JP7136309B2 - Superstructure material transportation equipment and superstructure material transportation method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a superstructure transporting facility and a superstructure transporting method, and more particularly, to a superstructure transporting facility and superstructure transporting method using a lifting device capable of moving along a rail attached to a bridge pier in the vertical direction. Regarding the method.

Many of Japan's bridges are gradually approaching the time of renewal, and technical development of bridge replacement construction methods has become an important issue. For this reason, many new techniques for bridge replacement have been proposed.

For example, Patent Document 1 discloses a jack installation process of installing a jack under an existing bridge girder, a support process of supporting the existing bridge girder with the jack and cutting the fulcrum of the existing bridge girder, and a bridge girder installation step of installing a new bridge girder on the bridge girder; A replacement method has been proposed. Patent Document 1 describes that according to this bridge girder replacement method, the work of removing the existing bridge girder and the work of constructing the new bridge girder are performed simultaneously, so that the construction period can be shortened.

JP 2016-37775 A

However, with the method of replacing bridge girders described in Patent Document 1, the current method of removing superstructure members, and the method of replacing superstructure members, when targeting viaducts with high ground clearance, venting equipment and heavy machinery are required. It has become large, which has resulted in a prolonged construction period and an increase in cost.

The present invention has been made in view of this point, and even in the case of a viaduct with a high ground clearance, it is possible to reduce the size of heavy machinery, simplify vent equipment, and remove and erect superstructure members. An object of the present invention is to provide an upper construction member transportation facility and an upper construction member transportation method capable of improving efficiency.

The present invention solves the above problems by the following superstructure removing equipment, superstructure replacing equipment, superstructure removing method, and superstructure replacing method.

That is, the superstructure member removal equipment according to the present invention is an upper structure member that can be used when removing from a bridge an existing superstructure member in a predetermined area within a span between bridge piers adjacent in the axial direction of the bridge. A construction member removal facility, which is attached vertically to each of the bridge piers adjacent in the bridge axis direction of the bridge, and positioned within the span when viewed from the direction perpendicular to the bridge axis of the bridge. Equipped with a rail and an elevating device attached to each of the vertical rails and movable along the vertical rail to which it is attached, the existing superstructure member to be removed is lowered while supporting it. It is a superstructure member removal facility characterized by comprising the above-mentioned lifting devices as many as can be.

Here, in the present application, "the span between the piers adjacent in the axial direction of the bridge" means the fulcrum of the piers adjacent in the axial direction of the bridge that support the existing superstructure members of the bridge (the existing upper part fulcrum for supporting the construction member) and fulcrum (fulcrum for supporting the existing upper construction member), and in the present application, it may be simply referred to as "span".

In addition, ``a superstructure member removal equipment that can be used when removing existing superstructure members in a predetermined area within a span between piers adjacent in the axial direction of a bridge from the bridge, In the description, "existing superstructure members in a predetermined area within the span between the piers adjacent in the axial direction of the bridge" means that the piers and the vertical rails do not overlap when viewed from above. It is the portion of the existing superstructure within the span. This is to be interpreted in the same manner in similar descriptions elsewhere in the present application.

In addition, in the description of ``vertical rails attached vertically to each of the piers adjacent in the axial direction of the bridge,'' the term ``attached'' means only the cases where the rails are directly attached to the piers. The concept also includes the case where the bridge pier is indirectly attached to the bridge pier via another member. This is to be interpreted in the same manner in similar descriptions elsewhere in the present application.

Specifically, for example, the following lifting device may be employed as the lifting device. That is, it is provided with an extendable jack and a clamp device attached to each end of the jack, and is attached to the vertical rail by the clamp device, and the clamp device is attached to the vertical rail. A lifting device that can repeatedly fix and release the fixing may be employed.

As a more specific configuration of the superstructure member removing equipment, for example, the following configuration may be adopted. That is, the bridge axis perpendicular direction member for receiving the superstructure member extending in the direction perpendicular to the bridge axis of the bridge, which can support the end of the existing superstructure member to be removed from the bridge from below, is attached to the existing superstructure member. The vertical rails are provided below both ends of the bridge, and a plurality of the vertical rails are arranged at intervals in the direction perpendicular to the bridge axis for each of the bridge piers adjacent to the bridge axis direction, and the bridge of the bridge The lifting device is attached to each of the vertical rails arranged at intervals in the axis-perpendicular direction, and the lifting device attached to each of the vertical rails supports the bridge-axis-perpendicular member for receiving the superstructure member from below. You may employ|adopt the structure which carries out.

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 bridge pier via the rail holding vertical member. You may

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

Here, in ``at least part of the vertically downward load received by the vertical rail is transmitted to the ground without passing through the bridge piers to which the vertical rail is attached'', ``the vertical load received by the vertical rail The "downward load" includes not only the load transmitted to the vertical rail via other members, but also the weight of the vertical rail itself. Further, at least part of the vertically downward load received by the vertical rail is "transmitted to the ground" means that at least part of the vertically downward load is directly transmitted from the vertical rail to the ground. The concept also includes the case where at least part of the vertically downward load is indirectly transmitted from the vertical rails to the ground via members other than the bridge piers. These matters shall be similarly interpreted in similar descriptions elsewhere in the present application.

In the present application, piers do not include footings, and piers refer to parts of substructures above the footings.

In the superstructure member removal facility, at least a portion 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. It may be configured as

Here, in "at least part of the vertically downward load received by the vertical rail is transmitted to the ground by being transmitted to the upper surface of the footing that supports the bridge pier to which the vertical rail is attached," At least part of the vertically 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 part of the vertically downward load is transferred from the vertical rail to the upper surface of the footing. At least a part of the vertically downward load is indirectly transmitted from the vertical rail to the upper surface of the footing via a member other than the pier. It is a concept that includes the case where it is transmitted to the ground after being processed. This is to be interpreted in the same manner in similar descriptions elsewhere in the present application.

When viewed from above, a post-strike is performed at at least one of a position substantially perpendicular to the bridge axis with respect to the end of the existing superstructure member to be removed and a position overlapping the end of the existing superstructure member to be removed. The superstructure member removing facility may be provided with piles, and at least part of the vertically downward load received by the vertical rail may be transmitted to the ground via the post-placed piles.

Here, in "at least part of the vertically downward load received by the vertical rail is transmitted to the ground via the post-placed pile", at least one of the vertically downward load received by the vertical rail "Transmitted to the ground via the post-placed pile" means that at least part of the vertically downward load is directly transmitted from the vertical rail to the post-placed pile and transferred to the ground. Not only the case, but also the case where at least part of the vertically downward load is indirectly transmitted from the vertical rail to the post-placed pile via another member other than the bridge pier and is transmitted to the ground. is. Also, post-cast piles are piles that are driven into the ground after construction of the bridge, rather than piles that are driven into the ground during bridge construction to support the bridge. This is to be interpreted in the same manner in similar descriptions elsewhere in the present application.

When viewed from above, at least one of a position substantially perpendicular to the bridge axis with respect to the end of the existing superstructure member to be removed and a position overlapping the end of the existing superstructure member to be removed. The superstructure member removing equipment is provided with laying steel plates laid down so that at least part of the vertically downward load received by the vertical rails is transmitted to the ground via the laying steel plates. good too.

Here, in "at least part of the vertically downward load received by the vertical rail is transmitted to the ground through the laying steel plate", at least part of the vertically downward load received by the vertical rail "Transmitted to the ground through the laying steel plate" means that at least part of the vertically downward load is directly transmitted from the vertical rail to the laying steel plate and transmitted to the ground. However, the concept also includes the case where at least part of the vertically downward load is indirectly transmitted from the vertical rail to the laying steel plate via another member other than the bridge pier and is transmitted to the ground. A laying steel plate is a steel plate laid on the ground. These matters shall be similarly interpreted in similar descriptions elsewhere in the present application.

The superstructure member removing equipment may be configured by further comprising a bridge-axis-perpendicular-direction connecting member that bridges and connects between the vertical rails in the bridge axis-perpendicular direction of the bridge.

Here, in the ``bridge axis-perpendicular direction connecting member that spans and connects between the vertical rails in the bridge axis perpendicular direction of the bridge'', the term ``bridge and connects'' means the bridge axis-perpendicular direction connecting member is directly connected to the vertical rails, and not only the case where the bridge axis perpendicular direction connecting member bridges the vertical rails and connects them, but also when the bridge axis perpendicular direction connecting member is connected to another member It is a concept including the case where it is indirectly connected to the vertical rails via and the bridge axis perpendicular direction connecting member bridges and connects between the vertical rails. This is to be interpreted in the same manner in similar descriptions elsewhere in the present application.

In the bridge pier, on the opposite side of the bridge in the bridge axis direction from the span, an opposite side connecting member extending in the direction perpendicular to the bridge axis is arranged, and on the side of the pier in the direction perpendicular to the bridge axis Axial connecting members extending in the direction of the bridge axis are arranged so that the connecting member perpendicular to the bridge axis, the connecting member perpendicular to the opposite side and the connecting member in the axial direction wrap around the pier. The superstructure removal facility may be configured such that it is attached to the pier.

Further, in each of the bridge piers, an opposite side vertical rail extending in the vertical direction is attached on the opposite side of the bridge in the axial direction of the bridge from the span, and the opposite side vertical rail is attached to each of the opposite side vertical rails. The superstructure member removal equipment may be configured by attaching a lifting device that can move along.

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

The superstructure member replacement facility according to the present invention removes the existing superstructure members from the bridge in a predetermined area within the span between the piers adjacent in the bridge axis direction of the bridge, and constructs the new superstructure members. It is a superstructure replacement facility that can be used at times, and is attached in the vertical direction to each of the bridge piers adjacent to the bridge axis direction of the bridge, and the span when viewed from the bridge axis direction of the bridge said existing superstructure to be removed, provided with a vertical rail located inside and a lifting device attached to each of said vertical rails and capable of moving along said vertical rail to which it is attached; The superstructure member replacement facility is characterized by comprising a number of lifting devices capable of supporting and lowering the members and also supporting and raising the new superstructure members to be erected.

Specifically, for example, the following lifting device may be employed as the lifting device. That is, it is provided with an extendable jack and a clamp device attached to each end of the jack, and is attached to the vertical rail by the clamp device, and the clamp device is attached to the vertical rail. A lifting device that can repeatedly fix and release the fixing may be employed.

As a more specific configuration of the superstructure member replacement facility, for example, the following configuration may be adopted. That is, in the direction perpendicular to the bridge axis, 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. are provided below both ends of the existing superstructure members. A plurality of vertical rails 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, and is attached to each of the vertical rails. A configuration may be adopted in which the lifting device supports the bridge axis perpendicular direction member for receiving the superstructure member 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 bridge pier via the rail holding vertical member. You may

At least part of the vertically downward load received by the vertical rail is transmitted to the ground without passing through the bridge pier to which the vertical rail is attached, and the vertical rail is attached from the vertical rail. In addition, it is preferable to configure the superstructure replacement facility so that the load transmitted to the pier is within a range in which the safety of the pier is ensured.

At least a 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. A replacement facility may be configured.

When viewed from above, a post-strike is performed at at least one of a position substantially perpendicular to the bridge axis with respect to the end of the existing superstructure member to be removed and a position overlapping the end of the existing superstructure member to be removed. A pile may be provided, and the superstructure replacement facility may be configured such that at least part of the vertically downward load received by the vertical rail is transmitted to the ground via the post-placed pile. .

When viewed from above, at least one of a position substantially perpendicular to the bridge axis with respect to the end of the existing superstructure member to be removed and a position overlapping the end of the existing superstructure member to be removed. A laying steel plate is provided, and the superstructure replacement facility is constructed so that at least part of the vertically downward load received by the vertical rail is transmitted to the ground via the laying steel plate. may

The superstructure replacement equipment may be configured by further comprising a bridge-axis-perpendicular-direction connecting member that bridges and connects between the vertical rails in the bridge axis-perpendicular direction of the bridge.

In the bridge pier, on the opposite side of the bridge in the bridge axis direction from the span, an opposite side connecting member extending in the direction perpendicular to the bridge axis is arranged, and on the side of the pier in the direction perpendicular to the bridge axis Axial connecting members extending in the direction of the bridge axis are arranged so that the connecting member perpendicular to the bridge axis, the connecting member perpendicular to the opposite side and the connecting member in the axial direction wrap around the pier. The superstructure replacement facility may be constructed such that it is attached to the pier by means of a bridge.

Further, in each of the bridge piers, an opposite side vertical rail extending in the vertical direction is attached on the opposite side of the bridge in the axial direction of the bridge from the span, and the opposite side vertical rail is attached to each of the opposite side vertical rails. The superstructure member replacement facility may be configured by attaching a lifting device that can move along.

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

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

A second aspect of the superstructure member removing method according to the present invention is superstructure member removal for removing from the bridge an existing superstructure member in a predetermined area within a span between piers adjacent in the bridge axis direction of the bridge. The method comprises a supporting step of supporting the existing superstructure member in the predetermined area by the superstructure member removal equipment provided with the pedestal; a separation step of separating the superstructure member from the bridge; and a lowering and placing step of lowering the existing superstructure member separated in the separation step by the superstructure member removal equipment and placing it on the mount. The method for removing the superstructure member is characterized by:

In the second aspect of the superstructure member removing method, the existing superstructure member placed on the pedestal in the step of descending and placing may be dismantled and then removed.

