Temporary structure and building construction method

Abstract

To provide a temporary structure for fall prevention with improved workability.SOLUTION: A temporary handrail H is used during the construction of a building and is attached to a skeleton B (beam B1) of the building. The temporary handrail H includes a first handrail 1 provided in a frontage direction of the building on one side of a corner part of the skeleton B, a second handrail 2 provided in a depth direction on the other side of the corner part, and a connection member 3 that connects the first handrail 1 and the second handrail 2. The connection member 3 has an extension part 50 that is provided inside a first coupling body 20 in the depth direction and extends in a direction in which the first coupling body 20 extends, a first connection part 60 that is provided in the extension part 50 and connects the first coupling body 20 and the extension part 50, and a second connection part 70 that is provided in the extension part 50 and connects the second coupling body 40 and the extension part 50.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a temporary structure and a building construction method, and more particularly to a temporary structure for preventing falls that is used during the construction of a building and is attached to the framework of the building, and a building construction method using the temporary structure. [Background technology]

[0002] 2. Description of the Related Art Conventionally, scaffolding, handrails, and the like for preventing falls that are attached to the framework of a building are known and are used during construction of a building or during maintenance after construction. For example, the temporary handrail described in Patent Document 1 comprises a first handrail attached to one side of a corner of the main body in the direction of the building's frontage, and a second handrail attached to the other side of the corner in the direction of the building's depth.

[0003] Furthermore, the temporary handrail described in Patent Document 2 includes a connection member for connecting a first handrail and a second handrail at a corner of a building. The connection member connects the ends of the first handrail and the second handrail via a single pipe joint inserted into the first handrail and the second handrail. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2010-071042 A [Patent Document 2] Japanese Patent Application Publication No. 09-291706 Summary of the Invention [Problem to be solved by the invention]

[0005] Meanwhile, in the construction of buildings using temporary handrails for fall prevention as disclosed in Patent Documents 1 and 2, there has been a demand for improving ease of construction. For example, when connecting a first handrail and a second handrail at a corner of a building using a temporary handrail as in Patent Document 2, there is a risk that the pillar and the connecting member installed at the corner of the beam may interfere with each other. This makes it difficult to connect the first connector and the second connector around the pillar, which may reduce work efficiency.

[0006] The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a temporary structure and a building construction method which improve workability compared to conventional methods. [Means for solving the problem]

[0007] The above problem is solved by a temporary structure of the present invention, which provides a temporary structure for preventing falls that is used during construction of a building and is attached to a skeleton of the building, the temporary structure comprising: a first handrail provided along a frontage direction of the building on one side of a corner of the skeleton; a second handrail provided along a depth direction perpendicular to the frontage direction on the other side of the corner; and a connecting member provided at a position corresponding to the corner and connecting the first handrail and the second handrail, the first handrail being attached to the skeleton with a gap therebetween and extending elongatedly in a vertical direction from the skeleton; The problem is solved by having a first connecting body connecting each of the extended portions, the second handrail having a pair of second support pillars attached with a gap in the depth direction and extending a long length in the up-down direction from the main body, and a second connecting body connecting each of the extended portions of the pair of second support pillars, and the connecting member having an extension portion that is provided more inward than the first connecting body in the depth direction and extends along the extension direction of the first connecting body, a first connecting portion provided on the extension portion and connecting the first connecting body and the extended portion, and a second connecting portion provided on the extension portion and connecting the second connecting body and the extended portion. The above configuration realizes a temporary structure with improved workability. More specifically, the connection member connecting the first connector and the second connector is offset to a position inside the building from the first connector. Therefore, when the temporary structure is attached to the building frame, the connection member can be avoided by the construction member constituting the frame so as not to interfere with the construction member.

[0008] In this case, the first support body is attached to a first beam that extends in the width direction and constitutes the main body, and the second support body is attached to a second beam that extends in the depth direction and constitutes the main body and is arranged perpendicular to the first beam, and when the first handrail is attached to the first beam and the second handrail is attached to the second beam, the first connecting body is positioned more inwardly than the column provided at the corner in the depth direction, and the second connecting body is positioned more inwardly than the column in the width direction. With the above-mentioned configuration, when the temporary structure is attached to the beam, it can be attached by avoiding the pillars provided on the beam. In addition, as described above, by arranging the connectors on the inside of the building relative to the columns installed on the beams, workers can conveniently install the exterior wall panels. In other words, the temporary structure can be temporarily set up so that it does not interfere with the columns.

[0009] In this case, each of the first support body and the second support body has a base portion attached to the main body and a support portion extending a long length in the vertical direction from the base portion, and the support portion has a first extension portion extending upward from the base portion, a second extension portion extending from the tip of the first extension portion in a direction inclined from the extension direction of the first extension portion, and a third extension portion extending upward from the tip of the second extension portion, and the first connecting body is connected to the third extension portion of each of the pair of first support bodies, and the second connecting body is connected to the third extension portion of each of the pair of second support bodies, and when the first handrail and the second handrail are attached to the main body, the first connecting body is positioned inwardly of the base portion and the first extension portion in the depth direction, and the second connecting body is positioned inwardly of the base portion and the first extension portion in the width direction. As described above, for example, by forming the first support body and the second support body in a crank shape, interference between the construction members that form the framework of the building and the temporary structure can be further suppressed.

[0010] In this case, the first connecting bodies are provided in a pair spaced apart in the vertical direction, the extension portion has a U-shape and includes a first extension portion extending along the extension direction of one of the first connecting bodies, a second extension portion extending along the extension direction of the other of the first connecting bodies, and a third extension portion extending in the vertical direction and connecting the first extension portion and the second extension portion, and the first connection portion is provided on the first extension portion and the second extension portion, respectively, and connects the first extension portion and the one of the first connecting bodies, and connects the second extension portion and the other of the first connecting bodies. With the above configuration, the upper and lower first connectors are connected to each other, thereby improving the strength of the temporary structure.

