body 72 of the upper work member removal equipment 70. It is connected to the lower end surface of the vertical member 28 for use.

  The sandle 84 is a member disposed on the laying steel plate 82 and is a member that fills a space between the receiving beam 86 and the laying steel plate 82. The receiving beam 86 is connected to the main body 72 of the upper work member removal equipment 70. It has a role of transmitting the received load to the laid steel plate 82. The shape and the arrangement interval of the sanddle to be arranged are determined according to the load assumed to be received by the receiving beam 86 from the main body 72. In the present third embodiment, as the sanddle 84, a steel beam in which H steel is assembled and stacked is used, but a member that can be used as the sanddle 84 is not limited to this, and the necessary performance is obtained. If it has, the material and shape are not particularly limited.

  The receiving beam 86 is a member disposed at the uppermost portion of the reaction force receiving base 80 and is disposed below the rail holding vertical member 28 and connected to the lower end surface of the rail holding vertical member 28. Yes. Most of the vertical downward load received by the main body 72 of the superstructure member removal equipment 70 is transmitted from the rail holding vertical member 28 of the main body 72 to the receiving beam 86.

  The receiving beam 86 is a member that directly receives most of the vertical downward load received by the main body 72 of the superstructure member removal facility 70 according to the third embodiment of the present invention. To the laid steel plate 82 and to the ground 500. The length of the receiving beam 86 is about the same as that of the connecting member 30 in the direction perpendicular to the bridge axis.

  In the third embodiment, H steel in which a reinforcing plate is welded at an appropriate interval in the length direction is used as the receiving beam 86, and the receiving beam 86 and the sanddle 84 and the rail holding vertical member 28. Between the sanddle 84 and the rail holding vertical member 28 by bolting.

  The reaction force receiving base portion 80 of the third embodiment has a simple configuration as compared with the reaction force receiving base portions 40 and 60 of the first and second embodiments, and is inexpensive in cost. However, the reaction force receiving base portion 80 of the third embodiment may be inferior in load bearing capacity compared to the reaction force receiving base portions 40 and 60 of the first and second embodiments. pay attention to.

(3-2) Configuration of Superstructure Member Replacement Facility According to Third Embodiment The superstructure member removal facility 70 according to the third embodiment of the present invention is lowered while supporting the existing superstructure member 110 to be removed. However, the superstructure replacement equipment (not shown) according to the third embodiment of the present invention has the ability to raise the supporting bridge girder while supporting it. I have. This difference in capability is the difference between the superstructure member removal facility 70 according to the third embodiment of the present invention and the superstructure member replacement facility according to the third embodiment of the present invention.

  The difference in capability can be dealt with by adjusting the output and number of the lifting device 24 and the cross-sectional performance and number of the vertical rail 22 and the rail holding vertical member 28.

  Accordingly, the basic configuration of the superstructure member replacement facility according to the third embodiment of the present invention is the same as the configuration of the superstructure member removal facility 70 according to the third embodiment of the present invention. The description of the configuration of the superstructure member removal facility 70 according to the third embodiment will be replaced with the description of the configuration of the superstructure member replacement facility according to the third embodiment of the present invention.

(3-3) Method of constructing superstructure member removal equipment according to third embodiment As described above, superstructure member removal equipment 70 according to the third embodiment of the present invention is a superstructure member according to the second embodiment. It is an embodiment in which the reaction force receiving base portion 60 of the removal equipment 50 is changed to a reaction force receiving base portion 80 using a laid steel plate 82, and the use of the laid steel plate 82 in the reaction force receiving base portion 80 and corresponding thereto. Since the configuration of the upper work member removal facility 70 according to the third embodiment is the same as the configuration of the upper work member removal facility 50 according to the second embodiment, the configuration of the upper work member removal facility 70 according to the third embodiment is the same as the present embodiment. In the description of the construction method of the superstructure member removal equipment 70, the construction method of the reaction force receiving base 80 will be mainly described. The description of the construction method of the main body 72 of the superstructure member removal equipment 70 according to the third embodiment is the description of the construction method of the main body 20 of the superstructure member removal equipment 10 according to the first embodiment and the second implementation. It replaces with description about the construction method of the main-body part 52 of the superstructure member removal equipment 50 which concerns on a form.

