JP2004270337A - Scaffolding for support work and building method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rapidly move scaffolding in an assembled state without assembling/disassembling the scaffolding depending on a support work place, in terms of the scaffolding for performing support work for joining a beam material, constituting a skeleton structure, to a support. <P>SOLUTION: Supporting rods 19, which protrude from both sides of the beam materials 12a-12c, are arranged in the skeleton structure, and first and second unit frame bodies 21 and 22 are mounted at both ends of the supporting rod 19. Each of the frame bodies 21 and 22, which is pin-connected to the supporting rod 19, comprises a vertical bar 23 which is vertically elongated across the beam materials 12a-12c, a frame 30 for the scaffolding, which is mounted on the vertical bar 23 in a vertically separated state, and a scaffolding board which is mounted on the frame 30. When the scaffolding is moved to another support work place, a wire 46 is hooked on the frame bodies 21 and 22, so that the scaffolding can be lifted and moved horizontally. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a support work scaffold and a method for constructing a support work scaffold used when joining beams for building a beam of a steel structure building.
[0002]
[Prior art]
Many mid- to high-rise buildings have a skeletal structure having vertical columns or struts and beams extending horizontally and connected to the struts. Steel materials such as a shape steel, a shape I steel, and a steel pipe having a quadrangular cross section are used. Such a skeletal structure is constructed not only for a building constructed on the ground but also for constructing an underground structure such as an underground mall, and fixed beam members are connected to each other.
[0003]
Fastening of the beam to the column is performed by welding or bolts, and there are two cases: connecting the column directly to the beam, and connecting the beam body to a joint member called a bracket that has been welded to the side surface of the column in advance. In the case where a joint member is used, the joint member is an end of the horizontal beam, and the beam is formed by the joint portion and the beam main body. In any case, a pillar work scaffold is attached so that the worker can join the beam material to the pillar using welding, bolting, or the like, that is, perform the pillar work.
[0004]
2. Description of the Related Art Conventionally, when a beam is welded or bolted to a support to build a beam of a skeleton structure of a middle- or high-rise building, a support work scaffold is attached to the support (patent). Reference 1).
[0005]
[Patent Document 1]
Japanese Patent No. 2522748 [0006]
[Problems to be solved by the invention]
However, the conventional pillar working scaffold is designed to assemble members for each work place and attach it to the pillar, and after the worker performs the pillar work using the scaffold, disassemble the scaffold and perform other work. It is transported to the support work sites, and it is necessary to assemble a scaffold for each support work site. As described above, conventionally, the scaffold has to be disassembled and assembled for each support work site, and the work requires not only a long time but also a large number of manual operations.
[0007]
An object of the present invention is to move to a predetermined strut work place quickly in an assembled state without disassembling and assembling a scaffold when performing another strut work after the strut work at a predetermined place is completed. Is to get it.
[0008]
[Means for Solving the Problems]
The pillar working scaffold of the present invention is a pillar working scaffold for building a framework structure having a plurality of vertical pillars and a beam member extending horizontally and connected to the pillar, and At least two support bars protruding from both sides of the beam on the upper surface of the beam; and a plurality of the beam members extending vertically and rotatably pin-connected to one end of each of the support bars. A first bar having at least two vertical bars traversing the vertical bar, a plurality of pairs of scaffold frames mounted on each of the vertical bars so as to be vertically separated from each other, and a scaffold plate mounted on each of the scaffold frames. A unit frame, at least two vertical bars that are rotatably pin-connected to the other end of each of the support bars, extend in the vertical direction, and cross a plurality of the beam members; Attached vertically A plurality of pairs of scaffolding frames, and a second unit frame having a scaffolding plate mounted on each of the scaffolding frames, and expanding the lower end of each of the first and second unit frames. It is characterized in that it is turned in the direction and moved in the vertical direction.