[0011] In this case, the second connector is connected in a state of abutment against the side of the second support body, and when the second handrail is attached to the main body, the second connector is positioned more inward in the width direction than the pair of second support bodies, and is supported from the outside in the width direction by the pair of second support bodies. With the above-mentioned configuration, the second connector is firmly supported by the second support column, so that the supporting force of the second connector can be stabilized and the fall prevention function for the worker can be improved.

[0012] In this case, the end portion of the second connector on the first connector side in the depth direction is connected in abutting contact with the upper surface of the connecting member, and the second connector is supported from below by the connecting member. With the above-described configuration, the second connector can be attached to the connecting member from above, which makes it easy to connect the first connector and the second connector, thereby improving work efficiency.

[0013] Furthermore, according to the building construction method of the present invention utilizing the temporary structure, the above problem is solved by including a column attachment process for attaching the pair of first column bodies and the pair of second column bodies to beams that constitute the main body, a connector attachment process for attaching the first connector to the pair of first column bodies and the second connector to the pair of second column bodies, a connection member attachment process for attaching the connecting members to the first connectors and the second connectors, and a column attachment process for attaching the columns to the corners of the main body, wherein in the connection member attachment process, the first connection part is positioned inside the mounting portion of the column at the corner in the depth direction, and the second connection part is positioned inside the mounting portion of the column at the corner in the width direction. With the above-mentioned configuration, the connection portion of the connection member is offset to a position inside the building relative to the pillar. Therefore, when the pillar is attached to the building frame, the building can be constructed so that the temporary structure and the pillar do not interfere with each other. Effect of the Invention

[0014] According to the temporary structure and building construction method of the present invention, workability can be improved compared to the conventional art during building construction and maintenance after construction. [Brief description of the drawings]

[0015] [Figure 1]FIG. 13 is a diagram showing the state in which a temporary handrail is attached to the framework of a building. [Diagram 2] This is a diagram showing the state in which temporary handrails and construction members are attached to the building's framework. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. 1 is a top view of a temporary handrail at a corner of a building. [Figure 6] FIG. 4 is an exploded perspective view of a second connection portion and a second connector body. [Figure 7] This is a process diagram showing a building construction method using temporary handrails. [Figure 8] FIG. 11 is a perspective view of a first handrail of a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The present embodiment relates to a "temporary structure" that is a temporary structure for preventing falls that is used during construction of a building and is attached to the building's framework, and that enables improved workability compared to conventional methods. The present embodiment also relates to a "building construction method using a temporary structure." In this embodiment, the "temporary handrail" corresponds to the temporary structure.

[0017] <Overall composition> As shown in Figures 1 and 2, the temporary handrail H is a temporary structure for preventing falls used during construction of a building, and is attached to the building frame B. The temporary handrail H is attached to the building frame B before construction members such as columns B3 and exterior wall panels B5 are attached to beams B1 and floor panels B2 that constitute the building frame B, and is removed from the building frame B after the construction members are attached. Below, the building structure B will be explained, followed by a detailed explanation of the temporary handrail H.

[0018] As shown in Figures 1 and 2, the building's structure B comprises a beam B1 extending in the frontage or depth direction of the building, a floor panel B2 fixed on the beam B1, columns B3 that are long in the vertical direction and spaced apart in the frontage or depth direction of the building, an eaves beam B4 attached to the upper end of the column B3 and extending in the frontage or depth direction of the building, and an exterior wall panel B5 attached to the beam B1, the column B3, and the eaves beam B4.

[0019] The beam B1 connects the columns B3 to each other and includes a first beam B1a that extends in the building's frontage direction (beam direction) and constitutes the structure B, and a second beam B1b that extends in the building's depth direction (beam direction) and constitutes the structure B, and is disposed perpendicular to the first beam B1a. The position where the first beam B1a and the second beam B1b intersect perpendicularly is the corner C of the building's structure B. A diaphragm is provided in the corner C at the position where the first beam B1a and the second beam B1b intersect perpendicularly. In this embodiment, the corner C is an outside corner, but the corner C may be an inside corner.

[0020] The floor panel B2 is disposed inside the beam B1 and the column B3 in the skeleton B. Specifically, the floor panel B2 is placed so as to overlap a portion of the upper surface of the beam B1, and is disposed at a position not overlapping the column B3.

[0021] The column B3 is provided at a corner C where the first beam B1a and the second beam B1b intersect at right angles or between adjacent beams B1 in the frontage direction of the building, and is connected to the beam B1. The column B3 at the corner C is attached to the upper surface of a diaphragm provided at a position where the first beam B1a and the second beam B1b intersect at right angles. In addition, when the pillar B3 is a partition (small pillar), the pillar B3 may be attached onto the beam B1.

[0022] The eaves beam B4 is a horizontal member constituting the skeleton B, and is attached to the upper end of the column B3. The horizontal member attached to the upper end of the column B3 may be a girder or a beam other than the eaves beam.

[0023] The exterior wall panels B5 are plate-shaped exterior wall materials constituting the structure B, and are disposed outside the columns B3 and the beams B1 in the structure B. The exterior wall panels B5 are disposed so as to be aligned along the frontage direction or the depth direction of the building.

[0024] In the above-mentioned structure B, the temporary handrail H is attached to the upper surface of the beam B1 as shown in Fig. 1. Then, when the temporary handrail H is attached to the upper surface of the beam B1, a part of the temporary handrail H is positioned offset inward from the column B3 in the depth direction of the building. In other words, as shown in Fig. 2, a part of the temporary handrail H can avoid the column B3, and the temporary handrail H can be continuously extended along the beam B1.

