JP7299059B2 - Temporary scaffolding and method of constructing temporary scaffolding - Google Patents

Description

TECHNICAL FIELD The present invention relates to a temporary scaffolding and a method for constructing a temporary scaffold, and more particularly, to a pile erected in a water area having an anticorrosion layer, the temporary scaffolding is installed at a desired height position while avoiding damage to the anticorrosion layer. It relates to a temporary scaffolding that can be built and a method of building a temporary scaffolding.

A water structure such as a pier has a structure in which a concrete superstructure is supported on the upper ends of a plurality of piles erected in a water area. A temporary scaffold must be constructed between the lower surface of the upper structure and the water surface when repairing the lower surface of the upper structure or the joints between the upper structure and piles. Therefore, conventionally, various temporary scaffolds installed on piles have been proposed (see, for example, Patent Document 1).

In the invention described in Patent Document 1, the pile-side fixing body is wound around the outer periphery of the pile and fixed. Next, the fixing member main body provided in the scaffolding unit that moves on the water surface by the floating body is wrapped around the outside of the pile side fixing body, the both ends of the fixing member main body are connected, and the wedge part of the pile side fixing body and the fixing member main body are connected. and the engagement grooves are fitted to each other to fix the base end side of the scaffold board to the outer periphery of the pile. Next, the movable ring is fitted to the outside of the pile so that it can move up and down, and then the movable ring is raised by the unfolding means and the folded scaffolding board is unfolded to a horizontal position. Then, when the movable ring is fixed to the stake, the installation of the temporary scaffolding is completed.

In general, piles erected in a water area are provided with anti-corrosion layers from the vicinity of the water surface to the height position of the lower surface of an upper structure to prevent corrosion of the piles due to seawater. Since the anticorrosion layer is made of a synthetic resin or the like, it is relatively easily damaged. Therefore, when a temporary scaffold is installed on the anticorrosion layer, the anticorrosion layer may be damaged. Therefore, the position where the temporary scaffolding can be installed is limited to a position near the water surface avoiding the anticorrosion layer, and the temporary scaffolding may not be installed at a desired height position.

In addition, in the invention described in Patent Document 1, since the scaffolding unit is heavy, the scaffolding unit is moved by floating it on the surface of the water using a floating body. It is difficult to build. Therefore, for example, when the height from the water surface to the lower surface of the upper structure is high, workers may not be able to build a temporary scaffolding at a height that reaches the lower surface of the upper structure. Further, the work of connecting the pile-side fixing body and the fixing member main body described in Patent Document 1 is greatly affected by waves and swells, so workability is poor.

JP 2017-57615 A

It is an object of the present invention to provide a temporary scaffolding and a method for constructing a temporary scaffold that can construct a temporary scaffold at a desired height position while avoiding damage to the anticorrosion layer for piles set up in a water area having an anticorrosion layer. to do.

In order to achieve the above object, the temporary scaffolding of the present invention is a temporary scaffold fixed to a pile erected in a water area. a fixing member, a plurality of upper pressing members provided on the inner peripheral side of the fixing member, and a plurality of support members having one ends fixed to the fixing member and extending radially about the pile, respectively. a supporting leg extending downward with an upper end connected to the supporting member; a lower pressing member provided at the lower end of each of the supporting legs; and a scaffolding board supported by the plurality of supporting members At least each of the upper pressing members and the lower pressing members has a non-metallic soft cushioning material on the inner peripheral surface that is pressed against the outer peripheral surface of the pile. a winding unit in which the fixing member and the plurality of upper pressing members are integrated; a plurality of overhanging scaffolding units in which the supporting member, the supporting leg and the lower pressing member are integrated; It is separable from the scaffold board, the fixing member of the winding unit is wound around the outer periphery of the pile and fixed, and each of the upper pressing members is pressed against the outer peripheral surface of the pile, The support members of each of the overhanging scaffolding units are separately fixed to the fixing members fixed to the piles, and the lower pressing members of each of the overhanging scaffolding units are separately attached to the outer peripheral surfaces of the piles. Each of the overhanging scaffolding units is separately fixed to the piles by being pressed against the piles, and the scaffolding plate is attached to the support members of the plurality of overhanging scaffolding units fixed to the piles. The temporary scaffolding is constructed with respect to the piles by supporting the piles .

