JP2998583B2 - Curing method of atrium in building site - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for curing a stairwell, which can prevent an accident such as dropping or falling down from a stairwell of a building in the middle of construction.

[0002]

2. Description of the Related Art Inside a building during construction, in addition to a stairwell that exists even after the completion of the building, a stowage room for unloading floor openings provided for the convenience of construction and a staircase room for retrofitting a steel staircase. There is.

In order to prevent a fall accident or a fall accident from a stairwell, a temporary handrail is conventionally provided at the opening edge of the floor of each floor. FIG. 3 shows a mounting structure of a temporary handrail 1 for drop curing. The handrail 1 has a lower end via a clamp 2 on a side of a steel beam 4 which borders an opening edge corresponding to a blow-through portion A of the floor 3. Post 1a fixed to the edge in an upright state
And a handrail main body 1b provided on the upper portion of the column 1a at right angles to the pillar 1a via the connecting member 5.

[0004]

However, since the handrail 1 of this structure is fixed to the side edge of the steel beam 4 only at the lower side of the column 1a, the supporting strength is weak. When the load is applied to the handrail 1, it is necessary to increase the number of the columns 1a and to strengthen the support strength of the clamp 2 per each column 1a in order to prevent the handrail 1 from overturning and falling off. is there. However, when such a strengthening measure is taken, there is a disadvantage that it takes time to remove or attach the handrail 1 when it is attached or detached or diverted.

The present invention has been made to solve the above-mentioned drawbacks. It is an object of the present invention to carry out the fall curing of the above-mentioned stairwell without any anxiety in terms of strength, and to easily carry out installation, diversion, refilling work and the like. An object of the present invention is to provide a method of curing a stairwell in a construction site which can be performed.

[0006]

In order to achieve the above object, the invention according to claim 1 has a structure in which vertical and horizontal members are arranged in a grid shape by a height corresponding to several floors of a building and a dimension corresponding to an opening width of an atrium. A combined planar temporary framework is manufactured in advance, and then the vertical members of the framework are fixed to the opening edges of the floor of each floor in the atrium through a clamp.

In this case, it is desirable that the horizontal member is provided at the level of a handrail and used as a handrail (claim 2), or a curing net is previously stretched on the frame (claim 3).

[0008]

According to the method of claim 1, once a framework is created,
If this is set at the opening edge of the stairwell, curing for falling prevention on multiple floors can be performed simultaneously. Each vertical member is supported via a clamp at a plurality of positions above and below each floor in a state of being arranged at the opening edge of each floor. The clamps on each floor can be removed from the installation state, the framework can be lifted with a crane or the like, and the clamps can be tightened again on the upper floor to change the arrangement.

The method according to claim 2 is effective in preventing falling.

[0010] In the case of the method of claim 3, it is possible to omit the work of the extension work by retrofitting.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a curing method according to the present invention. In the figure, an opening constituting a stairwell A is formed in a floor slab 10 on each floor of a building, and this opening is bordered by a frame edge 12 such as a beam integrated with the floor slab 10.

There are three or four opening edges of the stairwell A depending on the shape thereof. For drop curing of three floors of the stairwell A, three or four opening edges are unitized in advance. Is closed by the temporary framework 14 of the first embodiment.

Each of the frames 14 has a plurality of vertical members 14a and horizontal members 1 made of a single pipe or the like, which have a height corresponding to the height of three floors above the ground and a size corresponding to the opening width of the atrium A.
4b are formed into a planar shape by combining them in a vertical and horizontal lattice shape and joining them with a joint.
That is, a curing net 16 for preventing falling of small articles is also stretched on the surface on the side of the stairwell A at the ground portion, and is integrated with the frame 14.

The lower part 2 of each vertical member 14a of the frame 14
A C-shaped clamp 18 is integrally provided at a position corresponding to the floor, and as shown in FIG.
8 is engaged with the frame edge 12, and the clamp bolt 18
The upper and lower portions of the vertical member 14a are fixed by tightening the support members a, so that even if each of the clamp members 18 has a small support strength, no overturning moment acts as a whole, and the support strength can sufficiently sunk the falling object load. Will be kept. Note that the dimensions and shape of the C-shaped clamp device 18 are frame edge 1
Various settings can be made according to the size of the second.