[0025] Therefore, the temporary handrail H can be continuously installed near the pillar B3 arranged at the corner C. In addition, the temporary handrail H can also be continuously installed near the pillar B3 arranged between adjacent beams B1 in the frontage direction of the building. Therefore, workers can perform the installation work of the exterior wall panel B5 with greater safety.

[0026] <Details of temporary handrail H> As shown in Figure 1, the temporary handrail H comprises a first handrail 1 provided on one side of a corner C of the main body B along the frontage direction of the building, a second handrail 2 provided on the other side of the corner C along the depth direction of the building, a connecting member 3 provided at a position corresponding to the corner C and connecting the first handrail 1 and the second handrail 2, and a net member 4 covering the lower portion of the temporary handrail H. 1 shows a state in which the temporary handrail H is attached to the beam B1 so as to surround a part of the floor panel B2, the temporary handrail H may be attached to the beam B1 so as to surround the entire periphery of the floor panel B2. Also, the connection members 3 may be provided at positions corresponding to the multiple corners C, respectively.

[0027] 1 to 3, the first handrail 1 is provided along the frontage direction of the building on one side of a corner C of a skeleton B. The first handrail 1 is attached to the upper surface of a first beam B1a. The first handrail 1 has a pair of first support pillars 10 attached to the body B with a gap therebetween in the frontage direction and extending vertically from the body B, and a first connector 20 connecting the respective extending portions of the pair of first support pillars 10. The first connectors 20 are provided as a pair with a gap therebetween in the vertical direction, and connect the upper and central portions of the pair of first support pillars 10, respectively.

[0028] 1 to 3, the second handrail 2 is provided along the depth direction perpendicular to the frontage direction of the building on the other side of the corner C of the skeleton B. The second handrail 2 is attached to the upper surface of the second beam B1b. The second handrail 2 has a pair of second support pillars 30 attached to the body B with a gap therebetween in the depth direction and extending longitudinally from the body B in the vertical direction, and a second connector 40 connecting the respective extending portions of the pair of second support pillars 30. The second connectors 40 are provided as a pair with a gap therebetween in the vertical direction, and connect the upper and central portions of the pair of second support pillars 30, respectively.

[0029] The connecting member 3 is provided at a position corresponding to the corner C, as shown in FIGS. 1 to 3, and connects the first handrail 1 and the second handrail 2. The connecting member 3 has an extension portion 50 extending along the extension direction of the first connecting body 20, a first connecting portion 60 connecting the first connecting body 20 and the extension portion 50, and a second connecting portion 70 connecting the second connecting body 40 and the extension portion 50.

[0030] 1 and 2, the net member 4 is a small-width net for preventing tools and parts from falling, covering the lower part of the temporary handrail H. The upper end of the net member 4 is attached to a first connector 20 connected to the center of the first support body 10, and a second connector 40 connected to the center of the second support body 30. The lower end of the net member 4 is attached to the lower parts of the first support body 10 and the second support body 30.

[0031] <Components of the first handrail 1> 1 to 4, the pair of first support bodies 10 are attached to the body B with a gap therebetween in the frontage direction, and extend vertically from the body B. Since the pair of first support bodies 10 have the same shape, one of the first support bodies 10 (the first support body 10 on the second handrail 2 side) will be described as an example, and a description of the other first support body 10 (the side opposite the second handrail 2 side) will be omitted. The first support body 10 has a base portion 11 attached to the upper surface of the first beam B1a of the main body B, a support portion 12 extending upward from the base portion 11, and an engagement portion 13 provided on the support portion 12 for engaging with the first connecting body 20.

[0032] As shown in FIG. 4, the base portion 11 is a base member that ensures the mounting strength (bending strength) of the temporary handrail H, and is in contact with the upper surface of the beam B1. Specifically, the base portion 11 has a base plate 11a protruding on both sides in the width direction (frontage direction in Figure 3) from the lower end of the first support body 10, a support pin 11b protruding downward from the base plate 11a and inserted into the first beam B1a, and a rib 11c connecting the first support body 10 and the base plate 11a.

[0033] The base plate 11a is made of a plate-like member and is in contact with the upper surface of the first beam B1a. A support pin 11b is welded to the base plate 11a at a position facing a through hole (not shown) of the first beam B1a.

[0034] The support pins 11b are rod-shaped members that are long in the vertical direction, and are arranged in pairs at a distance from each other on the lower surface of the base plate 11a. The tip of the support pin 11b has a tapered shape, becoming thinner toward the tip. Each of the pair of first support bodies 10 protrudes so that one (left side in FIG. 4) support pin 11b is longer than the other (right side in FIG. 4) support pin 11b. By making the length of the support pins 11b the same and configuring the pair of first support bodies 10 to have the same shape, the number of parts of the temporary handrail H can be reduced. Note that all of the support pins 11b may be the same length. Also, the length of the support pins 11b may be changed to configure the pair of first support bodies 10 to have different shapes. The support pin 11b is inserted into a through hole provided in the upper flange (upper surface of the first beam B1a) of the beam B1 and the lower flange (lower surface of the first beam B1a) of the beam B1. Therefore, a temporary handrail H that is excellent in stability and can be easily attached and removed can be realized.

[0035] A pair of ribs 11c are provided on the upper surface of the base plate 11a to sandwich the support portion 12. Each of the ribs 11c has a substantially right-angled triangular shape, and widens while inclining from the support portion 12 side toward the first beam B1a side in the vertical direction.

[0036] As shown in FIG. 4, the support portion 12 is a long hollow body having a rectangular cross section, and extends upward from the base portion 11. The support portion 12 has a crank shape and has a first extension portion 12a extending upward from the base portion 11, a second extension portion 12b extending from the tip of the first extension portion 12a in a direction inclined from the extension direction of the first extension portion 12a, and a third extension portion 12c extending upward from the tip of the second extension portion 12b.

