JP3235466U - Temporary floor structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temporary floor structure capable of reducing the amount of construction waste discharged. SOLUTION: A concrete floor 2 of a building is provided with an opening 3 formed in advance, and a first support member 10A and a second support member 10B made of a long member, and a first provisional member installed on the upper surface thereof. A floor plate 20A, a second temporary floor plate 20B, and a third temporary floor plate 20C are provided, and each end of the first support member and the second support member is supported by the first building frame 4A facing the opening, and each other. The end portion is supported by the second building frame 4B, and the first support member and the second support member are arranged at intervals in a direction orthogonal to the axial direction. [Selection diagram] Fig. 1

Description

The present invention relates to a temporary floor structure, particularly to a floor structure temporarily installed to cover an opening formed in the floor surface of a building under construction.

Patent Document 1 discloses an elevator installation method for forming an elevator hoistway by using a positioning jig for suspending a piano wire attached to the opening edge of the doorway on the uppermost floor that opens in the hoistway.

Japanese Unexamined Patent Publication No. 2004-026429

In order to form an elevator hoistway that moves up and down the building, it is necessary to provide an opening that serves as a hoistway on the floor of each floor.

Conventionally, in a reinforced concrete building, a concrete floor on each floor is formed on the entire surface, a hoistway unit is installed to decorate the inside of the hoistway, and then the hoistway portion is opened in the concrete floor. Therefore, the concrete lumps generated to form the openings are discharged as building waste. On the other hand, due to the recent increase in awareness of environmental issues, there is a fact that efforts for SDGs and ESG are also required at construction sites.

The present invention has been made in view of the above circumstances, and is to provide a temporary floor structure capable of reducing the amount of building waste discharged.

The first aspect of the present invention is a temporary floor structure, in which a concrete floor of a building has a preformed opening, and a first support member and a second support member made of a long member, and the first support member. A support member and a temporary floor plate installed on the upper surface of the second support member are provided, and each first end portion of the first support member and the second support member is a first building facing the opening. Supported by the skeleton, each second end portion of the first support member and the second support member is supported by the second building skeleton facing the first building skeleton, and the first support member and the second support member are supported. The members are characterized in that they are arranged at intervals in a direction orthogonal to the axial direction of the first support member and the second support member.

According to the present invention, it is possible to provide a temporary floor structure capable of reducing the amount of building waste discharged.

It is explanatory drawing which shows the completed state of the temporary floor structure which concerns on this embodiment. It is explanatory drawing which enlarged the overlap part of the temporary floor board. It is explanatory drawing which shows the structure of a support member. It is a figure which shows an example (installation on a floor beam) of the installation structure of a temporary floor structure. It is a figure which shows the other example of the installation structure of the temporary floor structure (installation by lowering one step to the floor beam). It is a figure which shows the other example (installation on a concrete floor) of the installation structure of a temporary floor structure. It is a figure which shows the other example of the installation structure of the temporary floor structure (installation by lifting from the floor beam).

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same components are designated by the same reference numerals throughout the drawings, and duplicate description is omitted.

(Overall structure)
FIG. 1 is an explanatory diagram showing a completed state of the temporary floor structure 1 according to the present embodiment.

The temporary floor structure 1 is a floor that is temporarily installed so as to cover the opening 3 provided in the concrete floor 2 of the building under construction. The opening 3 is provided, for example, in a concrete floor 2 where an elevator will be installed in the future. A first floor beam 4A and a second floor beam 4B made of H-shaped steel are arranged facing each other on the peripheral edge of the opening 3 in the concrete floor 2. The first floor beam 4A, the second floor beam 4B, and the concrete floor 2 correspond to the building frame arranged on the peripheral edge of the opening 3.

In the following description, one of the upper surfaces of the opening 3 in the horizontal plane is referred to as a width direction, and the other is referred to as a depth direction, a direction orthogonal to the width direction and the depth direction as a height direction.

Therefore, the first floor beam 4A and the second floor beam 4B extend along the depth direction in FIG. 1.

The temporary floor structure 1 includes a first support member 10A and a second support member 10B as a plurality of support members, and a first temporary floor plate 20A, a second temporary floor plate 20B, and a third temporary floor plate 20C as a plurality of temporary floor plates. Consists of including.

The first support member 10A and the second support member 10B are supported by the first floor beam 4A and the second floor beam 4B at intervals in the depth direction.

