JP6630260B2 - Temporary assembly bridge and floor slab replacement method - Google Patents

Description

  The present invention relates to a temporary assembly bridge and a floor slab replacement method.

  For existing bridges constructed for rivers, motorways, and the like, techniques for replacing existing floor slabs have been proposed. For example, in Patent Literature 1, a frame that can travel in the front-rear direction by traveling wheels, a beam extending in the front-rear direction below the frame, and an elevator suspended movably in the front-rear direction at a position in front of the beam. Replacement work with an old slab removal and unloading device, and a new slab loading and laying device with an elevator that can be moved in the front-rear direction and turned horizontally in the rear position of the beam. Machine is disclosed.

JP-A-11-131427

  By the way, in the above-mentioned technology, the road for which the floor slab is replaced is closed for a long time with the work of replacing the floor slab. Therefore, it is desired to reduce the time of closing roads due to the work of replacing floor slabs.

  Therefore, an object of the present invention is to provide a temporary assembly bridge and a method of replacing a slab, which can reduce the time of road closure during the slab replacement operation.

  The present invention includes a first unit, a second unit, and a third unit that form a temporary road that extends along a direction in which a road slab is exchanged, along a direction in which the road extends. A second connecting portion of the second unit and a third connecting portion of the third unit are provided at both ends of the first temporary road portion forming the road and the extending direction of the temporary road formed by the first temporary road portion. And a first connection portion detachably connectable to each of the first, second, and third units. The second unit includes a second temporary road portion forming a temporary road, and an extending direction of the temporary road formed by the second temporary road portion. At both ends of the first unit and the second connection unit detachably connectable to the first connection unit of the first unit and the third connection unit of the third unit, respectively. A third temporary road portion to be formed, and a temporary road formed by the third temporary road portion. A third connecting portion detachably connected to each of the first connecting portion of the first unit and the second connecting portion of the second unit at both ends in the extending direction of the road; Is connected to one of the first connection portions and one of the second connection portions of the second unit, and the other second connection portion of the second unit is connected to one of the third connection portions of the third unit. Sometimes, the second temporary road section of the second unit forms a temporary road, and the first temporary road section of the first unit and the third temporary road section of the third unit are the road and the second temporary road of the second unit. Forming a sloping road connecting the temporary road formed by the first unit and the second connecting unit of the second unit and the third connecting unit of the third unit, and the third third unit of the third unit. When the connecting portion is connected to one of the first connecting portions of the first unit, the third unit is closed. The third temporary road section of the unit forms a temporary road, and the second temporary road section of the second unit and the first temporary road section of the first unit are formed by the road and the third temporary road section of the third unit. Forming a slope connecting the temporary road with the first unit, the third connecting portion of the third unit and the first connecting portion of the first unit are connected, and the first connecting portion of the first unit is connected to the first connecting portion. When one of the two units is connected to one of the second connecting portions, the first temporary road portion of the first unit forms a temporary road, and the third temporary road portion of the third unit and the second temporary road portion of the second unit. The temporary road section is a temporary assembly bridge that forms a slope connecting the road and a temporary road formed by the first temporary road section of the first unit.

  According to this configuration, the temporary assembly bridge includes the first unit, the second unit, and the third unit that form a temporary road that extends along the direction in which the road slabs are exchanged along the road. . Thus, when the temporary assembly bridge is installed, it is not necessary to keep the road closed during the work of replacing the slab. The first unit, the second unit, and the third unit have a first temporary road portion, a second temporary road portion, and a third temporary road portion, respectively, that form a temporary road. It has one connection part, a second connection part, and a third connection part. By changing the order in which the first unit, the second unit, and the third unit are connected by the first connection unit, the second connection unit, and the third connection unit, the first temporary road unit, the second temporary road unit, and the third temporary road unit are connected. Each of the temporary road portions forms both a temporary road and a slope connecting the road and the temporary road. Accordingly, the slab is replaced by moving the temporary assembly bridge while changing the order in which the first unit, the second unit, and the third unit are connected with the change of the position where the slab is replaced. It is possible to shorten the time of closing the road for moving the temporary assembly bridge due to the change of the position. Therefore, as a whole, it is possible to reduce the time of closing roads due to the work of replacing the floor slab.

  In this case, each of the first connecting portions is capable of ascending and descending along the first supporting portion erected on the road and the end of the first temporary road portion on the side of the first connecting portion along the first supporting portion. Each of the second connecting portions includes a first up-and-down portion, and each of the second connecting portions includes a second support portion erected on the road and an end of the second temporary road portion on the side of the second connecting portion along the second support portion. A second elevating part capable of ascending and descending the part, wherein each of the third connecting parts includes a third supporting part erected on the road and a third connecting part of the third temporary road part along the third supporting part. It is preferable to include a third elevating unit capable of elevating the end on the side of the unit.

  According to this configuration, each of the first connecting portions includes the first support portion erected on the road and the end of the first temporary road portion on the side of the first connection portion along the first support portion. It includes a first elevating part that can be raised and lowered, and the second connecting part and the third connecting part also have the same configuration. Accordingly, when the temporary assembly bridge is installed, the first connection portion, the second connection portion, and the third connection portion are connected to each other, and the first connection portion, the second connection portion, or the third connection portion allows the first connection portion. The end of the temporary road section, the second temporary road section or the third temporary road section can be raised and lowered to form a temporary road and a slope connecting the road and the temporary road. On the other hand, when the temporary assembly bridge is moved, the first unit, the second unit, and the third unit are moved while changing the order in which the first unit, the second unit, and the third unit are connected, and the first unit is moved up and down. Section, the second elevating section or the third elevating section, the end of the first temporary road section, the second temporary road section or the third temporary road section is raised and lowered to connect the temporary road and the road with the temporary road. Can be reformed. Therefore, the efficiency of setting and moving the temporary assembly bridge can be improved.

  In this case, the first support portion and the first temporary road portion are detachably connected to each other, the second support portion and the second temporary road portion are detachably connected to each other, and the third support portion and the third temporary road portion are connected to each other. It is preferable that the temporary road section is detachably connected to the temporary road section.

  According to this configuration, the first support portion and the first temporary road portion are detachably connected to each other, and the second support portion, the second temporary road portion, the third support portion, and the third temporary road portion have the same configuration. Having a configuration. Accordingly, when the temporary assembly bridge is moved by the first unit, the second unit, and the third unit, the second support portion and the second temporary road portion are connected between the first support portion and the first temporary road portion. By separating the first or second support section, the first temporary section, the second temporary section, the second temporary section, the third temporary section, and the third support section by separating the third support section and the third temporary section. Since each of the three temporary road sections is easily moved, the efficiency of moving the temporary assembly bridge can be improved.

  In this case, the first unit lifts the floor, the second temporary road separated from the second support, and the third temporary road separated from the third support below the first temporary road. , A first crane unit that can be moved along the direction in which the temporary road formed by the first temporary road unit extends, and the second unit includes a floor slab, Moving along the extending direction of the temporary road formed by the second temporary road section while lifting the first temporary road section separated from the first support section and the third temporary road section separated from the third support section A second crane portion capable of being moved, the third unit being separated from the first temporary road portion and the second support portion separated from the floor slab, the first support portion below the third temporary road portion; Is formed by the third temporary road section while lifting the second temporary road section It is preferred to have a third crane unit capable of moving along the extending direction of 設道 path.

  According to this configuration, the first unit is provided below the first temporary road section, the slab, the second temporary road section separated from the second support section, and the third temporary road section separated from the third support section. Has a first crane portion that can be moved along the extension direction of the temporary road formed by the first temporary road portion while lifting the second unit, and the second unit and the third unit also have the same configuration. The first cranes and the like can improve the efficiency of exchanging floor slabs and moving the temporary assembly bridge.