A first aspect of the superstructure member replacement method according to the present invention is to remove the existing superstructure members in a predetermined area within the span between the bridge piers adjacent to each other in the axial direction of the bridge, and to construct a new superstructure by removing the existing superstructure members from the bridge. A superstructure replacement method for erecting construction members, comprising: a supporting step of supporting the existing superstructure in the predetermined area by the superstructure replacement equipment; and supporting by the superstructure replacement equipment. a separating step of separating the existing superstructure members in the predetermined area from the bridge; a lowering step of lowering the existing superstructure members separated in the separating step by the superstructure replacement equipment; and the lowering step. a carrying-out step of carrying out the lowered existing superstructure member from the superstructure member replacement facility; and a new superstructure of placing the new superstructure member on the superstructure member replacement facility after the carrying-out step. a member placing step; a lifting step of raising the new superstructure member placed on the superstructure member replacement equipment in the new superstructure member placement step by the superstructure member replacement equipment; and a connection step of connecting the new superstructure member raised in step 1 to the bridge.

A second aspect of the superstructure member replacement method according to the present invention is to remove the existing superstructure members in a predetermined area within the span between the bridge piers adjacent to each other in the axial direction of the bridge and replace the new superstructure with the new superstructure. A superstructure replacement method for erecting construction members, comprising: a supporting step of supporting the existing superstructure in the predetermined area by means of superstructure replacement equipment provided with the pedestal; a separating step of separating the existing superstructure members in the predetermined area supported by the replacement equipment from the bridge; a carrying-out step of carrying out the existing upper construction member placed on the pedestal in the lowering-and-placing step from the upper construction member replacement facility; and after the carrying-out step, the a new superstructure member placement step of placing the new superstructure member on the superstructure member replacement facility; and the new superstructure member placed on the superstructure member replacement facility in the new superstructure member placement step. and a connecting step of connecting the new superstructure raised in the lifting step to the bridge. The method.

In the second aspect of the superstructure member replacement method, in the carrying-out step, the existing superstructure member mounted on the pedestal may be dismantled before being carried out.

In the second aspect of the superstructure replacement method, in the step of placing the new superstructure, the new superstructure is assembled on the mount and placed on the superstructure replacement facility. may

According to the present invention, it is possible to reduce the size of heavy equipment, simplify the venting equipment, and improve the efficiency of removal and erection work of superstructure members, even when the object is a viaduct with a high ground clearance.

FIG. 7 is a front view of the superstructure member removing equipment 10 according to the first embodiment of the present invention, showing a state before the existing superstructure member 110 to be removed is lowered (view along line I in FIG. 7). FIG. 8 is a front view of the superstructure member removal equipment 10 according to the first embodiment of the present invention, showing a state after the existing superstructure member 110 to be removed is lowered (view along line II in FIG. 8). 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 existing superstructure member 110 is lifted by the crane 200 after being cut and removed (as viewed from line III in FIG. 9). figure) FIG. 7 is a cross-sectional view of the superstructure member removal equipment 10 according to the first embodiment of the present invention, showing a state before the existing superstructure member 110 to be removed is lowered (cross-sectional view taken along line IV-IV in FIG. 7). FIG. 8 is a cross-sectional view showing a state after the existing superstructure member 110 to be removed has been lowered in the superstructure member removal equipment 10 according to the first embodiment of the present invention (sectional view along line VV in FIG. 8). A cross-sectional view (VI-VI line in FIG. 9) showing a state immediately before lifting and removing the lowered existing superstructure member 110 by crane 200 after cutting the superstructure member removal equipment 10 according to the first embodiment of the present invention. cross section) FIG. 4 is a cross-sectional view showing the state of the superstructure member removal equipment 10 according to the first embodiment of the present invention before the existing superstructure member 110 to be removed is lowered (cross-sectional view taken along line VII-VII in FIGS. 1 and 4). FIG. 2 is a cross-sectional view showing a state after the existing superstructure member 110 to be removed is lowered in the superstructure member removal equipment 10 according to the first embodiment of the present invention (a cross-sectional view taken along line VIII-VIII in FIGS. 2 and 5). A cross-sectional view (IX in FIGS. 3 and 6) showing a state immediately before lifting and removing the lowered existing superstructure member 110 by the crane 200 after cutting the superstructure member removal equipment 10 according to the first embodiment of the present invention. -IX line sectional view) FIG. 4 is a cross-sectional view (cross-sectional view taken along the line XX in FIGS. 1 and 4) of the superstructure member removal equipment 10 according to the first embodiment of the present invention, before the existing superstructure member 110 to be removed is lowered. Sectional drawing which expands and shows the lower part of FIG. Enlarged view of section XII in FIG. XIII-XIII line sectional view of FIG. Enlarged view of XIV part in FIG. FIG. 11 is a front view of the lower part of the superstructure member removing equipment 10 according to the first embodiment of the present invention, viewed from the direction perpendicular to the bridge axis of the bridge 100 (view along line XV-XV in FIG. 11). 1 is a front view of the upper part of the superstructure member removing equipment 10 according to the first embodiment of the present invention, viewed from the direction perpendicular to the bridge axis of the bridge 100 (enlarged view of XVI in FIG. 1). FIG. 2 is a side view of the upper part of the superstructure member removing equipment 10 according to the first embodiment of the present invention, viewed from the bridge axis direction of the bridge 100. FIG. XVIII-XVIII line sectional view of FIG. FIG. 3 is a longitudinal view of the vertical rail 22 attached to the rail holding vertical member 28; FIG. 2 is a diagram 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 (viewed from the direction perpendicular to the bridge axis). FIG. 3 is a diagram 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 (viewed from the bridge axis direction). FIG. 2 is a side view (viewed from the direction of the bridge axis) schematically showing one of the steps in constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention. FIG. 1 is a front view (viewed from a direction perpendicular to the bridge axis) schematically showing one of the stages in constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention. FIG. 1 is a front view (viewed from a direction perpendicular to the bridge axis) schematically showing one of the stages in constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention. FIG. 2 is a side view (viewed from the direction of the bridge axis) schematically showing one of the steps in constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention. FIG. 1 is a front view (viewed from a direction perpendicular to the bridge axis) schematically showing one of the stages in constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention. Front view showing the temporary support bracket 90 (viewed from the direction perpendicular to the bridge axis) Side view showing the temporary support bracket 90 (view from the bridge axis direction) FIG. 26 is a cross-sectional view schematically showing one of the steps in constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention (cross-sectional view taken along line XXIX-XXIX in FIG. 26). FIG. 2 is a side view (viewed from the direction of the bridge axis) schematically showing one of the steps in constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention. FIG. 1 is a front view (viewed from a direction perpendicular to the bridge axis) schematically showing one of the stages in constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention. FIG. 31 is a cross-sectional view schematically showing one of the stages in constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention (cross-sectional view taken along line XXXII-XXXII in FIG. 31). FIG. 2 is a side view (viewed from the direction of the bridge axis) schematically showing one of the steps in constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention. FIG. 1 is a front view (viewed from a direction perpendicular to the bridge axis) schematically showing one of the stages in constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention. FIG. 34 is a cross-sectional view schematically showing one of the steps in constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention (cross-sectional view taken along line XXXV-XXXV in FIG. 34). 2 shows a state in which a predetermined amount of the load of the existing superstructure member 108 before cutting is supported from below by the superstructure receiving bridge axis perpendicular direction member 26 in the superstructure member removal method according to the first embodiment. Front view FIG. 3 is a front view showing a state immediately after the existing superstructure member 110 to be removed is separated from the bridge 100 in the superstructure member removing method according to the first embodiment; FIG. 4 is a front view showing a state in which an existing superstructure member 110 to be removed is lowered and placed on the bases 10C and 10D in the superstructure member removing method according to the first embodiment; FIG. 2 is a front view showing a state in which an existing superstructure member 110 to be removed is cut off on mounts 10C and 10D in the superstructure member removing method according to the first embodiment; FIG. 11 is a front view showing a state immediately before the existing superstructure members 110 (110X, 110Y, 110Z) cut on the mounts 10C, 10D are lifted by the crane 200 and removed in the superstructure member removal method according to the first embodiment; FIG. 4 is a front view showing a state after removing the existing superstructure member 110 in the superstructure member removing method according to the first embodiment; In the method for removing the superstructure members 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 also completed (the existing superstructure bridged between the piers 102 and 104). Front view showing the state after removing all the superstructure members 108) In the superstructure member replacement method according to the first embodiment, new superstructure members 162 and 164 (short new superstructure members 162 and 164 arranged at both ends of the span 106) are newly installed on the bridge piers 102 and 104. Front view showing the installed state In the superstructure member replacement method according to the first embodiment, the new superstructure members 160X, 160Y, and 160Z that constitute the newly installed superstructure member 160 are placed by a crane (not shown) as a bridge axis perpendicular direction member for receiving the superstructure structure. 26 and pedestals 10C and 10D. FIG. 3 is a front view showing a state in which newly installed superstructure members 160X, 160Y, and 160Z are connected by a splicing plate 160A and a newly installed superstructure member 160 is assembled in the superstructure replacement method according to the first embodiment. In the superstructure member replacement method according to the first embodiment, the newly installed superstructure member 160 is raised by the lifting device 24 and placed at a predetermined height position as the superstructure of the bridge 100. front view showing FIG. 11 is a front view showing a state in which the connection of the new superstructure member 160 to the bridge 100 is completed in the superstructure member replacement method according to the first embodiment; FIG. 11 is a front view showing a state before lowering an existing superstructure member 110 to be removed in the superstructure member removal equipment 50 according to the second embodiment of the present invention; FIG. 11 is a front view showing a state after lowering an existing superstructure member 110 to be removed in the superstructure member removal equipment 50 according to the second embodiment of the present invention; FIG. 11 is a front view showing a state immediately before removing an existing lowered superstructure member 110 by lifting it with a crane 200 after cutting the superstructure member removal equipment 50 according to the second embodiment of the present invention; A cross-sectional view showing a state before the existing superstructure member 110 to be removed is lowered in the superstructure member removal equipment 50 according to the second embodiment of the present invention (the cutting position is the cutting position indicated by the IV-IV line in FIG. 7). similar position) A cross-sectional view showing a state after the existing superstructure member 110 to be removed has been lowered in the superstructure member removal equipment 50 according to the second embodiment of the present invention (the cutting position is the cutting position indicated by the VV line in FIG. 8). position similar to A cross-sectional view showing a state immediately before removing the lowered existing superstructure member 110 by lifting it with a crane 200 after cutting the superstructure member removal equipment 50 according to the second embodiment of the present invention (the cutting position is VI in FIG. 9). - Position similar to the cutting position shown on the VI line) A cross-sectional view showing a cut surface obtained by cutting the lower part of the superstructure member removing equipment 50 according to the second embodiment of the present invention along a vertical plane parallel to the bridge axis direction (the cutting position is the cutting position indicated by the XIII-XIII line in FIG. 11) position similar to The front view of the lower part of the superstructure removing equipment 50 according to the second embodiment of the present invention, viewed from the direction perpendicular to the axis of the bridge 100. FIG. 48 is a front view of the upper part of the superstructure removing equipment 50 according to the second embodiment of the present invention, viewed from the direction perpendicular to the bridge axis of the bridge 100 (enlarged view of the LVI part in FIG. 48). LVII-LVII line sectional view of FIG. FIG. 11 is a front view showing a state before lowering an existing superstructure member 110 to be removed with respect to the superstructure member removal equipment 70 according to the third embodiment of the present invention; FIG. 60 is a cross-sectional view showing a state before the existing superstructure member 110 to be removed is lowered in the superstructure member removal equipment 70 according to the third embodiment of the present invention (a cross-sectional view along the LIX-LIX line in FIG. 60). FIG. 58 is a cross-sectional view showing a state before the existing superstructure member 110 to be removed is lowered in the superstructure member removal equipment 70 according to the third embodiment of the present invention (a cross-sectional view taken along line LX-LX in FIGS. 58 and 59). FIG. 59 is a cross-sectional view showing a state before the existing superstructure member 110 to be removed is lowered in the superstructure member removal equipment 70 according to the third embodiment of the present invention (a cross-sectional view along the line LXI-LXI in FIGS. 58 and 59). Sectional view showing an enlarged lower part of FIG. Enlarged view of LXIII section in FIG. LXIV-LXIV line sectional view of FIG. Enlarged view of LXV part in FIG. FIG. 62 is a front view of the lower part of the superstructure removing equipment 70 according to the third embodiment of the present invention, viewed from the direction perpendicular to the bridge axis of the bridge 100 (as viewed from the line LXVI-LXVI in FIG. 62). A modification of the method for removing the superstructure members of the first embodiment (when using the rail facilities 600 and 602 when removing the existing superstructure members 112 and 114 left on the bridge piers 102 and 104) will be described as follows. Schematic front view FIG. 11 is a front view schematically showing a state of one step of a modified example of the method for removing the superstructure member of the first embodiment; Enlarged view of LXIX part in FIG. A modification of the method for removing the superstructure members of the first embodiment (when using the rail facilities 600 and 602 when removing the existing superstructure members 112 and 114 left on the bridge piers 102 and 104) will be described as follows. Schematic front view FIG. 11 is a front view schematically showing a state of one step of a modified example of the method for removing the superstructure member of the first embodiment; FIG. 11 is a front view schematically showing a state of one step of a modified example of the method for removing the superstructure member of the first embodiment; FIG. 11 is a front view schematically showing a state of one step of a modified example of the method for removing the superstructure member of the first embodiment; A state of one step of a modified example of the superstructure member replacement method of the first embodiment (in the case of using rail facilities 600 and 602 when newly installing superstructure members 162 and 164 on bridge piers 102 and 104) Front view schematically showing FIG. 8 is a front view schematically showing a state of one step of a modified example of the method for replacing the superstructure of the first embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION A superstructure member removing facility, a superstructure member replacement facility, a superstructure member removal method, and a superstructure member replacement method according to embodiments of the present invention will be described below in detail with reference to the drawings.