[0037] The first extending portion 12a extends upward from the upper surface of the base plate 11a. Ribs 11c are connected to both sides of the first extending portion 12a in the width direction. The second extending portion 12b is bent from the tip of the first extending portion 12a and extends so as to be inclined upward toward the inside in the depth direction of the building with respect to the first extending portion 12a. Specifically, the second extending portion 12b extends so as to be inclined at about 45 degrees with respect to the first extending portion 12a. The third extending portion 12c is bent and extends upward from the tip of the second extending portion 12b. Specifically, the third extending portion 12c extends at an angle of about 45 degrees with respect to the second extending portion 12b. An engagement portion 13 for detachably engaging the first connector 20 is provided at the upper and central portions of the third extending portion 12c.

[0038] The engagement portion 13 is, for example, a spring-type gravity lock, as shown in Fig. 4. The engagement portion 13 is provided on the outer surface of the third extension portion 12c, and protrudes toward the inside of the skeleton B in the depth direction of the building.

[0039] 1 to 4, the pair of first connectors 20 are attached to the first support column 10 with a gap therebetween in the vertical direction, and extend longitudinally along the frontage direction of the building. Since the pair of first connectors 20 each have the same shape, one (upper) first connector 20 will be described as an example, and a description of the other (lower) first connector 20 will be omitted. The first connecting body 20 has a horizontal bar 21 extending longitudinally along the frontage direction of the building, an engaged portion 22 provided at the extending end of the horizontal bar 21 and connected to the engaging portion 13 of the first support body 10, and a length adjustment portion 23 for adjusting the length of the horizontal bar 21.

[0040] 1 to 4, horizontal rail 21 is a hollow pipe material that extends long and is configured to be separable into two in the extension direction of horizontal rail 21. Horizontal rail 21 has a first pipe 21a provided on the second handrail 2 side, and a second pipe 21b provided on the opposite side to the second handrail 2 side. A first connection portion 60 of the connection member 3 is detachably attached to the first pipe 21a of the horizontal rail 21.

[0041] The horizontal bar 21 is, for example, an expandable pipe material, and its length in the extension direction can be adjusted by the length adjustment part 23. More specifically, the diameter of the first pipe 21a is formed to be larger than the diameter of the second pipe 21b. The second pipe 21b is inserted inside the first pipe 21a and is provided so as to be slidable relative to the first pipe 21a. Therefore, the overall length of the horizontal bar 21 can be changed by adjusting the length of the second pipe 21b inserted inside the first pipe 21a.

[0042] 1 to 4, the engaged portions 22 are provided at both ends of the horizontal rail 21 in the extension direction, and are detachably connected to the engaging portions 13. The engaged portions 22 have a first flat plate portion 22a provided at one end of the horizontal rail 21 in the extension direction (the end of the first pipe 21a on the second handrail 2 side), and a second flat plate portion 22b provided at the other end of the horizontal rail 21 in the extension direction (the end of the second pipe 21b on the opposite side to the first pipe 21a side).

[0043] The first flat plate portion 22a and the second flat plate portion 22b are flat plate-like portions, and are formed with engagement holes 22c that detachably engage with the engagement portion 13. The first flat plate portion 22a is formed into a flat plate shape by pressing one end of the first pipe 21a. The second flat plate portion 22b is formed into a flat plate shape by pressing the other end of the second pipe 21b. The first flat plate portion 22a may be provided with a plate member separate from the first pipe 21a at one end of the first pipe 21a, and the second flat plate portion 22b may be provided with a plate member separate from the second pipe 21b at the other end of the second pipe 21b.

[0044] As shown in FIG. 4, the first flat plate portion 22a and the second flat plate portion 22b have engagement surfaces in which the engagement holes 22c are formed, which are connected to the side surfaces of the pair of first support pillars 10 in abutment therewith. Then, as shown in Figure 5, when the first handrail 1 is attached to the main body B, the first connecting body 20 is positioned inside the pair of first support bodies 10 in the depth direction of the building, and is supported from the outside in the depth direction of the building by the pair of first support bodies 10.

[0045] The length adjustment part 23 is a screw part for fixing the position of the second pipe 21b inserted inside the first pipe 21a. When the length adjustment part 23 is loosened, the second pipe 21b becomes slidable relative to the first pipe 21a, and when the length adjustment part 23 is tightened, the second pipe 21b is fixed to the first pipe 21a.

[0046] <Components of the second handrail 2> As shown in Figs. 1 to 3 and 5, the pair of second support pillars 30 are attached to the body B with a gap therebetween in the depth direction, and extend long from the body B in the vertical direction. The second support body 30 has a second base portion 31 attached to the upper surface of the second beam B1b of the body B, a second support portion 32 extending upward from the second base portion 31, and a second engagement portion 33 provided on the second support portion 32 for engaging with the second connector 40. Note that the pair of second support bodies 30 has the same configuration as the pair of first support bodies 10, and therefore a detailed description thereof will be omitted.

[0047] 1 to 3 and 5, the pair of second connectors 40 are attached to the second support columns 30 at a distance from each other in the vertical direction, and extend longitudinally along the depth direction of the building. Note that, regarding the pair of second connectors 40, descriptions of the same configuration as the pair of first connectors 20 will be omitted.

[0048] The second connector 40 extends beyond the second support body 30 provided on the first handrail 1 side, toward the first handrail 1. In detail, the second connector 40 has a configuration similar to that of the first connector 20, and further has an extension 41 extending longitudinally along the depth direction of the building, a support column engaged part 42 provided at one end of the extension 41 and connected to the second support body 30, a connection engaged part 43 provided at the other end of the extension 41 and connected to the connection member 3, and an orientation adjustment part 44 for adjusting the orientation of the extension 41.