  Hereinafter, the construction method of the superstructure member removal equipment 70 according to the third embodiment will be described in steps, focusing on the construction method of the reaction force receiving foundation 80.

<Step S31>
When constructing the main body 72 of the superstructure member removal facility 70 according to the third embodiment, the position of the ground 500 corresponding to the positions of both ends in the bridge axis direction of the existing superstructure member 110 to be removed (removes The laying steel plate 82 is laid on the ground 500 centering on the ground 500 below the vertical direction at both ends of the existing superstructure member 110 in the bridge axis direction. The laid steel plate 82 is laid out in a sufficiently wide range so that the sanddle 84 disposed on the laid steel plate 82 does not protrude outside the laid steel plate 82.

<Step S32>
A sanddle 84 is installed on the laying steel plate 82 vertically below the rail holding vertical member 28. The sanddle 84 is adjusted to an appropriate height by an adjustment plate or the like.

<Step S33>
The receiving beam 86 is arranged on the sanddle 84 installed on the laying steel plate 82, and the receiving beam 86 is connected to the sanddle 84 with a bolt.

<Step S34>
The integrated vertical rail 22 and rail holding vertical member 28 are lifted by a crane and arranged so that the lower end surface of the rail holding vertical member 28 is arranged on the upper surface of the receiving beam 86. The holding vertical member 28 is connected to the receiving beam 86 with bolts, and the rail holding vertical member 28 is connected to the bridge axis perpendicular connecting member 30 with bolts to hold the first vertical rail 22 and the rail. A vertical member 28 is installed.

  The subsequent steps are the same as steps S12 to S15 described in “(1-3) Construction method of superstructure member removal facility according to first embodiment”.

  In addition, the structure provided in the bridge axis direction opposite side to the span 106 in the bridge piers 102 and 104 (the vicinity of the bridge piers 102 and 104 near the bridge piers 102 and 104 of the spans 126 and 136) is similarly constructed. Can do.

(3-4) Method for constructing superstructure member replacement facility according to third embodiment As described above in “(3-2) Configuration of superstructure member replacement facility according to third embodiment”, Since the basic configuration of the superstructure member replacement facility according to the third embodiment is the same as the configuration of the superstructure member removal facility 70 according to the third embodiment of the present invention, “(3-3) Third With the description of the method for constructing the superstructure member removal equipment 70 according to the third embodiment of the present invention described in "Method for constructing superstructure member removal equipment according to the embodiment", the superstructure according to the third embodiment of the present invention. It will be replaced with an explanation of the construction method of the member replacement facility.

(3-5) Upper Work Member Removal Method According to Third Embodiment As described above, the upper work member removal equipment 70 according to the third embodiment of the present invention is the upper work member removal equipment 50 according to the second embodiment. In this embodiment, the reaction force receiving base portion 60 is changed to a reaction force receiving base portion 80 using a laying steel plate 82, and the reaction force receiving base portion 80 is used with the laying steel plate 82, and to cope with it. Except for the configuration, the configuration of the superstructure member removal facility 70 according to the third embodiment is the same as the configuration of the superstructure member removal facility 50 according to the second embodiment, and thus the top configuration according to the third embodiment. The construction member removal method is the same as the upper construction member removal method according to the second embodiment. Therefore, the description of the method for removing the superstructure member according to the second embodiment will be replaced with the description of the method for removing the superstructure member according to the third embodiment of the present invention.

(3-6) Superstructure member replacement method according to the third embodiment As described above, the superstructure member replacement facility according to the third embodiment of the present invention is the superstructure member replacement method according to the second embodiment. In this embodiment, the reaction force receiving base portion 60 of the equipment is changed to a reaction force receiving base portion 80 using a laid steel plate 82, and the laid steel plate 82 is used for the reaction force receiving base portion 80, and in order to cope with it. Since the configuration of the superstructure member replacement facility according to the third embodiment is the same as the configuration of the superstructure member replacement facility according to the second embodiment, the configuration according to the third embodiment is the same. The superstructure member replacement method is the same as the superstructure member replacement method according to the second embodiment. Accordingly, the description of the superstructure member replacement method according to the second embodiment will be replaced with the description of the superstructure member replacement method according to the third embodiment of the present invention.