In the following explanation, there are explanations with the assumption that the existing girders to be removed and the new girders to be newly erected are made of steel. In the material replacement facility, superstructure member removal method, and superstructure member replacement method, superstructure members using materials other than steel for main girders (for example, superstructures equipped with concrete girders or composite girders as main girders member) can also be targeted.

(1) First embodiment (1-1) Configuration of superstructure member removal equipment according to the first embodiment FIGS. 1 is a front view (a front view seen from a direction perpendicular to the bridge axis of the bridge 100) showing a situation in which an existing superstructure member 110 in a span 106 between adjacent piers 102 and 104 is being removed. FIG. 1 is a front view (view from line I in FIG. 7) showing the state before the existing superstructure member 110 to be removed is lowered, and FIG. 2 is the state after the existing superstructure member 110 to be removed is lowered. 3 is a front view (view along line II in FIG. 8) showing a state immediately before the lowered existing superstructure member 110 is lifted up by a crane 200 and removed after being cut (III in FIG. 9). line arrow view). Note that the span 106 between the piers 102 and 104 is, in detail, the area between the fulcrum 102A on the pier 102 and the fulcrum 104A on the pier 104. As shown in FIG. Moreover, the existing superstructure member 110 to be removed is separated from the bridge 100 by being cut along the cut surfaces 110A and 110B.

4 to 6 show the removal of the existing superstructure member 110 in the span 106 between the adjacent piers 102, 104 using the superstructure member removal equipment 10 according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view showing the situation (a cross-sectional view taken near the center of the bridge 100 in the direction perpendicular to its axis on a vertical plane parallel to the axis direction of the bridge 100). 4 is a cross-sectional view (cross-sectional view taken along line IV-IV in FIG. 7) showing the state before the existing superstructure member 110 to be removed is lowered, and FIG. 5 is a state after the existing superstructure member 110 to be removed is lowered. FIG. 6 is a cross-sectional view (cross-sectional view taken along the line VV in FIG. 8) showing the state, and FIG. 6 is a cross-sectional view showing the state immediately before the lowered existing superstructure member 110 is lifted up by a crane 200 and removed after being cut (FIG. 9). is a sectional view taken along the line VI-VI).

7 to 9 show the removal of an existing superstructure member 110 in a span 106 between adjacent piers 102 and 104 of a bridge 100 using the superstructure member removal equipment 10 according to the first embodiment of the present invention. 2 is a cross-sectional view (a cross-sectional view of the bridge 100 taken along a vertical plane parallel to the direction perpendicular to the bridge axis of the bridge 100) showing a state where the bridge 100 is in a state where the bridge 100 is closed. FIG. 7 is a cross-sectional view (sectional view taken along line VII-VII in FIGS. 1 and 4) showing the state before the existing superstructure member 110 to be removed is lowered, and FIG. FIG. 9 is a cross-sectional view (cross-sectional view taken along line VIII-VIII in FIGS. 2 and 5) showing the state after being lowered, and FIG. 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 positions of the cross-sectional view of FIG. 7, FIGS. 2 and 5 show the cutting positions of the cross-sectional view of FIG. 8, and FIGS. 3 and 6 show the cutting positions of the cross-sectional view of FIG. 7 to 9, the parts other than the existing superstructure members 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 shown, but only hooks and the like used for hoisting are shown, and reference numeral 200 is attached to the hooks and the like.

FIG. 10 shows removal of an existing superstructure member 110 in a span 106 between adjacent piers 102 and 104 of a bridge 100 using the superstructure member removal equipment 10 according to the first embodiment of the present invention. FIG. 4 is a cross-sectional view showing the situation (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), and a cross-sectional view showing the state before the existing superstructure member 110 to be removed is lowered (Fig. 1 and a cross-sectional view taken along line XX of FIG. 4). As shown in FIGS. 1 and 4 where the cross-sectional view of FIG. 10 is cut, FIG. It is a sectional view showing a section obtained by doing.

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

FIG. 15 is a front view of the lower part of the superstructure removing equipment 10 according to the first embodiment of the present invention, viewed from the direction perpendicular to the bridge axis of the bridge 100 (view along line XV-XV in FIG. 11).

FIG. 16 is a front view (enlarged view of XVI in FIG. 1) of the upper portion of the superstructure removing equipment 10 according to the first embodiment of the present invention, viewed from the direction perpendicular to the bridge axis of the bridge 100, and FIG. 1 is a side view of the upper portion of the superstructure member removing equipment 10 according to the first embodiment of the present invention, viewed from the axial direction of the bridge 100. FIG. 18 is a cross-sectional view taken along line XVIII-XVIII of FIG. 16. FIG. However, in FIG. 18, only the members of the body portion 20 are shown.

In addition, below, the bridge axis direction of the bridge 100 may be simply described as "bridge axis direction", and the bridge axis right angle direction of the bridge 100 may simply be described as "bridge axis right angle direction".

The superstructure member removing facility 10 according to the first embodiment of the present invention comprises a left side facility 10A close to a bridge pier 102, a right side facility 10B close to a bridge pier 104, and two pedestals 10C and 10D. The left side facility 10A and the right side facility 10B of the superstructure member removal facility 10 are arranged facing each other while being separated in the bridge axis direction by a length substantially equal to the length of the existing superstructure member 110 to be removed. The pedestals 10C and 10D are arranged at a position that divides the existing superstructure member 110 to be removed into three equal parts when viewed from the direction perpendicular to the bridge axis, and below the existing superstructure member 110 to be removed.

The left side facility 10A and the right side facility 10B of the superstructure member removing facility 10 have the same configuration. A receiving base 40 is arranged. The body part 20 is a part having a function of directly supporting the end of the existing superstructure member 110 to be removed and lowering it safely. The reaction force receiving base portion 40 is a portion having a function of safely transmitting at least part of the load of the existing superstructure member 110 supported by the main body portion 20 to the ground 500 without passing through the piers 102 and 104 . The superstructure member removal equipment 10 according to the first embodiment is provided with the reaction force receiving base portion 40, so that at least one of the loads received by the main body portion 20 when lowering the existing superstructure member 110 to be removed while supporting it. can be transmitted to the ground 500 without passing through the piers 102, 104. Therefore, even when the main body 20 is lowered while supporting the existing superstructure 110, the load is transmitted to the piers 102, 104. can be within a range where the safety of the piers 102, 104 can be ensured.

When explaining the members that make up the body portion 20 and the members that make up the reaction force receiving base portion 40, they may be described as members of the left side equipment 10A or right side equipment 10B. 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 given the same reference numerals, and the members of either the left equipment 10A or the right equipment 10B In some cases, only one member is taken up and described, and the description of the other corresponding member is omitted.

The main body 20 includes a vertical rail 22, a lifting device 24, a bridge axis perpendicular member 26 for receiving superstructure members, a rail holding vertical member 28, a bridge axis perpendicular connecting member 30, and an opposite side bridge. It has an axis-perpendicular connection member 32, an abutment-direction connection member 34, and an abutment-receiving abutment-perpendicular member 36.

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

Also, the vertical rail 22 is located within the span 106 between the piers 102 and 104 when viewed from the direction perpendicular to the bridge axis of the bridge 100, and its position is on the opposite sides of the piers 102 and 104. , and 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 planes 110A and 110B, and the vertical rail 22 as a whole is located at the cut planes 110A and 110B. It is located at a position closer to the piers 102 and 104 than the above. Therefore, when viewed from above, the existing superstructure member 110 to be removed does not overlap not only the piers 102 and 104 but also the vertical rails 22 .

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

In addition, in the first embodiment, the vertical rail 22 is attached to the rail holding vertical member 28, which is made of H steel and has a cross section larger than that of the vertical rail 22, and is attached to the bridge piers 102 and 104. . FIG. 19 is a longitudinal view of the vertical rail 22 attached to the rail holding vertical member 28. As shown in FIG. The vertical rail 22 is provided with reinforcing plates 22C at appropriate intervals, and the rail holding vertical member 28 is provided with reinforcing plates 28C at appropriate intervals. The reinforcing plate 22C of the vertical rail 22 is provided with a notch 22C1 near the flange 22A so as not to interfere with the lifting device 24 that moves vertically.

Based on the weight of the existing superstructure 110 to be removed and the output of the lifting devices 24, the required number of lifting devices 24 is calculated, and the number of vertical rails 22 equal to or greater than the required number of lifting devices 24 is installed on the bridge piers 102, 104. do. Since the same number of lifting devices 24 are arranged in the vicinity of the opposite sides of the bridge piers 102 and 104 located near both ends of the existing superstructure member 110 to be removed, the number of lifting devices 24 that is more than half of the calculated required number of lifting devices 24 Only the vertical rails 22 and the lifting devices 24 are installed on the bridge piers 102 and 104, respectively. Here, the number of vertical rails 22 and lifting devices 24 to be installed is set to "more than half" of the required number obtained by calculation because half of the required number obtained by calculation is Although it is sufficient to install them on each of the piers 102 and 104, the total output of the lifting devices 24 that support the existing superstructure members 110 to be removed is calculated by installing only more than half of the required number on each of the piers 102 and 104. This is to the effect that a margin may be obtained. However, if you install more than the required number, the cost will increase significantly, so keep that in mind.

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

Between the vertical rail 22 of the left equipment 10A and the pier 102 and between the vertical rail 22 of the right equipment 10B and the pier 104, as shown in FIGS. A rail holding vertical member 28 extending in the same direction as the rail 22 is arranged. As described above, the vertical rails 22 are made of H steel, and the rail holding vertical members 28 are also made of H steel. As shown in FIG. 14, the flange 22B of the vertical rail 22 closer to the pier 102 is attached to the flange 28A of the rail holding vertical member 28 farther from the pier 102 with a bolt 22B1. 22 is connected to a vertical rail holding member 28 so that the longitudinal direction thereof is the same. 18, 1, 11, 13, etc., when the rail holding vertical direction member 28 is attached to the bridge axis perpendicular direction connecting member 30, the bridge axis perpendicular direction connecting member 30, The connecting member 32 in the direction perpendicular to the bridge axis and the connecting member 34 in the direction of the bridge axis on the opposite side are arranged so as to wrap around each of the piers 102 and 104, and are attached to the piers 102 and 104 without gaps. It is attached to 102, 104 so as to be integrally secured. Therefore, the vertical rail 22 is integrated with the piers 102 and 104 via the rail holding vertical member 28, the vertical connecting member 30, the opposite connecting member 32 and the connecting member 34. are attached to the piers 102, 104 so as to be permanently fixed.

However, the connecting member 30, the connecting member 32, and the connecting member 34, which are arranged so as to wrap around each of the piers 102, 104, are post-strike anchors and the like. It is not attached to the piers 102 and 104 by jointing with , but is arranged so as to wrap around 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 rails 22 and the rail holding vertical members 28 is hardly transmitted to the piers 102 and 104, and is not transmitted to the vertical direction. Most of the downward load applied to the rail 22 and rail holding vertical member 28 is transmitted to the ground 500 via the reaction force receiving base portion 40 . The transverse connecting member 30, the opposite transverse connecting member 32, and the transverse connecting member 34 transmit the downward load applied to the vertical rail 22 and the rail holding vertical member 28 to the piers 102, 104. Even 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, the vertical rail 22 and the rail holding vertical member 28 are supported so that they can be maintained in an upright position. 34 roles.

Specifically, H-steel, for example, can be used as the bridge axis-perpendicular direction connecting member 30, the opposite side bridge axis-perpendicular direction connection member 32, and the bridge axis direction connection member .

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

As shown in FIGS. 16, 17, 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 bridge axis perpendicular direction member 26 for receiving the superstructure member from below. The bridge axis perpendicular direction member 26 for receiving the superstructure member is a long steel member having a length equal to or longer than the length of the existing superstructure member 110 in the bridge axis perpendicular direction. , and the bridge axis-perpendicular direction members 26 for receiving superstructure support both ends of the existing superstructure 110 in the bridge axis direction from below.

20 and 21 are diagrams schematically showing a mechanism in which the clevis jacks 24A and the H steel clamps 24B of the lifting device 24 move along the vertical rails 22, and FIG. 20 is a diagram seen from the bridge axis direction. , and FIG. 21 is a view seen from the direction of the bridge axis. 20 and 21, the illustration of the bracket 24C and the bridge axis perpendicular direction member 26 for receiving the superstructure member is omitted.

20(a) and 21(a) show the state in which the rod 24A1 of the clevis jack 24A is retracted, in which the H-steel clamp 24B attached to the lower end of the clevis jack 24A is released and the clevis An 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. 20(b) and 21(b), 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, then the H steel clamp 24B attached to the tip of the rod 24A1 is released, and the rod 24A1 is contracted (Fig. 20 ( c) and the state shown in FIG. 21(c). 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 steel clamp 24B attached to the lower end of the clevis jack 24A By releasing the steel clamp 24B, the lift 24 returns to a state similar to that of FIGS. 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. 20(a) to (c) and FIGS. 21(a) to (c), the lifting device 24 can move downward along the vertical rails 22. FIG. When moving the lifting device 24 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 are reversed from when moving downward. .

The superstructure member removing equipment 10 according to the first embodiment uses four lifting devices 24 in each of the left side equipment 10A and the right side equipment 10B, and a total of eight lifting devices 24 (eight clevis jacks 24A). I am using In order to smoothly lower the existing superstructure member 110 downward, it is necessary to synchronize the operations of a total of eight clevis jacks 24A. It can be carried out.