[0049] 1 to 3 and 5, the extension part 41 is a hollow pipe material that extends in a long length and is configured to be separable into two in the extension direction of the extension part 41. The extension part 41 has a first extension pipe 41a provided on the second support body 30 side and a second extension pipe 41b provided on the connection member 3 side.

[0050] The extension portion 41 is, for example, a telescopic pipe material, and more specifically, the diameter of the first extension pipe 41a is formed larger than the diameter of the second extension pipe 41b. The second extension pipe 41b is inserted inside the first pipe 21a and is provided so as to be rotatable in the circumferential direction with respect to the first extension pipe 41a.

[0051] 3 and 5, the pillar engaged portion 42 is provided at one end in the extension direction of the first extension pipe 41a, and is detachably connected to the second engaging portion 33. The pillar engaged portion 42 is a flat plate-like portion, and has a pillar engaging hole 42a that detachably engages with the second engaging portion 33 formed therein.

[0052] As shown in Figures 3 and 5, the engagement surface of the pillar engaged portion 42, in which the pillar engagement hole 42a is formed, is connected in an abutting state to the side surface of the second pillar body 30 via the second connector 40. When the second handrail 2 is attached to the main body B, the second connecting body 40 is positioned inside the pair of second support bodies 30 in the frontage direction of the building, and is supported from the outside in the frontage direction of the building by the pair of second support bodies 30.

[0053] 3 and 5, the connection engaged part 43 is provided at the other end in the extension direction of the first extension pipe 41a, and is detachably coupled to a protruding part 72 of the second connection part 70 described later. The connection engaged part 43 is a flat plate-like part, and has a connection engagement hole 43a that detachably engages with the protruding part 72 formed therein.

[0054] 3 and 5, the direction adjustment part 44 is a screw part for fixing the position of the second extension pipe 41b inserted inside the first extension pipe 41a. The second extension pipe 41b becomes rotatable with respect to the first extension pipe 41a when the length adjustment part 23 is loosened, and is fixed with respect to the first extension pipe 41a when the length adjustment part 23 is tightened. Therefore, the circumferential orientation of the connection engaged portion 43 relative to the support column engaged portion 42 can be adjusted. The overall length of the extension portion 41 may be changed by adjusting the length of the second extension pipe 41b inserted into the first extension pipe 41a using the direction adjustment portion 44.

[0055] <Components of the connection member 3> 3 and 5, the extension portion 50 has a U-shape and is formed by bending a hollow pipe material that extends over a long length. The extension portion 50 has a first extension portion 51 extending along the direction in which one (upper) first connector 20 extends, a second extension portion 52 extending along the direction in which the other (lower) first connector 20 extends, and a third extension portion 53 extending in the vertical direction and connecting the first extension portion 51 and the second extension portion 52.

[0056] As shown in FIG. 3, the first extending portion 51 is an upper portion of the extending portion 50 that extends in the frontage direction of the building. 5, a first connection part 60 is attached to an inner end part of the first extension part 51 in the frontage direction of the building. Also, a second connection part 70 is attached to an outer end part of the first extension part 51 in the frontage direction of the building.

[0057] 3, the second extension portion 52 is a lower portion of the extension portion 50 that extends in the direction of the frontage of the building. The first extension portion 51 and the second extension portion 52 extend parallel to each other. A first connection part 60 is attached to an inner end part in the frontage direction of the building of the first extension part 51. Further, a second connection part 70 is attached to an outer end part in the frontage direction of the building of the first extension part 51.

[0058] 3, the third extension portion 53 is a portion of the extension portion 50 that extends in the up-down direction. The portions where the first extension portion 51 and the second extension portion 52 intersect with the third extension portion 53 at right angles are curved. A first connection part 60 is attached to an inner end part of the first extension part 51 in the frontage direction of the building. Also, a second connection part 70 is attached to an outer end part of the first extension part 51 in the frontage direction of the building.

[0059] 5, in a top view, the extension portion 50 is provided inside the first connector 20 in the depth direction of the building, and extends in the extension direction of the first connector 20. In other words, the extension portion 50 is provided inside the base portion 11 of the first support body 10 in the depth direction of the building. In this way, the extension portion 50 is offset to a position inside the building relative to the first connector 20. Therefore, when the temporary handrail H is attached to the skeleton B of the building, the connection member 3 can be attached by avoiding the pillars B3 that constitute the skeleton B so as not to interfere with the pillars B3.

[0060] 3 and 5, the first connection part 60 is, for example, a clamp that detachably connects a plurality of pipe materials. A plurality of first connection parts 60 are provided, and each is attached to the first extension part 51 and the second extension part 52 of the extension part 50. Since the plurality of first connection parts 60 each have the same shape, one (upper) first connection part 60 will be described as an example, and a description of the other (lower) first connection part 60 will be omitted. The first connection portion 60 has a first clamp 61 attached to the first extension portion 51 of the extension portion 50, and a second clamp 62 provided outside the first clamp 61 in the depth direction of the building.

[0061] 3, the first clamp 61 is, for example, a one-touch clamp, and is detachably attached to the inner end of the first extension portion 51 in the frontage direction of the building. The first clamp 61 and the second clamp 62 are provided side by side in the depth direction of the building.

[0062] 3, the second clamp 62 is, for example, a one-touch clamp, and detachably attaches the horizontal rail 21 of the first connector 20. Specifically, the second clamp 62 detachably attaches the end of the first pipe 21a of the horizontal rail 21 on the second handrail 2 side.

[0063] The first connection portion 60 is provided on the first extension portion 51 and the second extension portion 52, respectively, and connects the first extension portion 51 to one (upper) first connector 20, and connects the second extension portion 52 to the other (lower) first connector 20. To be more specific, the upper first connector 20 is attached to the first extension portion 51 by the upper second clamp 62. And the lower first connector 20 is attached to the second extension portion 52 by the lower second clamp 62. Therefore, by connecting the upper and lower first connectors 20, the strength of the temporary handrail H can be improved.

