JP2000220291A - Work scaffolding for steel framed building structure and removing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily build up a scaffolding required to fit a cross beam member at a steel framed building structure site, at a low cost without danger. SOLUTION: Collar members 6 with bolt holes are fitted in the opposed positions near the beam member fitting position of a rectangular column 1 to be erected, so that the collar parts are put in the horizontally protruding state. Angles 7 of 1600 mm-1900 mm in length are bolt-fastened and fixed to the collar members 6 orthogonally to the lengthwise direction of the column 1 and in the state of holding the column 1. With the angles 7 as base members, the appropriate number of angles 7 of 500 mm-1900 mm in length are used to form a box frame, and a footboard is fitted to the lower face part of the box frame to constitute a scaffolding for fitting the beam member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction scaffold for steel building structures and a method for removing the same.

[0002]

2. Description of the Related Art At the work site of a scaffold for a steel building structure, it is necessary to provide a scaffold for joining or welding beams to an erect column. This scaffolding is performed exclusively as a post-installation work for columns that are erected, and is required at each of a number of connecting points.

[0003]

In the scaffold mounting operation described above, when a large number of columns enter into a complicated manner or when the height of the floor is gradually increased, various problems occur in the workability such as lifting of equipment, and the mounting operation is difficult. There are problems that are time-consuming and dangerous. In addition, a similar problem occurs in the removal operation after use. The present invention has been made to solve the above problems.

[0004]

According to the present invention, a flange member having a bolt hole is attached to an upright prism column at an opposed position near a beam material attachment so that the flange portion projects horizontally.
A mountain-shaped angle having a length of 1600 mm to 1900 mm is fixed to the member by bolting in a state perpendicular to the length direction of the column and sandwiching the angle. An appropriate number of angles of up to 1900 mm are used to form a sash, and a tread is attached to the underside of the sash to form a scaffold for mounting beams.

In the removal of the scaffold, the bolt and nut are removed at the flange member portion of the angled angle serving as the base material, and the angled angle and the flanged member are fixed to the removed portion from the outside. At the same time, the frame frame is attached to the lower overhang of the I-shaped cross section with the pulley using a U-shaped hooking tool, and the pulley In this state, use a rope to suspend the cell frame. In this state, pull the cord of the corded clip and remove the clip, then loosen the pulley rope to lower the cell frame, and then use the I-beam. By pulling the hook together with the rope outward together with the pulley, the hook can be easily removed manually.

[0006]

FIG. 1 is an explanatory view of an embodiment of the present invention.
2A and 2B are explanatory diagrams of a state in which a scaffold for construction is attached to a prism column. 1 is a prism column of a steel building structure, 2
Reference numeral denotes a frame of a construction scaffold provided at a position corresponding to the attachment of cross beams constituting the first or second floor of the prismatic column 1.

In the present invention, the installation of the scaffold for construction in the above-mentioned prism column 1 is carried out by firstly lowering the prism column 1 and appropriately combining a mountain angle having a length dimension of 500 mm to 1900 mm with a bolt. And the nuts are used to assemble into the square frame 2. Specifically, first, the prism column 1 is placed on a horizontal body using the mounts 3 and 3 having a fixed height, and Mounting position m of material 4
The flange member 6 with the bolt hole 5 is attached to the opposing portion in FIG.
reference)

[0008] With respect to the flange 6a of the flange member 6,
A pair of angled angles 7 and 7 having a length of 1600 mm to 1900 mm are attached using bolts 8 and nuts 9 in a state perpendicular to the longitudinal direction of the column. As material, length dimension is 500mm
The angle frame 7 having a length of about 1900 mm is appropriately selected and assembled with each other by using bolts and nuts.

At this time, in the construction of the box frame 2, the handrails and the like are formed according to the mounting direction of the beams so that a part of the handrails is removed as far as the safety surface is not impaired so as not to be in the way. You. Thus, the wire mesh plate 1
0 is detachably attached. (See Fig. 3)

In order to use a mountain angle exclusively as a constituent material of the above-mentioned frame 2 and to attach and detach it by using bolts and nuts, it is possible to use a lightweight, low-strength frame which is maintained at the required strength. In addition, it is intended to easily assemble and to facilitate removal and disassembly.

According to the present invention, as described above, the square frame 2 of the scaffold for construction is attached to a place corresponding to the attachment of the cross beam member 4 in each column 1 while each column is placed horizontally.
After that, this is fixed to the standing position of the lifting building structure by using a crane. Usually, the length of the column 1 is equivalent to the second floor, so if it becomes a higher level, it will be Try to add to the top. (Figure 1
reference)

[0012] By erection of the prism column 1,
In the present invention, the work of attaching the cross beam member 4 is immediately performed by using the square frame 2, so that the work can be quickly performed. FIG. 3 shows a state diagram of the work of attaching the beam 4. Next, the mounting of the beam member 4 is completed using the above-mentioned frame, and the removal of the frame is performed as follows.