The temporary scaffolding construction method of the present invention is a temporary scaffolding construction method in which a temporary scaffolding is constructed on a pile erected in a water area having an anticorrosion layer in a predetermined upper and lower range of the outer peripheral surface, in which a plurality of divided bodies , a plurality of upper pressing members provided on the inner peripheral side of the fixing member, and one end fixed to the fixing member and extending radially around the pile a plurality of supporting members present; supporting legs each having an upper end connected to each of the supporting members and extending downward; a lower pressing member provided at a lower end of each of the supporting legs; and a scaffolding plate supported by the pile, and at least each of the upper pressing members among the upper pressing members and the lower pressing members is on the inner peripheral surface pressed against the outer peripheral surface of the pile A winding unit having a non-metallic soft cushioning material, in which the fixing member and the plurality of upper pressing members are integrated, and the supporting member, the supporting legs, and the lower pressing member are integrated. The separable temporary scaffold is used for a plurality of overhanging scaffolding units and the scaffolding plate , and the fixing member of the winding unit is annularly wound around the outer periphery of the pile and fixed, and the upper pressing A member is pressed against the outer peripheral surface of the pile, and the support members of each of the overhanging scaffolding units are separately fixed to the fixing members fixed to the piles, so that each of the overhanging scaffolding units Each of the overhanging scaffolding units is separately fixed to the pile by pressing the lower pressing member separately against the outer peripheral surface of the pile, and the anticorrosion layer has the buffer The temporary scaffolding is constructed on the piles by pressing the material against the piles and supporting the scaffolding boards on the support members of the plurality of overhanging scaffolding units fixed to the piles. and

According to the present invention, the fixing member of the temporary scaffolding is annularly wound around the outer periphery of the pile, the upper pressing member and the lower pressing member are pressed against the outer peripheral surface of the pile, and the anticorrosion layer is made of non-metallic material. A soft cushioning material made of As a result, the temporary scaffolding can be stably fixed while avoiding damage to the anticorrosion layer even at the position where the anticorrosion layer of the pile is provided.

FIG. 2 is an explanatory diagram illustrating a state in which the temporary scaffolding is built on piles in an embodiment of the temporary scaffolding of the present invention, viewed from above. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1; 1. It is explanatory drawing which illustrates the state which wound only the winding unit of the temporary scaffolding of FIG. 1 on the pile by top view. 4 is a cross-sectional view taken along line BB of FIG. 3; FIG. FIG. 4 is an explanatory diagram illustrating a state in which an overhanging scaffolding unit is attached to the winding unit of FIG. 3 as viewed from above; It is explanatory drawing which illustrates the state which installed multiple temporary scaffolds of FIG. 1 in the up-down direction by sectional view. 1. It is explanatory drawing which illustrates the state which bridged the connection scaffold board between the temporary scaffolds of FIG. 1 by top view. 1. It is explanatory drawing which illustrates the state which built the temporary scaffolding of FIG. 1 which changed the winding unit on another pile with a pile diameter different from the pile of FIG. 1 by top view. It is explanatory drawing which illustrates another embodiment of the temporary scaffolding of this invention by top view. FIG. 10 is a cross-sectional view taken along line EE of FIG. 9;

Hereinafter, the temporary scaffolding and the construction method of the temporary scaffolding of the present invention will be described based on the embodiments shown in the drawings.

As illustrated in FIGS. 1 and 2, the temporary scaffolding 1 of the present invention is installed by fixing to piles 20 such as steel pipe piles erected in a water area. In general, a pile 20 erected in a water area is provided with an anti-corrosion layer 21 in a predetermined vertical range near the water surface to prevent the pile 20 from being corroded by seawater. As the anticorrosion layer 21, for example, the pile 20 is coated with a synthetic resin such as polyethylene or polyurethane, or the petrolatum anticorrosion tape wound around the pile 20 is covered with a fiber reinforced plastic (FRP) cover. The temporary scaffolding 1 of the present invention is specially adapted for fixing to piles 20 having an anticorrosion layer 21 .

The temporary scaffolding 1 includes an annular fixing member 3 wound around the outer periphery of the pile 20, a plurality of upper pressing members 4 provided on the inner peripheral side of the fixing member 3, and one end fixed to the fixing member 3. a plurality of support members 8; support legs 9 extending downward with upper ends connected to the support members 8; lower pressing members 10 provided at the lower ends of the support legs 9; and a scaffold board 13 supported by the support member 8 .

The temporary scaffolding 1 of this embodiment includes a winding unit 2 in which a fixing member 3 and a plurality of upper pressing members 4 are integrated, and a plurality of supporting members 8, supporting legs 9 and lower pressing members 10 in which a plurality of supporting members 8 and 9 are integrated. The overhanging scaffolding unit 7 and a plurality of scaffolding boards 13 are separable.

In the temporary scaffolding 1 of the present invention, among the upper pressing members 4 and the lower pressing members 10, at least each of the upper pressing members 4 has a non-metallic material on the inner peripheral surface that is pressed against the outer peripheral surface of the pile 20. of soft cushioning material 5. For the cushioning material 5, for example, a solid material such as rubber or soft resin, or a foam material is used. The cushioning material 5 should have a hardness equal to or lower than that of general rubber. The surface of the cushioning material 5 that presses against the pile 20 may be processed or treated to increase the frictional resistance of the anticorrosion layer 21 .

The fixing member 3 is configured by connecting a plurality of divided bodies 3a. The fixing member 3 of this embodiment is composed of six divided bodies 3a, and the ends of the adjacent divided bodies 3a are connected by hinges 3b. Connecting portions 3c are provided at both ends of the fixing member 3 (ends of the divided bodies 3a arranged at both ends), and the connecting portions 3c can be detachably connected with connecting tools 3d. there is In this embodiment, the fixing member 3 is a continuous piece, but for example, the fixing member 3 can be configured to be separable into a plurality of parts.