  In addition, the present invention includes a first unit, a second unit, and a third unit that form a temporary road that extends along a direction in which the floor slab is exchanged along the road, and the first unit is A first temporary road portion forming a temporary road, and both ends of the temporary road formed by the first temporary road portion in the direction in which the temporary road extends, the second connecting portion of the second unit and the third temporary portion of the third unit. A first connecting portion detachably connectable to each of the connecting portions, wherein the second unit includes a second temporary road portion forming a temporary road, and an extension of a temporary road formed by the second temporary road portion. At both ends in the direction of presence, a second connecting portion detachably connectable to each of the first connecting portion of the first unit and the third connecting portion of the third unit is provided. A third temporary road section forming a road and a third temporary road section; A temporary assembly bridge having, at both ends in the extension direction of the temporary road, a third connection portion detachably connectable to each of the first connection portion of the first unit and the second connection portion of the second unit. Is a floor slab replacement method using the first unit and the second unit. A second temporary road section of the second unit is formed with a first temporary road section of the first unit and a third temporary road section of the third unit by connecting the third temporary link section of the second unit to the third temporary link section of the second unit. A first installation step of forming a slope connecting the temporary road formed by the second temporary road section of the second unit and the first temporary road section of the first unit installed in the first installation step; Either the second temporary road section of the unit or the third temporary road section of the third unit A first replacement step of replacing the floor slab below the first unit, and after the first replacement step, the connection between one of the first connection portions of the first unit and the one second connection portion of the second unit is separated. The other third connecting portion of the three units is connected to one of the first unit and the first connecting portion of the other of the first unit, and a temporary road is formed in the third temporary road portion of the third unit. A second installation step of forming a slope connecting the road and the temporary road formed by the third temporary road section of the third unit in the second temporary road section and the first temporary road section of the first unit; A second replacement step of replacing a floor slab below any one of the second temporary road section of the second unit, the third temporary road section of the third unit, and the first temporary road section of the first unit installed in the process. It is a floor slab replacement method provided with.

  In this case, each of the first connecting portions is capable of ascending and descending along the first supporting portion erected on the road and the end of the first temporary road portion on the side of the first connecting portion along the first supporting portion. Each of the second connecting portions includes a first up-and-down portion, and each of the second connecting portions includes a second support portion erected on the road and an end of the second temporary road portion on the side of the second connecting portion along the second support portion. A second elevating part capable of ascending and descending the part, wherein each of the third connecting parts includes a third supporting part erected on the road and a third connecting part of the third temporary road part along the third supporting part. A third elevating part capable of elevating an end on the side of the part, and in the second setting step, the third elevating part of the third connecting part that was not connected to the second connecting part in the first setting step, The end of the third temporary road section on the side of the third connection section is raised so that the third temporary road section of the third unit forms a temporary road, and is connected to the third connection section in the second installation step. The first elevating portion of the first connecting portion is configured such that the first temporary road portion of the first unit forms a slope connecting the road and the temporary road formed by the third temporary road portion of the third unit. The end of the first temporary road portion on the side of the first connecting portion is raised, and the second elevating portion of the second connecting portion connected to the first connecting portion in the first installation step causes the second unit of the second unit to move. The end on the side of the second connecting portion of the second temporary road portion is lowered so that the temporary road portion forms a slope connecting the road and the temporary road formed by the third temporary road portion of the third unit. Is preferred.

  In this case, the first support portion and the first temporary road portion are detachably connected to each other, the second support portion and the second temporary road portion are detachably connected to each other, and the third support portion and the third temporary road portion are connected to each other. In the second installation step, the first support portion and the first temporary road portion are separated from each other, and then the first support portion and the first temporary road portion are connected again. In addition, it is preferable to connect the third connection portion and the first connection portion that have not been connected to the second connection portion in the first installation step.

  In this case, the first unit lifts the floor, the second temporary road separated from the second support, and the third temporary road separated from the third support below the first temporary road. , A first crane unit that can be moved along the direction in which the temporary road formed by the first temporary road unit extends, and the second unit includes a floor slab, Moving along the extending direction of the temporary road formed by the second temporary road section while lifting the first temporary road section separated from the first support section and the third temporary road section separated from the third support section A second crane portion capable of being moved, the third unit being separated from the first temporary road portion and the second support portion separated from the floor slab, the first support portion below the third temporary road portion; Is formed by the third temporary road section while lifting the second temporary road section A third crane unit that can be moved along the extension direction of the road, and in the first replacement step, the first crane unit of the first unit, the second crane unit of the second unit, and the third unit The floor slab was replaced using any one of the third crane units of the first unit, and in the second installation step, the floor plate was separated from the first support unit by the second crane unit of the second unit and the third crane unit of the third unit. After moving the first temporary road portion, the first connecting portion and the first temporary road portion are connected again, and the third connecting portion and the first connecting portion that have not been connected to the second connecting portion in the first installation step. In the second replacement step, the floor unit is replaced using any one of the second crane unit of the second unit, the third crane unit of the third unit, and the first crane unit of the first unit. Is preferred.

  ADVANTAGE OF THE INVENTION According to the temporary assembly bridge and floor slab replacement method of the present invention, it is possible to shorten the time of road closure during the slab replacement work.

It is a side view of the temporary assembly bridge which concerns on embodiment, and is a figure which shows the 1st installation process of the floor slab replacement method which concerns on embodiment. FIG. 2 is an enlarged view of the vicinity of a first connection part of a first unit and a second connection part of a second unit of FIG. 1. It is a front view of the 2nd unit of FIG. FIG. 3 is an enlarged view of a vicinity of a connection shaft of a second support portion of the second unit and a connection groove of a second temporary road portion in FIG. 2. It is a perspective view of the 2nd crane part of the 2nd unit of FIG. It is a figure showing the 1st exchange process of the floor slab exchange method concerning an embodiment. It is a figure showing the state where the end of the 3rd temporary road part of the 3rd unit was raised in the 2nd installation process of the floor slab exchange method concerning an embodiment. In the second installation step of the floor slab replacement method according to the embodiment, the first temporary road separated from the first support portion of the first unit by the second crane portion of the second unit and the third crane portion of the third unit. It is a figure which shows the process of moving a part. In the second installation step of the floor slab replacement method according to the embodiment, while the first support portion and the first temporary road portion are connected again, the third connection portion of the third unit and the first connection portion of the first unit are connected to each other. It is a figure which shows the process of connecting. It is a figure showing the state where the end of the 1st temporary road part of the 1st unit was raised in the 2nd installation process of the floor slab exchange method concerning an embodiment. It is a figure showing the state where the end of the 2nd temporary road part of the 2nd unit was lowered in the 2nd installation process of the floor slab exchange method concerning an embodiment. It is a figure showing the 2nd exchange process of the floor slab exchange method concerning an embodiment. It is a figure showing the state where the end of the 1st temporary road part of the 1st unit was raised in the 3rd installation process of the floor slab exchange method concerning an embodiment. In the third installation step of the floor slab replacement method according to the embodiment, the second temporary road separated from the second support portion of the second unit by the third crane portion of the third unit and the first crane portion of the first unit. It is a figure which shows the process of moving a part. In the third installation step of the floor slab replacement method according to the embodiment, while the second support portion and the second temporary road portion are connected again, the first connection portion of the first unit and the second connection portion of the second unit are connected to each other. It is a figure which shows the process of connecting. It is a figure showing the state where the end of the 2nd temporary road part of the 2nd unit was raised in the 3rd installation process of the floor slab exchange method concerning an embodiment. It is a figure showing the state where the end of the 3rd temporary road part of the 3rd unit was lowered in the 3rd installation process of the floor slab exchange method concerning an embodiment. It is a figure showing the 3rd exchange process of the floor slab exchange method concerning an embodiment. It is a figure which shows the state which raised the edge part of the 2nd temporary road part of the 2nd unit in the 4th installation process of the floor slab replacement method which concerns on embodiment. In the fourth installation step of the floor slab replacement method according to the embodiment, the third temporary road separated from the third support portion of the third unit by the first crane portion of the first unit and the second crane portion of the second unit. It is a figure which shows the process of moving a part. In the fourth installation step of the floor slab replacement method according to the embodiment, while the third support portion and the third temporary road portion are connected again, the second connection portion of the second unit and the third connection portion of the third unit are connected to each other. It is a figure which shows the process of connecting. It is a figure which shows the state which raised the edge part of the 3rd temporary road part of the 3rd unit in the 4th installation process of the floor slab replacement method which concerns on embodiment. It is a figure showing the state where the end of the 1st temporary road part of the 1st unit was lowered in the 4th installation process of the floor slab exchange method concerning an embodiment. Each of the first unit, the second unit and the third unit is connected to a plurality of first temporary road sections, a second temporary road section and a third temporary road section, and a plurality of pairs of first connection sections, second connection sections and third connection sections. It is a figure which shows the aspect which constituted by the part and formed the temporary assembly bridge.

  Hereinafter, a temporary assembly bridge and a floor slab replacement method according to an embodiment of the present invention will be described in detail with reference to the drawings.

  The temporary assembly bridge 1 according to the present embodiment shown in FIG. 1 is used for replacing an existing floor slab in an existing bridge constructed for a river, a motorway, or the like. In the example of FIG. 1, the existing bridge has a road R supported by piers P1, P2, P3, P4, P5, and the like. The temporary assembly bridge 1 of the present embodiment forms a temporary road TR extending along the direction in which the road R extends above the road R on which the floor slab is exchanged. The temporary assembling bridge 1 and the floor slab replacement method of the present embodiment are applied for replacing an existing floor slab on a road formed on the ground that is not supported by the pier P1 or the like, in addition to the bridge. Is also good.