First, as shown in FIGS. 4A and 4B, one end of each rope 12 is tied to a pair of opposed angled angles of the box frame 2 and each rope 12 is passed through a pulley 13 to hang the rope. Numeral 12 indicates the vicinity of the angle of contact with the angle of the mountain, which is turned once around the angle of the angle of the mountain to hang down.
This is to prevent the hanging rope 12 from coming off the pulley and to make a slow descent when lowering the box frame described later. The pulley 13 is attached to the lower flange portion 4a of the beam 4 via a pair of U-shaped hooking devices 14 via the ropes 10, and one of the hooking devices 14 is provided with the hooking device at the end of a later-described operation. A rope 10 is used which is used to remove the pulley 13 including.

Next, when the above operation is completed, the bolts 8 and nuts 9 of the angled angles 7, 7 serving as the base material attached to the location of the flange member 6 are removed, and the portions are removed as shown in FIG. The clip 16 is inserted from the outside into the angle of the angle and the flange member, so that temporary safety is ensured, and the rope 17 is attached to this.

Thus, the worker descends from the box frame 2 by using a ladder, and at the same time, as shown in FIG.
By pulling the rope 17 of the clip 16 slightly outward while holding the rope 12 hanging from the hand 3, the rope 17 is detached and pulled down. , The load of the cell frame 2 is applied via the pulley, and the cell frame 2 gradually descends by loosening the rope 12 sequentially.

On the other hand, when the box frame 2 reaches the floor, the pulley 13 is finally removed. In this case, the pulley 13 is engaged with the lower flange 4a of the beam 4 as shown in FIG. The U-shaped hooking device 15 that is stopped is easily detached from the flange 4a of the beam member 4 by pulling the hanging rope 15 attached to the hanging device 15 slightly outward. It can be dropped down.

On the other hand, the box frame 2 which has been lowered onto the floor surface as described above is disassembled by sequentially removing the bolts and nuts between the framed angles, and is easily taken out as a single piece. It can be used again, and it is used again on the outside ground, and it is similarly mounted in a horizontally laid state on a newly erected column, so that it can be repeatedly used.

[0018]

The present invention is configured as described above, and the square frame serving as a construction scaffold for the prismatic column is laid down before the prismatic column is erected, that is, the square frame is formed on the ground. By using bolts and nuts, it can be mounted in a simple and detachable configuration, and therefore can be performed quickly and without danger as compared with the conventional scaffolding for an upright column. This is a great way to improve workability. Also, the removal work after use without using any crane etc.
This can be easily performed manually.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

FIG. 2 is an explanatory view showing a state in which a square frame of a construction scaffold is attached to a prismatic column.

FIG. 3 is an explanatory view showing a state in which a beam member is attached using the square frame.

FIG. 4 shows the work of removing the box frame.

FIG. 5 shows the work of removing the box frame.

FIG. 6 shows the work of removing the box frame.

FIG. 7 shows a pulley removal operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 prismatic column 2 construction frame of construction scaffold 3 frame 4 beam 5 bolt hole 6 flange member 7 angle angle 8 bolt 9 nut 11 wire mesh plate 12 rope 13 pulley 14 hook 15 rope 16 pinching 17 rope 18 rope

Claims (2)

[Claims] 1. A flange member having a bolt hole is mounted at an opposed position near a beam material of a standing prism column so that the flange portion projects horizontally, and has a length of 160 mm.
A mountain-shaped angle of 0 mm to 1900 mm is fixed by bolting the column perpendicular to the length direction of the column and sandwiching the column-shaped angle.
Construction work for steel building structures, characterized by using a suitable number of mountain-shaped angles of 1 mm to 1900 mm to create a frame, and attaching a tread to the bottom of the frame to provide a scaffold for mounting beams. scaffold. 2. A cross section for removing a bolt and a nut at a flange member portion of an angled angle serving as a base material and holding the angled angle and a flanged member from the outside under a predetermined gap with respect to the removed portion. Attach the string-shaped holding device with a string, and attach the square frame to the lower overhang of the I-shaped cross section together with the pulley using a U-shaped hook, and use a rope for the pulley to The frame is hung, and in this state, after pulling the cord of the clipping device with a string to remove the clipping device, loosen the pulley rope and lower the truss frame. 2. The method according to claim 1, wherein the scaffold is detached by pulling the scaffold outward.