As illustrated in FIG. 1 , the temporary scaffolding 1 of this embodiment is configured such that the connecting portions 3c are connected to each other and the fixing member 3 is wound around the pile 20, and the piles 20 are arranged in a horizontal direction around the axis C of the pile 20. It has six upper pressing members 4 radially extending with fixed angles changed every 60 degrees. The outer peripheral side of each upper pressing member 4 is joined to the inner peripheral side of the fixing member 3, and a cushioning material 5 is provided on the inner peripheral surface of each upper pressing member 4 that is pressed against the outer peripheral surface of the pile 20. there is

The support member 8 is configured by a plate-like member. As illustrated in FIG. 1, when the supporting members 8 are fixed to the fixing members 3 wound around the piles 20, the plurality of supporting members 8 radially extend substantially horizontally around the piles 20. become a state. In this embodiment, six supporting members 8 can be fixed to the outer peripheral side of the fixing member 3 around the axis C of the pile 20 by changing the fixing angle by 60 degrees in the horizontal direction.

In this embodiment, the supporting member 8 is fixed to the fixing member 3 by the upper engaging member 6 . Each split body 3a and each support member 8 are formed with two insertion holes into which the upper engaging members 6 are inserted. As illustrated in FIG. 2, the upper engaging member 6 is in a state in which the lower portion of the upper engaging member 6 protrudes below the supporting member 8 when the fixing member 3 and the supporting member 8 are connected. The structure is such that the upper end portion of the connecting member 12 can be connected to the lower portion of the projecting upper engaging member 6 . Each support member 8 is further formed with a plurality of insertion holes 8a into which fasteners 13a for fixing the scaffolding board 13 to the support member 8 can be inserted. In this embodiment, an elongated hole extending in the longitudinal direction of the support member 8 is formed as the insertion hole 8a.

Each support leg 9 is composed of a pair of rod-shaped members spaced apart in the width direction of the support member 8 , and the upper end of each rod-shaped member connects to the side surface of the other end of the support member 8 . 9a to be vertically rotatable. As exemplified in FIG. 2, when the tightening by the connector 9a is weakened, the angle D between the support member 8 and the support leg 9 can be changed. It has a structure that can fix 9. Each support leg 9 is fixed to the support member 8 while extending obliquely downward from the other end of the support member 8 toward the pile 20 .

Each lower pressing member 10 is connected to the lower end of the support leg 9 by a connector 10a so as to be vertically rotatable. A structure in which the fixing angle of the lower pressing member 10 to the support leg 9 can be changed by weakening the tightening by the connector 10a, and the lower pressing member 10 can be fixed to the support leg 9 by increasing the tightening by the connector 10a. It's becoming In this embodiment, cushioning material 5 is provided on the inner peripheral surface of each lower pressing member 10 that is pressed against the outer peripheral surface of pile 20 .

In this embodiment, a lower engaging member 11 is provided on the upper portion of each lower pressing member 10 , and each lower engaging member 11 has a structure capable of connecting the lower ends of the connecting members 12 . there is The connecting member 12 is composed of, for example, a wire rope, a resin rope, or the like. The length of each connecting member 12 is adjusted in advance so that the angle D formed by each supporting member 8 and supporting leg 9 is a predetermined constant angle. The upper engaging tool 6 and the lower engaging tool 11 are arranged so that the lower engaging tool 11 is positioned directly below the upper engaging tool 6 with the temporary scaffolding 1 fixed to the pile 20. ing. In this embodiment, the lower engaging member 11 is fixed to the upper portion of the lower pressing member 10. However, for example, the lower engaging member 11 may be fixed to the connecting member 10a or the lower end of the support leg 9. You can also

In this embodiment, the lower engagement member 11 and the connecting member 12 are integrated with the overhang scaffolding unit 7 in advance. The temporary scaffolding 1 of this embodiment has six overhanging scaffolding units 7 .

In this embodiment, scaffolding boards 13 each having a trapezoidal shape when viewed from the top are laid between support members 8 adjacent in the circumferential direction, and both ends of the scaffolding boards 13 are fixed to separate support members 8 with fasteners 13a. It is structured to The temporary scaffolding 1 of this embodiment has six scaffolding boards 13 .

The fixing member 3, the upper pressing member 4, the supporting member 8, the supporting leg 9, the lower pressing member 10, and the scaffold board 13 described above are made of lightweight metal such as aluminum alloy which is lightweight and excellent in durability, or fiber reinforced plastic. and so on. Each of the winding unit 2, the overhanging scaffolding unit 7, and the scaffolding board 13 can have a weight that can be manually lifted by one or two workers, specifically, for example, 15 kg or less. The winding unit 2, the overhanging scaffolding unit 7, and the scaffolding board 13 can each be formed with a density that floats on water, and even if the winding unit 2, the overhanging scaffolding unit 7, and the scaffolding board 13 fall into the water, they can easily be formed. can be recovered to For example, when the density of the winding unit 2, the overhanging scaffolding unit 7, and the scaffolding board 13 is increased, the winding unit 2, the overhanging scaffolding unit 7, and the scaffolding board 13 may be provided with float materials that float on water. can.