More specifically, the first ends of the first support member 10A and the second support member 10B are on the first floor beam 4A, and the second ends of the first support member 10A and the second support member 10B are on the first floor beam 4A. , It is detachably fixed to the second floor beam 4B by bolting or the like.

The first temporary floor plate 20A, the second temporary floor plate 20B, and the third temporary floor plate 20C are on the upper surfaces of the first support member 10A and the second support member 10B, and the first support member 10A and the second support member 10B are in the short side direction. They are arranged side by side in the width direction so as to match the axis direction of.

(Temporary floor board)
FIG. 2 is an enlarged explanatory view of the overlapped portion of the temporary floor board.

Each of the first temporary floor plate 20A, the second temporary floor plate 20B, and the third temporary floor plate 20C is a substantially rectangular plate-shaped member, and irregularities are formed in the plate thickness direction. As an example, the height of the uneven shape is 25 mm and the plate thickness is 0.8 mm, but the uneven shape and the plate thickness are not limited to these values.

Further, the adjacent temporary floor boards are arranged so that the ends of the temporary floor boards in the long side direction are overlapped with each other. Specifically, the first temporary floor plate 20A and the second temporary floor plate 20B (see FIG. 2), the second temporary floor plate 20B and the third temporary floor plate 20C (not shown in FIG. 2) are arranged so that the long side end portions are overlapped with each other. Will be done.

At that time, the width of the overlapping portion 25 of the temporary floor plate is adjusted according to the width of the opening 3.

In the overlapping portion 25, as shown in FIG. 2, the unevenness of the two temporary floor plates overlapping in the plate thickness direction (height direction) is engaged to prevent the two temporary floor plates from shifting in position.

(Support member)
FIG. 3 is an explanatory diagram showing the structure of the support member.

Since the first support member 10A, the second support member 10B, and the third support member 10C are the same member, they will be described below as the support member 10 and their structures will be described.

The support member shown in FIG. 3 includes a support portion 11 made of a square pipe, a lower frame 12 connected under the support portion 11, and a connecting portion 13 arranged between the support portion 11 and the lower frame 12. including.

The support portion 11 is made of a square pipe material.

The lower frame 12 and the connecting portion 13 are made of a long black leather iron material.

Both ends of the lower frame 12 in the axial direction form a first end 121a and a second end 121b to be welded to the lower surface of the support portion 11.

Further, the lower frame 12 has a first inclined portion 122a that is inclined downward from the first end 121a and toward the axial center of the lower frame 12, and a lower frame 12 that is downward from the second end 121b. A second inclined portion 122b that inclines toward the center in the axial direction and a horizontal portion 123 that connects the lower end of the first inclined portion 122a and the lower end of the second inclined portion 122b are provided.

The connecting portion 13 is spot-welded to the lower frame 12 and the support portion 11 alternately. In FIG. 3, reference numeral 131 indicates a spot welded portion between the connecting portion 13 and the supporting portion 11, and reference numeral 132 indicates a spot welded portion between the connecting portion 13 and the lower frame 12.

The lower frame 12 and the connecting portion 13 prevent the support portion 11 from bending and prevent the temporary floor plate 20 arranged on the support member 10 from tilting.

(Installed on floor beams)
FIG. 4 is a diagram showing an example of the installation structure of the temporary floor structure 1.

In FIG. 4, the support member 10 and the first floor beam 4A are detachably fixed by the L-shaped fixing bracket 30 and the bolt 31.

The end of the L-shaped fixing bracket 30 on the small piece side is welded to the lower surface of the support portion 11.

The flange 4Af of the first floor beam 4A is inserted between the large piece side of the L-shaped fixing bracket 30 and the lower surface of the support portion 11.

Further, the temporary floor plate 20 is placed on the upper surface of the support portion 11.

Then, the bolt 31 is passed through the holes provided in the temporary floor plate 20, the support portion 11, and the large piece portion side of the L-shaped fixing bracket 30, and these members are fastened and fixed.

The support member 10 and the second floor beam 4B are fixed by an L-shaped displacement prevention bending PL (PL: splice) between the support portion 11 and the outer surface of the flange 4Bf of the second floor beam 4B (opposite side surface of the web 4Bw). Plate) 35 is interposed.

Further, an L-shaped slip prevention bending PL36 is interposed between the support portion 11 and the inner surface (side surface of the web 4Bw) of the flange 4Bf of the second floor beam 4B.

