JP6271801B1 - Road bridge inspection deck and road bridge inspection deck construction method - Google Patents

Abstract

An object of the present invention is to provide a permanent road bridge inspection deck having structural stability and a construction method for the road bridge inspection deck. A plurality of first rails (10, 10) supported by a plurality of bridge piers (P1, P2) arranged in the bridge axis direction and attached to a plurality of main girders (B1, B1) arranged in a direction perpendicular to the bridge axis; A first movable panel body 40 including a wheel unit 20 including a plurality of wheels 21 and 21 that can freely travel on each first rail 10 and a scaffold panel 30 supported by the wheel unit 20. A plurality of scaffold panels 30 are in contact with each other, and are arranged in the bridge axis direction below the main girder B1 to block the main girder B1 from the lower space US, and at least one end of the pier P2 side. The first movable panel body 40A in the section is fixed to at least one of the first rail 10, the main beam B1, or the horizontal beam B2 that connects the main beams B1. [Selection] Figure 3

Description

  The present invention relates to a road bridge inspection deck and a construction method of the road bridge inspection deck.

  There are approximately 700,000 road bridges nationwide, and there are approximately 10,000 road tunnels. For example, when it comes to road bridges, over the next few years, more than 40% of bridges will be over 50 years old after construction. There is also a trial calculation result. Based on this situation, the Road Act was revised in 2013, and the Infrastructure Life Extension Plan was formulated by the Ministry of Land, Infrastructure, Transport and Tourism. In this, what road managers should do is clearly obligatory, and standards for inspections and diagnoses based on the Road Law are stipulated. Regarding inspections of bridges and tunnels, etc., in accordance with the uniform standards established by the government, bridges with a length of 2.0m or more, elevated roads, etc. ”) Is required to conduct 100% monitoring by proximity visual inspection once every five years.

  A road bridge is composed of a plurality of piers or abutments arranged at intervals in the bridge axis direction, a plurality of main girders supported by these piers and the like and arranged in a direction perpendicular to the bridge axis, and the plurality of main girders. And a supported floor slab. In the inspection of the road bridge, the condition of the underside of the floor slab (presence / absence of cracks, crack width and length, presence / absence of free lime, etc.) and main girder conditions (presence / absence of rust, corrosion, etc.) Done carefully. Since the inspection once every five years is frequent, it is not a good idea to temporarily install an inspection deck under the main girder for each inspection and remove it after the inspection due to increased installation and removal costs. For this reason, road corporations are currently moving in the direction of installing a check deck as a permanent deck under the main girder of the road bridge.

  As a method of forming the work scaffold, a plurality of rails are attached to the back of the girder and suspended, and the fitting portions near both ends of the walkway panel are fitted into the slide grooves of the rail, and the walkway panel is moved along the rail. There has been proposed a method of forming a work scaffold by connecting a plurality of gallery panels with a connecting means while sliding them (see, for example, Patent Document 1).

JP 2007-186947 A

  However, the working scaffold formed by the forming method described in Patent Document 1 is not supposed to be formed as a permanent deck, although there is no clear description thereof. Whether or not is fixed is unclear and there is a risk of lack of structural stability as a permanent deck.

  This invention is made | formed in view of the said subject, and it aims at providing the construction method of the permanent road bridge inspection deck with the structural stability, and such a road bridge inspection deck.

In order to achieve the above object, one aspect of the road bridge inspection deck according to the present invention is supported by a plurality of bridge piers arranged in the bridge axis direction and attached to a plurality of main girders arranged in a direction perpendicular to the bridge axis. A plurality of first rails;
A first movable panel body comprising a wheel unit composed of a plurality of wheels that can run freely on each of the first rails, and a scaffold panel supported by the wheel unit;
A plurality of the scaffold panels abut against each other, and the main girder is cut off from the lower space side by side in the bridge axis direction below the main girder;
The first movable panel body at at least one pier side end is fixed to at least one of the first rail, the main girder, or a horizontal girder connecting the plurality of main girders. It is characterized by that.

  According to this aspect, the first rail is attached to the main girder, and the plurality of scaffold panels supported by the wheels on the first rail are in contact with each other to form the road bridge inspection deck, The first movable panel body at one end of the pier side is fixed to the first rail, main girder, or cross girder. Therefore, the inspector can freely move on the scaffold panel having the structural stability to perform the close visual inspection of the floor slab and the main girder. In addition, by blocking the main girder from the lower space (the space below the scaffold panel) with a plurality of scaffold panels, the corrosion resistance and corrosion resistance of the main girder and the bottom of the slab can be improved. Durability can be improved. Further, by blocking the main girder from the lower space with a plurality of scaffold panels, traffic noise on the road bridge can be shielded with the scaffold panels. Therefore, when the space below the road bridge is included in a noise regulation area from the road bridge, the scaffold panel can also be used as a soundproof panel, and an effect as an inspection deck and soundproof deck can be achieved. In the present specification, “bridge pier” includes not only a literal pier but also an abutment.

  Another aspect of the road bridge inspection deck according to the present invention is characterized in that the first movable panel body at the ends of both bridge piers is fixed to the first rail.

  According to this aspect, since the first movable panel bodies at both ends of both piers forming the road bridge inspection deck are fixed to the first rail, the movement of the road bridge inspection deck is further enhanced. It is restrained and can be installed permanently between the piers of the road bridge.

  Another aspect of the road bridge inspection deck according to the present invention is characterized in that all the first movable panel bodies are fixed to the first rail.

  According to this aspect, since all the first movable panel bodies forming the road bridge inspection deck are fixed to the first rail, the movement of the road bridge inspection deck is further suppressed, and the road bridge is stably provided. Can be permanently installed between the piers.

  Another aspect of the road bridge inspection deck according to the present invention is characterized in that the end portions of the two scaffold panels contacting each other are engaged with each other.

  According to this aspect, the end portions of the adjacent scaffold panels are engaged with each other, so that the structural stability of the road bridge inspection deck can be further improved, and the barrier between the main girder and the lower space is further improved. be able to. In addition, in a form in which only the first movable panel body at one end of the pier side is fixed to the first rail and the other first movable panel body is not fixed to the first rail, the adjacent scaffold panels are Since they are engaged with each other, the remaining first movable panel body other than the first movable panel body at the pier side end is indirectly fixed to the first rail.

  Another aspect of the road bridge inspection deck according to the present invention is characterized in that the two scaffold panels that are in contact with each other are fixed by a fixture.