[0009]
The support work scaffold of the present invention is characterized in that it has a vertical movement mechanism that engages the first and second unit frames with the upper ends of the respective vertical bars and lifts the respective unit frames. I do.
[0010]
The support work scaffold of the present invention is characterized in that a ladder is mounted between the vertically adjacent scaffold frames.
[0011]
A method for constructing a scaffold for supporting work according to the present invention is a method for constructing a scaffold for supporting work for constructing a skeletal structure having a plurality of vertical struts and a beam extending horizontally and connected to the strut. A step of arranging at least two support rods protruding from both sides of the beam on the upper surface of the beam, and being rotatably pin-connected to one end of each of the support rods, At least two vertical bars extending across the plurality of beam members, a plurality of pairs of scaffold frames vertically mounted on the respective vertical bars, and a plurality of scaffold frames mounted on the respective scaffold frames. Assembling a first unit frame having a scaffold plate, and at least two of the support bars are rotatably pin-connected to the other ends of the support rods, extend vertically and cross the plurality of beam members. Vertical bars, each After the step of assembling a second unit frame having a scaffolding plate which is mounted on the vertical bar at a distance in the vertical direction, and after the joining operation of the plurality of steps of the beam members and the columns is completed, the first and second steps are performed. And a rearrangement step of suspending and moving the second unit frame.
[0012]
In the method for constructing the support work scaffold and the support work scaffold of the present invention, the first and second unit frames are mounted so as to straddle both sides of the beam of the skeletal structure, and a plurality of the unit frames are provided from both sides of the beam. The strut connection work of the floor can be performed. Thereby, the support work can be performed in a short time, and after the support work of the predetermined portion is completed, each lower end portion is expanded while the first and second unit frames are assembled, By moving to another support work location, support work can be performed quickly at another support work location.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0014]
FIG. 1 is a plan view showing a state in which a support work scaffold of the present invention is attached to a skeletal structure, FIG. 2 is a side view seen from the direction of arrow A in FIG. 1, and FIG. FIG. 4 is a cross-sectional view taken along a line B, and FIG. 4 is an enlarged perspective view showing a portion C in FIG.
[0015]
FIGS. 1 to 4 show a skeletal structure 10 under construction. FIG. 1 shows four struts 11 a to 11 d constituting the skeletal structure 10 and struts 11 a to 11 h extending horizontally and adjacent to each other. 11d and the beam member 12 for interconnecting 11d are shown. FIG. 3 shows three beams 12a to 12c, which are connected to the column 11a at an upper and lower interval, respectively.
[0016]
Each beam member 12 is composed of a joint member 13 previously fixed to the columns 11a to 11d in a factory and a beam body 14 connected between the joint members 13 of the columns 11a to 11d adjacent to each other. After the beam main body 14 is temporarily fastened to the joint member 13 with bolts using an attachment plate, the beam main body 14 and the joint member 13 are joined by bolts. However, the beam member 12 may be directly joined to the columns 11a to 11d without using the joint member 13. In FIG. 1, the joint between the joint member 13 and the beam main body 14 is denoted by reference numeral 15.
[0017]
When performing the pillar work for fastening the temporarily fixed beam main body 14 and the joint member 13 with bolts, the pillar working scaffold 20 is disposed on the skeletal structure 10. When building a building such as a condominium or office building, a predetermined number of pillar working scaffolds 20 are attached to the skeletal structure 10 in correspondence with the necessary portions of the pillars 11a to 11d and the portions where the beam members 12 are connected. Will be attached. In FIG. 1, of the supports 11 a to 11 d constituting the skeletal structure 10, a support work scaffolding 20 is attached to perform a joining operation on a joint 15 between the beam body 14 and the joint member 13 of the skeletal structure 10. FIG. A joint member 13 is fixed in advance to the four surfaces of the column 11a shown in FIG. 1 at the factory, and four beam bodies 14 are joined to the four joint members 13 and the respective beam bodies 14 Is temporarily fixed to the joint member 13, and four sets of support work scaffolds 20 are attached to the respective beam members 12 in order to join the four joint portions 15.