(3-7) Effects of the Third Embodiment According to the superstructure member removal equipment 70 and superstructure member replacement equipment, the superstructure member removal method, and the superstructure member replacement method according to the third embodiment, the pier 102 is provided. , 104 can be removed and replaced by using the lifting device 24 that moves up and down along the vertical rails 22 along the vertical direction, so that the existing superstructure member 110 can be replaced. It is unnecessary to use a heavy machine that reaches the height position, and it is also possible to eliminate the need to construct a vent that reaches the vicinity of the height position of the existing superstructure member 110.

  For this reason, even when removing and replacing the existing superstructure of a viaduct with a high ground clearance, it is possible to reduce the size of heavy machinery, simplify vent equipment, and improve the efficiency of removal and installation work of superstructure. be able to.

  Moreover, according to the superstructure member removal equipment 70 and superstructure member replacement equipment, the superstructure member removal method and the superstructure member replacement method according to the third embodiment, the span between the bridge pier 102 and the bridge pier 104 is determined. 106 can be used to remove and replace the existing upper work member 110 in the existing bridge 106, and the existing upper work member 120 in the span 126, 136 on the opposite side of the span 106 from the span 106 in the bridge piers 102, 104, It can also be used to remove and replace 130.

  Further, the reaction force receiving base portion 80 of the third embodiment has a simple configuration as compared with the reaction force receiving base portions 40 and 60 of the first and second embodiments, and is inexpensive in cost. However, the reaction force receiving base portion 80 of the third embodiment may be inferior in load bearing capacity compared to the reaction force receiving base portion 40 of the first embodiment and the reaction force receiving base portion 60 of the second embodiment. Because there is, keep this in mind.

(4) Modified example of removal method of existing superstructure members 112 and 114 left on the pier In the superstructure member removal method of the first to third embodiments, the existing superstructure member 112 left on the piers 102 and 104, When removing 114, it was lifted with a crane (not shown) placed on the ground 500 or the bridge 100, and it was carried out and removed, but the crane cannot be used due to obstacles, interferences, etc. Cases are also envisaged.

  In such a case, the existing upper work members 112 and 114 left on the piers 102 and 104 are drawn onto the existing upper work member 110 to be removed, temporarily placed and fixed, and the existing upper work member 110 is lowered. At the same time, the existing upper work members 112 and 114 may be lowered, and the existing upper work members 112 and 114 may be removed in accordance with the removal of the existing upper work member 110.

  Specifically, it can be performed as in steps S201 to S208 below. In the following description of steps S201 to S208, FIG. 67 to FIG. 73 will be referred to, but FIG. 67 provides the rail facility 600 at a predetermined position on the piers 102 and 104 and also on the existing superstructure member 108. FIG. 68 is a front view schematically showing a state in which the rail facility 602 is provided at a predetermined position (viewed from the direction perpendicular to the bridge axis), and FIG. 68 shows the existing superstructure member up to a position where the rail facilities 600 and 602 can be connected. 110 is a front view schematically illustrating a state in which the existing superstructure members 112 and 114 are mounted on the chill tank 610 on the rail facility 600 after the rail facility 600 and the rail facility 602 are connected and integrated. 69 is an enlarged view of the LXIX portion of FIG. 68, and FIG. 70 shows the existing upper work members 112 and 114 and the rail equipment 60 on the existing upper work member 110. FIG. 71 is a front view schematically showing the state of being pulled up and fixed (viewed from a direction perpendicular to the bridge axis), and FIG. 71 is drawn in and fixed to the existing upper work member 112 and 114 on the existing upper work member 110. FIG. 72 is a front view schematically showing a state in which the existing superstructure member 110 is lowered and placed on the gantry 10C, 10D, and FIG. 72 is a diagram of the existing superstructure to be removed. FIG. 73 is a front view schematically showing a state in which the member 110 is cut on the gantry 10C, 10D (a view seen from the direction perpendicular to the bridge axis), and FIG. 73 is a diagram of the existing superstructure member 110 ( 110X, 110Y, 110Z) and the existing superstructure members 112, 114 are front views schematically showing a state immediately before being lifted and removed by the crane 200 (viewed from a direction perpendicular to the bridge axis). However, the drawings schematically show only the states in main steps, and one drawing may be used for explanation of a plurality of steps.