The bridge axis perpendicular direction member 26 for receiving the superstructure member is a long steel member having a length equal to or longer than the length of the existing superstructure member 110 in the bridge axis perpendicular direction. , and supports both ends of the existing superstructure member 110 in the bridge axis direction from below. In addition, the bridge axis perpendicular direction member 26 for receiving the superstructure member is supported from below by four brackets 24C of the four elevating devices 24, and as the elevating device 24 moves in the vertical direction, the superstructure member The bridge-axle-perpendicular-direction member 26 for receiving can also be moved vertically.

In the first embodiment, the H steel to which reinforcing plates are welded at suitable intervals in the longitudinal direction is used as the bridge axis perpendicular direction member 26 for receiving the superstructure 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 is connected to the vertical rail 22 of the left facility 10A and the pier. 102 and between the vertical rail 22 of the right facility 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 reinforces and stiffens the vertical rails 22 and serves as a connecting portion when the vertical rails 22 are spliced together in the longitudinal direction. By providing the vertical members 28 for holding the rails, it is possible to eliminate the need for members such as splints to be attached to the vertical rails 22 even when the vertical rails 22 are spliced together in the longitudinal direction. Therefore, by providing the rail holding vertical member 28, the vertical rail 22 can perform its original role (to directly connect and support the lifting device 24 that moves up and down along the vertical rail 22 and The role of guiding the direction of movement) is easily demonstrated.

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

As shown in FIGS. 1 to 18, the connecting members 30 in the direction perpendicular to the bridge axis are H steel members arranged in the direction perpendicular to the bridge axis on the sides of the bridge piers 102 and 104 in the direction of the bridge axis. A total of four are arranged by opening the Further, they are arranged between the rail holding vertical member 28 of the left facility 10A and the pier 102 and between the rail holding vertical member 28 and the pier 104 of the right facility 10B. Further, as shown in FIG. 14, the flange 28B of the vertical rail holding member 28 is connected to the flange 30A of the vertical connecting member 30 by a bolt 30A1. are respectively connected to four rail holding vertical members 28 in a grid pattern.

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

Furthermore, as shown in FIGS. 18, 1 to 3, and 7 to 10, the transverse connecting member 30, the opposite transverse connecting member 32, and the transverse connecting member 34 are connected to the bridge piers 102, 104, and are attached to the piers 102 and 104 without gaps, and are attached to the piers 102 and 104 so as to be integrally fixed. Therefore, the effect of preventing concentration of stress on a specific rail holding vertical member 28 and an increase in horizontal displacement of only a specific rail holding vertical member 28 is further enhanced.

18, of the four rail holding vertical members 28, the bridge axial connecting member 34 corresponds to the two rail holding vertical members 28 located outside in the direction perpendicular to the bridge shaft. (Near both ends of the perpendicular direction connecting member 30 and the opposite side connecting member 32 in the perpendicular direction). The directional connecting members 32 are connected to each other, and the axial direction connecting members 34 are connected in the direction perpendicular to the bridge axis for each perpendicular connecting member 30 and one opposite transverse connecting member 32. 4 are arranged. Axial direction connecting members 34 are also arranged near both ends of the perpendicular direction connecting member 30 and the opposite side connecting member 32 in the direction perpendicular to the axis, so that the connecting member 30 and the opposite side bridge are connected. By being connected to the transverse connecting member 32 , the axial connecting member 34 also improves the rigidity near both ends of the transverse connecting member 30 and the opposite transverse connecting member 32 .

The bridge axis perpendicular direction member 36 for receiving the remaining portion is made of steel to support the existing superstructure members 112 and 114 remaining above the piers 102 and 104 from below after the existing superstructure member 110 is cut along the cut surfaces 110A and 110B. and has a length equal to or greater than the length of the existing superstructure members 112 and 114 in the direction perpendicular to the bridge axis. The bridge axis perpendicular direction member 36 for receiving the remaining portion is arranged horizontally in the direction perpendicular to the bridge axis, supported from below by four rail holding vertical direction members 28, and mounted above the bridge piers 102, 104. The remaining existing superstructure members 112, 114 are supported from below so as not to fall from the piers 102, 104. - 特許庁More specifically, four left-behind portion receiving bridge axis right-angled members 36 are arranged so that the upper end surfaces of the four rail holding vertical members 28 abut against the bottom surfaces of the left-behind portion receiving bridge axis right-angled members 36 . The four rail holding vertical members 28 support the remaining portion receiving vertical member 36 from below.

In the first embodiment, as the bridge axis perpendicular direction member 36 for receiving the remaining part, H steel to which reinforcing plates are welded at appropriate intervals in the length direction is used. The member 36 is connected to the four rail holding vertical members 28 by bolting.

Above, each member constituting the main body 20 of the superstructure member removing facility 10 according to the first embodiment of the present invention has been described. Next, the superstructure member removing facility 10 according to the first embodiment of the present invention. Each member constituting the reaction force receiving base portion 40 will be described.

The reaction force receiving base portion 40 is a portion having a function of safely transmitting at least part of the load of the existing superstructure member 110 supported by the main body portion 20 to the ground 500 without passing through the piers 102 and 104 . The superstructure member removal equipment 10 according to the first embodiment is provided with the reaction force receiving base portion 40, so that at least one of the loads received by the main body portion 20 when lowering the existing superstructure member 110 to be removed while supporting it. can be transmitted to the ground 500 without passing through the piers 102, 104. Therefore, even when the main body 20 is lowered while supporting the existing superstructure 110, the load is transmitted to the piers 102, 104. can be within a range where the safety of the piers 102, 104 can be ensured.

As shown in FIGS. 11 and 12 , the reaction force receiving foundation 40 includes a footing upper surface fixing base 42, a height adjusting base 44, a post-strike pile 46, and a receiving beam 48. It has a role of transmitting to the ground 500 the vertically downward load received by the main body 20 of the superstructure member removing equipment 10 according to the first embodiment of the present invention. As described above, the transverse connecting member 30, the opposite transverse connecting member 32, and the transverse connecting member 34 are not attached to the piers 102 and 104 by post-strike anchors or the like. , are arranged so as to wrap around each of the piers 102 and 104, and are only in close contact with the outer peripheral surfaces of the piers 102 and 104, so 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 piers 102 and 104, and 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. Most of is transmitted to the ground 500 via the reaction force receiving foundation 40 .

The footing upper surface fixed mount 42 is an H steel installed on the upper surface of the footings 150 and 152 in parallel with the side surfaces of the piers 102 and 104 facing each other in the bridge axis direction, and is in direct contact with the upper surface of the footings 150 and 152. are arranged as In addition, regarding the arrangement position of the footing upper surface fixing base 42 in relation to the position of the existing superstructure member 110, the footing upper surface fixing base 42 is positioned relative to the end of the existing superstructure member 110 to be removed when viewed from above. and at least one of a position substantially perpendicular to the bridge axis and a position overlapping the end of the existing superstructure member 110 to be removed.

The height adjustment mount 44 is arranged on the footing upper surface fixed mount 42 and is a member whose height can be adjusted with an adjustment plate or the like. Adjust to the same height position.

Part of the vertically downward load transmitted from the main body portion 20 of the superstructure member removing 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 fixed stand 42 and the height adjustment stand. 44 to the footings 150 and 152 and then to the ground 500 .

The post-placed piles 46 are installed on the upper surfaces of the footings 150, 152 of the piers 102, 104, and are installed on the side of the footing upper surface fixed base 42 and the height adjustment base 44 in the direction perpendicular to the bridge axis (viewed from above, the existing superstructure to be removed). At least one of a position that is substantially perpendicular to the bridge axis with respect to the end of the member 110 and a position that overlaps with the end of the existing superstructure member 110 to be removed). be. Part of the vertically downward load transmitted from the main body portion 20 of the superstructure member removing 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-placed pile 46. transmitted.

In the first embodiment, the H-steel is used as the post-strike pile 46, but a member other than the H-steel may be used as the post-strike pile 46, for example, a concrete pile or the like may be used.

It should be noted that the vertical downward load transmitted from the main body 20 of the superstructure removing equipment 10 according to the first embodiment of the present invention to the reaction force receiving base 40 is controlled by the footing upper surface fixed stand 42 and the height adjustment stand 44. If it is confirmed that the load can be safely transmitted to the ground 500 only by transmitting it to the footings 150 and 152 via the , the driving of the post-placed pile 46 may be omitted.

Conversely, only the vertically downward load transmitted from the main body portion 20 of the superstructure member removing facility 10 according to the first embodiment of the present invention to the reaction force receiving base portion 40 is transmitted to the post-placed pile 46. If it can be confirmed that the force can be safely transmitted to the ground 500, the installation of the footing upper surface fixing base 42 and the height adjusting base 44 may be omitted.

The receiving beam 48 is a member arranged at the top of the reaction force receiving base portion 40, is arranged below the vertical rail holding member 28, and is connected to the lower end surface of the vertical rail holding member 28. there is Most of the vertically downward load that the main body 20 of the superstructure member removing equipment 10 receives is transmitted from the rail holding vertical members 28 of the main body 20 to the receiving beams 48 .

The receiving beam 48 is a member that directly receives most of the vertically downward load received by the main body 20 of the superstructure member removing facility 10 according to the first embodiment of the present invention. The power is transmitted to the ground 500 through the footings 150 and 152 via the adjustment mount 44 and the footing upper fixed mount 42 , and to the ground 500 via the post-placed pile 46 . The length of the receiving beam 48 is about the same length as the connecting member 30 in the direction perpendicular to the bridge axis.

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

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 was demonstrated. In the description, H-steel was often taken up as a specific example used for each member, but members other than H-steel may be used as long as they have the performance required for each member.

At the end of the description of the configuration of the superstructure member removing equipment 10 according to the first embodiment of the present invention, the pedestals 10C and 10D will be described.

As described above, the superstructure member removing facility 10 according to the first embodiment of the present invention includes the left side facility 10A adjacent to the bridge pier 102, the right side facility 10B adjacent to the bridge pier 104, two pedestals 10C and 10D, However, the mounts 10C and 10D are arranged below the existing superstructure member 110 to be removed at a position that roughly divides the existing superstructure member 110 to be removed into three equal parts when viewed from the direction perpendicular to the bridge axis. , the existing superstructure member 110 to be removed, which has been lowered by the superstructure member removal equipment 10, is placed on the bases 10C and 10D.

The existing superstructure members 110 placed on the pedestals 10C and 10D are cut along the cutting planes 110C and 110D so that the length in the longitudinal direction is shortened, and then cut by the crane 200 (FIGS. 3, 6 and 9). reference) to lift it up and remove it.

By providing the mounts 10C and 10D, the lifting device 24 can be prevented 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. Further, by placing the existing superstructure member 110 to be removed on the bases 10C and 10D instead of on the ground surface of the ground 500, it becomes easier to cut and dismantle the existing superstructure member 110. To prevent the lifting device 24 from interfering with the footings 150, 152 of the bridge piers 102, 104 and the ground 500 even when the lifting device 24 is lowered, and to facilitate the cutting and dismantling work of the existing superstructure member 110.例文帳に追加From this point of view, the height of the mounts 10C and 10D from the ground surface of the ground 500 is preferably 1 m or more and 3 m or less.

(1-2) Structure of superstructure member replacement equipment according to the first embodiment The superstructure member removal equipment 10 according to the first embodiment of the present invention lowers the existing superstructure member 110 to be removed while supporting it. In addition to that, the superstructure replacement equipment 12 (see FIGS. 43 to 47) according to the first embodiment of the present invention supports and raises the new bridge girder to be erected. have the ability to This difference in capability is the difference between the superstructure member removal facility 10 according to the first embodiment of the present invention and the superstructure member replacement facility 12 according to the first embodiment of the present invention.

The difference in capability can be accommodated by adjusting the output and number of the lifting devices 24 and the cross-sectional performance and number of the vertical rails 22 and rail holding vertical members 28 .

Therefore, 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 removing facility 10 according to the first embodiment of the present invention will replace the description of the configuration of the superstructure member replacement facility 12 according to the first embodiment of the present invention.

Normally, the existing superstructure members 110 to be removed include not only main girders but also floor slabs and the like. The new superstructure members 160 to be erected (see FIGS. 45 to 47) are usually only main girders, and the floor slabs to be newly installed are the bridge 100 after the new main girders are erected at predetermined positions of the bridge 100 It will be cast at the height position as the superstructure of the Therefore, in a normal case, the weight of the existing superstructure member 110 to be removed is larger than the weight of the new superstructure member 160 to be newly constructed, so the superstructure member removal equipment 10 according to the first embodiment of the present invention can be used as it is as the upper construction member replacement facility 12 according to the first embodiment of the present invention.

(1-3) Construction method of superstructure member removal facility according to first embodiment A construction method of the superstructure member removal facility 10 according to the first embodiment of the present invention will be described. The case of constructing is taken up and explained. The same is true when constructing the right facility 10B close to the bridge pier 104.

22 to 26, 30, 31, 33, and 34 are front views schematically showing the states of each stage when constructing the superstructure member removing facility 10 according to the first embodiment of the present invention. FIG. 27 is a front view showing the temporary receiving bracket 90, FIG. 28 is a side view showing the temporary receiving bracket 90 (as viewed from line XXVIII in FIG. 27), FIGS. 35A and 35B are cross-sectional views from above of cut surfaces obtained by cutting the bridge pier 102 along a horizontal plane in each stage of constructing the superstructure removing equipment 10 according to the first embodiment of the present invention. is. However, in FIGS. 29, 32, and 35, only the members of the body portion 20 are shown. 24, 26, 31, and 34, the illustration of the post-placed pile 46 is omitted for convenience of illustration.

Hereinafter, a method for constructing the superstructure member removing equipment 10 according to the first embodiment of the present invention will be described step by step. However, the drawings schematically show only the states of major steps, and one drawing may be used to describe a plurality of steps.