  According to this aspect, the structural stability of the road bridge inspection deck can be further enhanced by fixing the ends of the adjacent scaffold panels with the fixture. Examples of the fixture include bolts and clamps. In addition, the structural stability of a road bridge inspection deck can be further improved by fixing with the fixing tool in the state which the edge parts of the adjacent scaffold panel were engaged.

In another aspect of the road bridge inspection deck according to the present invention, each of the main girders at the left and right ends in the direction perpendicular to the bridge axis further includes a second rail,
A second movable panel body comprising a wheel capable of traveling on each of the second rails, and a side panel supported by the wheel,
A plurality of the side panels abutting each other, blocking the main girder from the outer side space in a bridge axis direction outside the main girder;
The second movable panel body at at least one pier side end is fixed to the second rail;
The scaffold panel and the side panel block the plurality of main girders from an external space.

  According to this aspect, the plurality of main girders forming the road bridge are surrounded by the lower plurality of scaffold panels and the left and right outer side panels, whereby the corrosion resistance of the main girders and the floor slab lower surface In addition, the anti-corrosion property can be further enhanced, and the traffic noise shielding performance on the road bridge can be further enhanced.

Further, in another aspect of the road bridge inspection deck according to the present invention, there is a gap between the pier and the first movable panel body at the pier side end,
It further has an expansion / contraction member that closes the gap across the pier and the first movable panel body at the pier side end.

  According to this aspect, even when the main girder is subjected to temperature expansion / contraction, it is possible to cope with the temperature expansion / contraction of the main girder by the expansion / contraction action of the expansion / contraction member straddling between the pier and the first movable panel body. Therefore, for example, when the first movable panel body at the end of the pier side is fixed to the top end of the pier, etc., when the main girder expands and contracts in temperature, the first movable panel body cannot cope and the scaffold panel is damaged. Such a problem does not occur. For example, in the form in which the main girder is supported by the abutment, there is a step at the top of the abutment, so that the abutment and the second movement in addition to the elastic member straddling the gap between the abutment and the first movable panel body A telescopic member straddling the gap between the panel members can also be attached.

Further, in another aspect of the road bridge inspection deck according to the present invention, a plurality of cross beams connecting the plurality of main girders provided side by side in the direction perpendicular to the bridge axis are arranged in the bridge axis direction,
Wire penetrations are attached to the cross beam and the scaffold panel, respectively.
An endless wire extending between the two piers penetrates the plurality of wire penetration portions of the cross beam and the scaffold panel.

  According to this aspect, since the endless wires pass through the wire penetrating portions of both the cross beam and the scaffold panel, some of the scaffold panels are temporarily not adjacent to the first rail and are adjacent to each other. Even when the engaged state with the scaffold panel is released, the scaffold panel can be prevented from falling.

Further, according to one aspect of the construction method of the road bridge inspection deck according to the present invention, the first rail is provided to each of the plurality of main girders which are supported by a plurality of piers arranged in the direction of the bridge axis and provided in a direction perpendicular to the bridge axis. The first installation step to attach,
A first movable panel body comprising a plurality of wheels and a scaffold panel supported from the wheels is attached to each of the first rail corresponding to the first rail on one pier side, and the other A first fixing step of transferring the first movable panel body to the pier side and fixing it to the first rail;
The other first movable panel body is sequentially transferred from the one pier side to the other pier side, and the adjacent scaffold panels are brought into contact with each other without any gap to construct a road bridge inspection deck, and the scaffold And a first construction step of blocking the main girder from the lower space by a panel.

  According to this aspect, the road bridge inspection deck is efficiently moved by moving the wheels along the first rail attached to the main girder and sequentially bringing the scaffold panels into contact with each other. And it can be constructed stably. By fixing the first movable panel body at the end of the other pier side where the scaffolding panel is sent out to the first pier side to the first rail, the first movable panel body to be sequentially transferred is preceded by It abuts on the transferred first movable panel body and is positioned at a predetermined position.

  Further, according to another aspect of the construction method of the road bridge inspection deck according to the present invention, the first movable panel body at the end on the one bridge pier side which is finally attached to the first rail is also the first. It is fixed to a rail.

  According to this aspect, the first movable panel body at both ends of the both piers forming the road bridge inspection deck is fixed to the first rail, whereby the first rail of each first movable panel body. Therefore, a stable road bridge inspection deck can be permanently installed between the piers of the road bridge.

  Another aspect of the construction method of the road bridge inspection deck according to the present invention is characterized in that all the first movable panel bodies are fixed to the first rail at the transferred position.

  According to this aspect, by fixing all the first movable panel bodies to the first rail, the movement of all the first movable panel bodies relative to the first rail is further suppressed, and a stable road bridge inspection deck is provided. Can be permanently installed between the piers of the road bridge.

  In another aspect of the construction method of the road bridge inspection deck according to the present invention, the end of the scaffold panel to be transferred next is engaged with the end of the scaffold panel that has been transferred in advance. It is characterized by going.

  According to this aspect, by positioning the end of the scaffold panel that has been transferred next to the end of the already-positioned scaffold panel, the scaffold panels are positioned in a posture that does not move relative to each other. Can do.

Further, in another aspect of the construction method of the road bridge inspection deck according to the present invention, a plurality of cross beams connecting the plurality of main girders provided side by side in the direction perpendicular to the bridge axis are arranged in the bridge axis direction.
A wire penetration part is attached to each of the cross beam and the scaffold panel,
An endless wire extending between the two piers is formed by penetrating the wire through the wire penetrating portion, and when the first movable panel body is transferred, the scaffold panel is placed at an intermediate position of the wire. The first movable panel body is transferred by fixing and pulling the endless wire.

  According to this aspect, the first movable panel body is moved to the other abutment side while pulling the endless wire penetrating the wire penetration part of the cross beam and the scaffold panel from the one abutment side. The transfer of the one movable panel body can be easily performed. In addition, after the transfer of all the first mobile panel bodies has been completed and the road bridge inspection deck has been constructed, by leaving the endless wire, this wire can be used as a means for preventing the scaffold panels from falling off. There is an effect.

Moreover, the other aspect of the construction method of the road bridge inspection deck according to the present invention further includes a second installation step of attaching a second rail outside the main girder at the left and right ends in the direction perpendicular to the bridge axis,
The wheel of a second movable panel body comprising a wheel and a side panel supported by the wheel is movably attached to the second rail on one pier side, and the first on the other pier side. A second fixing step of transferring and fixing the two movable panel bodies to the second rail;
The other second movable panel body is sequentially transferred from the one abutment side to the other abutment side, and the adjacent side panels are brought into contact with each other without a gap, and the scaffold panel and the side panel are brought into contact with each other. And a second construction step of shutting off the plurality of main girders from the external space.