  In the description of steps S201 to S208 below, when the rail equipment 600, 602 is used when removing the existing superstructure members 112, 114 left on the piers 102, 104, the superstructure member removal of the first embodiment is performed. This will be described as a modification of the method.

<Step S201>
The rail installation 600 is provided on the piers 102 and 104 at positions below the main girder of both ends of the existing upper work member 108 (parts corresponding to the existing upper work members 112 and 114 among the parts of the existing upper work member 108). The rail installation 600 is provided on a portion other than both ends of the existing upper work member 108 (part corresponding to both ends of the existing upper work member 110 out of the existing upper work member 108) as well as provided in the bridge axis direction. Rail equipment 602 is provided in a corresponding position in the direction of the bridge axis. When viewed through from above, the rail facility 600 and the rail facility 602 are in a positional relationship such that they are in a straight line. In the superstructure member removal method of the first to third embodiments, since there are three main girders of the existing superstructure members to be removed, three rail facilities 600 and 602 are also provided. FIG. 67 schematically shows a state where the installation of the rail facilities 600 and 602 is finished.

<Step S202>
The existing upper work member 108 is cut along the cut surfaces 110A and 110B, and is divided into existing upper work members 110, 112, and 114. Then, the existing superstructure member 110 is lowered to a position where the rail facility 600 and the rail facility 602 can be connected (see FIGS. 68 and 69).

<Step S203>
The rail installation 600 and the rail installation 602 are integrated by connecting with bolts (not shown) (see FIGS. 68 and 69).

<Step S204>
The existing superstructure members 112 and 114 left on the piers 102 and 104 are jacked up and mounted on the chill tank 610 installed on the rail facility 600 (see FIGS. 68 and 69). In addition, if it has a predetermined | prescribed function as a roller trolley | bogie, it may replace with the chill tank 610 and may be used.

<Step S205>
The existing upper work members 112 and 114 mounted on the chill tank 610 are drawn and fixed onto the rail equipment 602 on the existing upper work member 110 by a drawing device such as a chill hole (not shown) (see FIG. 70).

<Step S206>
After disassembling and separating the rail equipment 600 and the rail equipment 602 integrated in step S203, the existing upper work member 110 is lowered by the upper work member removal equipment 10 and placed on the gantry 10C, 10D (FIG. 71). reference).

<Step S207>
The existing upper work member 110 is cut in the direction perpendicular to the bridge axis on the gantry 10C, 10D, and divided into approximately three equal parts in the longitudinal direction, and is cut into existing upper work members 110X, 110Y, 110Z (see FIG. 72).

<Step S208>
The existing upper work member 110 (110X, 110Y, 110Z) and the existing upper work members 112, 114 cut on the gantry 10C, 10D are lifted by the crane 200 and carried out and removed (see FIG. 73).

(5) Modification of the method of installing the new superstructure members 162, 164 on the pier In the superstructure replacement method of the first to third embodiments, the new superstructure members 162, 164 are placed on the piers 102, 104. When installing, the crane (not shown) placed on the ground 500 or the bridge 100 is lifted and installed, but there are also cases where the crane cannot be used due to obstacles and interference. .

  In such a case, the new upper work members 162 and 164 are temporarily placed and fixed on the newly installed upper work member 160, and the new upper work members 162 and 164 are set to a predetermined height together with the new upper work member 160. After raising to a position, you may make it install the newly installed superstructure members 162 and 164 to a bridge-axis direction to the predetermined position on the bridge piers 102 and 104 using the rail installation 600,602.

  Specifically, it can be performed as in steps S301 to S306 below. In the following description of steps S301 to S306, FIG. 74 and FIG. 75 are referred to. FIG. 74 provides a rail facility 600 at a predetermined position on the piers 102 and 104, and on the newly installed superstructure member 160. In the front view (figure seen from the direction perpendicular to the bridge axis) schematically showing a state in which the rail facility 602 is provided at a predetermined position and the newly installed upper construction members 162 and 164 are mounted and fixed to the chill tank 610 on the rail facility 602. Yes, FIG. 75 is a front view schematically showing a state in which the rail facility 600 and the rail facility 602 are connected after raising the new superstructure member 160 to a predetermined height position (viewed from the direction perpendicular to the bridge axis). Figure). However, the drawings schematically show only the states in main steps, and one drawing may be used for explanation of a plurality of steps.