<Step S1>
Excavation is performed up to the top of the footing 150 of the pier 102 to expose the upper surface of the footing 150 of the pier 102 (see FIGS. 22 to 24).

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

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

<Step S4>
H-beams are placed on the ground 500 on the outside of the installed footing top surface fixed mount 42 and height adjustment mount 44 in the direction perpendicular to the bridge axis, and on the ground 500 corresponding to the position of both outer girders of the existing superstructure member 108 to be removed or the position outside thereof. A post-strike pile 46 consisting of is driven. The post-placed pile 46 can be driven using, for example, a vibro-hammer 250 lifted by a crane 202 (see FIGS. 22 and 23). If the footing 150 is so long in the direction perpendicular to the bridge axis that it reaches the positions of both outer girders of the existing superstructure member 108 to be removed, the post-strike pile 46 is not necessary in principle.

<Step S5>
Adjust the height of the height adjustment frame 44 with an adjustment plate (not shown) or the like so that the top height of the height adjustment frame 44 and the top height of the post-placed pile 46 are the same (see FIG. 22). .

<Step S6>
After the crown height of the height-adjustable frame 44 and the crown height of the post-strike pile 46 are made the same, the receiving beam 48 is lifted by the crane 204 on the top surface of the height-adjustment frame 44 and the top end surface of the post-strike pile 46. and bolted to the height-adjustable pedestal 44 and the post-placed pile 46 (see FIGS. 22 and 24). For convenience of illustration, FIG. 24 omits the description of the post-placed pile 46 .

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

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

Here, since the space under the girder is narrow, the uppermost connecting member 30 and the opposite side connecting member 32 are pulled in the direction perpendicular to the bridge axis from the outside of the existing superstructure member 108 under the girder ( 25 and 26).

<Step S9>
After placing the vertical connecting member 30 and the opposite connecting member 32 on the temporary support bracket 90 and installing them along both sides of the pier 102 in the axial direction, the connecting member in the vertical direction is installed. 34 are installed along both sides of the bridge pier 102 in the direction perpendicular to the bridge axis, and are connected to the connection member 30 in the direction perpendicular to the axis and the connection member 32 in the opposite side in the direction perpendicular to the axis, and connect the connection member 30 in the direction perpendicular to the axis on the opposite side The connecting member 32 in the direction perpendicular to the bridge axis and the connecting member 34 in the direction of the bridge axis are arranged so as to wrap around the circumference of the pier 102, attached to the pier 102 without gaps, and attached so as to be integrally fixed to the pier 102 ( 26 and 29). During this installation, the length of the connecting member 34 in the axial direction is adjusted to match the width of the pier 102 in the axial direction using an adjusting plate (not shown) or a giraffe jack (not shown). It should be noted that the transverse connecting member 30, the opposite transverse connecting member 32 and the transverse connecting member 34 are attached to the pier 102 without any gaps and fixed to the pier 102 integrally.

Axial direction connecting members 34 are also attached near both end portions of the longitudinal direction connecting member 30 and the opposite side connecting member 32 in the direction perpendicular to the longitudinal direction.

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

In addition, a curing material such as a cushion material is placed on the surface of the bridge pier 102 at the height position where the bridge axis perpendicular direction connecting member 30, the opposite side bridge axis direction connecting member 32, and the bridge axis direction connecting member 34 are installed. A curing material such as a cushioning material is placed between the axis-perpendicular connecting member 30, the opposite side connecting member 32, and the connecting member 34 in the opposite direction and the surface of the pier 102 to prevent damage to the pier 102. It is preferable to avoid

<Step S10>
The vertical rail 22 and the rail holding vertical member 28 are connected on the ground with bolts 22B1 to be integrated (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 support beam 48, The rail holding vertical members 28 are connected to the receiving beams 48 with bolts, and the rail holding vertical members 28 are connected to the connecting members 30 perpendicular to the bridge axis with bolts to form the vertical rails 22 and the rails of the first stage. A vertical holding member 28 is installed (see FIGS. 30 and 31).

<Step S12>
After completing the installation of the vertical rails 22 and the rail-holding vertical members 28 of the first stage, the integrated vertical rails 22 and the rail-holding vertical members 28 are successively installed on the previously installed vertical rails 22 and the rail-holding vertical members 28 by the required number of stages. The directional rail 22 and the rail holding vertical member 28 are arranged in a predetermined position so as to be aligned with each other, and the rail holding vertical member 28 is connected to the bridge axis perpendicular direction connecting member 30 with bolts ( 30 and 31). Also, vertically adjacent rail holding vertical members 28 (for example, the first stage rail holding vertical member 28 and the second stage rail holding vertical member 28) are connected with each other by a splicing plate or the like. At that time, attention should be paid to the accuracy control of the interval between the vertical rails 22, the accuracy control of the verticality of the vertical rails 22, and the accuracy control of the misalignment of the joint portion between the vertical rails 22.

FIG. 32 shows a cross-sectional view (a cross-sectional view taken along the line XXXII-XXXII in FIG. 31) of a cross section obtained by cutting the bridge pier 102 along a horizontal plane after this installation is completed.

<Step S13>
After attaching the lifting device 24 to each vertical rail 22 and connecting the interlocking operation panel (not shown) and the hydraulic hose (not shown), the clevis jacks 24A and H steel clamps 24B of all the lifting devices 24 are make it possible to link

<Step S14>
After aligning the heights of the brackets 24C of the lifting devices 24 attached to the vertical rails 22 by means of an interlocking operation panel (not shown), the crane 204 lifts the bridge perpendicular direction member 26 for receiving the superstructure. Lift it up and attach the bridge axis perpendicular direction member 26 for receiving the superstructure member to the bracket 24C (see FIG. 33).

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

Completion of step S15 completes the construction of the superstructure member removing facility 10 according to the first embodiment of the present invention. FIG. 34 shows a front view (a front view of the bridge pier 102 seen from the direction perpendicular to the bridge axis) in a state where step S15 is completed, and FIG. 35 shows a sectional view taken along line XXXV-XXXV of FIG. However, in FIG. 34, the illustration of the post-placed pile 46 is omitted for the convenience of illustration, and in FIG.

(1-4) Construction method of the superstructure member replacement facility according to the first embodiment As described above in "(1-2) Configuration of the superstructure member replacement facility according to the 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. , "(1-3) Method for constructing superstructure member removing equipment according to first embodiment", the present invention , instead of the description of the construction method of the superstructure replacement facility 12 according to the first embodiment.

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

The step S106 of 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, but normally Since the remaining existing superstructure members 112 and 114 are also removed, this step S106 is also included in the superstructure member removal method according to the first embodiment.

FIG. 36 is a front view showing a state in which a predetermined amount of the load of the existing superstructure member 108 before cutting is supported from below by the superstructure receiving bridge-axis-perpendicular member 26, and FIG. FIG. 38 is a front view showing a state immediately after the existing superstructure 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 superstructure member 110 to be removed is lowered and placed on the mounts 10C and 10D. FIG. 39 is a front view showing a state in which the existing superstructure member 110 to be removed is cut on the mounts 10C and 10D, and FIG. 40 is a diagram showing the existing superstructure member 110 ( 110X, 110Y, 110Z) are lifted by a crane 200 and removed, and FIG. 41 is a front view showing a state after the existing superstructure member 110 is removed, is the state after the removal of the existing superstructure members 112 and 114 remaining on the piers 102 and 104 has been completed (after all the removal of the existing superstructure members 108 bridging between the piers 102 and 104 has been completed). 2) is a front view showing the state of FIG.

Hereinafter, the method for removing the superstructure member according to the first embodiment will be described step by step with reference to FIGS. 36 to 42. FIG.

<Step S101>
As shown in FIG. 36, the lifting device 24 is lifted along the vertical rail 22, and the load of the existing superstructure member 108 before cutting is transferred to the superstructure receiving bridge axis perpendicular direction member 26, and the residual portion A liner plate (not shown) is installed on the upper surface of the supporting bridge perpendicular member 36, and it is already installed equally on the bridge perpendicular member 26 for receiving the superstructure member and the bridge perpendicular member 36 for receiving the remaining part. The load of the superstructure member 108 is borne (supporting step).

<Step S102>
After the load of the existing superstructure member 108 is equally divided between the bridge-axis perpendicular direction member 26 for receiving the superstructure and the bridge-axis direction direction perpendicular direction member 36 for receiving the remaining part, the bridge axis-direction direction member 26 for receiving the superstructure member and the bridge axis perpendicular direction member 36 for receiving the remaining part (the position of the cut surface 110A and the position of the cut surface 110B in FIG. 37), as shown in FIG. 108 is cut and cut into existing superstructure members 110, 112 and 114 (separation step).

Immediately after cutting at the cut surfaces 110A and 110B (the state before the lifting device 24 is lowered), as shown in FIG. 26, and both ends of the existing superstructure member 112 are supported from below by the fulcrum 102A on the pier 102 and the bridge axis perpendicular direction member 36 for receiving the remaining part. 114 is supported from below at both ends thereof by the bridge axis perpendicular direction member 36 for receiving the remaining portion and the fulcrum 104A on the bridge pier 104. As shown in FIG.

<Step S103>
As shown in FIG. 38, the lifting device 24 is lowered (lowering process), and the existing superstructure member 110 to be removed is placed on the bases 10C and 10D (lowering and placing process). Specifically, the height position of the lifting device 24 (superstructure member The height position of the bridge axis perpendicular direction member 26 for receiving) is adjusted.

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

<Step S105>
As shown in FIG. 40, the cut existing superstructure members 110 (existing superstructure members 110X, 110Y, and 110Z) are lifted by a crane 200 placed on the ground and carried out (carrying-out step). However, in FIG. 40, among the parts of the crane 200, only the hooks and the like used for lifting are shown, and the hooks and the like are denoted by reference numeral 200. As shown in FIG.

FIG. 41 shows a state after the cut existing superstructure members 110 (existing superstructure members 110X, 110Y, and 110Z) are carried out from the mounts 10C and 10D and removed.

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

The state after the existing superstructure members 112 and 114 left on the piers 102 and 104 have been carried out and removed (the state after all the existing superstructure members 108 bridging between the piers 102 and 104 have been removed. ) is shown in FIG.

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

(1-6) Superstructure member replacement method according to the first embodiment After carrying out the superstructure member removal method according to the first embodiment, the superstructure member for erecting a new superstructure member 160 in the span 106 A replacement method (a superstructure replacement method according to the first embodiment performed using the superstructure replacement facility 12 according to the first embodiment of the present invention) will be described.

Step S106 is to remove the existing superstructure members 112 and 114 left on the piers 102 and 104, and newly install superstructure members 162 and 164 on the piers 102 and 104 (short lengths to be placed at both ends of the span 106). The step S107 of installing the newly installed superstructure members 162, 164) is not an essential step in the superstructure replacement method according to the present invention, but in superstructure replacement, steps S106 and S107 are also usually performed. Therefore, these steps S106 and S107 are also included in the superstructure 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 state after the removal of the existing superstructure member 108 is completed to the completion of erection of the new superstructure member 160 is divided into steps, referring to FIGS. 43 to 47. explain. 43 to 47 are front views of the states in each of the steps as seen from the direction perpendicular to the bridge axis.

FIG. 43 is a front view showing a state in which new superstructure members 162 and 164 (short new superstructure members 162 and 164 arranged at both ends of the span 106) are newly installed on the piers 102 and 104, Fig. 44 shows the placement of new superstructure members 160X, 160Y, and 160Z constituting the new superstructure member 160 on the bridge axis perpendicular direction member 26 for receiving superstructure members and on the mounts 10C and 10D by a crane (not shown). FIG. 45 is a front view showing a state in which newly installed superstructure members 160X, 160Y, and 160Z are connected by a splicing plate 160A, and a newly installed superstructure member 160 is assembled. FIG. 46 is a front view showing a state in which the new superstructure member 160 is raised by the lifting device 24 and placed at a predetermined height position as the superstructure of the bridge 100, and FIG. 4 is a front view showing a state in which the newly installed superstructure member 160 has been connected to the bridge 100. FIG.

As described above, in the superstructure member replacement method according to the first embodiment, the method up to the removal of the existing superstructure member 108 is the same as the method described in “(1-5) Superstructure member removal method”. Since it is the same, removing the existing superstructure member 108 in the superstructure member replacement method according to the first embodiment will be explained with reference to steps S101 to S106 described in "(1-5) superstructure member removal method". Suppose that it replaces with explanation about each step to.

Therefore, in the following, the superstructure replacement facility 12 is used to start from the state after all the existing superstructure members 108 bridging between the piers 102 and 104 have been removed (the state shown in FIG. 42). The method for replacing the superstructure member according to the first embodiment will be described in steps up to the completion of erection of the new superstructure member 160 (steps S107 to S113).

<Step S107>
After removing the existing superstructure member 108 as shown in FIG. 42, a crane (not shown) placed on the ground 500 or on the bridge 100 is used to install a new superstructure member 162 on the pier 102, A new superstructure member 164 is installed on the bridge pier 104 . FIG. 43 shows the state after the new superstructure members 162 and 164 have been installed on the bridge piers 102 and 104 . As shown in FIG. 43, the new superstructure members 162, 164 are short new superstructure members that are arranged at both ends of the span 106 (see FIG. 1).

<Step S108>
By adjusting the height position of the lifting device 24, the height position of the bridge axis perpendicular direction member 26 for receiving the superstructure member is matched with the height of the pedestals 10C and 10D.

<Step S109>
Newly installed superstructure members 160X, 160Y, and 160Z are placed on the bridge axis perpendicular direction member 26 for receiving the superstructure members and on the mounts 10C and 10D by a crane (not shown) placed on the ground, as shown in FIG. (newly installed superstructure member placing process).