  According to this aspect, for example, while moving the wheel along the second rail attached to the side surface of the web of the main girder, the side panels supported by the wheel are transferred, and the side panels sequentially transferred are moved to each other. By making contact, the second movable panel body can be constructed efficiently and stably. In addition, by installing multiple scaffold panels and side panels around the main girder, the corrosion resistance and corrosion resistance of the main girder and floor slab lower surface can be further improved, and traffic noise shielding performance on the road bridge is further enhanced. Can be increased.

  In another aspect of the construction method of the road bridge inspection deck according to the present invention, a gap is provided between both of the piers and the first movable panel body at each end portion of the pier, The method further includes an attaching step of attaching an expansion / contraction member that closes the gap across the first movable panel body at the pier side end.

  According to this aspect, it is possible to construct a road bridge inspection deck that can follow the temperature expansion and contraction of the main girder. For example, in the form in which the main girder is supported by the abutment, in the attachment process, in addition to attaching the elastic member straddling the gap between the abutment and the first movable panel body, the abutment and the second movable panel body A separate elastic member can be attached across the gap.

Further, according to another aspect of the construction method of the road bridge inspection deck according to the present invention, in the first installation step, a third rail extending in the vertical direction from the foot of the one pier to the top is attached to the side surface of the pier, The third rail extending in the vertical direction and the first rail attached to the main girder are continuous,
In the first fixing step, the scaffold panel is transferred to the other pier side along the third rail and the first rail continuous from the foot of the pier, and the end portion on the other pier side is Fixing the first movable panel body to the first rail;
In the first construction step, the other first movable panel body is sequentially transferred from the foot of the one pier to the other pier side.

  According to this aspect, while the scaffold panel is sequentially transported along the third rail and the first rail from the foot of one pier (the ground) without transporting the scaffold panel to the top of the pier with a crane or the like, the road Bridge inspection deck can be constructed.

  As can be understood from the above description, according to the road bridge inspection deck and its construction method of the present invention, a permanent road bridge inspection deck having structural stability can be provided.

It is a side view showing an example of a road bridge inspection deck concerning a 1st embodiment with a road bridge. It is the II-II arrow line view of FIG. 1, and is sectional drawing which cut | disconnected the road bridge in the orthogonal direction of the bridge axis. It is the III-III arrow line view of FIG. 1, and is sectional drawing which cut | disconnected the road bridge in the orthogonal direction of the bridge axis. FIG. 4 is an enlarged view of a part IV in FIG. 1, illustrating a connection structure between a first movable panel body at a pier side end and a pier. It is a perspective view which shows an example of a scaffold panel and the state before a scaffold panel is engaged. It is a flowchart which shows the construction method of the road bridge inspection deck which concerns on 1st Embodiment. It is process drawing explaining an example of the construction method of the road bridge inspection deck which concerns on 1st Embodiment. It is process drawing explaining an example of the construction method of a road bridge inspection deck following FIG. It is the IX-IX arrow line view of FIG. It is a figure explaining the relative relationship of the 1st rail and the 1st movable panel body at the time of transfer and positioning of the 1st movable panel body. It is a side view which shows an example of the road bridge inspection deck which concerns on 2nd Embodiment with a road bridge. It is the XII-XII arrow line view of FIG. 11, and is sectional drawing which cut | disconnected the road bridge in the direction orthogonal to a bridge axis. It is a flowchart which shows the construction method of the road bridge inspection deck which concerns on 2nd Embodiment. It is process drawing explaining an example of the construction method of the road bridge inspection deck which concerns on 2nd Embodiment. It is process drawing explaining an example of the construction method of a road bridge inspection deck following FIG. It is process drawing explaining an example of the construction method of the road bridge inspection deck which concerns on 3rd Embodiment. It is process drawing explaining an example of the construction method of a road bridge inspection deck following FIG.

  Each embodiment will be described below with reference to the accompanying drawings. In addition, in this specification and drawings, about the substantially same component, the duplicate description is abbreviate | omitted by attaching | subjecting the same code | symbol.

[First Embodiment]
<1. Road Bridge Inspection Deck>
First, the road bridge inspection deck according to the first embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a side view showing an example of a road bridge inspection deck according to the first embodiment together with a road bridge, and FIGS. 2 and 3 are views taken along arrows II-II and III-III in FIG. 1, respectively. These are all cross-sectional views of a road bridge cut in a direction perpendicular to the bridge axis. As shown in FIG. 1, the road bridge inspection deck 100 is supported by two bridge piers P1 and P2 arranged at an interval in the bridge axis direction, and includes two main girders B1 provided in the direction perpendicular to the bridge axis. A first rail 10 is attached to each. Furthermore, the road bridge inspection deck 100 includes a first movable panel body including a wheel unit 20 including wheels 21 that can freely travel on the first rails 10 and a scaffold panel 30 supported by the wheel unit 20. 40. That is, the road bridge inspection deck 100 includes a first rail 10 attached to each of the two main girders B1, a first movable panel body 40 movably supported by the two first rails 10, and Have The illustrated example is a road bridge to which the main girder B1 made of I-shaped steel is applied, but may be a road bridge having other types of main girder such as a main girder or box girder made of H-shaped steel. Further, the number of main digits B1 is not limited to two.

  The main girder B1 is supported by the piers P1 and P2 via the support SH. The illustrated example shows a form in which the upper flange of the main beam B1 supports the floor slab S. In this form, a headed stud (not shown) is embedded in the concrete forming the floor slab S. The upper flange of the beam B1 may be embedded in the floor slab S.

  As shown in FIG. 1, between the webs of two main girders B1 extending in the bridge axis direction, cross beams B2 are arranged at a predetermined interval in the bridge axis direction. As shown in FIG. 2, the cross beam B2 in the illustrated example has the web of the cross beam B2 connected to the vertical stiffener ST welded to the web side surface of the main beam B1 with high-strength bolts. A metal wire penetration part Ba is attached to the lower surface of the cross beam B2.