  In the following description of steps S301 to S306, when newly installing the superstructure members 162 and 164 on the piers 102 and 104, the rail facilities 600 and 602 are used, and the superstructure member construction of the first embodiment is used. This will be described as a modification of the replacement method.

<Step S301>
The new upper work members 160X, 160Y, 160Z are arranged on the upper work member receiving bridge shaft perpendicular direction member 26 and the mounts 10C, 10D, and these new upper work members 160X, 160Y, 160Z are connected by the attachment plate 160A. After assembling the new superstructure member 160, the rail facility 602 is provided at a predetermined position on the assembled superstructure member 160 (a position corresponding to the main girder position of the new superstructure member 160) (see FIG. 74). Then, the chill tank 610 is installed on the rail facility 602 on the new upper work member 160, and the new upper work members 162 and 164 are mounted and fixed on the chill tank 610 (see FIG. 74).

  Also on the piers 102 and 104, the rail facility 600 is installed in the bridge axis direction at a position corresponding to the position of the rail facility 602. The installed rail facility 600 and the rail facility 602 are straight when viewed from above. Since there are three main girders for the new superstructure member to be replaced, three rail facilities 600 and 602 are also provided.

<Step S302>
The new superstructure member 160 is raised by the superstructure replacement equipment 12 so that the rail equipment 600 on the piers 102 and 104 and the rail equipment 602 on the new superstructure member 160 are at the same height position. To.

<Step S303>
The rail facility 600 and the rail facility 602 are connected and integrated with a bolt (not shown) (see FIG. 75).

<Step S304>
After releasing the fixing of the new upper work members 162 and 164 fixed on the new upper work member 160, the new upper work members 162 and 164 are properly connected to the bridge piers 102 and 104 with a pull-in device such as a chill hole (not shown). Pull into the installation position.

<Step S305>
The newly installed upper work members 162 and 164 are jacked up and installed on the supports (fulcrum points 102A and 104A) of the piers 102 and 104.

<Step S306>
After completing the installation of the new superstructure members 162 and 164 on the supports (fulcrum points 102A and 104A) of the piers 102 and 104, the rail equipment 600 and the rail equipment 602 that are connected and integrated are disassembled and separated. Thereafter, the newly constructed superstructure member 160 is raised to the normal installation height position by the superstructure member replacement facility 12, and the newly constructed superstructure member 162 installed on the support (fulcrum 102A, 104A) of the piers 102, 104, The new superstructure member 160 is connected to the 164 with the attachment plates 160B and 160C (see FIG. 47).

DESCRIPTION OF SYMBOLS 10, 50, 70 ... Upper construction member removal equipment 10A, 50A, 70A ... Left side equipment 10B, 50B, 70B ... Right side equipment 10C, 10D ... Base 12 ... Upper construction member replacement equipment 20, 52, 72 ... Main part 22 ... Vertical rail 22A, 22B, 28A, 28B, 30A ... Flange 22B1, 30A1 ... Bolt 22C, 28C ... Reinforcement plate 22C1 ... Notch 24 ... Lifting device 24A ... Clevis jack 24A1 ... Rod 24B ... H steel clamp 24C ... Bracket 26 ... Bridge shaft perpendicular member 28 for receiving the superstructure member 28: Rail holding vertical member 30 ... Bridge shaft perpendicular member 32 ... Opposite bridge shaft perpendicular member 34 ... Bridge shaft perpendicular member 36 ... Bridge for receiving remaining portion Axis perpendicular direction member 40, 60, 80 ... Reaction force receiving base part 42 ... Footing upper surface fixed mount 44 Height-adjusting gantry 46 ... Post-stake pile 48 ... Receiving beam 54 ... Opposite side vertical rail 56 ... Vertical member for holding opposite side rail 82 ... Laying steel plate 84 ... Sanddle 86 ... Receiving beam 90 ... Bracket 92 ... Anchor 100 ... Bridge 102, 104 ... pier 102A, 104A ... fulcrum 106, 126, 136 ... span 108, 110, 110X, 110Y, 110Z, 112, 114, 120, 130 ... existing superstructure members 110A, 110B, 110C, 110D ... cut surfaces 150, 152 ... Footing 160, 160X, 160Y, 160Z, 162, 164 ... New superstructure member 160A, 160B, 160C ... Joint plate 200, 202, 204 ... Crane 220 ... Aerial work vehicle 250 ... Vibro hammer 500 ... Ground 600, 602 ... Rail equipment 610 ... Chiltan