  The temporary assembly bridge 1 includes a first unit 100, a second unit 200, and a third unit 300 that form a temporary road TR extending along the direction in which the road R extends above the road R on which the floor slab is exchanged. Prepare. The first unit 100, the second unit 200, and the third unit 300 each have the same configuration. The first unit 100 includes a first temporary road portion 110A that forms the temporary road TR, and a second temporary unit TR of the second unit 200 at both ends in the extending direction of the temporary road TR formed by the first temporary road portion 110A. It has first connecting portions 120A and 130A that can be detachably connected to the two connecting portions 220A and 230A and the third connecting portions 320A and 330A of the third unit 300, respectively.

  Similarly to the first unit 100, the second unit 200 includes a second temporary road portion 210A that forms the temporary road TR, and both ends in the extending direction of the temporary road TR formed by the second temporary road portion 210A. In addition, there are second connecting portions 220A and 230A detachably connected to the first connecting portions 120A and 130A of the first unit 100 and the third connecting portions 320A and 330A of the third unit 300, respectively. Similarly to the first unit 100, the third unit 300 includes a third temporary road portion 310A that forms the temporary road TR and both ends in the extending direction of the temporary road TR formed by the third temporary road portion 310A. Further, there are provided third connecting portions 320A and 330A which can be detachably connected to the first connecting portions 120A and 130A of the first unit 100 and the second connecting portions 220A and 230A of the second unit 200, respectively.

  As shown in FIG. 1, one first connecting portion 130A of the first unit 100 and one second connecting portion 220A of the second unit 200 are connected, and the other second connecting portion 230A of the second unit 200 When one third connecting portion 320A of the third unit 300 is connected, the second temporary road portion 210A of the second unit 200 forms a temporary road TR and the first temporary road portion of the first unit 100. 110A and the third temporary road section 310A of the third unit 300 form a slope SR connecting the road R and the temporary road TR formed by the second temporary road section 210A of the second unit 200.

  In addition, as shown in FIG. 11 and described later, one second connection portion 230A of the second unit 200 and one third connection portion 320A of the third unit 300 are connected, and the other third connection portion 320A of the third unit 300 When the third connecting portion 330A is connected to one of the first connecting portions 120A of the first unit 100, the third temporary road portion 310A of the third unit 300 forms the temporary road TR, and the third temporary road portion 310A of the second unit 200 is connected. The second temporary road 210A and the first temporary road 110A of the first unit 100 form a slope SR connecting the road R and the temporary road TR formed by the third temporary road 310A of the third unit 300. .

  In addition, as shown in FIG. 17 and described later, one third connection portion 330A of the third unit 300 and one first connection portion 120A of the first unit 100 are connected, and the other third connection portion 120A of the first unit 100 is connected. When the first connecting portion 130A and the second connecting portion 220A of the second unit 200 are connected, the first temporary road portion 110A of the first unit 100 forms the temporary road TR, and The third temporary road portion 310A and the second temporary road portion 210A of the second unit 200 form a slope SR connecting the road R and the temporary road TR formed by the first temporary road portion 110A of the first unit 100. .

  Each of the first connecting portions 120A and 130A is provided with a first supporting portion 121, 131 erected on the road R, and a first connecting portion 120A of the first temporary road portion 110A along the first supporting portions 121, 131. , 130A that can move up and down. Each of the second connecting portions 220A and 230A is provided with a second supporting portion 221 and 231 erected on the road R, and the second connecting portion 220A of the second temporary road portion 210A along the second supporting portions 221 and 231. , 230A that can move up and down at the end on the side of the side. Each of the third connecting portions 320A and 330A is provided along the third supporting portions 321 and 331 erected on the road R and the third connecting portion 320A of the third temporary road portion 310A along the third supporting portions 321 and 331. , 330A that can move up and down at the end on the side of 330A.

  As shown in FIGS. 1, 11 and 17, the roads of the first temporary road 110A of the first unit 100, the second temporary road 210A of the second unit 200, and the third temporary road 310A of the third unit 300. The length along the extending direction of R is set to be substantially the same as the distance between each of the adjacent piers P1 to P5. Thereby, the first support portions 121 and 131 supporting the first temporary road portion 110A, the second support portions 221 and 231 supporting the second temporary road portion 210A, and the third support portion supporting the third temporary road portion 310A. By making the positions of 321 and 331 coincide with the positions of the piers P1 to P5 and the like, it is possible to reduce the influence of the load of the temporary assembled bridge 1 on the bridge.

  As described later, the first support portions 121 and 131 and the first temporary road portion 110A are detachably connected, and the second support portions 221 and 231 and the second temporary road portion 210A are detachably connected. The third support portions 321 and 331 are detachably connected to the third temporary road portion 310A.

  As shown in FIG. 1, the second unit 200 includes a floor, a first temporary road portion 110A separated from first support portions 121 and 131 described below, and a third temporary road portion 110A below the second temporary road portion 210A. A second crane portion 240A that can be moved along the extending direction of the temporary road TR formed by the second temporary road portion 210A while lifting the third temporary road portion 310A separated from the support portions 321 and 331. Can be provided.

  As shown in FIG. 11, the third unit 300 includes a floor, a first temporary road 110A separated from first pillars 121 and 131, which will be described below, and a second temporary road 110A below the third temporary road 310A. A third crane portion 340A that can be moved along the extending direction of the temporary road TR formed by the third temporary road portion 310A while lifting the second temporary road portion 210A separated from the support portions 221 and 231. Can be provided.

  As shown in FIG. 17, the first unit 100 is provided below the first temporary road section 110A with a floor slab, a second temporary road section 210A separated from second support sections 221 and 231, and a third temporary road section 210A. A first crane unit 140A that can be moved along the extending direction of the temporary road TR formed by the first temporary road unit 110A while lifting the third temporary road unit 310A separated from the pillars 321 and 331. Can be provided.

  Hereinafter, the details of the first unit 100, the second unit 200, and the third unit 300 will be described. However, as described above, the first unit 100, the second unit 200, and the third unit 300 each have the same configuration. The second unit 200 will be mainly described as a representative.

  As shown in FIG. 2 which is an enlarged view of the vicinity of the first connecting portion 130A of the first unit 100 and the second connecting portion 220A of the second unit 200 in FIG. 1, the second support portion 221 of the second connecting portion 220A is This is a steel tower having a truss structure formed by joining equilateral angle steels or steel pipes with bolts or the like. The second support portion 221 is configured to be freely divided into a plurality of members so as to be easily transported. As shown in FIG. 3, which is a front view of the second unit 200 in FIG. 1, a pair of second support portions 221 are disposed at both lateral ends of the temporary road TR formed by the second temporary road portion 210A. , And the second temporary road section 210A. The second support 221 is supported by a leg 226 at the lower end thereof. Note that the second support portion 221 may include a drive wheel so as to be able to run on its own. Further, as shown in FIG. 2, the first support 131 and the second support 221 of the first connecting portion 130 </ b> A are detachably connected to each other by a support 401.

  As shown in FIGS. 2 and 3, the second temporary road section 210 </ b> A forms a lower road type and a warren truss type bridge. At the end on the side of the second connecting portion 220A of the second temporary road portion 210A, there is provided a connecting groove 211 that opens downward. As described later, the connection groove 211 and the connection shaft 222 of the second support portion 221 are fitted to each other, so that the second temporary road portion 210A can be detachably attached to the second support portion 221 and rotate around the center axis of the connection shaft 222. It is supported rotatably. In addition, a wire connecting fitting 212 to which the wire 224 of the second elevating part 223 of the second connecting part 220A is detachably attached is provided at an end of the second temporary road part 210A on the side of the second connecting part 220A. The second temporary road portion 210A has a similar structure at the end of the second temporary road portion 210A on the side of the second connecting portion 230A.

  As shown in FIG. 2, the second temporary road portion 210A is divided into two in the extending direction of the temporary road TR and the sloping road SR formed by the second temporary road portion 210A, and the second temporary road portion 210A is divided into two. Are detachably connected to each other at a lower connecting portion 213 and an upper connecting portion 214. The second temporary road section 210A may not be divided, and may be divided into three or more sections, and the three or more divided second temporary road sections 210A may be detachably connected to each other.

  The second elevating part 223 of the second connecting part 220A is a winch that applies tension to the wire 224. The upper end of the second support 221 includes a slide pulley 225. The sliding pulley portion 225 slides along the extending direction of the temporary road TR formed by the second temporary road portion 210A while turning the wire 224 extending upward from the second elevating portion 223 downward by the pulley. It is possible. The lower end of the wire 224 folded downward by the sliding pulley portion 225 is detachably attached to the wire connection fitting 212 of the second temporary road portion 210A.