[0064] 5, in a top view, the first clamp 61 of the first connection part 60 is provided on the inside of the first connector 20 in the depth direction of the building. The second clamp 62 is provided on the inside of the base part 11 in the depth direction of the building. In this way, the first connection part 60 is offset to a position inside the building relative to the base part 11. Therefore, when the temporary handrail H is attached to the skeleton B of the building, the connection member 3 can be attached by avoiding the pillars B3 that constitute the skeleton B so as not to interfere with the pillars B3.

[0065] 3 and 5, the second connection portion 70 is, for example, a clamp with a gravity lock. A plurality of second connection portions 70 are provided, and are attached to the first extension portion 51 and the second extension portion 52 of the extension portion 50, respectively. Note that since the plurality of second connection portions 70 each have the same shape, one (upper) second connection portion 70 will be described as an example, and a description of the other (lower) second connection portion 70 will be omitted. The second connection portion 70 has a clamp portion 71 attached to the first extension portion 51 of the extension portion 50 , and a protrusion 72 protruding upward from the upper surface of the clamp portion 71 .

[0066] As shown in FIG. 6, the clamp portion 71 is, for example, a one-touch clamp, and is detachably attached to the outer end portion of the first extension portion 51 in the frontage direction of the building.

[0067] 6, the protrusion 72 is, for example, a gravity lock, and detachably attaches the connection engaged portion 43 of the second connector 40. Specifically, the protrusion 72 is detachably inserted into the connection engagement hole 43a formed in the connection engaged portion 43.

[0068] 3 and 6, an end of the second connector 40 on the first connector 20 side in the depth direction of the building is connected in a state of abutting against the upper surface of the connecting member 3. Specifically, the connection engaged portion 43 of the second connector 40 is connected in a state of abutting against the upper surface of the clamp portion 71 of the second connecting portion 70. In this way, when the temporary handrail H is attached to the body B, the connection engaged portion 43 of the second connector 40 is supported from below by the second connection portion 70 of the connecting member 3. Therefore, the second connector 40 can be attached from above to the connecting member 3 to which the first connector 20 is attached. Therefore, the first connector 20 and the second connector 40 can be easily connected, improving work efficiency.

[0069] 5, the orientation of the pillar engaged portion 42 and the orientation of the connection engaged portion 43 are different in the circumferential direction of the second connecting body 40. Specifically, the surface of the pillar engaged portion 42 faces the frontage direction of the building, while the surface of the connection engaged portion 43 faces in the vertical direction. By making the orientation of the support engaged portion 42 and the orientation of the connection engaged portion 43 different using the orientation adjustment portion 44, the second connecting body 40 can be firmly supported by the second support body 30 while the second connecting body 40 can be attached to the connecting member 3 from above. Therefore, the first connector 20 and the second connector 40 can be easily connected while the supporting force of the second connector 40 is stabilized.

[0070] As shown in FIG. 5, in top view, the clamp portion 71 of the second connection portion 70 is provided inside the second base portion 31 of the second support column body 30 in the frontage direction of the building. In this way, the second connection portion 70 is offset to a position inside the building relative to the second base portion 31. Therefore, when the temporary handrail H is attached to the skeleton B of the building, the connection member 3 can be attached by avoiding the pillars B3 that constitute the skeleton B so as not to interfere with the pillars B3.

[0071] <Building construction method using temporary structures> Next, a building construction method using the temporary handrail H will be described with reference to FIG. The construction method includes a "support body mounting process (S1)" of mounting the first support body 10 and the second support body 30 to the main body B, a "connector mounting process (S2)" of mounting the first connector 20 to the first support body 10 and the second connector 40 to the second support body 30, a "connection member mounting process (S3)" of mounting the connecting member 3 to the first connector 20 and the second connector 40, a "net mounting process (S4)" of mounting the net member 4 to the first handrail 1 and the second handrail 2, a "column mounting process (S5)" of mounting the column B3 to the corner C, a "eaves beam mounting process (S6)" of mounting the eaves beam B4 to the upper end of the column B3, an "exterior wall panel mounting process (S7)" of mounting the exterior wall panel B5 to the beam B1, the column B3 and the eaves beam B4, and a "handrail removal process (S8)" of removing the temporary handrail H from the main body B. In addition, explanations of construction steps other than those mentioned above regarding the construction of a building will be omitted.

[0072] In the "support body mounting process (S1)", a worker mounts a pair of first support bodies 10 and a pair of second support bodies 30 to a beam B1 that constitutes the body B. Specifically, a worker attaches a pair of first support columns 10 to the first beam B1a with a gap therebetween in the frontage direction of the building, and then attaches a pair of second support columns 30 to the second beam B1b with a gap therebetween in the depth direction of the building.

[0073] In the “connector attachment step (S2)”, a worker attaches a first connector 20 to the pair of first support columns 10. Then, a second connector 40 is attached to the pair of second support columns 30. Specifically, a worker attaches the engaged portion 22 of the first connector 20 to the engaging portion 13 of the first support body 10. Similarly, the worker attaches the engaged portion of the second connector 40 of the second handrail 2 to the second engaging portion 33 of the second support body 30.

[0074] In the "connecting member attachment step (S3)", a worker attaches the connecting member 3 to the first connector 20 and the second connector 40. Specifically, the worker attaches the cross rail 21 of the first connector 20 to the second clamp 62. In addition, the worker attaches the extension portion 41 of the second connector 40 to the protrusion 72. In the connection member installation process (S3), the first connection part 60 is positioned inside the mounting portion of column B3 at the corner C in the depth direction of the building (specifically, a part of the diaphragm provided at a position where the first beam B1a and the second beam B1b intersect perpendicularly), and the second connection part 70 is positioned inside the mounting portion of column B3 at the corner C in the frontage direction of the building.