  The first rail 10 is formed of a hanger rail in which two U-shaped members having a U-shaped cross section face each other. The wheel that moves along the hanger rail 10 includes two wheels 21 and an axle 22 that is connected to the wheels 21 so as to be relatively rotatable. Further, a suspension member 23 is inserted into a through hole (not shown) opened in the axle 22. The lower end of the suspension member 23 is fixed to the scaffold panel 30 through a fixing washer 24 between the lower surface of the hanger rail 10 and the scaffold panel 30. Although the first rail 10 is not limited to the hanger rail, it can stably support the scaffold panel 30 with the two wheels 21 and 21, and the suspension member 23 can be lifted from the lower opening or the upper opening. This is a preferred form of rail because it can be taken in and out.

  Brackets Br are connected to the web of the main beam B1 at predetermined intervals in the extending direction of the main beam B1, and the first rail 10 is connected to each bracket Br by bolts or welding. ing.

  The scaffold panel 30 forming the first movable panel body 40 is lifted upward by the suspension member 23 and positioned on the first rail 10 via the fixing washer 24, and is suspended on the upper surface of the first rail 10. By fastening the member 23 with the fixing nut 25, the scaffold panel 30 is positioned with respect to the first rail 10.

  As shown in FIG. 1, an endless wire W1 straddling between two bridge piers P1 and P2 is provided in a wire penetration portion 31 attached to each scaffold panel 30 and a wire penetration portion Ba attached to each cross beam B2. Is inserted. This endless wire W1 is a wire used in the construction method described later, but is also left in the constructed road bridge inspection deck 100 shown in FIG. Even if the connection between the scaffold panel 30 and the first rail 10 is disconnected by the endless wire W1, the endless wire W1 can prevent the scaffold panel 30 from falling.

  As shown in FIG. 3, angle steel 51 is attached to the upper surface of the scaffold panel 30A forming the first movable panel body 40A at the end on the pier P2 side. The angle steel 51 is provided with a through hole (not shown), and a through hole (not shown) is also formed at a predetermined position on the side surface of the first rail 10. The fixing member 50 is inserted through these through-holes, and the wheels 21 are tightened with nuts while pressing the wheels 21 in the Y1 direction from the side, whereby the rotation of the wheels 21 is suppressed, and the end of the end on the pier P2 side is suppressed. One movable panel body 40 </ b> A is fixed to the first rail 10.

  In addition, although illustration is abbreviate | omitted, the bracket which protrudes from the main beam B1 to the side is provided, and the 1st movable panel body 40A is fixed by fixing this bracket and the angle iron 51 of the upper surface of the scaffold panel 30A, for example. May be fixed. Furthermore, the first movable panel body 40A may be fixed by providing a bracket projecting downward from the cross beam B2 and fixing the bracket and, for example, the angle steel 51 on the upper surface of the scaffold panel 30A. . In addition, the first movable panel body 40A is fixed to both the first rail 10 and the main beam B1, the first rail 10 and the horizontal beam B2 are fixed, the first rail 10 and the main beam B1. The form etc. which are fixed to all the cross beams B2 may be sufficient.

  The scaffold panel 30B adjacent to the scaffold panel 30A at the end on the pier P2 side is in contact with the scaffold panel 30A, as shown in FIG. 2, by the suspension member 23 and the fixing nut 25 as shown in FIG. Is positioned at a predetermined position. In the present specification, “fixing” the scaffold panel 30 with respect to the first rail 10 and “positioning” have different meanings. “Fixed” means that the scaffold panel 30 is firmly fixed to the first rail 10 and the main beam B1 and the cross beam B2 so as not to move. On the other hand, “positioning” means that the scaffold panel 30 is locked to the first rail 10 through the fixing washer 24 in a manner that allows some sliding.

  As will be described in detail in the construction method described later, in order from the first movable panel body 40A at the end on the pier P2 side, the other first movable panel bodies 40B and 40C are transferred and installed under the main beam B1. Is called. After the first movable panel body 40A at the end on the pier P2 side is positioned on the first rail 10 by the suspension member 23 or the like, it is firmly fixed to the first rail 10 by the fixing member 50 or the like. Thereafter, each transferred first movable panel body 40B is also positioned with respect to the first rail 10 by the suspension member 23 or the like, but the scaffold panel 30A at the end on the pier P2 side is fixed to the first rail 10. In addition, the end portions of the scaffold panels 30 are engaged with each other. Therefore, the other scaffold panels 30 </ b> B and 30 </ b> C are fixed to the first rail 10 so as not to move.

  Note that all the first movable panel bodies 40 have angle steels 51 and fixing members 50 as shown in FIG. 3, and all the first movable panel bodies 40 are firmly fixed to the first rail 10. May be. Further, only the first movable panel body 40 at the end portion on the pier P2 side and the first movable panel body 40 at the end portion on the pier P1 side have the angle steel 51 and the fixing member 50, and these first movable types. The panel body 40 may be firmly fixed to the first rail 10. In any form, the first movable panel body 40 is firmly fixed to the first rail 10 fixed to the main beam B1, so that the main beam B1 is structurally stable. The road bridge inspection deck 100 is attached.

  FIG. 4 is an enlarged view of a portion IV in FIG. 1 and is a diagram illustrating a connection structure between the first movable panel body at the pier side end and the pier. The connection structure between the pier P2 and the scaffold panel 30A at the end on the pier P2 side is the same as the connection structure shown in FIG. As shown in FIG. 4, the scaffold panel 30C at the end on the pier P1 side is disposed with a gap with respect to the pier P1, and the rubber expansion and contraction, for example, is made so as to close the gap. The member 60 straddles both the top end of the pier P1 and the scaffold panel 30C, and both ends are fixed with pins or the like. The width of the gap is set by the amount of temperature shrinkage of the main beam B1, but can be set to about 100 mm, for example.

  Thus, the scaffold panel 30C at the end on the pier P1 side is not directly fixed to the pier P1 but indirectly connected via the elastic member 60, so that it is fixed to the pier P1 via the support SH. The elastic member 60 can follow the temperature expansion and contraction of the main beam B1 when the main beam B1 is expanded and contracted. If the scaffold panel 30C is directly fixed to the pier P1, the scaffold panel 30C cannot follow the temperature expansion and contraction of the main beam B1 due to the difference in thermal expansion between the main beam B1 and the scaffold panel 30C. Risk of damage.

  FIG. 5 is a perspective view showing an example of the scaffold panel and a state before the scaffold panel is engaged. As shown in FIG. 5, the scaffold panel 30 includes a plate-shaped core member 32 and upper and lower skins 33. The core material 32 can be formed from various materials such as wood and resin material, and an example of the material is polyisocyanurate foam. The skin 33 can be formed from a material having high corrosion resistance, and examples of the material include aluminum, stainless steel, and alloys thereof. Moreover, since the outer skin 33 becomes an external appearance part of the road bridge inspection deck 100, it is preferable to have the color and pattern suitable for the external appearance of an installation place.