Claims (31)

An upper work member removal facility that can be used when removing an existing upper work member in a predetermined area within a span between bridge piers adjacent to a bridge axis direction of a bridge from the bridge,
A vertical rail attached to each of the piers adjacent to the bridge axis direction of the bridge in a vertical direction, and positioned within the span as viewed from a direction perpendicular to the bridge axis of the bridge;
A lifting device attached to each of the vertical rails and movable along the vertical rail to which the rails are attached,
With
An upper work member removal facility comprising a number of the lifting devices that can be lowered while supporting the existing upper work member to be removed.   The lifting device includes a telescopic jack and clamp devices attached to both ends of the jack, and is attached to the vertical rail by the clamp device, the clamping device being in the vertical direction The superstructure member removal equipment according to claim 1, wherein the fixing to the rail and the releasing of the fixing can be repeatedly performed. The upper construction member removal equipment can support an upper construction member receiving bridge axis perpendicular member extending in a direction perpendicular to the bridge axis of the bridge, which can support an end portion of the existing upper construction member to be removed from the bridge. , Respectively provided below the both ends of the existing superstructure member,
A plurality of the vertical rails are arranged at intervals in the direction perpendicular to the bridge axis of the bridge for each of the piers adjacent to the bridge axis direction of the bridge,
The lifting device is attached to each of the plurality of vertical rails arranged at intervals in a direction perpendicular to the bridge axis of the bridge, and the lifting devices attached to the vertical rails are used for receiving the upper work member. The superstructure member removal equipment according to claim 1 or 2, wherein the bridge axis perpendicular member is supported from below.   The vertical rail is attached to a rail-holding vertical member extending in substantially the same direction as the vertical rail, and is attached to the pier via the rail-holding vertical member. The superstructure member removal equipment according to any one of claims 1 to 3. At least part of the vertical downward load received by the vertical rail is transmitted to the ground without going through the pier to which the vertical rail is attached,
The load transmitted from the vertical rail to the pier to which the vertical rail is attached is a load within a range in which the safety of the pier is ensured. The superstructure member removal equipment described in any one.   The at least part of the vertical downward load received by the vertical rail is transmitted to the upper surface of the footing that supports the pier to which the vertical rail is attached, and is transmitted to the ground. The superstructure member removal equipment described in 1. The upper work member removal equipment is a position in a direction substantially perpendicular to the bridge axis with respect to an end portion of the existing upper work member to be removed and a position overlapping with an end portion of the existing upper work member to be removed as viewed from above. At least one position has a post-stake,
The superstructure member removal equipment according to claim 5 or 6, wherein at least a part of a vertical downward load received by the vertical rail is transmitted to the ground through the post-stake pile. The upper work member removal equipment is a position in a direction substantially perpendicular to the bridge axis with respect to an end portion of the existing upper work member to be removed and a position overlapping with an end portion of the existing upper work member to be removed as viewed from above. At least one position has a steel sheet laid on the ground,
The superstructure member removal equipment according to any one of claims 5 to 7, wherein at least a part of a vertical downward load received by the vertical rail is transmitted to the ground through the laying steel plate.   The upper construction member removal according to any one of claims 1 to 8, further comprising a bridge axis perpendicular direction connecting member that bridges and connects the vertical rails in a direction perpendicular to the bridge axis of the bridge. Facility.   In the bridge pier, an opposite bridge axis perpendicular connecting member extending in a direction perpendicular to the bridge axis is disposed on the opposite side of the bridge to the bridge axis direction, and on the side of the bridge pier in the direction perpendicular to the bridge axis. A bridge axis direction connecting member extending in the bridge axis direction is disposed, and the bridge axis perpendicular direction connecting member, the opposite bridge axis perpendicular direction connecting member and the bridge axis direction connecting member are wound around the circumference of the bridge pier. The superstructure member removal equipment according to claim 9, which is attached to the pier.   Further, in each of the bridge piers, an opposite vertical rail extending in the vertical direction is also attached to the opposite side of the bridge with respect to the span in the axial direction of the bridge. 11. The upper work member removal facility according to claim 10, wherein a lifting device movable along the vertical rail is attached.   A pedestal on which the existing superstructure member to be removed is placed is provided below the superstructure member to be removed, and the height of the pedestal is 1 m or more and 3 m or less from the ground surface. The superstructure member removal equipment in any one of claim | item 1 -11. A superstructure replacement facility that can be used when a new superstructure member is constructed by removing a preexisting superstructure member in a predetermined area within the span between adjacent piers in the bridge axis direction of the bridge. Because