Next, a method of constructing a temporary scaffold on piles 20 erected in a water area using the temporary scaffold 1 will be described. In this embodiment, the temporary scaffolding 1 is installed between the lower surface of the upper structure 22 built on the upper end of the pile 20 and the water surface.

A small ship, a raft, or the like is used to transfer a winding unit 2 constituting a temporary scaffolding 1, a plurality of overhanging scaffolding units 7, and a plurality of scaffolding boards 13 to the vicinity of a pile 20.例文帳に追加Next, as illustrated in FIGS. 3 and 4, the winding unit 2 is wound around the pile 20 at a desired height and fixed.

Specifically, the fixing member 3 is fitted around the pile 20 at a desired height position, and the connecting parts 3c of the fixing member 3 are connected with the connecting tool 3d, so that the fixing member 3 is wound around the outer periphery of the pile 20. wear. When the fixing member 3 is wound around the pile 20 , the cushioning material 5 provided on each upper pressing member 4 comes into close contact with the outer peripheral surface of the pile 20 . In this embodiment, the cushioning material 5 provided on each upper pressing member 4 is brought into contact with the anti-corrosion layer 21 of each pile 20 . By pressing the outer peripheral surface of the pile 20 toward the axis C of the pile 20 by the plurality of upper pressing members 4, the pile 20 is sandwiched by the plurality of upper pressing members 4, and the winding unit 2 is attached to the pile 20. becomes stable and fixed.

Each overhanging scaffolding unit 7 is then fixed to the winding unit 2 fixed to the pile 20, as illustrated in FIG. Specifically, one end of the support member 8 is fixed to the fixing member 3 by using the upper engaging member 6 while the support member 8 is lifted. At this time, it is preferable that the tightening by the connecting member 9a that connects the support member 8 and the support leg 9 is loosened, and the support leg 9 and the lower pressing member 10 are placed on a small boat or raft. Next, as illustrated in FIGS. 1 and 2, the lower pressing member 10 is lifted, and the upper end of the connecting member 12 whose lower end is connected to the lower engaging member 11 is moved to the upper engaging member positioned above. The inner peripheral surface of the lower pressing member 10 is pressed against the outer peripheral surface of the pile 20 by connecting to the lower part of the fitting 6 . Then, the support leg 9 is fixed to the support member 8 by increasing the tightening by the connector 9 a that connects the support member 8 and the support leg 9 . In this embodiment, the cushioning material 5 provided on the inner peripheral surface of each lower pressing member 10 is brought into contact with the anti-corrosion layer 21 of each pile 20 .

When all the overhanging scaffolding units 7 are fixed to the winding unit 2, one end of the support member 8 is fixed to the fixing member 3, and the plurality of lower pressing members 10 move toward the axis C of the pile 20. By pressing the outer peripheral surface of the pile 20, the pile 20 is sandwiched by the plurality of lower pressing members 10, and the overhanging scaffolding unit 7 is stably fixed to the pile 20.例文帳に追加

Next, as exemplified in FIGS. 1 and 2, the scaffolding board 13 is bridged between the support members 8 adjacent in the circumferential direction of the pile 20, and both ends of the scaffolding board 13 are attached to the separate support members 8, respectively. It is fixed by the fixture 13a. When all the scaffolding boards 13 have been fixed, the scaffolding boards 13 are arranged continuously in a ring on the outer peripheral side of the fixing member 3 in top view. By the above, the installation work of the temporary scaffolding 1 is completed. By fixing the temporary scaffolding 1 to the piles 20 in this manner, a temporary scaffolding on which workers can ride around the piles 20 on the water is constructed. In this temporary scaffolding 1 , only the cushioning material 5 is in contact with the anticorrosion layer 21 .

As illustrated in FIG. 6, for example, a temporary scaffolding 1 that has been constructed on piles 20 can be used to construct another temporary scaffolding 1 at a position higher than the temporary scaffolding 1 . The winding unit 2, the overhanging scaffolding unit 7, and the scaffolding board 13 are lifted from a small boat or raft onto the temporary scaffolding 1 that has been fixed to the piles 20, and placed on the temporary scaffolding 1. installation work of the temporary scaffolding 1 can be performed. FIG. 6 exemplifies a case where two layers of temporary scaffolding 1 are constructed in the vertical direction, but it is also possible to construct a temporary scaffolding 1 of three or more layers. For example, a ladder or the like can be hung between the temporary scaffolds 1 installed vertically.