  Adjacent scaffold panels 30 are in contact with each other so that their ends in the bridge axis direction are engaged with each other, one end being a male end 36 and the other end being a female end. Part 37. A rubber packing 35, for example, is attached to the male end portion 36. When the male end portion 36 engages with the female end portion 37 of the adjacent scaffold panel 30, the packing 35 serves as a buffer member, and further, the air tightness of the contact portion. Sexuality and liquid tightness are exhibited. In the female end portion 37, the upper skin 33 extends from the end portion of the core member 32, and the end portion is further bent, and the male end portion 36 of the scaffold panel 30 adjacent to the protruding upper skin 33 is connected to the female end portion 37. Fit and engage.

  Furthermore, the scaffold panel 30 has a plurality of ribs 34 extending in a direction perpendicular to the bridge axis. The plurality of ribs 34 increase the bending rigidity and shear rigidity of the scaffold panel 30 and improve the durability of the scaffold panel 30.

  In addition, although illustration is abbreviate | omitted, even if both ends are joined by the fixing tool which consists of a volt | bolt, a clamp, etc. in the state which the edge parts of the scaffold panel 30 were engaged like the example of illustration. Good. Moreover, both ends may be joined by a fixture in the form in which the ends of the scaffold panel 30 do not engage with each other as in the illustrated example.

  Returning to FIG. 1, according to the road bridge inspection deck 100, the main beam B <b> 1 is blocked from the lower space US by the plurality of scaffold panels 30 that are constituent elements thereof. Therefore, in addition to the scaffold panel 30 being a permanent inspection scaffold, the corrosion resistance and corrosion resistance of the main girder B1 and the floor slab S can also be improved, which contributes to the improvement of the durability of the road bridge. Further, by blocking the main beam B1 from the lower space US with the plurality of scaffold panels 30, the traffic noise generated on the road bridge can be shielded by the scaffold panel 30. Therefore, when the space US below the road bridge is included in a noise regulation area from the road bridge, the scaffold panel 30 can also be used as a soundproof panel, and an effect as an inspection deck and soundproof deck is achieved.

<2. Construction method of road bridge inspection deck>
Next, a construction method of the road bridge inspection deck according to the first embodiment will be described with reference to FIGS. FIG. 6 is a flowchart showing a construction method of the road bridge inspection deck according to the first embodiment. 7 and 8 are sequential process diagrams of the construction method. FIG. 9 is a view taken in the direction of arrows IX-IX in FIG. 8 and shows the inside surrounded by the inside of the two main girders B1 and B1 and the lower side of the floor slab S.

  First, as shown in FIG. 7, a first installation step for attaching the first rail 10 is performed on each main beam B1 (S300).

  More specifically, as shown in FIG. 9, on the inner surface of the web of the main beam B1, a first hanger rail is formed with respect to a plurality of brackets Br connected by welding or the like at intervals in the bridge axis direction. The rail 10 is connected with a bolt. In addition, when a road bridge is newly constructed, the bracket Br and the first rail 10 are previously attached to the main girder B1 on the ground before the main girder B1 is installed on the pier with a crane or the like. It is good to leave. In addition, when the road bridge inspection deck 100 is constructed on a road bridge that has already been constructed, a worker who is on a high place worker bolts or welds the bracket Br at a predetermined interval in the bridge axis direction of the main beam B1. Connect with Next, in a state where the first rail 10 is lifted by a crane or the like, an operator who is on the aerial work vehicle connects the first rail 10 to the bracket Br with a bolt.

  Further, in the first installation step, the wire penetration part Ba is also attached to the lower surface of the cross beam B2 connecting the two main beams B1 arranged in parallel.

  Next, as shown in FIG. 8, the first movable panel body 40A to be installed first is transferred in the X3 direction via the first rail 10 from the one pier P1 side to the other pier P2 side. The first fixing step of fixing at the end position on the pier P2 side is performed (S304).

  More specifically, first, the first movable panel body 40A formed by attaching the wheel 21 and the wire penetration part 31 to the upper surface of the scaffold panel 30 is attached to the top of one pier P1 with a crane (not shown). Suspend in the X1 direction at the end. An operator is waiting at the top end of the pier P1, receives the lifted first movable panel body 40A, and fits the wheels 21 of the first movable panel body 40A to the first rail 10 so as to be movable. As shown in FIG. 8, a wire penetration part Ba is attached to each of the plurality of cross beams B <b> 2 arranged in the bridge axis direction, and the worker uses each of the wire penetration parts Ba using a worker at a high place or the like. Insert the wire through. Then, the wire is looped over the bridge pier P1 to the pier P2, and the wire penetration part 31 of the scaffold panel 30A is fixed at the midway position of the wire, thereby forming the endless wire W1. When the worker on the top end of the pier P1 pulls the endless wire W1 in the X2 direction, the first movable panel body 40A has the other pier P2 while the wheels 21 move along the first rail 10. To the X3 direction.

  The upper view of FIG. 10 shows the relative relationship between the first rail 10 and the first movable panel body 40A during the transfer of the first movable panel body 40A. During the transfer of the first movable panel body 40 </ b> A, the first rail 10 and the scaffold panel 30 </ b> A are separated from each other, and the transfer is performed with the scaffold panel 30 </ b> A suspended on the axle 22 via the suspension member 23.

  When the first movable panel body 40A is transferred to a predetermined end position on the other pier P2 side, as shown in the lower diagram of FIG. 10, the suspension member 23 is pulled upward in the Z direction, and the fixing washer 24 is moved. The scaffold panel 30 </ b> A is positioned with respect to the first rail 10. The fixing nut 25 is screwed into the suspension member 23 pulled upward, and the fixing nut 25 is locked to the upper surface of the first rail 10, thereby positioning the scaffold panel 30 </ b> A with respect to a predetermined position of the first rail 10. Done.

  The first movable panel body 40 fixed to the end portion on the pier P2 side is provided with angle steel 51 as shown in FIG. 9 on the upper surface of the scaffold panel 30A which is a component thereof. The angle steel 51 has a through hole 51a. At a predetermined position of the first rail 10 where the scaffold panel 30A is positioned, a corresponding through-hole is also formed in the side surface of the first rail 10. As shown in FIG. 3, the fixing members 50 are inserted into the corresponding through holes, and the wheels 21 are pressed in the Y1 direction from the side to be tightened with nuts, so that the rotation of the wheels 21 is suppressed, and the pier P2 The first movable panel body 40A is firmly fixed to the first rail 10 at a predetermined position on the side end. In the first fixing step, the first movable panel body 40A is fixed to the first rail 10 so that the scaffold panel 30A has a gap of a predetermined width with the pier P2. In the attachment process, which is a subsequent process, the elastic member 60 shown in FIG. 4 is attached so as to close the gap.