  As shown in FIG. 4, which is an enlarged view of the vicinity of the connection shaft 222 of the second support portion 221 and the connection groove portion 211 of the second temporary road portion 210A of the second unit 200 of FIG. 2, FIG. 3, and FIG. Of the connecting shaft 222 extends in the width direction of the temporary road TR in the second temporary road portion 210A, and can be slid in the width direction of the temporary road TR by the second connecting shaft support bracket 227. It is attached to the support 221. A spacer 227s, which is a plurality of metal plates, is appropriately disposed between the second support 221 and the connection shaft support 227. As shown in FIG. 3, the second support portion 221 rotates the pinion gear 228 that meshes with the rack gear 2221 on the outer peripheral surface of the connection shaft 222, thereby moving the connection shaft 222 in the width direction of the temporary road TR. It includes a reciprocating mechanism 229. As shown in FIG. 4, a stopper metal 215 is attached to the lower end of the connection groove 211 of the second temporary road section 210A so as to be freely opened and closed.

  The second temporary road portion 210A is also connected to the end of the second temporary road portion 210A on the side of the second connection portion 230A, and also to the connection groove of the end of the second temporary road portion 210A on the side of the second connection portion 220A. 211, the wire connection fitting 212, and the stopper metal fitting 215 have the same configuration. Also, the second support portion 231 and the second lifting / lowering portion 233 of the second connection portion 230A are connected to the connection shaft 222, the rack gear 2221, and the wire of the second support portion 221 and the second lifting / lowering portion 223 of the second connection portion 220A. 224, a sliding pulley portion 225, a leg portion 226, a connection shaft support bracket 227, a spacer 227s, a pinion gear 228, and a connection shaft advance / retreat mechanism 229.

  When the second temporary road portion 210A of the second unit 200 forms the temporary road TR, a tension is applied to the wire 224 by the second lifting / lowering portion 223, so that the second temporary portion in which the wire 224 is attached to the wire connection fitting 212 is provided. The end of the road portion 210A on the side of the second connecting portion 220A is raised so that the connecting groove 211 of the second temporary road portion 210A is located above the connecting shaft 222 of the second support portion 221. When the end of the second temporary road section 210A is lifted upward, the connection shaft advance / retreat mechanism 229 as shown by the broken line in FIG. 3 so that the second temporary road section 210A and the connection shaft 222 do not contact each other. Thereby, the connecting shaft 222 is retracted to the outside in the width direction of the temporary road TR.

  When the connecting groove portion 211 of the second temporary road portion 210A is located above the connecting shaft 22 of the second support portion 221, as shown by a solid line in FIG. 3, the connecting shaft 222 is moved by the connecting shaft advance / retreat mechanism 229 to move the temporary road TR. It is advanced inward in the width direction. As shown in FIGS. 2 and 4, the end of the second temporary road portion 210 </ b> A is lowered by the second elevating portion 223 such that the connection groove portion 211 and the connection shaft 222 are fitted to each other. Adjustment of the horizontal position of the connection groove 211 for fitting the connection groove 211 and the connection shaft 222 to each other is performed by sliding the slide pulley 225 as appropriate. As shown in FIG. 4, when the connection groove 211 and the connection shaft 222 are fitted to each other, the stopper metal 215 is closed. The adjustment of the inclination angle in the extending direction of the temporary road TR is performed by increasing or decreasing the number of the spacers 227s. The end of the second temporary road section 210A on the side of the second connection section 230A, the second support section 231 and the second elevating section 233 are also the ends of the second temporary road section 210A on the side of the second connection section 220A, By performing the same operation as the second support portion 221 and the second elevating portion 223, the second temporary road portion 210A of the second unit 200 forms the temporary road TR.

  On the other hand, as shown in FIG. 11, when the second temporary road portion 210A of the second unit 200 forms the sloping road SR, the second stopper portion 215 is formed with the second temporary road portion 210A forming the temporary road TR. Is opened, and the tension is applied to the wire 224 by the second elevating unit 223, so that the end of the second temporary road unit 210A on the side of the second connection unit 220A is connected to the connection groove 211 of the second temporary road unit 210A. The two support portions 221 are raised so as to be located above the connection shaft 22. When the end of the second temporary road portion 210A is lowered onto the road surface of the road R, the connecting shaft is connected as shown by a broken line in FIG. 3 so that the second temporary road portion 210A and the connecting shaft 222 do not contact each other. The connection shaft 222 is retracted to the outside in the width direction of the temporary road TR by the advance / retreat mechanism 229.

  When the connection shaft 222 is retracted to the outside in the width direction of the temporary road TR by the connection shaft advance / retreat mechanism 229, the second lifting / lowering portion 223 causes the end of the second temporary road portion 210A on the side of the second connection portion 220A. Is lowered to the road surface of the road R. The end of the second temporary road portion 210A on the side of the second connection portion 230A is rotated by a configuration corresponding to the connection groove 211 and the connection shaft 222 of the end of the second temporary road portion 210A on the side of the second connection portion 220A. Since it is freely supported, the end of the second temporary road portion 210A on the side of the second connecting portion 220A is lowered to the road surface of the road R, so that the second temporary road portion 210A forms a slope SR. The adjustment of the inclination angle in the extending direction of the slope SR is performed by increasing or decreasing the number of the spacers 227 s of the second support 231 arranged similarly to the second support 221. The inclination angle in the extending direction of the slope SR can be set to, for example, about 5 to 10%.

  In addition, at the boundary between the temporary road TR formed by the first temporary road portion 110A, the second temporary road portion 210A, and the third temporary road portion 310A and the slope SR, a road surface connecting member that smoothly connects the road surfaces to each other. May be arranged. In addition, at the boundary between the sloping road SR and the road R formed by the first temporary road portion 110A, the second temporary road portion 210A, and the third temporary road portion 310A, a road surface connecting member that smoothly connects the road surfaces to each other is provided. It may be arranged.

  With the end of the second temporary road section 210A lowered on the road surface of the road R by the second elevating section 223, the wire 224 is detached from the wire connection fitting 212, so that the second support section 221 and the second support section 221 are removed. The connection with the temporary road section 210A can be released. On the other hand, the wire 224 is attached to the wire connection fitting 212 in a state where the end of the second temporary road portion 210A is lowered on the road surface of the road R by the second elevating portion 223, so that the second pillar portion 221 is The second temporary road section 210A can be connected. The lifting and lowering of the end of the second temporary road section 210A and the reciprocation of the connecting shaft 222 may be performed by a hydraulic mechanism.

  As shown in FIG. 5 which is a perspective view of the second crane portion 240A of the second unit 200 of FIGS. 2, 3 and 1, the second crane portion 240A includes trolleys 241, 242, 243, 244, running rails 245, A saddle 246 and a girder 247 are provided. Each of the four trolleys 241, 242, 243, 244 can traverse along the girder 247 along the width direction of the temporary road TR while lifting the floor slab FS at four points. Each of both ends of the pair of girders 247 is connected by a pair of saddles 246 to form a girder. The saddle 246 is mounted between the second support portions 221 and 231, and is capable of traveling along a traveling rail 245 arranged on the lower surface of the second temporary road portion 210A along the extending direction of the temporary road TR.

  The second crane unit 240A includes, in addition to the floor slab FS, a first temporary road unit 110A separated from the first support members 121 and 131 and a third temporary road unit 310A separated from the third support members 321 and 331. While being lifted, it is moved along the extending direction of the temporary road TR. In addition, the second crane unit 240A moves along the extending direction of the temporary road TR while lifting the first support members 121 and 131 and the third support members 321 and 331 divided into a plurality of members. The second crane portion 240A is detachable from the second support portions 221 and 231, and is attached to the second support portions 221 and 231, for example, when the second crane portion 240A forms the temporary road TR. Further, the second crane unit 240A may be accommodated in the lower portions of the second support columns 221 and 231 and the second temporary road unit 210A. Further, the second crane section 240A may be attached to the second temporary road section 210A by suspending the traveling rail 245 from the lower surface of the second temporary road section 210A.

  The connection groove 111 and the wire connection fitting 212 of the first temporary road section 110A shown in FIG. 2 also have the same configuration as the connection groove 211 and the wire connection fitting 212 of the second temporary road section 210A described above. The first support 131, the connecting shaft 132, the first elevating unit 133, the wire 134, the sliding pulley 135, and the leg 136 of the first connecting unit 130A shown in FIG. It has the same configuration as the column 221, the connecting shaft 222, the second elevating unit 223, the wire 224, the sliding pulley 225, and the leg 226.