A vertical rail attached to each of the piers adjacent to the bridge axis direction of the bridge in a vertical direction, and positioned within the span as viewed from a direction perpendicular to the bridge axis of the bridge;
A lifting device attached to each of the vertical rails and movable along the vertical rail to which the rails are attached,
With
An upper work member comprising a number of the lifting devices that can be lowered while supporting the existing upper work member to be removed and that can be raised while supporting the new upper work member to be installed. Replacement equipment.   The lifting device includes a telescopic jack and clamp devices attached to both ends of the jack, and is attached to the vertical rail by the clamp device, the clamping device being in the vertical direction The superstructure member replacement facility according to claim 13, wherein the fixing to the rail and the releasing of the fixing can be repeatedly performed. The upper work member replacement facility can support the end of the existing upper work member to be removed from the bridge from below, and can support the end of the new upper work member from below. A bridge shaft perpendicular direction member for receiving an upper work member extending in a direction perpendicular to the bridge axis of the bridge, respectively, provided below both ends of the existing upper work member,
A plurality of the vertical rails are arranged at intervals in the direction perpendicular to the bridge axis of the bridge for each of the piers adjacent to the bridge axis direction of the bridge,
The lifting device is attached to each of the plurality of vertical rails arranged at intervals in a direction perpendicular to the bridge axis of the bridge, and the lifting devices attached to the vertical rails are used for receiving the upper work member. 15. The superstructure member replacement facility according to claim 13 or 14, wherein the member perpendicular to the bridge axis is supported from below.   The vertical rail is attached to a rail-holding vertical member extending in substantially the same direction as the vertical rail, and is attached to the pier via the rail-holding vertical member. The superstructure member replacement facility according to any one of claims 13 to 15. At least part of the vertical downward load received by the vertical rail is transmitted to the ground without going through the pier to which the vertical rail is attached,
The load transmitted from the vertical rail to the pier to which the vertical rail is attached is a load within a range in which the safety of the pier is ensured. The superstructure replacement equipment described in any one of the above.   The at least part of the vertically downward load received by the vertical rail is transmitted to the upper surface of the footing that supports the pier to which the vertical rail is attached, and is transmitted to the ground. The superstructure replacement equipment described in 1. The upper work member replacement facility is a position in a direction substantially perpendicular to the bridge axis with respect to an end portion of the existing upper work member to be removed and a position overlapping with an end portion of the existing upper work member to be removed. At least one position of the
The superstructure member replacement facility according to claim 17 or 18, wherein at least a part of a vertically downward load received by the vertical rail is transmitted to the ground through the post-stake pile. The upper work member replacement facility is a position in a direction substantially perpendicular to the bridge axis with respect to an end portion of the existing upper work member to be removed and a position overlapping with an end portion of the existing upper work member to be removed. In at least one of the positions, it has a steel sheet laid on the ground,
The superstructure member replacement facility according to any one of claims 17 to 19, wherein at least part of a vertically downward load received by the vertical rail is transmitted to the ground via the laying steel plate. .   21. The upper construction member bridge according to any one of claims 13 to 20, further comprising a bridge axis perpendicular direction connecting member that bridges and connects the vertical rails in a direction perpendicular to the bridge axis of the bridge. Replacement equipment.   In the bridge pier, an opposite bridge axis perpendicular connecting member extending in a direction perpendicular to the bridge axis is disposed on the opposite side of the bridge to the bridge axis direction, and on the side of the bridge pier in the direction perpendicular to the bridge axis. A bridge axis direction connecting member extending in the bridge axis direction is disposed, and the bridge axis perpendicular direction connecting member, the opposite bridge axis perpendicular direction connecting member and the bridge axis direction connecting member are wound around the circumference of the bridge pier. The superstructure member replacement facility according to claim 21, wherein the superstructure member replacement facility is attached to the pier.   Further, in each of the bridge piers, an opposite vertical rail extending in the vertical direction is also attached to the opposite side of the bridge with respect to the span in the axial direction of the bridge. 23. The upper construction member replacement facility according to claim 22, wherein a lifting device movable along the vertical rail is attached.   A pedestal on which the existing superstructure member to be removed is placed is provided below the superstructure member to be removed, and the height of the pedestal is 1 m or more and 3 m or less from the ground surface. The superstructure member replacement facility according to any one of Items 13 to 23. An upper work member removing method for removing an existing upper work member in a predetermined region within a span between bridge piers adjacent to each other in a bridge axis direction of the bridge from the bridge,