[0075] In this way, the connection member 3 is offset to a position inside the building from the mounting portion of the pillar B3. Therefore, when the pillar B3 is mounted to the corner C in the pillar mounting step (S5), the pillar B3 can be mounted by dodging the temporary handrail H so that the pillar B3 does not interfere with the connection member 3.

[0076] In the "net attachment step (S4)", a worker ties the upper end of the net member 4 to the lower first connector 20 and the lower second connector 40. In addition, the worker ties the lower end of the net member 4 to the first extension portion 12a of the first support body 10 and the lower part of the first extension portion 12a of the second support body 30.

[0077] In the "column attachment process (S5)", a worker attaches the column B3 constituting the body B to the beam B1. When placing the column B3 at the corner C (specifically, the upper surface of the diaphragm provided at the position where the first beam B1a and the second beam B1b intersect at right angles), the worker places the column B3 outside the first connection portion 60 in the depth direction of the building, and places the column B3 outside the second connection portion 70 in the frontage direction of the building. In the pillar mounting step (S5), the worker may mount construction members such as pillars B3 and braces other than the corners C.

[0078] In the "eaves beam attachment process (S6)", a worker attaches the eaves beam B4 to the upper end of the pillar B3. The worker attaches the eaves beam B4 so as to surround the floor panel B2.

[0079] In the "exterior wall panel installation process (S7)", a worker installs an exterior wall panel B5 to a portion of the beam B1 that is located outside the body B relative to the temporary handrail H. The worker uses panel fixing metal fittings to install the exterior wall panel B5 to the beam B1, the column B3, and the eaves beam B4. In addition, when attaching the exterior wall panel B5, the first handrail 1 and the second handrail 2 can be used as positioning members for the main body B.

[0080] In the "handrail removal process (S8)", a worker removes the temporary handrail H from the beam B1. The removal of the temporary handrail H is performed in the reverse order of the above-mentioned steps S1 to S4.

[0081] In this construction method, the worker constructs the pillar B3 after constructing the temporary handrail H, but the pillar B3 may be constructed first. In addition, in this construction method, a worker attaches each of the support bodies of the first handrail 1 and the second handrail 2 to the beam B1 in the support body attachment step (S1), and then attaches each connector to each support body in the connector attachment step (S2). However, without being limited to this, the worker may install a pair of first support bodies 10, then the first connector 20 to construct the first handrail 1, and then install a pair of second support bodies 30, then the second connector 40 to construct the second handrail 2.

[0082] The temporary handrail H may also be used for laying the floor panel B2. More specifically, the third extension 12c of the first support column 10 (support column 12) is offset outward from the first extension 12a in the depth direction of the building. Similarly, the second support column 30 is also offset outward. With the above configuration, the first connector 20 and the second connector 40 are disposed outside the beam B1. This makes it possible to prevent interference between the first connector 20 and the second connector 40 of the temporary handrail H and the worker when laying the floor panel B2 on the beam B1. This makes it easier for the worker to secure a work area, and allows the worker to preferably perform the work of laying the floor panel B2.

[0083] <Second embodiment of temporary handrail H> Next, a first handrail 101 of a second embodiment will be described with reference to Fig. 8. Note that a description of configurations that overlap with the first handrail 1 described above will be omitted. The second handrail in the second embodiment may have a similar configuration to the first handrail 101, or may have a similar configuration to the first handrail 1 in the first embodiment.

[0084] 8, the first handrail 101 has a pair of first support pillars 110 attached to the body B with a gap therebetween in the frontage direction and extending vertically from the body B, and a first connector 120 connecting the respective extending portions of the pair of first support pillars 10. The first connectors 120 are provided in pairs with a gap therebetween in the vertical direction, and connect the upper and central portions of the pair of first support pillars 110, respectively.

[0085] The first support body 110 has a base portion 111 attached to the upper surface of the first beam B1a of the main body B, a support portion 112 extending upward from the base portion 111, and an engagement portion 113 provided on the support portion 112 for engaging with the first connecting body 120.

[0086] As shown in Figure 8, the support portion 112 has an F-shape in side view, and has a first extension portion 112a extending upward from the base portion 111, a second extension portion 112b protruding horizontally from the center of the extension direction of the first extension portion 112a, and a third extension portion 112c protruding horizontally from the upper end of the extension direction of the first extension portion 112a. The second extending portion 112b and the third extending portion 112c each extend in a direction perpendicular to the extending direction of the first extending portion 112a. The engagement portion 113 is attached to the tip end of each of the second extension portion 112b and the third extension portion 112c.

[0087] The first connector 120 is a flat member extending longitudinally along the frontage direction of the building, as shown in Fig. 8. An engagement hole 120a into which the engagement portion 113 is inserted is formed at the extending end of the first connector 120. The connecting member 3 is attached to the first connecting body 120. In this case, the first connecting portion 60 of the connecting member 3 is configured to match the shape of the first connecting body 120. For example, the first connecting portion 60 may be in a clip shape so as to detachably hold the first connecting body 120.

[0088] Even with the above simple configuration, when the temporary handrail H is attached to the upper surface of the beam B1, a part of the temporary handrail H (first connector 120) is positioned offset inward from the column B3 in the projection direction of the body B. In other words, a part of the temporary handrail H can avoid the column B3, and the temporary handrail H can be continuously extended along the beam B1.