  The first temporary road section 110A and the third temporary road section 310A have the same configuration as the above-mentioned second temporary road section 210A. The first connecting portion 120A and the third connecting portions 320A and 330A also have the same configuration as the above-described second connecting portion 220A. The first support portion 121 and the third support portions 321 and 331 have the same configuration as the above-described second support portion 221. The first elevating unit 123 and the third elevating units 323 and 333 have the same configuration as the above-described second elevating unit 223. The first crane unit 140A and the third crane unit 340A have the same configuration as the above-described second crane unit 240A.

  Hereinafter, a floor slab replacement method using the temporary assembly bridge 1 of the present embodiment will be described. As shown in FIG. 1, a first installation step is performed. In the first installation step, one first connecting portion 130A of the first unit 100 and one second connecting portion 220A of the second unit 200 are connected, and the other second connecting portion 230A of the second unit 200 is connected to the second connecting portion 230A. One of the three units 300 is connected to the third connecting portion. In the first installation step, a temporary road TR is formed by the second temporary road section 210A of the second unit 200. In the first installation step, the road R and the second temporary road section 210A of the second unit 200 are formed by the first temporary road section 110A of the first unit 100 and the third temporary road section 310A of the third unit 300. A slope SR connecting the temporary road TR is formed.

  In the first installation step, first, the first support portions 121 and 131, the second support portions 221 and 231 and the third support portions 321 and 331 are installed. As described above, the position of the first support part 121 is substantially matched with the position of the pier P1, the position of the first support part 131 and the second support part 221 is substantially matched with the position of the pier P2, and the second support is provided. The positions of the portion 231 and the third support portion 321 are substantially matched with the position of the pier P3, and the position of the third support portion 331 is substantially matched with the position of the pier P4. The first support 131 and the second support 221 are connected by a support connection fitting 401, and the second support 231 and the third support 321 are connected by a support connection 401.

  The first support portions 121 and 131 and the first temporary road portion 110A are connected, the second support portions 221 and 231 and the second temporary road portion 210A are connected, and the third support portions 321 and 331 and the third temporary road. The part 310A is connected. The second elevating portions 223 and 233 of the second connecting portions 220A and 230A of the second unit 200 allow the second temporary road portion 210A of the second unit 200 to form the temporary road TR such that the second temporary road portion 210A forms the temporary road TR. The ends on the side of the second connecting portions 220A and 230A are raised. A temporary road in which the first temporary road section 110A of the first unit 100 is formed by the road R and the second temporary road section 210A of the second unit 200 by the first elevating section 133 of the first connecting section 130A of the first unit 100. The end of the first temporary road portion 110A on the side of the first connecting portion 130A is raised so as to form a slope SR connecting the TR. The third temporary road portion 310A of the third unit 300 is formed by the road R and the second temporary road portion 210A of the second unit 200 by the third elevating portion 323 of the third connecting portion 320A of the third unit 300. The end of the third temporary road section 310A on the side of the third connecting section 320A is raised so as to form a slope SR connecting the TR.

  As shown in FIG. 6, the first temporary road section 110A of the first unit 100, the second temporary road section 210A of the second unit 200, and the third temporary road section 310A of the third unit 300 installed in the first installation step. The first replacement step of replacing any one of the lower floor slabs FS is performed. In the example of FIG. 6, the floor slab FS in the section between the pier P2 and the pier P3 below the second temporary road portion 210A of the second unit 200 is replaced. The floor slab FS below the first temporary road section 110A of the first unit 100 or the third temporary road section 310A of the third unit 300 may be replaced.

  In the first replacement step, the floor slab FS is replaced using any one of the first crane part 140A of the first unit 100, the second crane part 240A of the second unit 200, and the third crane part 340A of the third unit 300. You. In the example of FIG. 6, the floor slab FS is replaced using the second crane unit 240A of the second unit 200. The first crane part 140A of the first unit 100 is removed from the first support parts 121 and 131, and the third crane part 340A of the third unit 300 is removed from the third support parts 321 and 331. During the period in which the first replacement process is performed after the completion of the first installation process, the vehicle that is going to travel on the road R can travel on the temporary road TR and the slope SR formed by the temporary assembly bridge 1. The road R is not substantially closed.

  After the first replacement step of replacing the slab FS in the section between the pier P2 and the pier P3, to perform the second replacement step of replacing the slab FS in the section between the pier P3 and the pier P4, A second installation step of installing the temporary assembly bridge 1 at another location is performed. During the period in which the second installation process is being performed, the vehicle that is going to pass through the road R cannot pass through the temporary road TR and the sloping road SR formed by the temporary assembly bridge 1, so that the road R is closed. . Therefore, the second installation process is performed during a period of low traffic volume on the road R, such as at night.

  As shown in FIG. 7, in the second installation step, the third elevating part 333 of the third connection part 330A that has not been connected to the second connection part 230A in the first installation step causes the third temporary installation of the third unit 300. The end of the third temporary road portion 310A on the side of the third connecting portion 330A is raised so that the road portion 310A forms the temporary road TR. The third crane portion 340A of the third unit 300 is attached to the third support portions 321 and 331.

  As shown in FIG. 8, in the second installation step, the first temporary portion separated from the first support portions 121 and 131 by the second crane portion 240A of the second unit 200 and the third crane portion 340A of the third unit 300. The road section 110A is moved to the vicinity of the section between the piers P4 and P5. The first temporary road portion 110A is divided into two at the lower connecting portion 113 and the upper connecting portion 114 similar to the lower connecting portion 213 and the upper connecting portion 214 of the second temporary road portion 210A, and the first temporary road is divided into two. The section 110A is moved by the second crane section 240A and the third crane section 340A. Also, after the column connecting fitting 401 is removed from between the first column 131 and the second column 221, the first column 121, 131 divided into a plurality of members for easy transport is formed. It is moved to the vicinity of the section between the piers P4 and P5 by the second crane part 240A and the third crane part 340A. When the first support portions 121 and 131 can move by driving wheels or the like, the first support portions 121 and 131 may move by self-travel.

  As shown in FIG. 9, first support portions 121 and 131 are provided. The position of the first support portion 121 is substantially matched with the position of the pier P4, and the position of the first support portion 131 is substantially matched with the position of the pier P5. The two divided first temporary road sections 110A are connected again at the lower connecting section 113 and the upper connecting section 114. While connecting the first support portions 121 and 131 and the first temporary road portion 110A again, the third connection portion 330A and the first connection portion 120A that were not connected to the second connection portion 230A in the first installation step are connected. Be linked. By connecting the third support portion 331 and the first support portion 121 with the support connection fitting 401, the third connection portion 330A and the first connection portion 120A are connected. Note that the third connecting portion 330A and the first connecting portion 130A may be connected.

  As shown in FIG. 10, the first temporary road section 110A of the first unit 100 is connected to the road R by the first elevating section 123 of the first connecting section 120A connected to the third connecting section 330A in the second installation step. The end on the side of the first connecting portion 120A of the first temporary road portion 110A is raised so as to form a slope SR connecting the temporary road TR formed by the third temporary road portion 310A of the three units 300. .

  As shown in FIG. 11, the second temporary road section 210A of the second unit 200 is connected to the road R by the second elevating section 223 of the second connecting section 220A connected to the first connecting section 130A in the first installation step. The end of the second temporary road portion 210A on the side of the second connecting portion 220A is lowered so as to form a slope SR connecting the temporary road TR formed by the third temporary road portion 310A of the third unit 300. Can be Thereby, the second installation step ends. In the second installation step, the end of the third temporary road section 310A on the side of the third connection section 330A is raised, the end of the first temporary road section 110A on the side of the first connection section 120A is raised, and the second The order in which the end of the temporary road portion 210A on the side of the second connecting portion 220A is lowered can be changed as described above, but the first temporary road portion 110A by the second crane portion 240A and the third crane portion 340A is changed. When movement is performed, the above sequence is preferred.

  As shown in FIG. 12, the second temporary road section 210A of the second unit 200, the third temporary road section 310A of the third unit 300, and the first temporary road section 110A of the first unit 100 are installed in the second installation step. A second replacement step of replacing any one of the lower floor slabs FS is performed. In the example of FIG. 12, the floor slab FS in the section between the piers P3 and P4 below the third temporary road section 310A of the third unit 300 is replaced. The floor FS below the second temporary road portion 210A of the second unit 200 or the first temporary road portion 110A of the first unit 100 may be replaced.

  In the second replacement step, the floor slab FS is replaced using any one of the second crane part 240A of the second unit 200, the third crane part 340A of the third unit 300, and the first crane part 140A of the first unit 100. You. In the example of FIG. 12, the floor slab FS is replaced using the third crane unit 340A of the third unit 300. The second crane part 240A of the second unit 200 is removed from the second support parts 221 and 231, and the first crane part 140A of the first unit 100 is removed from the first support parts 121 and 131. During the period in which the second replacement process is performed after the completion of the second installation process, the vehicle that is going to pass through the road R can pass through the temporary road TR and the slope SR formed by the temporary assembly bridge 1. The road R is not substantially closed.