  As shown in FIG. 8, the lifting of the first movable panel body 40 to the top of the pier P1 and the transfer of the first movable panel body 40 along the first rail 10 are sequentially repeated, and the adjacent scaffold panels 30, 30 are A first construction step (S306) is performed in which the ends are engaged with each other and contacted without gaps. Note that a gap of a predetermined width is also formed between the scaffold panel 30C and the pier P1 in the first movable panel body 40C at the end on the pier P1 side that is installed last.

  After the first construction process, the elastic member 60 is attached so as to straddle the top end of the pier P2 and the scaffold panel 30A, and similarly, a separate elastic member is straddled across the top end of the pier P1 and the scaffold panel 30C. An attachment process for attaching 60 is performed (S312), and the road bridge inspection deck 100 shown in FIGS. 1 to 3 is constructed.

  According to the construction method described above, the plurality of first movable panel bodies 40 are sequentially transferred from one pier P1 to the other pier P2 along the first rail 10 attached to the main beam B1. The road bridge inspection deck 100 can be efficiently constructed without occupying the entire area of the lower space US of the road bridge.

  In the constructed road bridge inspection deck 100, the scaffold panel 30A at the end on the pier P2 side is firmly fixed to the first rail 10, and the scaffold panel 30B adjacent to the scaffold panel 30A is both of them. The other scaffold panels 30B and 30C are also engaged with each other at the ends. Therefore, the road bridge inspection deck 100 with structural stability is constructed. In the illustrated example, only the scaffold panel 30A at the end on the pier P2 side is fixed to the first rail 10, but the scaffold panel 30C at the end on the pier P1 side is similarly fixed to the first rail 10. It may be a form. Further, all the scaffold panels 30 </ b> A, 30 </ b> B, 30 </ b> C may be fixed to the first rail 10. According to the road bridge inspection deck 100 of these forms, since the several scaffold panel 30 is fixed to the 1st rail 10, the road bridge inspection deck 100 which has much higher structural stability is obtained.

[Second Embodiment]
<1. Road Bridge Inspection Deck>
Next, the road bridge inspection deck according to the second embodiment will be described with reference to FIGS. 11 and 12. FIG. 11 is a side view showing an example of a road bridge inspection deck according to the second embodiment together with a road bridge, and FIG. 12 is a view taken along arrow XII-XII in FIG. FIG. As shown in FIGS. 11 and 12, the road bridge inspection deck 200 includes a plurality of side panels 70 that block the main beam B <b> 1 from the outer side space OS in addition to the plurality of scaffold panels 30. As shown in FIG. 12, two second rails 10A are attached to the outer surface of the web of each main beam B1. Similarly to the first rail 10, the second rail 10A is also a hanger rail. Wheels 21A are movably disposed on two U-shaped members constituting the hanger rail 10A, and the two wheels 21A and 21A are connected to an axle. 22A is connected so as to be relatively rotatable. A wheel unit 20A is formed from the wheels 21A and the like corresponding to the second rails 10A.

  The wheel unit 20A is attached to the side panel 70, and the second movable panel body 40D is formed.

  The side panel 70 is brought into contact with the second rail 10A via the fixing washer 24A, and the support member 26 fixed to the side panel 70 extends to the center of the hanger rail 10A and penetrates the through hole of the axle 22A. Then, it is positioned on the second rail 10A by being tightened with the fixing nut 25A. That is, the second movable panel body 40D is positioned with respect to the second rail 10A.

  Although not shown, the end portions of the side panels 70 aligned in the bridge axis direction also have a male end portion and a female end portion that engage with the end portions of the adjacent side panels 70, similarly to the scaffold panel 30. doing. Further, the side panel 70 at the end on the pier P2 side also has an angle steel provided with a through hole, similarly to the scaffold panel 30A, and through this through hole and the through hole opened in the second rail 10A. Then, the fixing member is inserted, and the wheel 21A is pressed by the fixing member, thereby being firmly fixed to the second rail 10A. Further, the side panel 70 is provided with a wire locking portion 71, and the wire W2 is fixed to the wire locking portion 71. The wire W2 is a side panel from the pier P1 side to the pier P2 side. Served for 70 transfers. A plurality of wire penetrating portions are attached to the side of the web of the main beam B1, and the wires W2 passing through the wire locking portions 71 of the respective side panels 70 are also passed through the wire penetrating portions of the main beam B1 so as to be endless. The wire may be formed. With this endless wire, it is possible to prevent the side panel 70 from falling off when the side panel 70 is detached from the second rail 10A, similarly to the endless wire W1 shown in FIG.

  According to the road bridge inspection deck 200, the main girder B1 is cut off from the lower space US by the plurality of scaffold panels 30 as its constituent elements, and the main girder B1 is separated from the lateral space by the side panel 70. Shut off from OS. That is, the two main girders B1 and the lower surface of the floor slab S are completely blocked from the external space. Therefore, in addition to the scaffold panel 30 being a permanent inspection scaffold, the corrosion resistance and corrosion resistance of the lower surface of the main girder B1 and floor slab S can be further increased, and the durability of the road bridge can be further improved. Contribute. Further, by completely blocking the main beam B1 from the external space by the plurality of scaffold panels 30 and the side panels 70, traffic noise on the road bridge can be shielded by the scaffold panels 30 and the side panels 70. .

<2. Construction method of road bridge inspection deck>
Next, a construction method of the road bridge inspection deck according to the second embodiment will be described with reference to FIGS. FIG. 13: is a flowchart which shows the construction method of the road bridge inspection deck which concerns on 2nd Embodiment. 14 and 15 are process diagrams of the construction method in this order.

  After attaching the first rail 10 to each main beam B1 in the first installation step (S300), as shown in FIG. 14, in the second installation step, the second rail 10A is attached to the outer surface of the web of the main beam B1. Attach (S302). As for the mounting of the second rail 10A, when a road bridge is newly installed, the first rail 10 is mounted on one surface of the web of the main beam B1 on the ground, and then the second rail 10A is mounted on the other surface of the web. . In addition, when the road bridge inspection deck 200 is constructed on a road bridge that has already been constructed, a worker who has boarded a high altitude worker with the second rail 10A lifted to the side of the main beam B1 by a crane or the like. Attaches the second rail 10A by welding or the like.