[0018]
Each of the support work scaffolds 20 has a support rod 19 disposed on the upper surface of the beam member 12 of the skeletal structure 10, and first and second unit frames 21 and 22. 19 is formed by connecting two bars in parallel. The first unit frame body 21 extends in the up-down direction and is rotatably pin-connected to one end of the support bar 19. The first unit frame 21 is mounted on the vertical bar 23 at a distance from the up-down direction. And a plurality of pairs of scaffold frames 30. The second unit frame 22 has the same structure as the first unit frame 21 shown in FIG. 2, and the members forming the second unit frame 22 in FIGS. The same numbers are assigned to the members that make up the first unit frame 21. The vertical bars 23 constituting the first and second unit frame members 21 and 22 are not limited to the two bars shown in FIG. The number 30 is not limited to the number shown in FIGS. 1 and 2, but may be any number. Although not shown, a safety net may be attached to the outer surfaces of the first and second unit frames 21 and 22.
[0019]
The plurality of vertical bars 23 shown in FIGS. 2 and 4 are formed by connecting a plurality of column members 25 having a predetermined length, and can be disassembled and assembled.
[0020]
FIG. 5A is a side view showing the column member, FIG. 5B is a front view showing the column member, and FIG. 5C is a perspective view showing a part of the column member. The column member 25 is formed by inverting two channel members 25a each having a predetermined length in a U-shaped cross section and fixing them by spacers 25b welded to the respective channel members 25a.
[0021]
A joint member 25c having a U-shaped cross section is fixed to one end of one channel member 25a and the other end of the other channel member 25a, and a mounting hole 27a is formed in each joint member 25c. At the other end of one channel member 25a and one end of the other channel member 25a, mounting holes 27b are formed corresponding to the mounting holes 27a, respectively. Thereby, the joint members 25c of the column members 25 can be connected to each other, and the vertical bar 23 having a predetermined length can be formed. Mounting holes 27 are formed on the facing surfaces of the respective channel members 25a at predetermined intervals in the longitudinal direction. By attaching the joint member 25c with a bolt penetrating the attachment hole 27 and connecting the column member 25 via the joint member 25c, the required length of the vertical bar 23 can be easily assembled at the construction site.
[0022]
The vertical bar member 23 is formed by connecting an arbitrary number of column members 25 and attaching a top hanging member 24 to the distal end of the connected column members 25 as shown in FIG. A horizontal bar 26 extending in the horizontal direction is connected to the top hanging bracket 24. The horizontal bar 26 is, like the column member 25, inverted two channel members having a U-shaped cross section, and respectively. Is formed by fixing with a spacer which is welded to the base.
[0023]
FIG. 6 is a perspective view showing a scaffold outer frame, that is, a scaffold frame 30 attached to each of the unit frames 21 and 22. As shown in FIG. 6, the scaffold frame 30 is formed by two handrail frames 31 and 32 and a connecting bar 33 that connects these handrail frames 31 and 32. A plurality of horizontal bars 34 are attached to 32 at predetermined intervals in the vertical direction. A scaffold plate 35 is attached to a horizontal bar 34 provided on each of the handrail frames 31 and 32.
[0024]
FIG. 7A is a plan view showing a scaffold plate, and FIG. 7B is a front view showing the scaffold plate. A member called a cloth plate is used as the scaffold plate 35. As shown in FIGS. 7A and 7B, the scaffolding plate 35 is provided with a cloth plate portion 37 on the upper surface of the frame portion 36, and is spaced apart in the width direction on both longitudinal end surfaces of the frame portion 36. A hook 38 is provided, and the hook 38 is detachably attached to the scaffolding frame 30 by hooking the hook 38 on the horizontal bar 34 of the scaffolding frame 30.