Then, the temporary floor plate 20, the support portion 11 and the L-shaped deviation prevention bending PL36 are housed in the C-shaped blow-up prevention PL37, and the C-shaped blow-up prevention PL37 is fixed to the temporary floor plate 20 and the support portion 11 with a screw 38.

According to the above installation example, since the support member 10 and the temporary floor material 20 can be detachably fixed to the floor beam, the temporary floor structure 1 can be installed when necessary and easily disassembled when it is no longer needed. can. In addition, since it can be diverted to other places, the total amount of materials can be reduced.

Further, conventionally, when an elevator is installed in a building in the middle of construction having a concrete floor 2, it is first formed over the entire floor of the concrete floor 2, and after the interior work of the hoistway unit is completed, the concrete floor 2 is used. Since the opening 3 was partially formed, concrete lumps were generated as building waste.

On the other hand, if the temporary floor structure is used, the opening 3 can be formed in advance without pouring concrete into a part of the concrete floor 2, and the temporary floor structure 1 can be installed to carry out the interior work of the hoistway unit. .. Then, when the interior work of the hoistway unit is completed and the hoistway is formed, the temporary floor structure 1 can be removed. As a result, it is possible to reduce the amount of concrete lumps to be discarded compared to the past, and it is possible to carry out environmentally friendly construction work.

(Installed one step down on the floor beam)
FIG. 5 is a diagram showing another example of the installation structure of the temporary floor structure 1.

In FIG. 5, the support member 10 and the temporary floor 20 are installed below the concrete floor 2.

Specifically, the ends of the small pieces of the L-shaped fixing brackets 40A and 40B are welded to the inner surfaces of the flanges 4Af and 4Bf of the first floor beam 4A and the second floor beam 4B that support the concrete floor 2.

On the other hand, a fixed piece of the L-shaped misalignment prevention bending PL41A is welded to the first end 10a of the support portion 11. A blow-up prevention discard bolt 42A is fastened to the open piece orthogonal to the fixed piece in the L-shaped misalignment prevention bending PL41A.

A fixed piece of the L-shaped misalignment prevention bending PL41B is also welded to the second end 10b of the support portion 11. A blow-up prevention discard bolt 42B is fastened to the open piece of the L-shaped misalignment prevention bending PL41B.

The length of the support member 10 is longer than the width of the opening 3, and is formed to reach the length from the L-shaped fixing bracket 40A to the L-shaped fixing bracket 40B.

Then, the L-shaped misalignment prevention bending PL41A welded to the first end 10a of the support member 10 is attached to the L-shaped fixing bracket 40A, and the L-shaped misalignment preventing bending PL41B welded to the second end 10b is attached to the L-shaped fixing bracket. Support at 40B.

When the support member 10 is about to blow up, the blow-up prevention discard bolts 42A and 42B come into contact with the L-shaped fixing brackets 40A and 40B to restrict the upward movement of the support member 10. As a result, the support member 10 can be installed in the opening 3 by preventing the support member 10 from falling and blowing up without welding the support member 10 to the L-shaped fixing brackets 40A and 40B. Then, the temporary floor structure 1 can be installed by arranging the temporary floor boards 20 on it.

If the temporary floor structure 1 is no longer needed, the temporary floor plate 20 can be removed, and if the support member 10 is further displaced from the L-shaped fixing brackets 40A and 40B and pulled up from the opening 3, the temporary floor structure 1 can be removed. can.

(Installed on the concrete floor)
FIG. 6 is a diagram showing another example of the installation structure of the temporary floor structure 1.

In FIG. 6, the L-shaped fixing brackets 40A and 40B are fixed to the concrete floor 2 using bolts 43A and 43B, respectively. Other fixings are the same as in FIG. 5, so duplicate description will be omitted.

According to this example, if the L-shaped fixing brackets 40A and 40B cannot be attached to the first floor beam 4A and the second floor beam 4B, the L-shaped fixing brackets 40A and 40B are attached to the concrete floor 2. The temporary floor structure 1 can be installed.

(Installed by lifting from the floor beam)
FIG. 7 is a diagram showing another example of the installation structure of the temporary floor structure 1.

In FIG. 7, the support member 10 is installed at a position higher than the first floor beam 4A and the second floor beam 4B.

Specifically, as shown in FIG. 7A, end stop frames 50A and 50B are welded to the first floor beam 4A and the second floor beam 4B, respectively, and the end stop frames 50A and 50B support the end stop frames 50A and 50B. Supports the member 10 and the temporary floor plate 20.

Since the end stop frames 50A and 50B have the same configuration, when they are not distinguished, they are described as the end stop frame 50.