As exemplified in FIG. 7, a temporary scaffolding is constructed between piles 20 by fixing temporary scaffolds 1 to a plurality of piles 20, respectively, and connecting scaffolding boards 17 between adjacent temporary scaffolds 1. You can also The connecting scaffold board 17 is composed of a plate-like material or a net-like material. The connecting scaffolding board 17 is preferably made of lightweight metal such as aluminum alloy, which is lightweight and excellent in durability, or fiber-reinforced plastic.

The temporary scaffolding 1 can be removed by reversing the installation work. Specifically, the connecting scaffold board 17 is removed. Each scaffolding board 13 is then removed from the support member 8 . Next, the connection between the upper engaging tool 6 and the connecting member 12 is released, the fixation of the support member 8 to the fixing member 3 by the upper engaging tool 6 is released, and each overhanging scaffolding unit 7 is removed from the winding unit 2. Remove. Next, the connection of the connecting portion 3c of the fixing member 3 by the connecting tool 3d is released, and the winding unit 2 is removed from the pile 20. As shown in FIG. Removal of the temporary scaffolding 1 is thus completed.

Thus, according to the present invention, the fixing member 3 of the temporary scaffolding 1 is annularly wound around the outer periphery of the pile 20 , and each upper pressing member 4 and each lower pressing member 10 is attached to the outer peripheral surface of the pile 20 . , and a nonmetallic soft cushioning material 5 is pressed against the anticorrosion layer 21 . As a result, the temporary scaffolding 1 can be stably fixed while avoiding damage to the anticorrosion layer 21 even at the positions of the piles 20 where the anticorrosion layer 21 is provided.

Furthermore, by providing the cushioning material 5, even if the outer peripheral surface of the pile 20 is distorted or uneven, the cushioning material 5 is deformed according to the shape of the outer peripheral surface of the pile 20, 5 will be in close contact. Therefore, the pressing forces of the respective upper pressing members 4 and the respective lower pressing members 10 can be uniformly applied to the piles 20 without local concentration. As a result, the risk of damage to the anticorrosion layer 21 can be reduced while stably fixing the temporary scaffolding 1 to the piles 20 .

Thus, conventionally, in order to avoid damage to the anti-corrosion layer 21, measures such as fixing the temporary scaffolding to the underwater part of the pile 20 avoiding the anti-corrosion layer 21 have been taken. Then, by changing the idea from the conventional one and making the specifications suitable for fixing the temporary scaffold 1 to the anticorrosive layer 21, it is possible to fix the temporary scaffold 1 to the anticorrosive layer 21 while avoiding damage to the anticorrosive layer 21. making it possible. Accordingly, in the present invention, since the height position to which the temporary scaffolding 1 can be fixed is not limited, the temporary scaffolding 1 can be constructed at a desired height position of the piles 20 .

As in this embodiment, the temporary scaffolding 1 is composed of a winding unit 2 in which a fixing member 3 and a plurality of upper pressing members 4 are integrated, and a support member 8, supporting legs 9, and a lower pressing member 10 which are integrated. In addition, when a plurality of overhanging scaffolding units 7 and scaffolding boards 13 are configured to be separable, each of the winding unit 2, overhanging scaffolding units 7, and scaffolding boards 13 can be lifted by a small number of workers, one or two. possible weight (for example, 15 kg or less). Therefore, the winding unit 2 is wound around the stake 20 and fixed, then a plurality of overhanging scaffolding units 7 are fixed to the winding unit 2, and then the scaffolding boards 13 are fixed to the plurality of overhanging scaffolding units 7. Thus, the temporary scaffolding 1 can be easily constructed by a small number of people.

Further, for example, the constituent members of the temporary scaffolding 1 may be assembled in a water area after being separated more finely, but as in this embodiment, the winding unit 2 and the overhanging scaffolding unit 7 are formed in advance. By placing them, the temporary scaffolding 1 can be more easily constructed in a water area with a small number of man-hours. Since the removal work can be easily performed with a small number of man-hours, the convenience is greatly enhanced.

Furthermore, if the winding unit 2, the overhanging scaffolding unit 7, and the scaffolding board 13 are divided into a weight of 15 kg or less, which can be manually lifted by a worker, the temporary structure that has been constructed on the pile 20 can be used as shown in FIG. Using the scaffolding 1, it becomes possible to construct another temporary scaffolding 1 at a position higher than the temporary scaffolding 1.例文帳に追加Therefore, for example, even if the height from the water surface to the lower surface of the upper structure 22 is high, by installing a plurality of temporary scaffolds 1 in the vertical direction, the worker can reach the lower surface of the upper structure 22 at a height. A temporary scaffold 1 can be constructed.