[0025]
The frame portion 36 may be manufactured by bending, punching, or pressing a thin metal plate such as iron, or may be configured by combining a square pipe or a round pipe. Further, in this embodiment, a metal mesh such as an expandable metal is used for the cloth plate portion 37. However, a perforated plate having a large number of holes formed on the surface of the metal plate, or a large number of minute holes are formed on the surface of the metal plate. It is also possible to use one having a rough pattern.
[0026]
FIG. 8 is a perspective view showing a plurality of pillar members 25 connected to each other and a top hanging member attached to an end of the pillar members 25 to form the vertical bar 23. As shown in FIG. 8, the top suspension metal fitting 24 is rotatably pin-connected to a support bar 19 arranged on the upper surface of the beam member 12 in the width direction thereof by a bolt 41 or a pin. A plurality of mounting holes 42 through which bolts 41 penetrate are formed in the support bar 19 formed by connecting the two bar members 19a in parallel, and the position at which the top hanging bracket 24 is connected is defined by a beam member. Twelve width dimensions can be changed.
[0027]
A plurality of mounting holes 43 are formed in the top hanging member 24 for attaching the same to the column member 25. The top hanging member 24 is connected to the column member 25 using pins or bolts, so that The vertical bar 23 can be assembled with the top hanging metal 24.
[0028]
A hook 44 to which a wire of a vertically moving mechanism such as a crane is hooked is attached to the top hanging bracket 24, so that the first and second unit frame bodies 21 and 22 can be vertically moved integrally by the crane. it can. When the wires are hooked on the hooks 44 and the unit frame members 21 and 22 are lifted, the top suspending brackets 24 rotate around the bolts 41 in the direction in which the upper ends approach each other, and the rotation limit position is reached. A positioning member 45 protruding toward the other hook hanging fitting 24 is attached to the upper end of the hook hanging fitting 24 in order to regulate the hook hanging fitting 24.
[0029]
Next, a procedure for constructing the support work scaffolding 20 of the present invention and performing construction work will be described. FIG. 9 is an explanatory view showing a state in which the supporting work scaffold 20 is attached to the skeletal structure 10 and predetermined supporting work has been completed, and FIG. 10 is an explanatory view showing a state in which the supporting work scaffold 20 starts to move upward. FIG. 11 is an explanatory view showing a state in which the ascending movement of the support work scaffolding 20 has been completed, and FIG. 12 is an explanatory view showing a state in which the support work scaffold 20 of the present invention has been replaced with the next support work place. FIG.
[0030]
First, in order to assemble the supporting work scaffolding 20 at a construction site, a plurality of pillar members 25 shown in FIG. A vertical bar 23 is formed. When the first unit frame 21 is formed by two vertical bars 23 as shown in the drawing, the two vertical bars 23 and the two support bars 19 are connected. The top hanging members 24 project from both sides of the beam member 12 and are connected to support bars 19 arranged on the upper surface of the beam member 12. After the assembly of the first and second unit frame members 21 and 22 is completed by the vertical bar 23 and the support bar 19, a plurality of pairs of scaffold frames 30 that are vertically mounted on the vertical bar 23 are separated from each other. Installing. Each scaffolding frame 30 is attached to the vertical bar 23 by using a mounting hole 27 formed in the column member 25 constituting the vertical bar 23 and a pin fitted thereto, so that the position where the support work is performed is performed. Can be attached to any position in the vertical direction. After the scaffold frame 30 is mounted in this way, the scaffold plate 35 is mounted on the horizontal bars 34 of the handrail frames 31 and 32.
[0031]
After the work of joining the beam members 12 to the columns 11a to 11c shown in FIGS. 2 and 3, that is, the column operation, the columns for the upper floors are further connected to the columns 11a to 11d. . In order to perform the support work on the support for the upper floor joined to the supports 11a to 11d, first, as shown in FIG. Next, the wire 46 is moved up by the crane. As a result, as shown in FIG. 10, both the unit frames 21 and 22 rotate about the bolt 41 so that the lower ends thereof are widened, and the vertical bar 23 is separated from the beam 12. become.