  After the first fixing step (S304) and the first construction step (S306), a plurality of scaffold panels 30 extending from the pier P1 to the pier P2 are installed at a position below the main beam B1, and then the second fixing step is performed ( S308). Specifically, the second movable panel body 40A formed by attaching the wheel unit 20A to the side panel 70 is lifted to the top end of the pier P1 by a crane, and each wheel 21A is fitted into the second rail 10A. . Then, one end of the wire W2 is fixed to the wire locking portion 71, and the other end of the wire W2 is carried to the top end of the other bridge pier P2 using an aerial work vehicle or the like. When the worker on the top end of the pier P2 pulls the wire W2, the wheel 21A moves on the second rail 10A and transfers the second movable panel body 40D to the pier P2 side in the X4 direction. At the end on the pier P2 side, the second movable panel body 40D is positioned, and the side panel 70 is fixed to the second rail 10A. In addition, although illustration is abbreviate | omitted, when transferring the 2nd movable panel body 40A, you may form an endless wire similarly to the transfer method of the 1st movable panel body 40. That is, a plurality of wire penetrating portions are attached to the side surface of the main beam B1 at intervals in the bridge axis direction, and the operator inserts the wires into the wire penetrating portions and also wires the wire locking portions 71. It is locked while being inserted, and the wire is looped over the side surface of the main beam B1 between the piers P1 and P2 to form an endless wire. When the worker on the top end of the pier P1 pulls the endless wire, the wheel 21A of the second movable panel body 40D is transferred to the other pier P2 side while moving along the second rail 10A. It is a method.

  A 2nd construction process is implemented following a 2nd fixing process (S310). Specifically, the wire W2 is connected to another second movable panel body 40D in the same manner on the side of the second movable panel body 40D fixed to the second rail 10A at the end on the pier P2 side. It pulls and transfers and engages the ends of the second movable panel body 40D. Thereafter, the other second movable panel body 40D is sequentially transferred and positioned in the same manner. And the attachment process which attaches the expansion-contraction member 60 is implemented (S312), and the road bridge inspection deck 200 shown in FIG.

  According to the construction method described above, along the first rail 10 and the second rail 10A attached to the main beam B1, a plurality of first movable panel bodies 40 from one pier P1 to the other pier P2 and The second movable panel body 40D is sequentially transferred. Therefore, the road bridge inspection deck 200 can be efficiently constructed without completely occupying the space below the road bridge.

  In the constructed road bridge inspection deck 200, the scaffold panel 30 at the end on the pier P2 side is firmly fixed to the first rail 10, and the side panel 70 is firmly fixed to the second rail 10A. Furthermore, the end portions of the adjacent scaffold panels 30 and the end portions of the side panels 70 are engaged with each other, whereby the road bridge inspection deck 200 having structural stability is constructed.

  In addition, the order of each process shown in FIG. 13 is not limited to the example of illustration, There can be various construction orders. For example, after performing S300, S304, and S306 first and constructing a scaffold panel, the construction method which implements S302, S308, and S310 and constructs a side panel may be sufficient. Moreover, the construction method which performs S312 by the side of the pier P2 after S300, and performs S312 by the side of the pier P1 after S302 may be sufficient.

[Third Embodiment]
<Construction method for road bridge inspection deck>
Next, the construction method of the road bridge inspection deck according to the third embodiment will be described with reference to FIGS. 16 and 17. 16 and 17 are process diagrams of the construction method of the road bridge inspection deck in order. In this construction method, as shown in FIG. 16, in the first installation step, a third rail 10B extending in the vertical direction from the foot of one pier P1 to the top end is attached to the side surface of the pier P1, and the third rail 10B is already attached. The first rail 10 attached to the main beam B1 is made continuous.

  Next, in the first fixing step, as shown in FIG. 17, one end of the wire W2 is locked to the first movable panel body 40 at the foot of the pier P1, and the wire W2 is connected to the wire penetration portion Ba of the cross beam B2. The other end of the wire W2 is suspended from the foot of the other pier P2. By winding the other end of the wire W2 with a winding device (not shown) or the like, the first movable panel body 40 is moved along the third rail 10B and the first rail 10 continuous from the foot of one pier P1. It transfers to the edge part by the side of the other bridge pier P2, and it fixes to the 1st rail 10.

  In the first construction step, the other first movable panel body 40 is sequentially transferred from the foot of one pier P1 to the other pier P2 side in the same manner, and the ends of the scaffold panel 30 are engaged with each other. The road bridge inspection deck 100 is constructed.

  According to the construction method described above, the work of lifting the first movable panel body 40 to the top end of the pier P1 by a heavy machine such as a crane becomes unnecessary. Therefore, it is an effective construction method in an environment where houses and the like exist in the lower space US of the road bridge and a work space for heavy machinery cannot be secured.

  It should be noted that other embodiments in which other components are combined with the configurations described in the above embodiments may be used, and the present invention is not limited to the configurations shown here. This point can be changed without departing from the spirit of the present invention, and can be appropriately determined according to the application form.

100, 200: Road bridge inspection deck 10: First rail (hanger rail)
10A: Second rail (hanger rail)
10B: Third rail (hanger rail)
20, 20A: Wheel units 21, 21A: Wheels 22, 22A: Axle 23: Suspension member 24: Fixing washer 25: Fixing nut 26: Support members 30, 30B: Scaffolding panels 30A, 30C: Scaffolding panel (pier end side) Part scaffolding panel)
31: Wire penetration part 32: Core material 33: Skin 34: Rib 36: Male end part 37: Female end part 40, 40A: First movable panel body 40B, 40C: First movable panel body 40D: Second movement Formula panel body 50: Fixing member 60: Stretch member 70: Side panel B1: Main beam B2: Cross beam Ba: Wire penetration part Br: Bracket W1: Endless wire W2: Wire S: Floor slabs P1, P2: Pier SH: Support US: Lower space OS: Side space

Claims (14)