  After the second replacement step of replacing the floor FS in the section between the pier P3 and the pier P4, in order to perform the third replacement step of replacing the floor FS in the section between the pier P4 and the pier P5, A third installation step of installing the temporary assembly bridge 1 at another location is performed. During the period in which the third installation process is being performed, the vehicle that is going to pass through the road R cannot pass through the temporary road TR and the sloping road SR formed by the temporary assembly bridge 1, so the road R is closed. . Therefore, the third installation step is performed during a period when traffic on the road R is low, such as at night.

  As shown in FIG. 13, in the third installation step, the first elevating part 133 of the first connection part 130A that has not been connected to the third connection part 330A in the second installation step causes the first temporary installation of the first unit 100. The end on the side of the first connecting portion 130A of the first temporary road portion 110A is raised so that the road portion 110A forms the temporary road TR. The first crane portion 140A of the first unit 100 is attached to the first support portions 121 and 131.

  As shown in FIG. 14, in the third installation step, the second crane part 340A of the third unit 300 and the first crane part 140A of the first unit 100 separate the second temporary parts 221 and 231 separated from the second support parts 221 and 231. The road section 210A is moved to the vicinity of the section between the pier P5 and the pier P6 shown in FIG. The second temporary road section 210A is divided into two parts at the lower connecting part 213 and the upper connecting part 214, and the divided second temporary road part 210A is moved by the third crane part 340A and the first crane part 140A. Also, after the column connecting fitting 401 is removed from between the second column portion 231 and the third column portion 321, the second column portions 221 and 231 divided into a plurality of members for easy transportation are provided. It is moved to the vicinity of the section between the piers P5 and P6 by the three crane unit 340A and the first crane unit 140A. When the second support portions 221 and 231 can move by driving wheels or the like, the second support portions 221 and 231 may move by self-propelled movement.

  As shown in FIG. 15, the second support portions 221 and 231 are installed. The position of the second support 221 is substantially matched with the position of the pier P5, and the position of the second support 231 is substantially matched with the position of the pier P6. The second divided temporary road portion 210A is connected again at the lower connecting portion 213 and the upper connecting portion 214. While connecting the second support portions 221 and 231 and the second temporary road portion 210A again, the first connection portion 130A and the second connection portion 220A that were not connected to the third connection portion 330A in the second installation process are connected. Be linked. When the first support 131 and the second support 221 are connected by the support connection fitting 401, the first connection 130A and the second connection 220A are connected. Note that the first connecting portion 130A and the second connecting portion 230A may be connected.

  As shown in FIG. 16, the second temporary road portion 210A of the second unit 200 is connected to the road R by the second elevating portion 223 of the second connecting portion 220A connected to the first connecting portion 130A in the third installation step. The end on the side of the second connecting portion 220A of the second temporary road portion 210A is raised so as to form a slope SR connecting the temporary road TR formed by the first temporary road portion 110A of one unit 100. .

  As shown in FIG. 17, the third temporary road portion 310A of the third unit 300 is connected to the road R by the third lifting / lowering portion 323 of the third connection portion 320A connected to the second connection portion 230A in the second installation step. The end of the third temporary road portion 310A on the side of the third connecting portion 320A is lowered so as to form a slope SR connecting the temporary road TR formed by the first temporary road portion 110A of the first unit 100. Can be Thus, the third installation step ends. Note that, in the third installation step, the change in the order in which the end of the third temporary road section 310A on the side of the third connection section 330A is performed is the same as that in the second installation step.

  As shown in FIG. 18, the third temporary road section 310A of the third unit 300, the first temporary road section 110A of the first unit 100, and the second temporary road section 210A of the second unit 200 installed in the third installation step. A third replacement step of replacing any one of the lower floor slabs FS is performed. In the example of FIG. 18, the floor slab FS in the section between the piers P4 and P5 below the first temporary road section 110A of the first unit 100 is replaced. The floor FS below the third temporary road section 310A of the third unit 300 or the second temporary road section 210A of the second unit 200 may be replaced.

  In the third replacement step, the floor slab FS is replaced using one of the third crane part 340A of the third unit 300, the first crane part 140A of the first unit 100, and the second crane part 240A of the second unit 200. You. In the example of FIG. 18, the floor slab FS is replaced using the first crane unit 140A of the first unit 100. The third crane portion 340A of the third unit 300 is removed from the third support portions 321 and 331, and the second crane portion 240A of the second unit 200 is removed from the second support portions 221 and 231. During the period in which the third replacement step is being performed after the completion of the third installation step, the vehicle that is going to pass through the road R can pass through the temporary road TR and the slope SR formed by the temporary assembly bridge 1. The road R is not substantially closed.

  After the third replacement step of replacing the slab FS in the section between the pier P4 and the pier P5, to perform the fourth replacement step of replacing the slab FS in the section between the pier P5 and the pier P6, A fourth installation step of installing the temporary assembly bridge 1 at another location is performed. During the period in which the fourth installation process is being performed, the vehicle that is going to pass through the road R cannot pass through the temporary road TR and the sloping road SR formed by the temporary assembly bridge 1, so that the road R is closed. . Therefore, the fourth installation process is performed during a period when traffic on the road R is low, such as at night.

  As shown in FIG. 19, in the fourth installation step, the second elevating part 233 of the second connection part 230A that has not been connected to the first connection part 130A in the third installation step causes the second temporary installation of the second unit 200. The end of the second temporary road portion 210A on the side of the second connecting portion 230A is raised so that the road portion 210A forms the temporary road TR. The second crane part 240A of the second unit 200 is attached to the second support parts 221 and 231.

  As shown in FIG. 20, in the fourth installation step, the first temporary crane part 140A of the first unit 100 and the second temporary crane part 240A of the second unit 200 separate the third temporary parts 321 and 331 from the third support parts 321 and 331. The road section 310A is moved to the vicinity of the section between the piers P6 and P7. The third temporary road portion 310A is divided into two at the lower connecting portion 313 and the upper connecting portion 314 similar to the lower connecting portion 213 and the upper connecting portion 214 of the second temporary road portion 210A, and the third temporary road is divided into two. The section 310A is moved by the first crane section 140A and the second crane section 240A. In addition, after the pillar connection fitting 401 is removed from between the third pillar portion 331 and the first pillar portion 121, the third pillar portions 321 and 331 divided into a plurality of members for easy transportation are provided. It is moved to the vicinity of the section between the piers P6 and P7 by the first crane part 140A and the second crane part 240A. When the third support portions 321 and 331 can move by driving wheels or the like, the third support portions 321 and 331 may move by self-travel.

  As shown in FIG. 21, third support portions 321 and 331 are provided. The position of the third support 321 is made substantially coincident with the position of the pier P6, and the position of the third support 331 is made substantially coincident with the position of the pier P7. The two divided third temporary road sections 310A are connected again at the lower connecting section 313 and the upper connecting section 314. While connecting the third support portions 321 and 331 and the third temporary road portion 310A again, the second connection portion 230A and the third connection portion 320A that were not connected to the first connection portion 130A in the third installation process are connected. Be linked. The second connection part 230A and the third connection part 320A are connected by connecting the second support part 231 and the third support part 321 by the support connection fitting 401. Note that the second connecting portion 230A and the third connecting portion 330A may be connected.

  As shown in FIG. 22, the third temporary road section 310A of the third unit 300 is connected to the road R by the third lifting section 323 of the third connection section 320A connected to the second connection section 230A in the fourth installation step. The end of the third temporary road portion 310A on the side of the third connection portion 320A is raised so as to form a slope SR connecting the temporary road TR formed by the second temporary road portion 210A of the two units 200. .

  As shown in FIG. 23, the first temporary road portion 110A of the first unit 100 is connected to the road R by the first lifting / lowering portion 123 of the first connection portion 120A connected to the third connection portion 330A in the third installation step. The end of the first temporary road portion 110A on the side of the first connecting portion 120A is lowered so as to form a slope SR connecting the temporary road TR formed by the second temporary road portion 210A of the second unit 200. Can be Thus, the fourth installation step ends. Note that, in the fourth installation step, the change in the order in which the end of the first temporary road section 110A on the side of the first connection section 130A is changed is the same as that in the third installation step.

  As shown in FIG. 23, the order of connection of the first unit 100, the second unit 200, and the third unit 300 after the end of the fourth installation step is the order of connection after the end of the first installation step shown in FIG. Return to the same as. Therefore, by repeating the first to fourth installation steps after the first installation step, the first unit 100, the second unit 200, and the third unit 300 are changed while changing the section in which the floor slab FS is exchanged. Can be used to replace the floor slab FS of the road R.