<Step S110>
The newly installed superstructure members 160X, 160Y, and 160Z placed on the bridge axis perpendicular direction member 26 for receiving superstructure members and on the pedestals 10C and 10D are connected by splicing plates 160A as shown in FIG. The superstructure member 160 is assembled.

<Step S111>
The assembled new superstructure member 160 is raised by the lifting device 24, and as shown in FIG.

<Step S112>
A new superstructure member 160 placed at a predetermined height as a superstructure of the bridge 100 is connected to new superstructure members 162 and 164 by splicing plates 160B and 160C, as shown in FIG.

<Step S113>
After connecting the newly installed superstructure member 160 to the newly installed superstructure members 162 and 164 with the splicing plates 160B and 160C, the lifting device 24 is lowered to release the load supporting the newly installed superstructure member 160, Completing the replacement work of the members.

(1-7) Effects of the First Embodiment According to the superstructure member removal equipment, the superstructure member replacement equipment, the superstructure member removal method, and the superstructure member replacement method according to the first embodiment, the bridge piers 102, Since the existing superstructure member 110 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 of the 104, the existing superstructure member 110 can be raised. It is possible to eliminate the need to use heavy equipment that reaches the height position, and also 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 existing superstructure members of viaducts with high ground clearance, efforts will be made to reduce the size of heavy machinery, simplify venting equipment, and improve the efficiency of removal and erection of superstructure members. be able to.

(2) Second embodiment (2-1) Configuration of superstructure member removal equipment according to second embodiment FIGS. 2 is a front view (a front view of the bridge 100 seen from the direction perpendicular to the bridge axis) showing a state in which an existing superstructure member 110 in a span 106 between adjacent piers 102 and 104 of the bridge 100 is being removed. 48 is a front view showing the state before lowering the existing superstructure member 110 to be removed, FIG. 49 is a front view showing the state after lowering the existing superstructure member 110 to be removed, and FIG. FIG. 11 is a front view showing a state immediately before the lowered existing superstructure member 110 is lifted by the crane 200 after being cut and removed. In addition, the existing superstructure member 110 to be removed is separated from the bridge 100 by being cut along the cut surfaces 110A and 110B.

51 to 53 show removal of an existing superstructure member 110 in a span 106 between adjacent piers 102 and 104 of a bridge 100 using superstructure member removal equipment 50 according to the second embodiment of the present invention. 2 is a cross-sectional view (a cross-sectional view taken near the central portion of the bridge 100 in the direction perpendicular to the axis of the bridge 100 on a vertical plane parallel to the axis direction of the bridge 100) showing a state where the bridge 100 is in a state where the bridge 100 is closed. FIG. 51 is a cross-sectional view showing the state before the existing superstructure member 110 to be removed is lowered (the cutting position is the same position as the cutting position indicated by line IV-IV in FIG. 7), and FIG. 52 is the existing upper structure to be removed. FIG. 53 is a cross-sectional view showing the state after lowering the construction member 110 (the cutting position is the same position as the cutting position shown on line VV in FIG. 8), and FIG. FIG. 10 is a cross-sectional view (the cutting position is the same as the cutting position indicated by the line VI-VI in FIG. 9) just before lifting and removing by the crane 200 later;

FIG. 54 is a cross-sectional view showing a cross-section of the lower part of the superstructure removing equipment 50 according to the second embodiment cut along a vertical plane parallel to the bridge axis direction (the cutting position is indicated by line XIII-XIII in FIG. 11). position similar to the cutting position).

FIG. 55 is a front view of the lower part of the superstructure removing equipment 50 according to the second embodiment of the present invention, viewed from the direction perpendicular to the bridge axis of the bridge 100. FIG.

FIG. 56 is a front view (enlarged view of the LVI part of FIG. 48) of the upper part of the superstructure member removing equipment 50 according to the second embodiment of the present invention, viewed from the direction perpendicular to the bridge axis of the bridge 100, and FIG. FIG. 57 is a cross-sectional view taken along line LVII-LVII of FIG. 56;

7 to 10 of the superstructure member removing equipment 10 according to the first embodiment are cross-sectional views of the superstructure member removing equipment 50 according to the second embodiment at similar cutting positions. Since they are the same, the cross-sectional views shown in FIGS. 7 to 10 are also used and referred to in the following description of the superstructure member removing equipment 50 according to the second embodiment.

A side view of the lower part of the superstructure removing equipment 50 according to the second embodiment of the present invention seen from the bridge axis is a side view of the lower part of the superstructure removing equipment 10 according to the first embodiment seen from the bridge axis. 11 and 12, which are side views. Further, the configuration shown in FIG. 14, which is an enlarged view enlarging a part of the lower part of the superstructure member removing equipment 10 according to the first embodiment, is also applied to the superstructure member removing equipment 50 according to the second embodiment. apply. The configuration shown in FIG. 17, which is a side view of the upper part of the superstructure member removing equipment 10 according to the first embodiment viewed from the bridge axis direction of the bridge 100, corresponds to the superstructure member removing equipment 50 according to the second embodiment. The same applies to 11 and 12, the enlarged view shown in FIG. 14, and the side view shown in FIG.

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, but is mounted on the bridge piers 102 and 104 on the opposite side of the span 106 in the bridge axis direction. (A region near the piers 102 and 104 at the ends of the spans 126 and 136 near the piers 102 and 104). In principle, the same reference numerals and names are used for the members and devices corresponding to the members and devices of the superstructure member removing facility 10 according to the first embodiment, and the explanation is basically omitted.

A superstructure member removing facility 50 according to the second embodiment of the present invention comprises a left side facility 50A adjacent to a bridge pier 102, a right side facility 50B adjacent to a bridge pier 104, and two pedestals 10C and 10D. The left side equipment 50A and the right side equipment 50B of the superstructure member removal equipment 50 are arranged facing each other while being separated in the bridge axis direction by a length substantially equal to the length of the existing superstructure member 110 to be removed. The pedestals 10C and 10D are arranged at a position that divides the existing superstructure member 110 to be removed into three equal parts when viewed from the direction perpendicular to the bridge axis, and below the existing superstructure member 110 to be removed.

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

As described above, the superstructure member removing equipment 50 according to the second embodiment of the present invention has the same structure as the superstructure member removing equipment 10 according to the first embodiment, except for the span 106 on the bridge piers 102 and 104. It is also provided on the opposite side of the bridge axis direction (the end of the span 126, 136 near the piers 102, 104 and the area near the piers 102, 104), and both the left side equipment 50A and the right side equipment 50B An opposite side rail holding vertical member 56 is attached to the opposite side connecting member 32 perpendicular to the bridge axis, and an opposite side vertical rail 54 is attached to the opposite side rail holding vertical member 56 . A lifting device 24 is attached to the vertical rail 54 on the opposite side so as to be movable in the vertical direction. On the upper end surface of the rail holding vertical member 56, the remaining portion receiving bridge axis perpendicular member 36 is attached.

A reaction force receiving base portion having the same configuration as the reaction force receiving base portion 40 of the first embodiment is provided below the opposite side rail holding vertical member 56, and is related to the second embodiment. The reaction force receiving base portion 60 of the superstructure member removing equipment 50 is configured by providing the reaction force receiving base portions 40 on both sides in the bridge axis direction of each of the bridge piers 102 and 104 . 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 mounted on the reaction force receiving foundation provided at the end of the span 126, 136 near the piers 102, 104. 40 is supported from below.

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

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

In the superstructure member removal equipment 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 positioned at right angles to the bridge axis. When viewed from the direction, it is provided only within the range of the span 106 between the piers 102 and 104, and in the spans 126 and 136 on the opposite side of the span 106 in the piers 102 and 104 in the bridge axis direction. was not provided, but in the superstructure member removal equipment 50 according to the second embodiment, the bridge piers 102 and 104 are located on the opposite side of the span 106 in the bridge axial direction (the piers 102 and 104 of the spans 126 and 136). In the area near the bridge piers 102 and 104 at the end of the side), there are members directly involved in vertical movement such as the opposite side vertical rail 54, the opposite side rail holding vertical member 56, and the lifting device 24. A device is provided.

In addition, in the superstructure member removing equipment 10 according to the first embodiment, the reaction force receiving foundation 40 composed of the post-placed piles 46 and the like has a span between the piers 102 and 104 when viewed from the direction perpendicular to the bridge axis. 106, but in the reaction force receiving base portion 60 of the superstructure member removal equipment 50 according to the second embodiment of the present invention, the span 106 is not located in the bridge piers 102, 104. On the opposite side of the direction (in the end of the spans 126, 136 near the piers 102, 104 and in the vicinity of the piers 102, 104), a reaction force receiving foundation 40 consisting of a post-placed pile 46 or the like is provided. The reaction force receiving base portion 60 of the superstructure member removing equipment 50 according to the second embodiment is configured such that the reaction force receiving base portions 40 are provided on both sides in the bridge axis direction of 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 for removing the existing superstructure member 110 in the span 106 between the pier 102 and the pier 104, but also for removing the pier 102. , 104 can also be used to remove the existing superstructure members 120, 130 in the spans 126, 136 on the opposite side of the span 106 in the bridge axial direction.

The pier on the other end side of the span 126 (the side opposite to the pier 102 in the span 126) has the same configuration as the equipment for the pier 102 of the superstructure member removing equipment 50 according to the second embodiment. is provided, and on the pier on the other end side of the span 136 (on the side opposite to the pier 104 in the span 136), the facility for the pier 104 of the superstructure member removal equipment 50 according to the second embodiment It is assumed that facilities with the same configuration as

(2-2) Structure of replacement equipment for superstructure members according to the second embodiment A structure similar to that of the replacement facility 12 is placed on the opposite side of the span 106 in the axial direction of the bridge piers 102 and 104 (in the vicinity of the piers 102 and 104 at the ends of the spans 126 and 136 near the piers 102 and 104). It is a replacement facility consisting of a configuration that is also provided. Therefore, the description of the configuration of the superstructure member replacement facility 12 according to the first embodiment of the present invention will replace the description of the configuration of the superstructure member replacement facility according to the second embodiment of the present invention. .

The pier on the other end side of the span 126 (the side opposite to the pier 102 in the span 126) has the same configuration as the pier 102 of the superstructure replacement facility according to the second embodiment. is provided, and on the pier on the other end side of the span 136 (the side opposite to the pier 104 in the span 136), the facility for the pier 104 of the superstructure member replacement facility according to the second embodiment It is assumed that facilities with the same configuration as

(2-3) Construction method of superstructure member removing equipment according to the second embodiment A superstructure member removing equipment 50 according to the second embodiment of the present invention is the same as the superstructure member removing equipment 10 according to the first embodiment. is also provided on the opposite side of the span 106 in the bridge axial direction (the end of the span 126, 136 near the piers 102, 104 and the area near the piers 102, 104). Therefore, the construction method of the superstructure member removing equipment 10 according to the first embodiment is applied to the bridge piers 102 and 104 on the side opposite to the span 106 in the bridge axial direction (ends of the spans 126 and 136 near the piers 102 and 104). By applying this to the areas near the bridge piers 102 and 104 in the second embodiment, the superstructure member removing equipment 50 according to the second embodiment of the present invention can be constructed. Therefore, the explanation of the construction method of the superstructure member removing equipment 10 according to the first embodiment will be substituted for the explanation of the construction method of the superstructure member removal equipment 50 according to the second embodiment of the present invention.

(2-4) Construction method of the superstructure member replacement facility according to the second embodiment The superstructure member replacement facility according to the second embodiment of the present invention is the superstructure member replacement facility 12 according to the first embodiment. A similar configuration is also provided on the bridge piers 102 and 104 on the opposite side of the bridge axis direction from the span 106 (at the end of the span 126 and 136 near the piers 102 and 104 and in the vicinity of the piers 102 and 104). Therefore, the construction method of the superstructure replacement facility 12 according to the first embodiment is applied to the bridge piers 102 and 104 on the opposite side of the bridge axis from the span 106 (the piers 102 and 104 of the spans 126 and 136 By applying this method to the area near the bridge piers 102 and 104 at the end of the side), it is possible to construct the superstructure member replacement facility according to the second embodiment of the present invention. Therefore, the explanation of the construction method of the superstructure member replacement facility 12 according to the first embodiment will replace the explanation 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 according to the second embodiment A superstructure member removal facility 50 according to the second embodiment of the present invention has the same configuration as the superstructure member removal facility 10 according to the first embodiment. , in the bridge piers 102 and 104, the span 106 is also provided on the opposite side of the bridge axis direction (the end of the span 126 and 136 near the piers 102 and 104 and the vicinity of the piers 102 and 104), Not only can it be used to remove the existing superstructure member 110 in the span 106 between the piers 102 and 104, but it can also be used to remove the spans 126 and 136 on the opposite side of the span 106 in the piers 102 and 104 in the bridge axial direction. It is constructed so that it can also be used for removing the existing upper construction members 120 and 130 inside. The removal method for removing the existing superstructure member 110 in the span 106 using the superstructure member removal equipment 50 according to the second embodiment of the present invention is the same as the superstructure member removal method according to the first embodiment. In addition, the 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 in the bridge axis direction is Since the removal method is the same as that for removing the superstructure member 110, the superstructure member removal method according to the second embodiment of the present invention will be explained with the explanation of the superstructure member removal method according to the first embodiment. shall be replaced with

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

(2-6) Method for replacing superstructure members according to the second embodiment The superstructure replacement facility according to the second embodiment of the present invention is similar to the superstructure member replacement facility 12 according to the first embodiment. The structure is also provided on the opposite side of the bridge piers 102 and 104 from the span 106 in the bridge axial direction (the end of the spans 126 and 136 near the piers 102 and 104 and the vicinity of the piers 102 and 104). Therefore, it can be used not only for replacing the existing superstructure member 110 in the span 106 between the piers 102 and 104, but also for the span on the opposite side of the span 106 in the piers 102 and 104 in the bridge axis direction. It is constructed so that it can also be used to replace existing superstructure members 120 and 130 in 126 and 136 . The replacement method for 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. , and the replacement method for replacing the existing superstructure members 120 and 130 in the spans 126 and 136 on the opposite side of the span 106 of the piers 102 and 104 in the bridge axis direction is Since it is the same as the replacement method for replacing the existing superstructure member 110 in the above, the superstructure member according to the second embodiment of the present invention will be described with the explanation of the superstructure member replacement method according to the first embodiment. Instead of explaining the replacement method.