As in this embodiment, when the upper engagement tool 6, the lower engagement tool 11, and the connecting member 12 are provided, when the overhanging scaffolding unit 7 is fixed to the winding unit 2 fixed to the pile 20, By connecting the upper engaging member 6 and the lower engaging member 11 with the connecting member 12, the load of the lower pressing member 10 and the supporting leg 9 can be supported by the fixing member 3. This makes it easier for a small number of workers to fix the overhanging scaffolding unit 7 to the winding unit 2 . Further, in a state where the construction of the temporary scaffolding 1 is completed, the load applied to the lower ends of the support legs 9 is supported by the fixed members 3 by the upper engaging tools 6 , the lower engaging tools 11 and the connecting members 12 . become. Therefore, the load applied to the connecting portion between the upper end portion of the support leg 9 and the support member 8 can be reduced, and the support leg 9 and the lower pressing member 10 can be more stably fixed to the fixing member 3 and the support member 8. . In addition, the upper engagement tool 6, the lower engagement tool 11, and the connection member 12 can be provided arbitrarily.

As in this embodiment, when the support member 8 is formed with an elongated hole as the insertion hole 8a, the fixing position of the scaffold board 13 to the support member 8 can be changed in the longitudinal direction of the support member 8. As a result, as shown in FIG. 8, even for piles 20 with different pile diameters, the same overhanging scaffolding unit 7 and The scaffolding board 13 can be used to construct the temporary scaffolding 1 on piles 20 of various pile diameters. Therefore, the temporary scaffolding 1 can be made more convenient than when the support member 8 is formed with a round hole as the insertion hole 8a.

Figures 9 and 10 illustrate another embodiment of the temporary scaffolding 1 of the present invention.

The temporary scaffolding 1 of this embodiment has a moving mechanism 14 that moves the position of the inner peripheral surface of each upper pressing member 4 toward and away from the axis C of the pile 20 . Each lower pressing member 10 is similarly provided with a moving mechanism 14 . Furthermore, each support leg 9 has a structure in which the leg length is variable. Other configurations are the same as those of the temporary scaffolding 1 of the previously illustrated embodiment.

As illustrated in FIGS. 9 and 10, the moving mechanism 14 provided in each upper pressing member 4 includes a bolt hole 15 provided in the fixing member 3 and a fixing member screwed into the bolt hole 15 to move the fixing member. 3 and an adjusting bolt 16 that connects the upper pressing member 4 . The outer peripheral end of the upper pressing member 4 is joined to the tip of the adjusting bolt 16 , and the longitudinal middle portion of the adjusting bolt 16 is fitted into the bolt hole 15 of the fixing member 3 . By rotating the adjusting bolt 16 , the position of the inner peripheral surface of the upper pressing member 4 can be moved forwards and backwards in the directions of approaching and separating from the axis C of the pile 20 .

As illustrated in FIG. 10 , each of the lower pressing members 10 in this embodiment includes a first member 10b connected to the lower end of the support leg 9 and a second member 10c pressed against the outer peripheral surface of the pile 20. consists of The moving mechanism 14 provided in each lower pressing member 10 includes a bolt hole 15 provided in the first member 10b, and screwed into the bolt hole 15 to connect the first member 10b and the second member 10c. It is composed of adjusting bolts 16 that are connected. The outer peripheral end of the second member 10c is joined to the tip of the adjustment bolt 16, and the lengthwise middle portion of the adjustment bolt 16 is fitted into the bolt hole 15 of the first member 10b. By rotating the adjusting bolt 16, the position of the inner peripheral surface of the lower pressing member 10 (second member 10c) can be moved forwards and backwards in the directions of approaching and separating from the axis C of the pile 20.

Each support leg 9 has a telescopic structure in which two cylindrical split members are connected so as to be relatively movable in the longitudinal direction. The leg length of the support leg 9 is changed by moving the divided member connected to the lower pressing member 10 relative to the divided member connected to the support member 8 to change the fixed position between the divided members. can.

A method of constructing a temporary scaffold using the temporary scaffold 1 of this embodiment is generally the same as that of the previous embodiment. As illustrated in FIG. 10, in this embodiment, the inner peripheral surface of each lower pressing member 10 of the temporary scaffolding 1 is placed on the outer peripheral surface of the pile 20 below the anticorrosion layer 21 provided on the pile 20. I am pressing. Only the cushioning material 5 provided on the upper pressing member 4 is brought into contact with the anticorrosion layer 21 .

In this way, when the inner peripheral surface of the lower pressing member 10 is pressed against the outer peripheral surface of the pile 20 below the anticorrosive layer 21 , the lower pressing member 10 is pressed against the anticorrosive layer 21 more than when the lower pressing member 10 is pressed against the anticorrosive layer 21 . It becomes possible to press the member 10 against the outer peripheral surface of the stake 20 more strongly. Therefore, it is more advantageous to stably fix the temporary scaffolding 1 to the stakes 20 . In this embodiment, the case where the lower pressing member 10 has the cushioning material 5 is exemplified. A configuration without the cushioning material 5 on the peripheral surface is also possible.

If the temporary scaffolding 1 has the moving mechanism 14 as in this embodiment, the moving mechanism 14 moves the inner circumferences of the upper pressing members 4 and the lower pressing members 10 according to the outer diameter of the piles 20 . By adjusting the position of the surface by moving back and forth, it becomes possible to use the same winding unit 2 to fix the temporary scaffolding 1 to piles 20 having various outer diameters.