[0089] <Other embodiments> In the above embodiment, as shown in FIG. 1, the temporary handrail H is described as being equivalent to the "temporary structure", but this is not particularly limited and can be changed. For example, a temporary scaffold may be used instead of a temporary handrail, or a temporary ladder, a temporary wall, or the like may be used. When the "temporary structure" is used as temporary scaffolding, it is advisable that the connecting body is configured as a flat scaffolding base (top base).

[0090] In the above embodiment, as shown in FIG. 1, the first support body 10 and the second support body 30 of the temporary handrail H are attached to the beam B1 of the structure B, but are not particularly limited thereto and may be attached to a specified construction member of the structure B.

[0091] In the above embodiment, the temporary structure and the building construction method according to the present invention have been mainly described. However, the above embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. The present invention can be modified or improved without departing from the spirit of the present invention, and the present invention naturally includes equivalents thereof. [Explanation of symbols]

[0092] B frame B1 Beam B1a first beam B1b second beam B2 Floor Panel B3 Pillar B4 eave girder B5 Exterior wall panel C Corner H Temporary handrail (temporary structure) 1 First handrail 2 Second handrail 3 Connection parts 4 Netting materials 10, 110 First pillar body 11, 111 Base section 11a Base plate 11b Support pin 11c Rib 12, 112 Post section 12a, 112a First extension part 12b, 112b Second extension part 12c, 112c third extension 13, 113 Engagement part 20, 120 First connector 120a Engagement hole 21 Crosspiece 21a First Pipe 21b Second Pipe 22 Engaged part 22a First flat plate part 22b Second flat plate part 22c Engagement hole 23 Adjustment section 30 Second pillar body 31 Second base part (base part) 32 Second support section (support section) 33 Second engaging part (engaging part) 40 Second connector 41 Extension 41a First extension pipe 41b Second extension pipe 42 Post engaged part 42a Post engagement hole 43 Connection engaged part 43a Connection engagement hole 44 Direction adjustment section 50 Extension 51 First extension part 52 Second extension part 53 Third extension part 60 First connection part 61 First Clamp 62 Second Clamp 70 Second connection part 71 Clamp section 72 Protrusion

Claims

1. A temporary structure for preventing falls that is used during construction of a building and is attached to a skeleton of the building, A first handrail provided along a frontage direction of the building on one side of a corner of the building; A second handrail provided along a depth direction perpendicular to the frontage direction on the other side of the corner portion; A connecting member is provided at a position corresponding to the corner portion and connects the first handrail and the second handrail, The first handrail includes a pair of first support pillars attached to the body at an interval in the width direction and extending vertically from the body, and a first connector connecting the respective extending portions of the pair of first support pillars; The second handrail has a pair of second support pillars attached at an interval in the depth direction and extending longitudinally from the main body in the up-down direction, and a second connector connecting the respective extending portions of the pair of second support pillars, The temporary structure is characterized in that the connecting member has an extension portion that is arranged inside the first connector in the depth direction and extends along the direction in which the first connector extends, a first connection portion that is arranged on the extension portion and connects the first connector and the extension portion, and a second connection portion that is arranged on the extension portion and connects the second connector and the extension portion.

2. The first support body is attached to a first beam that extends in the frontage direction and constitutes the skeleton, The second support body extends in the depth direction to form the body, and is attached to a second beam arranged perpendicular to the first beam; The temporary structure described in claim 1, characterized in that when the first handrail is attached to the first beam and the second handrail is attached to the second beam, the first connector is positioned more inward than the pillar provided at the corner in the depth direction, and the second connector is positioned more inward than the pillar in the width direction.

3. Each of the first support column and the second support column has a base portion attached to the main body and a support portion extending elongately in the vertical direction from the base portion, the support portion has a first extension portion extending upward from the base portion, a second extension portion extending from a tip end of the first extension portion in a direction inclined with respect to the extension direction of the first extension portion, and a third extension portion extending upward from a tip end of the second extension portion, The first connector is connected to the third extension portion of each of the pair of first support columns, The second connector is connected to the third extension portion of each of the pair of second support columns, The temporary structure described in claim 1, characterized in that when the first handrail and the second handrail are attached to the main body, the first connector is positioned more inward than the base portion and the first extension portion in the depth direction, and the second connector is positioned more inward than the base portion and the first extension portion in the width direction.

4. The first connector is provided in a pair at an interval in the vertical direction, The extension portion has a U-shape and includes a first extension portion extending along a direction in which one of the first connectors extends, a second extension portion extending along a direction in which the other of the first connectors extends, and a third extension portion extending in a vertical direction and connecting the first extension portion and the second extension portion, The temporary structure described in claim 1, characterized in that the first connection portion is provided on the first extension portion and the second extension portion, respectively, connecting the first extension portion and the one of the first connecting bodies, and connecting the second extension portion and the other of the first connecting bodies.

5. The second connector is connected to the side surface of the second support body in abutting contact therewith, The temporary structure described in claim 1, characterized in that when the second handrail is attached to the main body, the second connector is positioned further inward than the pair of second support bodies in the width direction and is supported from the outside in the width direction by the pair of second support bodies.

6. an end portion of the second connector on the first connector side in the depth direction is connected in a state of being in contact with an upper surface of the connection member, The temporary structure according to claim 5 , wherein the second connector is supported from below by the connecting member.

7. A building construction method using the temporary structure according to any one of claims 1 to 6, a support body mounting step of mounting the pair of first support bodies and the pair of second support bodies to beams constituting the skeleton; a connector attachment step of attaching the first connector to the pair of first support columns and attaching the second connector to the pair of second support columns; a connecting member attachment step of attaching the connecting member to the first connecting body and the second connecting body; A pillar mounting step of mounting the pillar to the corner of the body, A building construction method characterized in that, in the connection member installation process, the first connection part is positioned inside the mounting portion of the column at the corner in the depth direction, and the second connection part is positioned inside the mounting portion of the column at the corner in the width direction.

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