A supporting step of supporting the existing superstructure member in the predetermined region with the superstructure member removal facility according to any one of claims 1 to 12,
A separation step of separating the existing upper construction member in the predetermined area supported by the upper construction member removal equipment from the bridge;
A lowering step of lowering the existing upper construction member separated in the separation step with the upper construction member removal equipment;
The superstructure member removal method characterized by providing. An upper work member removing method for removing an existing upper work member in a predetermined region within a span between bridge piers adjacent to each other in a bridge axis direction of the bridge from the bridge,
A supporting step of supporting the existing superstructure member in the predetermined region with the superstructure member removal facility according to claim 12,
A separation step of separating the existing upper construction member in the predetermined area supported by the upper construction member removal equipment from the bridge;
A lowering and placing step of lowering the existing upper work member separated in the separation step with the upper work member removing equipment and placing it on the gantry;
The superstructure member removal method characterized by providing.   27. The method for removing an upper work member according to claim 26, wherein the existing upper work member placed on the mount in the descending placement step is dismantled and then removed. An upper work member replacement method in which an existing upper work member in a predetermined region within a span between bridge piers adjacent to each other in the bridge axis direction of the bridge is removed from the bridge and a new upper work member is installed.
A supporting step of supporting the existing superstructure member in the predetermined region with the superstructure member replacement facility according to any one of claims 13 to 24,
A separation step of separating the existing upper construction member in the predetermined region supported by the upper construction member replacement facility from the bridge;
A lowering step of lowering the existing superstructure member separated in the separation step with the superstructure member replacement facility;
An unloading step of unloading the existing superstructure member lowered in the descending step from the superstructure replacement facility;
After the unloading step, a new superstructure member placement step of placing the superstructure member in the superstructure replacement facility,
The ascending step of raising the newly constructed superstructure member placed on the superstructure member replacement facility in the newly constructed superstructure member replacement step, with the superstructure member replacement facility,
A connecting step of connecting the newly constructed superstructure member raised in the rising step to the bridge;
The superstructure member replacement method characterized by comprising. An upper work member replacement method in which an existing upper work member in a predetermined region within a span between bridge piers adjacent to each other in the bridge axis direction of the bridge is removed from the bridge and a new upper work member is installed.
A supporting step of supporting the existing superstructure member in the predetermined area with the superstructure member replacement facility according to claim 24,
A separation step of separating the existing upper construction member in the predetermined region supported by the upper construction member replacement facility from the bridge;
A lowering mounting step of lowering the existing upper construction member separated in the separation step by the upper construction member replacement facility and placing it on the gantry;
An unloading step of unloading the existing superstructure member placed on the gantry in the descending placement step from the superstructure member replacement facility;
After the unloading step, a new superstructure member placement step of placing the superstructure member in the superstructure replacement facility,
The ascending step of raising the newly constructed superstructure member placed on the superstructure member replacement facility in the newly constructed superstructure member replacement step, with the superstructure member replacement facility,
A connecting step of connecting the newly constructed superstructure member raised in the rising step to the bridge;
The superstructure member replacement method characterized by comprising.   30. The superstructure member replacement method according to claim 29, wherein in the unloading step, the existing superstructure member placed on the gantry is disassembled and then unloaded.   The superstructure member according to claim 29 or 30, wherein, in the new superstructure member placement step, the superstructure member is assembled on the frame and placed on the superstructure replacement equipment. Replacement method.

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