Further, when the moving mechanism 14 is provided, the positions of the inner peripheral surfaces of the respective upper pressing members 4 and the respective lower pressing members 10 are advanced and retracted by the moving mechanism 14 in a state in which the fixed member 3 is wound around the outer periphery of the pile 20 . By moving and adjusting, it is possible to adjust the pressing conditions (degree of close contact, pressing force, etc.) of the respective upper pressing members 4 and the respective lower pressing members 10 with respect to the stakes 20 . Therefore, for example, as illustrated in FIG. The temporary scaffolding 1 can be more stably fixed to the piles 20 even when the surface has unevenness. The structure of the moving mechanism 14 is not limited to this embodiment, and may have a different structure.

If the temporary scaffolding 1 has a structure in which the upper end of each support leg 9 is connected to the support member 8 so as to be rotatable in the vertical direction, by changing the angle D formed by the support member 8 and the support leg 9, It is possible to change the vertical and horizontal fixing positions of the lower pressing member 10 . In addition, if each support leg 9 has a variable leg length structure, changing the leg length of the support leg 9 makes it possible to change the fixed position of the lower pressing member 10 in the vertical direction and the horizontal direction. . If each lower pressing member 10 is connected to the lower end of the supporting leg 9 so as to be rotatable in the vertical direction, even if the angle D formed between the supporting member 8 and the supporting leg 9 is changed, the lower pressing member 10 can be It is possible to adjust the fixing angle of the pressing member 10 to an appropriate angle for pressing the inner peripheral surface of the lower pressing member 10 against the outer peripheral surface of the pile 20 .

In the temporary scaffolding 1 of this embodiment, by changing the angle D between the support member 8 and the support leg 9, the leg length of the support leg 9, and the fixed angle of the lower pressing member 10 with respect to the support leg 9, The position where the side pressing member 10 is pressed can be set at a desired height position of the pile 20 . Therefore, by setting the pressing position of each lower pressing member 10 to a position where the anticorrosion layer 21 is not on the pile 20 or a position where the deterioration of the anticorrosion layer 21 is not progressing, damage to the anticorrosion layer 21 is avoided. be more favorable to

In the present invention, for example, the fixed member 3, the upper pressing member 4, the supporting member 8, the supporting leg 9, the lower pressing member 10, and a part of the scaffolding board 13 are integrated in advance into a large assembly unit. By winding the fixing member 3 around the pile 20, the temporary scaffolding 1 can be collectively installed on the pile 20. - 特許庁In this case, although the weight of the large assembly unit is increased, it is advantageous in reducing the man-hours required for the installation and removal of the temporary scaffolding 1 .

In the above-described embodiment, the temporary scaffolding 1 is fixed to the piles 20 whose outer peripheral shape is circular in cross-sectional view. By appropriately setting the position of , according to the outer peripheral shape of the pile 20, for example, it is possible to fix to the pile 20 having a polygonal outer peripheral shape in a cross-sectional view.

Each shape and structure of the fixing member 3, the upper pressing member 4, the upper engaging member 6, the supporting member 8, the supporting leg 9, the lower pressing member 10, the lower engaging member 11, the connecting member 12, and the scaffold board 13 , number, arrangement, etc., are not limited to this embodiment and may be configured differently. For example, the fixing member 3 can be composed of five or less divided bodies 3a, or can be composed of seven or more divided bodies 3a.

Also, the connecting structure between the connecting portions 3c of the fixing member 3, the connecting structure between the fixing member 3 and the supporting member 8, the connecting structure between the supporting member 8 and the supporting leg 9, and the connecting structure between the supporting leg 9 and the lower pressing member 10. The connection structure and the like are also not limited to the above-described embodiments, and can be configured differently. For example, a structure in which the upper ends of the support legs 9 are joined to the support member 8 may be employed.

1 Temporary scaffolding 2 Winding unit 3 Fixing member 3a Divided body 3b Hinge part 3c Connecting part 3d Connecting tool 4 Upper pressing member 5 Cushioning material 6 Upper engaging tool 7 Overhanging scaffolding unit 8 Supporting member 8a Insertion hole 9 Supporting leg 9a Connecting tool 10 lower pressing member 10a connector 10b first member 10c second member 11 lower engaging tool 12 connecting member 13 scaffold board 13a fixture 14 moving mechanism 15 bolt hole 16 adjustment bolt 17 connecting scaffold board 20 pile 21 anticorrosion layer 22 Upper structure C Pile axis WL Water surface position

Claims (13)