A plurality of main beam that is supported by a plurality of piers arranged in the bridge axis, mounted on a plurality of brackets that are secured to the inner surface of the plurality of main girder web being parallel in the bridge axis perpendicular, A plurality of first rails extending in the bridge axis direction across the plurality of piers ;
Each wheel unit comprising said first rail from traveling freely plurality of wheels, and the first mobile panel comprising a scaffold panel, which is supported by the suspension member to be inserted in a through hole opened to the axle of the wheel And having a body,
A plurality of the scaffold panels abut against each other, and the main girder is cut off from the lower space side by side in the bridge axis direction below the main girder;
The fixing member is inserted into the through-hole established in the structural steel attached to the scaffold panel and the through-hole established in the first rail, so that the at least one pier side end is present. The first movable panel body is fixed to the first rail;
Alternatively, by fixing a bracket projecting laterally from the main girder and a shape steel attached to the scaffold panel, the first movable panel body at the end of at least one pier side is the Fixed to the main girder,
Alternatively, the bracket extending downward from the cross beam connecting the plurality of main girders and the shape steel attached to the scaffold panel are fixed, so that the first at the end of at least one pier side is fixed. A movable panel body is fixed to the cross beam,
The main girders at the left and right ends in the direction perpendicular to the bridge axis are respectively attached to a plurality of brackets fixed to the outer surface of the web of the main girder , and extend in the bridge axis direction between the plurality of bridge piers. A second rail;
A second movable panel body comprising a wheel that can travel on each of the second rails, and a side panel that is supported by a support member that penetrates a through hole provided in an axle of the wheel. And
A plurality of the side panels abutting each other, blocking the main girder from the outer side space in a bridge axis direction outside the main girder;
By inserting a fixing member into a through hole established in the steel frame attached to the side panel and a through hole established in the second rail, at least one pier side end The second movable panel body is fixed to the second rail;
The road bridge inspection deck, wherein the scaffold panel and the side panel block the plurality of main girders from an external space.   2. The road bridge inspection deck according to claim 1, wherein the first movable panel bodies at the ends of both piers are fixed to the first rail.   The road bridge inspection deck according to claim 1 or 2, wherein all the first movable panel bodies are fixed to the first rail.   The road bridge inspection deck according to any one of claims 1 to 3, wherein ends of the two scaffold panels that are in contact with each other are engaged with each other.   The road bridge inspection deck according to any one of claims 1 to 4, wherein the two scaffold panels that are in contact with each other are fixed by a fixture. There is a gap between the pier and the first movable panel body at the pier side end,
Across said first movable panel of the pier and the pier end, characterized in that it further comprises an elastic member for closing the gap, any one of claims 1 to 5 The road bridge inspection deck described in 1. A plurality of the horizontal beams connecting the plurality of main beams arranged side by side in the direction perpendicular to the bridge axis are arranged in the bridge axis direction,
Each is attached a plurality of wires penetrating portion on the upper surface of the plurality of cross beams of the lower surface and the scaffold panel,
The endless wire extending between the two piers penetrates through the plurality of wire penetration portions of the cross beam and the scaffold panel, according to any one of claims 1 to 6. Road bridge inspection deck as described in the section. A plurality of main beam that is supported by a plurality of piers arranged in bridge axis direction, each of the plurality of brackets is fixed to the inner surface of the plurality of main girder web being parallel in the bridge axis perpendicular, the A first installation step of attaching a first rail extending in a bridge axis direction across a plurality of bridge piers ;
A plurality of wheels, and the scaffold panel supported by the suspension member to be inserted in a through hole opened to the axle of the wheel, the first movable panel body having the at one pier side, each of said wheels A through hole provided in a structural steel attached to the scaffolding panel, the first movable panel body being transported to the corresponding first rail, movably attached to the other pier side, and the first A first fixing step of fixing the first movable panel body to the first rail by inserting a fixing member through a through hole formed in the rail;
The other first movable panel body is sequentially transferred from the one pier side to the other pier side, and the adjacent scaffold panels are brought into contact with each other without any gap to construct a road bridge inspection deck, and the scaffold A first construction step of blocking the main girder from the lower space with a panel;
A second installation step of attaching a second rail extending in the bridge axis direction between the plurality of bridge piers on the outer side surfaces of the main girder on the left and right ends in the direction perpendicular to the bridge axis ; ,
A wheel and a side panel supported by a support member penetrating a through-hole formed in an axle of the wheel. The wheel of the second movable panel body includes a second panel on one pier side. It is movably attached to the rail, the second movable panel body is transferred to the other pier side, a through-hole opened in the shape steel attached to the side panel, and opened in the second rail. A second fixing step of fixing the second movable panel body to the second rail by inserting a fixing member through the through-hole ,
The other second movable panel body is sequentially transferred from the one abutment side to the other abutment side, and the adjacent side panels are brought into contact with each other without a gap, and the scaffold panel and the side panel are brought into contact with each other. And a second construction step of shutting off the plurality of main girders from the external space. 9. The road bridge according to claim 8 , wherein the first movable panel body at the end on the side of the one pier, which is finally attached to the first rail, is also fixed to the first rail. Inspection deck construction method. The method for constructing a road bridge inspection deck according to claim 8 or 9 , wherein all the first movable panel bodies are fixed to the first rail at a transferred position. To preceding end of the scaffold panel being transported, characterized in that going then engaging the end portion of the scaffold panel to be transferred, to any one of claims 8 to 10 The construction method of the described road bridge inspection deck. A plurality of cross beams connecting the plurality of main girders provided side by side in the direction perpendicular to the bridge axis are arranged in the bridge axis direction,
A plurality of wire penetrations are attached to the lower surface of the plurality of cross beams and the upper surface of the scaffold panel,
An endless wire extending between the two piers is formed by passing a wire through the plurality of wire penetrating portions in order and bridging the wire in an annular shape between the two piers. When transferring the one movable panel body, the scaffold panel is fixed at an intermediate position of the wire, and the first movable panel body is transferred by pulling the endless wire, The construction method of the road bridge inspection deck as described in any one of Claims 8 thru | or 11 . A gap is provided between both the piers and the first movable panel body at each pier side end, and the gap spans between the pier and the first movable panel body at the pier side end. The road bridge inspection deck construction method according to any one of claims 8 to 12 , further comprising an attaching step of attaching an expansion / contraction member that closes the door. In the first installation step, a third rail extending in the vertical direction from the foot of the one pier to the top is attached to a side surface of the pier, and is attached to the third rail extending in the vertical direction and the main girder. With the first rail,
In the first fixing step, the scaffold panel is transferred to the other pier side along the third rail and the first rail continuous from the foot of the one pier, and fixed to the first rail,
The said 1st construction process WHEREIN: Another said 1st movable panel body is sequentially transferred from the said foot of one said pier to the said other pier side, The one of Claims 8 thru | or 13 characterized by the above-mentioned. The construction method of the road bridge inspection deck described in the paragraph.

Images