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

(2-7) Effect of the Second Embodiment According to the superstructure member removal equipment 50, the superstructure member replacement equipment, the superstructure member removal method, and the superstructure member replacement method according to the second embodiment, the bridge pier 102 , 104 along the vertical rails 22 in the vertical direction, the existing superstructure member 110 can be removed and replaced. It is possible to eliminate the need to use heavy equipment that reaches the height position, and also 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 existing superstructure members of viaducts with high ground clearance, efforts will be made to reduce the size of heavy machinery, simplify venting equipment, and improve the efficiency of removal and erection of superstructure members. be able to.

Further, according to the superstructure member removal equipment 50, the superstructure member replacement equipment, the superstructure member removal method, and the superstructure member replacement method according to the second embodiment, the span between the pier 102 and the pier 104 In addition to removing and replacing the existing superstructure member 110 in 106, the existing superstructure member 120 in the spans 126 and 136 on the opposite side of the span 106 in the bridge axis direction of the piers 102 and 104, 130 can also be used for removal and replacement.

(3) Third Embodiment (3-1) Configuration of superstructure member removal equipment according to the third embodiment FIG. (A front view of the bridge 100 seen from the direction perpendicular to the axis of the bridge 100, line LVIII in FIG. 60) ), 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 separated from the bridge 100 by being cut along cut surfaces 110A and 110B.

FIG. 59 shows removing the existing superstructure member 110 in the span 106 between the adjacent piers 102 and 104 of the bridge 100 using the superstructure member removal equipment 70 according to the third embodiment of the present invention. 2 is a cross-sectional view showing the situation (a cross-sectional view taken near the central portion of the bridge 100 in the direction perpendicular to the axis of the bridge 100 on a vertical plane parallel to the axis direction of the bridge 100), in which the existing superstructure member 110 to be removed is lowered. FIG. 61 is a cross-sectional view (cross-sectional view taken along line LIX-LIX in FIG. 60) showing the previous state;

FIG. 60 shows removing the existing superstructure member 110 in the span 106 between the adjacent piers 102 and 104 of the bridge 100 using the superstructure member removal equipment 70 according to the third embodiment of the present invention. FIG. 4 is a cross-sectional view showing the situation (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), and a cross-sectional view showing the state before the existing superstructure member 110 to be removed is lowered (Fig. 58 and LX-LX line sectional view of FIG. 59).

FIG. 61 shows removing the existing superstructure member 110 in the span 106 between the adjacent piers 102 and 104 of the bridge 100 using the superstructure member removal equipment 70 according to the third embodiment of the present invention. FIG. 4 is a cross-sectional view showing the situation (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), and a cross-sectional view showing the state before the existing superstructure member 110 to be removed is lowered (Fig. 58 and LXI-LXI line sectional view of FIG. 59). As shown in FIGS. 58 and 59 where the cross-sectional view of FIG. 61 is cut, FIG. 61 is cut along a vertical plane parallel to the direction perpendicular to the bridge axis of the bridge 100 passing through the vicinity of the central portion of the web of the vertical rail 22. It is a sectional view showing a section obtained by doing.

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

FIG. 66 is a front view of the lower part of the superstructure removing equipment 70 according to the third embodiment of the present invention, viewed from the direction perpendicular to the bridge axis of the bridge 100 (view along line LXVI-LXVI in FIG. 62).

The superstructure member removing equipment 70 according to the third embodiment of the present invention replaces the reaction force receiving base portion 60 of the superstructure member removing equipment 50 according to the second embodiment with a reaction force receiving base portion 80 using a laying steel plate 82 . Except for the use of the laying steel plate 82 for the reaction force receiving base portion 80 and the configuration for dealing with it, the configuration of the superstructure member removing facility 70 according to the third embodiment is Since the configuration is the same as that of the superstructure member removing facility 50 according to the second embodiment, the superstructure member removing facility 70 according to the third embodiment of the present invention can be replaced with the superstructure member removing facility 50 according to the second embodiment. In principle, the same reference numerals and names are used for members and devices corresponding to members and devices, and explanations thereof are omitted in principle.

A superstructure member removing facility 70 according to the third embodiment of the present invention comprises a left side facility 70A adjacent to a bridge pier 102, a right side facility 70B adjacent to a bridge pier 104, and two pedestals 10C and 10D. The left side equipment 70A and the right side equipment 70B of the superstructure member removal equipment 70 are arranged facing each other while being separated in the bridge axis direction by a length substantially equal to the length of the existing superstructure member 110 to be removed. The pedestals 10C and 10D are arranged at a position that divides the existing superstructure member 110 to be removed into three equal parts when viewed from the direction perpendicular to the bridge axis, and below the existing superstructure member 110 to be removed.

The left side facility 70A and the right side facility 70B of the superstructure member removing facility 70 have the same configuration. A receiving base 80 is arranged. The main body part 72 has a function of directly supporting the end of the existing superstructure member 110 to be removed and lowering it safely. has the same configuration as the body portion 52 of the superstructure member removing equipment 50 according to the second embodiment. The reaction force receiving base portion 80 is a portion having a function of safely transmitting at least part of the load of the existing superstructure member 110 supported by the main body portion 72 to the ground 500 without passing through the piers 102 and 104 . The superstructure member removal equipment 70 according to the third embodiment is provided with the reaction force receiving base portion 80, so that at least part of the load received by the main body portion 72 when the existing superstructure member 110 to be removed is lowered while supporting it. can be transmitted to the ground 500 without passing through the piers 102, 104. Therefore, even when the existing superstructure member 110 is lowered while supporting it, the load transmitted to the piers 102, 104 can be transferred to the piers 102. , 104 can be within a range where the safety can be ensured.

As described above, the superstructure member removing equipment 70 according to the third embodiment of the present invention uses the laying steel plate 82 for the reaction force receiving base portion 80 . The configuration of the superstructure member removing facility 70 according to the third embodiment is the same as that of the second Since the configuration is the same as that of the superstructure member removing equipment 50 according to the embodiment, the configuration of the reaction force receiving base portion 80 will be described below.

The reaction force receiving base portion 80 has a laying steel plate 82 , a sandal 84 and a receiving beam 86 .

The laying steel plate 82 is a steel plate that is placed below the main body portion 72 (the rail holding vertical member 28) and laid on the ground 500, and has a thickness of about 22 to 25 mm. Most of the vertically downward load applied to the body portion 72 of the superstructure member removing equipment 70 is transmitted from the laying steel plate 82 to the ground 500 . Sands 84 are arranged on the laying steel plate 82 at appropriate intervals, and a support beam 86 is arranged on the sand 84. The support beam 86 holds the rail of the main body portion 72 of the superstructure member removal equipment 70. It is connected to the lower end surface of the up-down direction member 28 .

The sandals 84 are members placed on the laying steel plate 82 and fill the space between the supporting beams 86 and the laying steel plates 82 . It has a role of transmitting the received load to the laying steel plate 82 . The shape and arrangement interval of the sandals to be arranged are determined according to the load assumed to be received by the receiving beams 86 from the main body portion 72 . In the third embodiment, the sand 84 is made by assembling H steels in a parallel cross shape and stacking them together. The material and shape are not particularly limited as long as they are present.

The receiving beam 86 is a member arranged at the top of the reaction force receiving base portion 80, is arranged below the vertical rail holding member 28, and is connected to the lower end surface of the vertical rail holding member 28. there is Most of the vertically downward load received by the body portion 72 of the superstructure member removing equipment 70 is transmitted from the rail holding vertical members 28 of the body portion 72 to the receiving beams 86 .

The receiving beam 86 is a member that directly receives most of the vertically downward load received by the body portion 72 of the superstructure member removing facility 70 according to the third embodiment of the present invention. It is transmitted to the laying steel plate 82 via and transmitted to the ground 500 . The length of the receiving beam 86 is about the same length as the connecting member 30 in the direction perpendicular to the bridge axis.

In the third embodiment, the supporting beam 86 is made of H steel to which reinforcing plates are welded at appropriate intervals in the length direction. and are connected to the sandals 84 and the rail holding vertical members 28 by bolt joints.

The reaction force receiving base portion 80 of the third embodiment has a simpler configuration than the reaction force receiving base portions 40 and 60 of the first and second embodiments, and is inexpensive in terms of cost. However, since the reaction force receiving base portion 80 of the third embodiment may be inferior in load bearing capacity to the reaction force receiving base portions 40 and 60 of the first and second embodiments, this point should be considered. pay attention to.

(3-2) Structure of superstructure member replacement equipment according to the third embodiment The superstructure member removal equipment 70 according to the third embodiment of the present invention lowers the existing superstructure member 110 to be removed while supporting it. However, the superstructure replacement equipment (not shown) according to the third embodiment of the present invention also has the ability to support and raise the new bridge girder to be erected. 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 accommodated by adjusting the output and number of the lifting devices 24 and the cross-sectional performance and number of the vertical rails 22 and rail holding vertical members 28 .

Therefore, 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 explanation of the configuration of the superstructure member removing facility 70 according to the third embodiment will be used instead of the explanation of the configuration of the superstructure member replacement facility according to the third embodiment of the present invention.

(3-3) Construction method of superstructure member removing equipment according to the third embodiment As described above, the superstructure member removing equipment 70 according to the third embodiment of the present invention uses the superstructure member removal equipment according to the second embodiment. This 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 laying steel plate 82, and the use of the laying steel plate 82 in the reaction force receiving base portion 80, and correspondence thereto. The configuration of the superstructure member removing facility 70 according to the third embodiment is the same as the configuration of the superstructure member removing facility 50 according to the second embodiment, except for the configuration for In the explanation of the method of constructing the superstructure member removing equipment 70, the method of constructing the reaction force receiving base portion 80 will be mainly described. The description of the construction method of the main body portion 72 of the superstructure member removing equipment 70 according to the third embodiment includes the description of the construction method of the main structure portion 20 of the superstructure member removing equipment 10 according to the first embodiment and the second embodiment. A description of a construction method of the main body portion 52 of the superstructure member removing equipment 50 according to the embodiment will be substituted.

Hereinafter, a method for constructing the superstructure member removing equipment 70 according to the third embodiment will be described in steps, focusing on a method for constructing the reaction force receiving base portion 80 .

<Step S31>
When constructing the main body 72 of the superstructure member removing equipment 70 according to the third embodiment, the position of the ground 500 corresponding to the position of both ends of the existing superstructure member 110 to be removed A laying steel plate 82 is laid on the ground 500 centering on the position of the ground 500 vertically below both ends of the existing superstructure member 110 in the bridge axis direction. The laying steel plate 82 is laid in a sufficiently wide range so that the sandals 84 arranged on the laying steel plate 82 do not protrude outside the laying steel plate 82.例文帳に追加

<Step S32>
A sandal 84 is placed on the laying steel plate 82 vertically below the rail holding vertical member 28 . The sandals 84 are adjusted to an appropriate height using an adjustment plate or the like.

<Step S33>
A support beam 86 is placed on a sand 84 placed on a laying steel plate 82, and the support beam 86 is connected to the sand 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 support beam 86, and the rail The vertical holding member 28 is connected to the receiving beam 86 with bolts, and the vertical rail holding member 28 is connected to the connecting member 30 perpendicular to the bridge axis with bolts, so that the vertical rail 22 of the first stage and the rail are held. A vertical member 28 is installed.

The subsequent steps are the same as steps S12 to S15 described in "(1-3) Method for constructing superstructure member removing equipment according to first embodiment".

In the piers 102 and 104, the structure provided on the opposite side of the bridge axis from the span 106 (the end of the spans 126 and 136 near the piers 102 and 104 and the vicinity of the piers 102 and 104) should be constructed in the same manner. can be done.

(3-4) Construction method of superstructure member replacement facility according to the third embodiment As described above in "(3-2) Configuration of superstructure member replacement facility according to the third embodiment", the 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 explanation of the method of constructing the superstructure member removal equipment 70 according to the third embodiment of the present invention described in the section "Construction method of the superstructure member removal facility according to the embodiment", the superstructure structure according to the third embodiment of the present invention will be described. The explanation will be replaced with the construction method of the member replacement facility.

(3-5) Superstructure member removal method according to the third embodiment As described above, the superstructure member removal facility 70 according to the third embodiment of the present invention is similar to the superstructure member removal facility 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 use of the laying steel plate 82 for the reaction force receiving base portion 80 and Except for the configuration, the configuration of the superstructure member removing facility 70 according to the third embodiment is the same as the configuration of the superstructure member removing facility 50 according to the second embodiment. The method for removing the construction member is the same as the method for removing the upper construction member according to the second embodiment. Therefore, the description of the superstructure member removing method according to the second embodiment will replace the description of the superstructure member removing method according to the third embodiment of the present invention.