Temporary scaffolding fixed to piles erected in water bodies,
An annular fixing member wound around the outer periphery of the pile constructed by connecting a plurality of divided bodies, a plurality of upper pressing members provided on the inner peripheral side of the fixing member, and one end portion of the fixing member. are fixed and extend radially around the pile; support legs each having an upper end connected to each of the support members and extending downward; and a lower end of each of the support legs. and a scaffolding board supported by a plurality of the support members, wherein at least each of the upper pressing members among the upper pressing members and the lower pressing members is , having a non-metallic soft cushioning material on the inner peripheral surface that is pressed against the outer peripheral surface of the pile,
A winding unit in which the fixing member and the plurality of upper pressing members are integrated, a plurality of overhanging scaffolding units in which the supporting member, the supporting leg and the lower pressing member are integrated, and the scaffolding board is separable,
The fixing member of the winding unit is wound around and fixed to the outer periphery of the pile, and each of the upper pressing members is pressed against the outer peripheral surface of the pile, and the fixing member fixed to the pile. , the support members of the respective overhanging scaffolding units are separately fixed, and the lower pressing members of the respective overhanging scaffolding units are separately pressed against the outer peripheral surface of the pile. wherein each of the overhanging scaffolding units is separately fixed to the piles, and the scaffolding plates are supported by the support members of the plurality of overhanging scaffolding units fixed to the piles, so that the piles A temporary scaffolding characterized in that the temporary scaffolding is constructed in contrast to the above-mentioned temporary scaffolding. The winding unit is wound around the outer periphery of the pile and fixed, and the plurality of upper pressing members are arranged in a state of being spaced apart from each other in the circumferential direction of the pile. 1. Temporary scaffolding according to 1. Vertical separation distance between the height position of the upper pressing member pressed against the pile and the height position of the lower pressing member pressed against the pile 3. The temporary scaffolding according to claim 1 or 2, which is configured to be able to change . The temporary scaffolding according to any one of claims 1 to 3, wherein each of said lower pressing members has said cushioning material. The temporary scaffolding according to any one of claims 1 to 4, wherein each of said winding unit, said overhanging scaffolding unit and said scaffolding board weighs 15 kg or less. The temporary scaffolding according to any one of claims 1 to 5, further comprising a moving mechanism for advancing and retreating the position of the inner peripheral surface of the upper pressing member toward and away from the axial center of the pile. A temporary scaffolding construction method for constructing a temporary scaffolding on a pile erected in a water area having an anticorrosion layer in a predetermined upper and lower range of the outer peripheral surface,
An annular fixed member configured by connecting a plurality of divided bodies, a plurality of upper pressing members provided on the inner peripheral side of the fixed member, and one end fixed to the fixed member centered on the pile. a plurality of support members radially extending through the support member, support legs extending downward with upper ends connected to the support members, and lower pressing members provided at the lower ends of the support legs. and scaffolding plates supported by the support members, wherein at least each of the upper pressing members and the lower pressing members is pressed against the outer peripheral surface of the pile. A winding unit having a non-metallic soft cushioning material on an inner peripheral surface, in which the fixing member and the plurality of upper pressing members are integrated, and the supporting member, the supporting legs, and the lower pressing member. Using the temporary scaffolding that can be separated into a plurality of integrated scaffolding units and the scaffolding board,
The fixing member of the winding unit is annularly wound around the outer circumference of the pile and fixed, and each of the upper pressing members is pressed against the outer peripheral surface of the pile, and the fixing fixed to the pile The supporting members of the respective overhanging scaffolding units are separately fixed to the members, and the lower pressing members of the respective overhanging scaffolding units are separately pressed against the outer peripheral surface of the pile. and each of the overhanging scaffolding units is separately fixed to the piles, each of the shock-absorbing materials is pressed against the anticorrosion layer, and a plurality of the overhanging scaffolding units are fixed to the piles. A method of constructing a temporary scaffolding, wherein the temporary scaffolding is constructed with respect to the piles by supporting the scaffolding plates on the support members of (1). 8. The temporary construction according to claim 7, wherein when the winding unit is wound around and fixed to the outer periphery of the pile, the plurality of upper pressing members are spaced apart from each other in the circumferential direction of the pile. How to build scaffolding. Changing the vertical separation distance between the height position of the upper pressing member pressed against the pile and the height position of the lower pressing member pressed against the pile Using the temporary scaffolding configured to allow
Changing the vertical separation distance between the height position of the upper pressing member pressed against the pile and the height position of the lower pressing member pressed against the pile The method of constructing a temporary scaffolding according to claim 7 or 8, wherein the height position at which the lower pressing member is pressed against the pile is adjusted by doing so. The method of constructing a temporary scaffolding according to any one of claims 7 to 9, wherein the cushioning material provided on the inner peripheral surface of each of the lower pressing members is pressed against the anticorrosion layer. The method of constructing a temporary scaffolding according to any one of claims 7 to 9, wherein the inner peripheral surface of each of the lower pressing members is pressed against the outer peripheral surface of the pile below the anticorrosion layer. The method of constructing a temporary scaffold according to any one of claims 7 to 11, wherein the temporary scaffold that has been constructed on the pile is used to construct another temporary scaffold at a position higher than the temporary scaffold. The method of constructing a temporary scaffolding according to any one of claims 7 to 12, wherein the temporary scaffolding is fixed to each of the plurality of piles, and a connecting scaffolding board is bridged between the adjacent temporary scaffoldings.

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