Although the uppermost floor may be joined by the clamp 18, it is sufficient for the present situation to have sufficient support strength, and since it takes time to attach and detach, only two floors are required.

Some of the horizontal members 14b are laid horizontally at a position higher than the height of the floor slab 10 on each floor when the frame 14 is installed. This height position is located at a position corresponding to the waist to the chest of the worker standing on the floor slab 10, and the horizontal member 14b can be used as a handrail as it is.

Therefore, the frame 14 assembled on the ground is transported to the lower part of the stairwell, lifted in the stairwell with a crane or the like (not shown) in a standing state, and pulled up to the floor slab 10 side when lifted to a fixed position, thereby forming a C-shape. When the clamp 18 is engaged and the clamp bolt 18a is tightened, the temporary work of the frame 14 is completed.

This operation is performed on three or four sides of the opening edge of the atrium. If the adjacent frames 14 are joined with a dedicated joint, a stronger connection is obtained.

Further, when the construction on the floor is completed and the floor slab construction on the upper floor is completed, the frame 14 becomes unnecessary on the floor. Is loosened, suspended by a crane and moved to the upper floor, where the engagement of the clamp 18 and the tightening operation of the clamp bolt are performed again to complete the refilling operation. Since the floor height of the building is usually constant, the positional relationship between the vertical and horizontal members 14a and 14b is exactly the same as that in FIG.

After the construction is completed, the frame 14 may be pulled up to the top floor and dismantled here, or may be suspended by a crane and dismantled on the ground.

[0021]

As described in detail in the above embodiments, in the method for curing a stairwell in a construction site according to the first aspect, once a frame is formed and set on the opening edge of the stairwell. Since it is possible to simultaneously carry out curing to prevent falls on multiple floors, there is an advantage that temporary work can be simplified.In addition, with the vertical members arranged at the opening edge of each floor, each vertical member can be clamped at multiple positions above and below each floor. Since it is supported through the support, there is an advantage of maintaining sufficient strength for preventing falling. Furthermore, the clamps on each floor can be removed from the installation state, the frame can be lifted with a crane or the like, and the clamps can be re-tightened on the upper floor again, thereby making it possible to change the arrangement.

Further, in the case of the method according to the second aspect of the present invention, falling can be prevented with a simple structure.

Further, in the case of the method according to the third aspect of the present invention, it is possible to omit the work of the extension work by retrofitting, and there is a preferable advantage in securing the safety of the work.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a curing method according to the present invention.

FIG. 2 is an enlarged sectional view of a portion B in FIG.

FIG. 3 is a cross-sectional view showing a conventional mounting structure of a temporary handrail for drop curing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Floor slab 12 Frame edge 14 Temporary frame 14a Vertical member 14b Horizontal member 16 Curing net 18 C-shaped clamp 18a Clamp bolt A

Continued on the front page (72) Inventor Mitsuyuki Yasuhara 35 Nishimachi, Chuo-ku, Kobe City, Hyogo Prefecture Inside Obayashi Corporation Kobe Branch (72) Inventor Shigekazu Sakurai 35 Nishimachi, Chuo-ku, Kobe City, Hyogo Prefecture Obayashi Corporation Kobe Branch (72) Inventor Tsuyoshi Watanabe 35, Nishimachi, Chuo-ku, Kobe, Hyogo Prefecture Inside Obayashi Corporation Kobe Branch (72) Inventor Kei Sakamoto 35, Nishimachi, Chuo-ku, Kobe City, Hyogo Prefecture Inside Kobe Branch, Obayashi Corporation (72) Inventor Tetsuro Ito 35, Nishimachi, Chuo-ku, Kobe City, Hyogo Prefecture Obayashi Corporation Co., Ltd. Kobe Branch (56) References JP-A-60-141259 (JP, A) J-58-44345 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) E04G 21/32

Claims (3)

(57) [Claims] 1. A temporary temporary frame in which vertical and horizontal members are combined in a grid pattern with a height corresponding to several floors of a building and a dimension corresponding to an opening width of a stairwell, is manufactured in advance, and then the vertical length of the frame is determined. A method for curing a stairwell in a building site, comprising fixing a member to an opening edge of a floor of each floor in the stairwell via a clamp. 2. The method according to claim 1, wherein the horizontal member is provided at a handrail level and used as a handrail. 3. The method according to claim 1, wherein a curing net is stretched on the frame in advance.