  In this embodiment, each of the first unit 100, the second unit 200, and the third unit 300 is divided into a plurality of first temporary road sections 110A, a second temporary road section 210A, a third temporary road section 310A, and a plurality of pairs. May be constituted by the first connecting portions 120A and 130A, the second connecting portions 220A and 230A, and the third connecting portions 320A and 330A. For example, as shown in FIG. 24, the first unit 100 is divided into a combination of two first temporary road portions 110A and first connection portions 120A and 130A and a combination of the first temporary road portion 110B and first connection portions 120B and 130B. Are connected to each other, and the second unit 200 is combined with the combination of the two second temporary road portions 210A and the second connection portions 220A and 230A and the combination of the second temporary road portions 210B and the second connection portions 220B and 230B. Are connected to each other, and the third unit 300 is formed by combining the two third temporary road sections 310A and the third coupling sections 320A and 330A and the combination of the third temporary road sections 310B and the third coupling sections 320B and 330B. May be connected to each other to form a temporary assembly bridge 2. The second unit 200 has a second crane section 240A below the second temporary road section 210A and a second crane section 240B below the second temporary road section 210B. By performing the first installation step to the fourth installation step in the same manner as the temporary assembly bridge 2, a wide range of the floor slab FS can be replaced with the same number of steps.

  According to the present embodiment, the temporary assembly bridge 1 includes the first unit 100 and the second unit 100 that form the temporary road TR extending along the extending direction of the road R above the road R on which the floor slab FS is replaced. A unit 200 and a third unit 300 are provided. Accordingly, when the temporary assembly bridge 1 is installed, it is not necessary to keep the road R closed during the work of replacing the floor slab FS. Further, the first unit 100, the second unit 200, and the third unit 300 have a first temporary road section 110A, a second temporary road section 210A, and a third temporary road section 310A, respectively, that form the temporary road TR, and It has first connecting parts 120A and 130A, second connecting parts 220A and 230A, and third connecting parts 320A and 330A, which are detachably connectable. By changing the order in which the first unit 100, the second unit 200, and the third unit 300 are connected by the first connecting portions 120A, 130A, the second connecting portions 220A, 230A, and the third connecting portions 320A, 330A, the first Each of the temporary road 110A, the second temporary road 210A, and the third temporary road 310A forms a temporary road TR and a slope SR that connects the road R and the temporary road TR. Accordingly, the temporary assembly bridge 1 is moved while changing the order in which the first unit 100, the second unit 200, and the third unit 300 are connected in accordance with the change in the position where the floor slab FS is exchanged. The time for closing the road R for moving the temporary assembly bridge 1 in accordance with the change of the position where the plate FS is exchanged can be reduced. Therefore, as a whole, it is possible to reduce the time for closing the road R due to the work of replacing the floor slab FS. In other words, floor slabs can be replaced while minimizing the number of days and hours of traffic closure and lane regulation.

  Further, according to the present embodiment, each of the first connecting portions 120A and 130A is connected to the first temporary support road 121, 131 along the first temporary support road 121, 131 along the first support support 121, 131. The first connecting portions 120A and 130A include end portions on the side of the first connecting portions 120A and 130A. The first connecting portions 120A and 130A can move up and down, and the second connecting portions 220A and 230A and the third connecting portions 320A and 330A have the same configuration. Including. Thereby, when the temporary assembly bridge 1 is installed, the first connecting parts 120A, 130A, the second connecting parts 220A, 230A and the third connecting parts 320A, 330A are connected to each other, and the first elevating parts 123, 133, The end of the first temporary road portion 110A, the second temporary road portion 210A or the third temporary road portion 310A is moved up and down by the second elevating portions 223, 233 or the third elevating portions 323, 333, so that the temporary road TR and the road R are lifted. A sloping road SR connecting the road and the temporary road TR can be formed. On the other hand, when the temporary assembly bridge 1 moves, the first unit 100, the second unit 200, and the third unit 300 are changed while the order in which the first unit 100, the second unit 200, and the third unit 300 are connected is changed. While moving, the first temporary road section 110A, the second temporary road section 210A or the third temporary road section 310A is moved by the first lifting sections 123, 133, the second lifting sections 223, 233 or the third lifting sections 323, 333. The slope SR connecting the temporary road TR and the road R and the temporary road TR can be re-formed by raising and lowering the end. Therefore, the efficiency of installation and movement of the temporary assembly bridge 1 can be improved.

  Further, according to the present embodiment, the first support portions 121 and 131 and the first temporary road portion 110A are detachably connected to each other, and the second support portions 221 and 231, the second temporary road portion 210A, and the third temporary road portion 210A are connected to each other. The support portions 321 and 331 and the third temporary road portion 310A have the same configuration. Accordingly, when the temporary assembly bridge 1 is moved by the first unit 100, the second unit 200, and the third unit 300, the second support is provided between the first support portions 121 and 131 and the first temporary road portion 110A. By separating between the parts 221 and 231 and the second temporary road part 210A or between the third support parts 321 and 331 and the third temporary road part 310A, the first support parts 121 and 131 and the first temporary road are separated. Since the sections 110A, the second support sections 221 and 231, the second temporary road section 210A, the third support sections 321 and 331, and the third temporary road section 310A are each easily moved, the temporary assembly bridge 1 is moved. Efficiency can be improved.

  Further, according to the present embodiment, the first unit 100 includes the floor FS, the second temporary road portion 210A separated from the second support portions 221 and 231, and the third support below the first temporary road portion 110A. The first crane section 140A capable of moving along the extending direction of the temporary road TR formed by the first temporary road section 110A while lifting the third temporary road section 310A separated from the sections 321 and 331. Since the second unit 200 and the third unit 300 have the same configuration, the exchange efficiency of the floor FS and the movement efficiency of the temporary assembly bridge 1 can be improved by the first crane unit 140A and the like. .

  According to the present embodiment, standardized members can be used, can be stored and diverted, can be easily transported and assembled, and cost can be reduced. Further, according to the present embodiment, the construction cycle of moving, assembling, dismantling, and replacing the slab of the temporary assembly bridge 1 can be standardized and made more efficient, and the construction period can be shortened. Further, according to the present embodiment, the floor FS of the road R is replaced under the temporary road TR formed by the first temporary road section 110A and the like, so that the work of replacing the floor FS is performed by rainfall and snowfall. There is an advantage that it is hardly affected by the weather. In addition, the first unit 100 and the like of the present embodiment are provided with a connecting groove 111 and a wire connecting metal 112 for an existing emergency assembly bridge used in the event of a disaster, and connect the first pillars 121 and 131 manufactured separately. By attaching the separately manufactured first crane part 140A to the first support parts 121, 131 or the lower surface of the existing emergency assembly bridge, it is possible to relatively easily configure. Therefore, since the existing emergency assembly bridge is modified and used, the period until development and commercialization can be shortened.

  As described above, the embodiments of the present invention have been described. However, the present invention is not limited to the above embodiments, but may be embodied in various forms.

  1, 2, temporary assembly bridge, 100 first unit, 110A, 110B first temporary road, 111 connection groove, 112 wire connection, 113 lower connection, 114 upper connection, 120A, 120B , 130A, 130B: first connecting portion, 121, 131: first supporting portion, 123, 133: first elevating portion, 132: connecting shaft, 133: first elevating portion, 134: wire, 135: sliding pulley portion 136: leg, 140A: first crane, 200: second unit, 210A, 210B: second temporary road, 211: connecting groove, 212: wire connecting bracket, 213: lower connecting part, 214: upper connecting Parts, 215: stopper metal fittings, 220A, 220B, 230A, 230B: second connecting part, 221, 231: second support part, 222: connecting shaft, 222l: rack gear, 223 233: second lifting / lowering portion, 224: wire, 225: sliding pulley portion, 226: leg portion, 227: connecting shaft support bracket, 227s: spacer, 228: pinion gear, 229: connecting shaft advance / retreat mechanism, 240A, 240B ... Second crane part, 241,242,243,244 ... Trolley, 245 ... Running rail, 246 ... Saddle, 247 ... Girder, 300 ... Third unit, 310A, 310B ... Third temporary road part, 313 ... Lower connecting part Reference numeral 314: Upper connection part, 320A, 320B, 330A, 330B: Third connection part, 321, 331: Third support part, 323, 333: Third elevating part, 340A: Third crane part, 401: Support connection fitting , TR: temporary road, SR: slope, FS: floor slab, R: road, P1, P2, P3, P4, P5, P6, P7 ... pier.