[0032]
In this state, the two unit frames 21 and 22 can be integrally moved up and down by the crane, and as shown in FIG. The second unit frames 21 and 22 are lifted. Then, after the joint member 13 is temporarily fixed to the column by bolts, as shown in FIG. 12, the first and second unit frames 21 and 22 reach a position where the support bar 19 contacts the beam material for the upper floor. Is lowered.
[0033]
As described above, the support work scaffold 20 of the present invention is used when performing the support work for fastening the joint member 13 and the beam main body 14 which are fixed in advance to the support constituting the skeletal structure 10 by the bolts. By using the support work scaffolding 20 having the first and second unit frames 21 and 22 having a length corresponding to a plurality of floors, the work for the plurality of floors is performed from both sides of the beam 12 in a short time. The first and second unit frames 21 and 22 need not be disassembled and assembled after the support work of the predetermined portion is completed, and the first and second unit frames 21 and 22 need not be disassembled and assembled. The first and second unit frames 21 and 22 can be quickly moved to an arbitrary position of the skeletal structure 10 by rotating the lower ends of the unit frames 21 and 22 so that the lower ends of the unit frames 21 and 22 are expanded in the assembled state. Can be installed .
[0034]
As shown in FIG. 4, a ladder 47 is attached to the scaffold frame 30 located on one side of the first and second unit frames 21 and 22. Each ladder 47 is to be attached to a vertically adjacent scaffolding plate 35, and a hatch 48 is provided on the scaffolding plate 35 so as to correspond to a portion where the ladder 47 is attached, as shown by a broken line in FIG. 1. become. Therefore, the worker can go up and down using the ladder 47 inside the first and second unit frames 21 and 22, and the worker can go up and down safely.
[0035]
The present invention is not limited to the above-described embodiment, and it goes without saying that various changes can be made without departing from the scope of the invention. For example, the sizes of the first and second unit frames 21 and 22 and the number of steps of the scaffold plate 35 mounted on the first and second unit frames 21 and 22 can be arbitrarily set according to the construction site. it can. Further, in this embodiment, a crane is used as the up-down movement mechanism. However, the scaffold may be moved up and down by using another up-down movement mechanism such as a hoist. Further, a chain or a rope may be used instead of the wire 46. Further, in the above-described embodiment, the case where the support work scaffold 20 is moved to the upper floor is described. However, the scaffold may be moved to the lower floor or may be moved horizontally.
[0036]
FIG. 1 shows four sets of support work scaffolds 20, and FIG. 2 shows one of them. The other three sets of support work scaffolds 20 have the same structure. Also, the strut work can be performed for the struts 11b to 11d shown in FIG. 1 by using the same scaffold 20 for strut work. Further, the support work for each support may be performed using one set of the support work scaffolding 20.
[0037]
【The invention's effect】
As described above, according to the present invention, when performing a column work for joining a beam to a column in order to connect the beam to a column constituting a skeletal structure, the length of a plurality of floors is required. In the state where the first and second unit frames are mounted, the support work can be performed on the scaffold plate mounted thereon. After the predetermined support work is completed, the unit frame can be removed from the skeletal structure with the lower end of the unit frame widened, and the scaffold can be moved to another support work location. Accordingly, there is no need to disassemble and assemble the first and second unit frames in accordance with the work location of the support, and the scaffold can be quickly mounted on any part of the skeletal structure with the first and second unit frames attached. Can be installed.
[Brief description of the drawings]
FIG. 1 is a plan view showing a state in which a scaffold for supporting a pillar according to the present invention is attached to a skeletal structure.
FIG. 2 is a side view as seen from the direction of arrow A in FIG.
FIG. 3 is a sectional view taken along a line BB in FIG. 1;
FIG. 4 is an enlarged perspective view showing a portion C in FIG. 2;
5A is a side view showing a pillar member, FIG. 5B is a front view showing the pillar member, and FIG. 5C is a perspective view showing a part of the pillar member.