(3-6) Method for replacing superstructure members according to the third embodiment As described above, the system for replacing superstructure members according to the third embodiment of the present invention replaces superstructure members according to the second embodiment. This is an embodiment in which the reaction force receiving base portion 60 of the equipment is changed to a reaction force receiving base portion 80 using a laying steel plate 82, and the use of the laying steel plate 82 for the reaction force receiving base portion 80, and to cope with it Except for the configuration of , the configuration of the upper construction member replacement facility according to the third embodiment is the same as the configuration of the upper construction member replacement facility according to the second embodiment. The superstructure member replacement method is the same as the superstructure member replacement method according to the second embodiment. Therefore, the description of the method for replacing the superstructure according to the second embodiment will be used instead of the description of the method for replacing the superstructure according to the third embodiment of the present invention.

(3-7) Effects of the Third Embodiment According to the superstructure member removal facility 70, the superstructure member replacement facility, the superstructure member removal method, and the superstructure member replacement method according to the third embodiment, the bridge pier 102 , 104 along the vertical rails 22 in the vertical direction, the existing superstructure member 110 can be removed and replaced. It is possible to eliminate the need to use heavy equipment that reaches the height position, and also 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 existing superstructure members of viaducts with high ground clearance, efforts will be made to reduce the size of heavy machinery, simplify venting equipment, and improve the efficiency of removal and erection of superstructure members. be able to.

Further, according to the superstructure member removal equipment 70, the superstructure member replacement equipment, the superstructure member removal method, and the superstructure member replacement method according to the third embodiment, the span between the piers 102 and 104 In addition to removing and replacing the existing superstructure member 110 in 106, the existing superstructure member 120 in the spans 126 and 136 on the opposite side of the span 106 in the bridge axis direction of the piers 102 and 104, 130 can also be used for removal and replacement.

In addition, the reaction force receiving base portion 80 of the third embodiment has a simpler configuration and is less expensive than the reaction force receiving base portions 40 and 60 of the first and second embodiments. However, the reaction force receiving base portion 80 of the third embodiment may be inferior in load bearing capacity to the reaction force receiving base portion 40 of the first embodiment and the reaction force receiving base portion 60 of the second embodiment. So keep this in mind.

(4) Modified example of removal method of existing superstructure members 112 and 114 left on piers In the method for removing superstructure members of the first to third embodiments, existing superstructure members 112 and 112 left on piers 102 and 104, 114 was lifted by a crane (not shown) placed on the ground 500 or on the bridge 100, carried out, and removed. case is also assumed.

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

Specifically, steps S201 to S208 below can be performed. 67 to 73 will be referred to in the description of steps S201 to S208 below. In FIG. FIG. 68 is a front view (viewed from a direction perpendicular to the bridge axis) schematically showing a state in which the rail equipment 602 is provided at a predetermined position, and FIG. 110 is lowered to connect and integrate the rail equipment 600 and the rail equipment 602, and then the existing superstructure members 112 and 114 are mounted on the chill tank 610 on the rail equipment 600. FIG. 69 is an enlarged view of the LXIX part of FIG. 68, and FIG. 71 is a front view (viewed from the direction perpendicular to the bridge axis) schematically showing a state in which the existing superstructure members 112 and 114 have been pulled in and fixed onto the existing superstructure member 110, and FIG. 72 is a front view (viewed from the direction perpendicular to the bridge axis) schematically showing a state in which the existing superstructure member 110 is lowered and placed on the mounts 10C and 10D, and FIG. 72 is the existing superstructure member to be removed. FIG. 73 is a front view (viewed from the direction perpendicular to the bridge axis) schematically showing a state in which 110 is cut on mounts 10C and 10D, and FIG. 73 shows existing superstructure member 110 (110X , 110Y, 110Z) and the existing superstructures 112, 114 are lifted up by the crane 200 and removed (viewed from the direction perpendicular to the bridge axis). However, the drawings schematically show only the states of major steps, and one drawing may be used to describe a plurality of steps.

In the following description of steps S201 to S208, when removing the existing superstructure members 112 and 114 left on the bridge piers 102 and 104, the rail equipment 600 and 602 is used. A modified example of the method will be taken up and explained.

<Step S201>
Rail equipment 600 is installed on the bridge piers 102 and 104 at positions below the main girders of both ends of the existing superstructure member 108 (portions of the existing superstructure member 108 corresponding to the existing superstructure members 112 and 114, respectively). In addition to being provided in the direction of the bridge axis, the rail equipment 600 is also provided on parts other than both ends of the existing superstructure member 108 (parts of the existing superstructure member 108 that correspond to both ends of the existing superstructure member 110). At the corresponding position, rail equipment 602 is installed in the direction of the bridge axis. When viewed from above, the rail equipment 600 and the rail equipment 602 are in a positional relationship such that they form a straight line. In the method for removing superstructure members of the first to third embodiments, the existing superstructure members to be removed have three main girders, so 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 superstructure member 108 is cut along cut surfaces 110A and 110B to cut into existing superstructure members 110, 112 and 114. FIG. Then, the existing superstructure member 110 is lowered to a position where the rail equipment 600 and the rail equipment 602 can be connected (see FIGS. 68 and 69).

<Step S203>
The rail equipment 600 and the rail equipment 602 are connected and integrated 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 a chill tank 610 installed on the rail equipment 600 (see FIGS. 68 and 69). It should be noted that the chill tank 610 may be replaced with any roller carriage that has a predetermined function.

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

<Step S206>
After the integrated rail equipment 600 and rail equipment 602 are dismantled and separated in step S203, the existing superstructure member 110 is lowered by the superstructure member removal equipment 10 and placed on the mounts 10C and 10D (FIG. 71). reference).

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

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

(5) Modification of method for installing new superstructure members 162 and 164 on piers In the method for replacing superstructure members of the first to third embodiments, new superstructure members 162 and 164 are installed on piers 102 and 104. At the time of installation, a crane (not shown) placed on the ground 500 or on the bridge 100 was used to lift and install, but it is assumed that the crane cannot be used due to obstacles or interfering objects. .

In such a case, the newly installed superstructure members 162 and 164 are temporarily placed and fixed on the newly installed superstructure member 160, and the newly constructed superstructure members 162 and 164 are placed together with the newly constructed superstructure member 160 at a predetermined height. After being raised to the position, the new superstructure members 162 and 164 may be moved in the bridge axis direction to predetermined positions on the bridge piers 102 and 104 using the rail equipment 600 and 602 and installed.

Specifically, it can be performed as in steps S301 to S306 below. 74 and 75 will be referred to in the description of steps S301 to S306 below. In FIG. A front view (viewed from a direction perpendicular to the bridge axis) schematically showing a state in which a rail facility 602 is provided at a predetermined position, and newly installed superstructure members 162 and 164 are mounted and fixed to a chill tank 610 on the rail facility 602. FIG. 75 is a front view schematically showing a state in which the rail equipment 600 and the rail equipment 602 are connected after the newly installed superstructure member 160 is raised to a predetermined height position (as seen from the direction perpendicular to the bridge axis). Figure). However, the drawings schematically show only the states of major steps, and one drawing may be used to describe a plurality of steps.

In the following description of steps S301 to S306, when new superstructure members 162 and 164 are newly installed on bridge piers 102 and 104, the case where rail equipment 600 and 602 are used will be described as superstructure member suspension of the first embodiment. A modified example of the replacement method will be taken up and explained.

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

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

<Step S302>
The newly installed 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 equipment 600 and the rail equipment 602 are connected and integrated with bolts (not shown) (see FIG. 75).

<Step S304>
After releasing the fixation of the new superstructure members 162 and 164 fixed on the new superstructure members 160, the new superstructure members 162 and 164 are placed on the piers 102 and 104 by a drawing device such as a chill hole (not shown). to the installation position.

<Step S305>
The newly pulled superstructure members 162 and 164 are jacked up and installed on the bearings (fulcrums 102A and 104A) of the bridge piers 102 and 104 .

<Step S306>
After completing the installation of the new superstructure members 162 and 164 on the bearings (fulcrums 102A and 104A) of the piers 102 and 104, the rail equipment 600 and the rail equipment 602 that have been connected and integrated are dismantled and separated. After that, the new superstructure member 160 is raised to the regular installation height position by the superstructure replacement equipment 12, and the new superstructure member 162 installed on the bearings (fulcrums 102A, 104A) of the bridge piers 102, 104, 164, the newly installed superstructure member 160 is connected with splicing plates 160B and 160C (see FIG. 47).

10, 50, 70 Upper work member removal equipment 10A, 50A, 70A Left equipment 10B, 50B, 70B Right equipment 10C, 10D Frame 12 Upper work member replacement equipment 20, 52, 72 Main body 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 axis perpendicular direction member for superstructure member receiving 28... Rail holding vertical direction member 30... Bridge axis perpendicular direction connecting member 32... Opposite side bridge axis perpendicular direction connecting member 34... Bridge axis direction connecting member 36... Bridge for receiving remaining part Axis-perpendicular direction members 40, 60, 80 Reaction force receiving foundation 42 Footing upper surface fixed stand 44 Height adjustment stand 46 Post-strike pile 48 Receiving beam 54 Opposite side vertical rail 56 Opposite side rail holding Vertical member 82 Laying steel plate 84 Sand 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... Footings 160, 160X, 160Y, 160Z, 162, 164... New superstructure members 160A, 160B, 160C... Splicing plate 200, 202, 204... Crane 220... Aerial work vehicle 250... Vibro hammer 500... Ground 600, 602... Rail equipment 610... Chill tank

Claims (14)

A superstructure member transport facility capable of vertically transporting superstructure members within a span between piers adjacent in the axial direction of a bridge,
a vertical member extending vertically adjacent to each of the bridge piers adjacent in the bridge axis direction of the bridge and positioned within the span when viewed from the direction perpendicular to the bridge axis of the bridge;
a lifting device;
with
The vertical member includes a vertical rail portion having a lower end at a portion above the ground,
The lifting device is attached to the vertical rail portion and configured to be movable along the vertical rail portion,
The number of lifting devices capable of supporting and vertically transporting the superstructure members is provided, and the vertical members absorb at least part of the vertically downward load received by the vertical members . A superstructure member transportation facility characterized in that it is configured to transmit to the ground without passing through. 2. The superstructure member transportation facility according to claim 1 , wherein the vertical member is attached to each of the bridge piers . The load transmitted to the pier, which is a part of the vertically downward load received by the vertical members attached to each of the piers, is the load transmitted within the range in which the safety of the pier is ensured. 3. The superstructure material handling facility according to claim 2 , characterized in that : The elevating device includes an extendable jack and a clamp device attached to each end of the jack, and is attached to the vertical rail portion by the clamp device. 4. The superstructure member transportation equipment according to any one of claims 1 to 3, characterized in that fixing to the directional rail portion and release of the fixation can be repeatedly performed. 5. The superstructure member transportation according to any one of claims 1 to 4, further comprising a bridge-axis-perpendicular-direction connecting member that bridges and connects between the vertical members in a direction perpendicular to the bridge axis of the bridge. Facility. In the bridge pier, on the opposite side of the bridge in the bridge axis direction from the span, an opposite side connecting member extending in the direction perpendicular to the bridge axis is arranged, and on the side of the pier in the direction perpendicular to the bridge axis An axial direction connecting member extending in the direction of the bridge axis is arranged, and the transverse direction connecting member, the opposite side transverse direction connecting member and the axial direction connecting member wrap around the bridge pier once. 6. The superstructure member carrying equipment according to claim 5, wherein the superstructure member conveying equipment is attached to the bridge pier as a pier. Furthermore, in each of the piers, an opposite side vertical member extending in the vertical direction is attached also on the opposite side of the bridge in the axial direction of the bridge from the span, and each of the opposite side vertical members is attached to the opposite side 7. The superstructure member transportation facility according to claim 6, further comprising a lifting device capable of moving along the vertical member . 8. The system according to any one of claims 1 to 7, wherein a base for mounting the superstructure is provided below the superstructure, and the height of the base is 1 m or more and 3 m or less from the ground surface. The upper construction member transportation equipment according to . A superstructure member transporting method for vertically transporting superstructure members within a span between piers adjacent in the axial direction of a bridge,
a supporting step of supporting the superstructure member by the superstructure member transportation facility according to any one of claims 1 to 8;
a transporting step of vertically transporting the superstructure member supported by the superstructure member transporting equipment, using the superstructure member transporting equipment;
A superstructure member carrying method, comprising: 10. The method for transporting superstructure members according to claim 9, wherein in the supporting step, the existing superstructure members in a predetermined area within the span are supported by the superstructure member transport equipment,
a separating step of separating the existing superstructure members in the predetermined area supported by the superstructure member transport equipment from the bridge;
A method for transporting superstructure members, wherein the transporting step is a lowering step of lowering the existing superstructure members separated in the separating step by the superstructure member transporting equipment. a carry-out step of carrying out the existing superstructure members lowered in the lowering step from the superstructure member transportation facility;
After the carry-out step, a new superstructure member placement step of placing the new superstructure member on the superstructure member transportation facility;
a raising step of raising the new superstructure placed on the superstructure transporting equipment in the new superstructure placing step, with the superstructure transporting equipment;
A connecting step of connecting the new superstructure members raised in the raising step to the bridge;
11. The method of conveying superstructure members according to claim 10, comprising: The upper construction member transportation facility is the upper construction member transportation facility according to claim 8,
10. The lowering step is a lowering and mounting step of lowering the existing superstructure separated in the separating step by the superstructure transporting equipment and mounting the existing superstructure on the pedestal. 12. The method for transporting superstructure members according to 11. 13. The method of transporting superstructure members according to claim 12, wherein the existing superstructure members placed on the mount in the step of lowering and placing are carried out after being dismantled. The upper construction member transportation facility is the upper construction member transportation facility according to claim 8,
12. The method for transporting superstructure members according to claim 11, wherein in the step of placing the new superstructure members, the new superstructure members are assembled on the base and placed on the superstructure member transport equipment.

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