Claims (8)

A first unit, a second unit, and a third unit that form a temporary road extending along the direction in which the road is extended above the road on which the floor slab is replaced,
The first unit comprises:
A first temporary road section forming the temporary road;
At both ends of the temporary road formed by the first temporary road portion in the extending direction of the temporary road, each of the second connection portion of the second unit and the third connection portion of the third unit is detachably connected. A possible first connection,
Has,
The second unit comprises:
A second temporary road section forming the temporary road;
At both ends in the extending direction of the temporary road formed by the second temporary road portion, the first connection portion of the first unit and the third connection portion of the third unit are detachably attached. The second connecting portion connectable to
Has,
The third unit comprises:
A third temporary road section forming the temporary road,
At both ends in the extending direction of the temporary road formed by the third temporary road section, the first connection section of the first unit and the second connection section of the second unit are detachable. The third connecting portion connectable to
Has,
One of the first connection portions of the first unit is connected to one of the second connection portions of the second unit, and the other one of the second connection portion and the third unit of the second unit is connected to one another. When the third connection portion is connected,
The second temporary road section of the second unit forms the temporary road, and the first temporary road section of the first unit and the third temporary road section of the third unit are connected to the road and the second temporary road section. Forming a slope connecting the temporary road formed by the second temporary road section of the unit;
The second connection portion of the second unit is connected to the third connection portion of the third unit, and the third connection portion of the third unit and one of the first units are connected to each other. When the first connecting portion is connected,
The third temporary road section of the third unit forms the temporary road, and the second temporary road section of the second unit and the first temporary road section of the first unit are connected to the road and the third temporary road section. Forming the slope connecting the temporary road formed by the third temporary road section of the unit;
One third connection portion of the third unit is connected to one first connection portion of the first unit, and the other first connection portion of the first unit and one of the second units are connected to each other. When the second connecting portion is connected,
The first temporary road portion of the first unit forms the temporary road, and the third temporary road portion of the third unit and the second temporary road portion of the second unit are connected to the road and the first temporary road. A temporary assembly bridge that forms the slope that connects the temporary road formed by the first temporary road section of the unit. Each of the first connecting portions is
A first support portion erected on the road;
A first elevating unit that can elevate and lower an end of the first temporary road unit on the side of the first connecting unit along the first support unit;
Including
Each of the second connecting portions is
A second support portion erected on the road;
A second elevating unit capable of elevating and lowering an end of the second temporary road unit on the side of the second connecting unit along the second support unit;
Including
Each of the third connecting portions is
A third support portion erected on the road;
A third elevating unit capable of elevating and lowering an end of the third temporary road unit on the side of the third connecting unit along the third pillar unit;
The temporary assembly bridge according to claim 1, comprising: The first pillar portion and the first temporary road portion are detachably connected to each other,
The second support portion and the second temporary road portion are detachably connected to each other,
The temporary assembly bridge according to claim 2, wherein the third support portion and the third temporary road portion are detachably connected to each other. The first unit is disposed below the first temporary road portion, the floor, the second temporary road portion separated from the second support portion, and the third temporary road separated from the third support portion. A first crane portion capable of moving along a direction in which the temporary road formed by the first temporary road portion extends while lifting the portion.
The second unit is located below the second temporary road section, the floor, the first temporary road section separated from the first support section, and the third temporary road separated from the third support section. A second crane portion that can be moved along the extending direction of the temporary road formed by the second temporary road portion while lifting the portion,
The third unit is disposed below the third temporary road section, the floor, the first temporary road section separated from the first support section, and the second temporary road separated from the second support section. 4. The temporary assembly bridge according to claim 3, further comprising a third crane portion that can be moved along an extending direction of the temporary road formed by the third temporary road portion while lifting the portion. 5. A first unit, a second unit, and a third unit that form a temporary road extending along the direction in which the road is extended above the road on which the floor slab is replaced,
The first unit comprises:
A first temporary road section forming the temporary road;
At both ends of the temporary road formed by the first temporary road portion in the extending direction of the temporary road, each of the second connection portion of the second unit and the third connection portion of the third unit is detachably connected. A possible first connection,
Has,
The second unit comprises:
A second temporary road section forming the temporary road;
At both ends in the extending direction of the temporary road formed by the second temporary road portion, the first connection portion of the first unit and the third connection portion of the third unit are detachably attached. The second connecting portion connectable to
Has,
The third unit comprises:
A third temporary road section forming the temporary road,
At both ends in the extending direction of the temporary road formed by the third temporary road section, the first connection section of the first unit and the second connection section of the second unit are detachable. The third connecting portion connectable to
A floor slab replacement method using a temporary assembly bridge having
One of the first connection portions of the first unit is connected to one of the second connection portions of the second unit, and the other one of the second connection portion and the third unit of the second unit is connected to one another. Connecting the third connecting portion to the second temporary road portion of the second unit to form the temporary road, the first temporary road portion of the first unit and the third temporary road portion of the third unit; A first installation step of forming a slope on a road section that connects the road and the temporary road formed by the second temporary road section of the second unit;
The first temporary road section of the first unit installed in the first installation step, the second temporary road section of the second unit, and the lower part of the third temporary road section of the third unit. A first replacement step of replacing the floor slab;
After the first replacement step, the connection between the one first connection portion of the first unit and the second connection portion of one of the second units is separated, and the third connection portion of the third unit is separated from the third connection portion. Connecting the connecting portion to the first connecting portion of one of the first unit and the other of the first unit, forming the temporary road in the third temporary road portion of the third unit, A second temporary road portion and a second temporary road portion of the first unit, the second temporary road portion forming the slope connecting the road and the temporary road formed by the third temporary road portion of the third unit; Installation process,
The second temporary road section of the second unit installed in the second installation step, the third temporary road section of the third unit, and the lower part of any of the first temporary road section of the first unit. A second replacement step of replacing the floor slab. Each of the first connecting portions is
A first support portion erected on the road;
A first elevating unit that can elevate and lower an end of the first temporary road unit on the side of the first connecting unit along the first support unit;
Including
Each of the second connecting portions is
A second support portion erected on the road;
A second elevating unit capable of elevating and lowering an end of the second temporary road unit on the side of the second connecting unit along the second support unit;
Including
Each of the third connecting portions is
A third support portion erected on the road;
A third elevating unit capable of elevating and lowering an end of the third temporary road unit on the side of the third connecting unit along the third pillar unit;
Including
In the second installation step,
The third elevating portion of the third connecting portion that has not been connected to the second connecting portion in the first installation step causes the third temporary road portion of the third unit to form the temporary road. Raising the end of the third temporary road portion on the side of the third connecting portion,
The first elevating section of the first connection section connected to the third connection section in the second installation step causes the first temporary road section of the first unit to be connected to the road and the third section of the third unit. 3 raising an end of the first temporary road portion on the side of the first connecting portion so as to form the slope connecting the temporary road formed by the temporary road portion,
By the second elevating part of the second connecting part connected to the first connecting part in the first installation step, the second temporary road part of the second unit is connected to the road and the third unit of the third unit. 6. The end of the second temporary road section on the side of the second connection section so as to form the slope connecting the temporary road formed by the third temporary road section, 6. Floor slab replacement method. The first pillar portion and the first temporary road portion are detachably connected to each other,
The second support portion and the second temporary road portion are detachably connected to each other,
The third support portion and the third temporary road portion are detachably connected to each other,
In the second installation step, after the first support section and the first temporary road section are separated, the first installation step is performed while the first support section and the first temporary road section are connected again. The floor slab replacement method according to claim 6, wherein the third connecting portion not connected to the second connecting portion is connected to the first connecting portion. The first unit is provided below the first temporary road portion, the floor, the second temporary road portion separated from the second support portion, and the third temporary road separated from the third support portion. A first crane portion that can be moved along the extending direction of the temporary road formed by the first temporary road portion while lifting the portion,
The second unit is disposed below the second temporary road section, the floor, the first temporary road section separated from the first support section, and the third temporary road separated from the third support section. A second crane portion capable of moving along the extending direction of the temporary road formed by the second temporary road portion while lifting the portion,
The third unit is disposed below the third temporary road portion, the floor, the first temporary road portion separated from the first support portion, and the second temporary road separated from the second support portion. A third crane unit that can be moved along the extending direction of the temporary road formed by the third temporary road unit while lifting the unit,
In the first replacement step, the floor slab is replaced using any one of the first crane unit of the first unit, the second crane unit of the second unit, and the third crane unit of the third unit. And
In the second installation step, after the first temporary road section separated from the first support section is moved by the second crane section of the second unit and the third crane section of the third unit, The third connecting portion and the first connecting portion, which were not connected to the second connecting portion in the first installation step, while connecting the first support portion and the first temporary road portion again. Concatenate,
In the second replacement step, the floor slab is replaced using any one of the second crane part of the second unit, the third crane part of the third unit, and the first crane part of the first unit. The floor slab replacement method according to claim 7, which is performed.

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