FIG. 6 is a perspective view showing a scaffold frame.
FIG. 7A is a plan view of a scaffold plate, and FIG. 7B is a front view of the scaffold plate.
FIG. 8 is a perspective view showing a top hanging member.
FIG. 9 is an explanatory view showing a state in which a supporting work scaffold is attached to a skeletal structure and predetermined supporting work is completed.
FIG. 10 is an explanatory view showing a state in which the ascending movement of the pillar working scaffold is started.
FIG. 11 is an explanatory view showing a state in which the ascending movement of the support work scaffold has been completed.
FIG. 12 is an explanatory view showing a state in which the scaffold for supporting work of the present invention has been replaced with the next supporting work place.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Skeletal structures 11a-11d Prop 12 Beam 13 Joint member 14 Beam main body 15 Joint 19 Support pole 20 Scaffold 21 for post work First unit frame 22 Second unit frame 23 Vertical bar 24 Top hanging fitting 25 Column member 25a Channel member 25b Spacer 25c Joint member 26 Horizontal bar 26a Channel member 26b Spacer 26c Joint member 27 Mounting hole 27a Mounting hole 27b Mounting hole 30 Scaffolding frames 31, 32 Handrail frame 33 Connecting bar 34 Horizontal bar 35 scaffold plate 36 frame body 37 cloth plate 38 hook 41 bolt 42 mounting hole 43 mounting hole 44 hook 45 positioning member 46 wire 47 ladder 48 hatch

Claims (5)

A pillar working scaffold for building a skeletal structure having a plurality of vertical pillars and beams extending horizontally and connected to the pillars,
At least two support rods protruding from both sides of the beam on an upper surface of the beam;
At least two vertical bars that are rotatably pin-connected to one end of each of the support bars, extend in the vertical direction, and cross the plurality of beam members, and are attached to each of the vertical bars at a distance in the vertical direction. A plurality of pairs of scaffold frames, and a first unit frame body having a scaffold plate attached to each of the scaffold frames,
At least two vertical bars that are rotatably pin-connected to the other end of each of the support bars, extend in the vertical direction, and cross the plurality of beam members, and are vertically separated from each of the vertical bars. A plurality of pairs of scaffold frames to be mounted, and a second unit frame having a scaffold plate mounted on each of the scaffold frames,
A support work scaffold, characterized in that the lower end of each of the first and second unit frames is pivoted in a direction in which it expands and moves vertically. 2. The support work scaffold according to claim 1, further comprising a vertical movement mechanism that engages with upper end portions of the first and second unit frames and lifts each of the unit frames. scaffold. The support work scaffold according to claim 1 or 2, wherein a ladder is mounted between the vertically adjacent scaffold frames. A method of constructing a scaffolding work for constructing a skeleton structure having a plurality of vertical struts and a beam extending horizontally and connected to the struts,
Arranging at least two support bars protruding from both sides of the beam on the upper surface of the beam;
At least two vertical bars that are rotatably pin-connected to one end of each of the support bars, extend in the vertical direction, and cross the plurality of beam members, and are attached to each of the vertical bars at a distance in the vertical direction. Assembling a plurality of pairs of scaffold frames, and a first unit frame having a scaffold plate attached to each of the scaffold frames;
At least two vertical bars that are rotatably pin-connected to the other end of each of the support bars, extend in the vertical direction, and cross the plurality of beam members, and are vertically separated from each of the vertical bars. Assembling a second unit frame having a scaffold plate to be mounted;
A step of suspending and moving the first and second unit frames after the joining operation of the plurality of beams and the columns is completed, and constructing a scaffold for column operation. Method. 5. The method of constructing a scaffold for supporting work according to claim 4, wherein the scaffold is moved upward or horizontally in the rearrangement movement.

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