As shown in FIGS. 7 (b) and 7 (c), the end stop frame 50 includes a base 51, a rising portion 52, and an upper surface 53.

The base 51 is made of a flat plate and abuts on the flanges 4Af and 4Bf of the first floor beam 4A and the second floor beam 4B.

The end stop frame 50 is formed by, for example, bending a steel plate.

The rising portion 52 is a flat plate member that rises vertically from the base 51.

The upper surface 53 is a flat plate that protrudes from the upper end of the rising portion 52 in the direction opposite to the base 51.

The reinforcing bar portion 54 is a reinforcing bar member that reinforces the end stop frame 50. In the reinforcing bar portion 54, one end is welded to the upper side of the height half of the riser portion 52, and the other end is welded to the flange 4Af or the flange 4Bf, whereby the riser portion 52 and the flange 4Af or the flange are welded. Reinforce by connecting with 4Bf. As a result, the start-up unit 52 is prevented from collapsing.

In this example, the base 51 of the end stop frame 50A is welded to the outer surface of the flange 4Af of the first floor beam 4A.

Similarly, the base 51 of the end stop frame 50B is welded to the outer surface of the flange 4Bf of the second floor beam 4B.

A support member 10 and a temporary floor plate 20 are placed on the upper surface 53 of each of the end stop frames 50A and 50B, and the temporary floor plate 20, the support member 10, and the upper surface 53 of the end stop frame 50A are mounted on the temporary floor plate 20 with a screw 56A. The temporary floor plate 20, the support member 10, and the upper surface 53 of the end stop frame 50B are fixed with the screw 56B.

According to this example, the temporary floor plate 20 can be placed at a position higher than the first floor beam 4A and the second floor beam 4B. Therefore, for example, when performing interior work in the hoistway, work near the ceiling is also possible. It can be done easily.

1: Temporary floor structure 2: Concrete floor 3: Opening 4A: First floor beam 4Af: Flange 4B: Second floor beam 4Bf: Flange 4Bw: Web 10: Support member 10A: First support member 10B: Second support member 10C: Third support member 10a: First end 10b: Second end 11: Support portion 12: Lower frame 13: Connecting portion 20: Temporary floor plate 20A: First temporary floor plate 20B: Second temporary floor plate 20C: Third temporary floor plate Floor plate 25: Overlapping part 30: L-shaped fixing bracket 31: Bolt 36: L-shaped slip prevention bending PL
37: C-shaped blow-up prevention PL
38: Screw 40A: L-shaped fixing bracket 40B: L-shaped fixing bracket 41A: L-shaped slip prevention bending PL
41B: L-shaped misalignment prevention bending PL
42A: Blow-up prevention discard bolt 42B: Blow-up prevention discard bolt 43A: Bolt 43B: Bolt 50: End stop frame 50A: End stop frame 50B: End stop frame 51: Base 52: Start-up part 53: Top surface 54: Reinforcement Reinforcing bar portion 56A: Screw 56B: Screw 121a: First end 121b: Second end 122a: First inclined portion 122b: Second inclined portion 123: Horizontal portion 131: Spot welded portion 132: Spot welded portion

Claims (3)

It is a temporary floor structure
The concrete floor of the building has pre-formed openings and
A first support member and a second support member made of a long member,
A temporary floor plate installed on the upper surface of the first support member and the second support member, and
Equipped with
Each first end portion of the first support member and the second support member is supported by a first building frame facing the opening.
Each second end portion of the first support member and the second support member is supported by a second building skeleton facing the first building skeleton.
The first support member and the second support member are arranged at intervals in a direction orthogonal to the axial direction of the first support member and the second support member.
Temporary floor structure characterized by this. In the temporary floor structure according to claim 1,
A plurality of the temporary floor boards are used, and
The temporary floor plate is a substantially rectangular plate-shaped member, and irregularities are formed in the plate thickness direction.
The plurality of temporary floor plates are arranged on the upper surfaces of the first support member and the second support member so that the short side direction of the temporary floor plate coincides with the axial direction of the first support member and the second support member. Placed,
The adjacent temporary floor boards are arranged so that the ends of the temporary floor boards in the long side direction overlap each other and the unevenness of the plurality of overlapping temporary floor boards is meshed with each other.
Temporary floor structure characterized by this. In the temporary floor structure according to claim 1,
The building frame is the concrete floor or a floor beam that supports the concrete floor.
Temporary floor structure characterized by this.

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