JP2747817B2 - Building method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building method for arranging a fire-resistant interlayer between a floor and an outer wall of a building, in order to prevent a fire occurring on a lower floor from spreading to an upper floor.
Particularly, the present invention relates to a building method capable of omitting an iron plate for stopping concrete for preventing concrete from flowing out from a peripheral edge of a floor base material.

[0002]

2. Description of the Related Art In general, in a high-rise building, an outer wall construction method has been adopted in which panels are continuously arranged vertically and horizontally on a wall, such as a curtain wall panel made of PC, with a narrow gap therebetween. .

By the way, in this type of outer wall construction method,
For example, between the end face of the floor constructed by casting concrete on the floor base material formed by the deck plate and the outer wall,
Since a predetermined gap is formed due to its structure, it is necessary to close this gap with an interlayer material, and in order to prevent a fire that occurred on a lower floor from spreading to an upper floor, this interlayer is required. The material must be fire resistant.

Conventionally, therefore, a lath net is inserted and fixed in a U-shaped groove between the floor and the outer wall, and a non-combustible material such as rock wool is filled in the U-shaped groove to form a fire-resistant layer. Material is used, but this refractory interlayer material is
Since it is necessary to fill the U-groove formed by the lath net with a noncombustible material at the site, the work is not easy and there is no danger in the work, and the work can only be performed after the outer wall is installed. For the part in the shadow of,
The work may not be possible or the construction may be insufficient, and the desired fire resistance may not be obtained.

Accordingly, the present inventors have previously described the technique disclosed in Japanese Utility Model Laid-Open No. 7-42.
No. 391 (Jpn. Pat. Appln. KOKAI Publication No. 5-74507), it can be installed before the outer wall is installed, and the installation is easy and stable fixing force is obtained. A refractory interlayer material that is unlikely to occur was proposed.

[0006]

The refractory interlayer material proposed by the present inventors has a great many advantages as described above, but after the floor is constructed, that is, on the floor base material. There is a problem that the fireproof interlayer material cannot be installed on the floor side or the outer wall side only after concrete is cast on the floor and the floor is constructed.

By the way, when concrete is poured onto the flooring material, an iron plate for fixing concrete, that is, a so-called concrete stopper, is provided on the periphery of the flooring material in order to prevent the concrete from flowing out from the periphery of the flooring material. An iron plate will be installed, and then concrete will be cast on the flooring material.If the gap between the flooring material and the outer wall can be closed with a fire-resistant interlayer material before casting the concrete, the concrete will be stopped. The iron plate can be omitted to shorten the construction period and reduce costs,
Further, it is expected that it is not necessary to reduce the welding work and make the refractory interlayer material resistant to welding sparks.

The present invention has been made in view of the above situation, and provides a building method capable of saving labor, shortening the construction period, reducing the weight of a building, and reducing costs by omitting an iron plate for stopping concrete. The purpose is to:

Another object of the present invention is to provide a building method in which the construction of the refractory interlayer material is easy and a stable fixing force can be obtained.

[0010] Another object of the present invention is to provide a construction method in which the refractory interlayer material is not likely to be damaged by welding sparks even when welding is performed on an upper floor.

Another object of the present invention is to provide a building method capable of further stabilizing the installation state of a refractory interlayer material.

Still another object of the present invention is to provide a building method capable of installing a refractory interlayer material in an optimum manner according to the condition of the site.

[0013]

According to the present invention, there is provided a building method for arranging a refractory interlayer material between a floor and an outer wall of a building. Do not cast concrete on at least the outer wall side end of the floor covering material to be constructed, and in this state, install a fire-resistant interlayer material between the floor covering material and the outer wall, and place the concrete between the floor covering material and the outer wall. Is closed, and then concrete is poured on the floor base material. This makes it possible to make the refractory interlayer material function as a member for stopping concrete, and omit the iron plate for stopping concrete.

[0014] The present invention also provides a core member formed of a non-combustible material into a rod shape having a flat surface at least on a surface facing an outer wall; a jacket material surrounding the core material; And an adhesive layer for positioning and fixing to the outer wall. And this gives
The construction is easy and a stable fixing force can be obtained.

According to the present invention, there is further provided a positioning member in the form of a square bar which is attached to an outer wall at a position above the jacket material, and which has at least a predetermined rigidity and resistance to welding spark. It is characterized by being made to be. By holding the positioning material, it becomes easier to apply the refractory interlayer material and it is possible to obtain a stable fixing force, and the spark of welding performed on the upper floor falls on the refractory interlayer material. In addition, there is no possibility that the jacket material is damaged by the spark.

The present invention is also characterized in that a fixing material for fixing the lower end of the covering material on the floor base material side to the floor base material is provided in the refractory interlayer material. This makes it possible to further stabilize the installation state of the refractory interlayer material.

The present invention is also characterized in that the refractory interlayer material is attached between the outer wall and the floor covering after the outer wall is installed. This makes it possible to easily position and install the refractory interlayer material.

The present invention is further characterized in that the refractory interlayer material is attached to the outer wall before the outer wall is installed. By this, if the outer wall is installed, the installation of the refractory interlayer material is also completed, and it is possible to save labor at a high place on the site.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIGS. 1A to 1C show a construction method using a fire-resistant interlayer material according to a first embodiment of the present invention.
In the drawing, reference numeral 1 denotes a floor base material formed of a deck plate or the like, reference numeral 2 denotes an outer wall formed of a curtain wall panel or the like, and a gap G having a predetermined width is provided between the floor base material 1 and the outer wall 2. Is formed.

1 is provided between the floor base material 1 and the outer wall 2.
As shown in (b), a refractory interlayer material 3 is installed, and the gap G is closed by the refractory interlayer material 3. The refractory interlayer material 3 is installed on the floor base material 1. Thereafter, as shown in FIG. 1 (c), concrete 4 is cast and the floor 5 of the building is constructed.

As shown in FIGS. 2 and 3, the refractory interlayer material 3 comprises a square rod-shaped core material 6 made of inorganic fibers such as ceramic fibers, rock wool, or asbestos, and having elasticity. And a jacket 7 made of, for example, a polyethylene film, which completely covers the outer surface of the core 6. The width W ₁ of the core 6 including the jacket 7 is the width of the gap G. Is set to about 1.5 to 2 times. Then, when the refractory interlayer material 3 is installed between the floor base material 1 and the outer wall 2, a part of the core material 6 is placed on the floor base material 1, so that the core material 6 is cast. Even if the core material 6 is compressed by the concrete 4, the flow of the concrete 4 from the gap G can be completely prevented.

FIGS. 2 and 3 show the upper surface of the jacket 7.
As shown in FIG. 2, a positioning member 8 having, for example, a square rod shape is fixedly provided, and the refractory interlayer member 3 is easily, accurately and firmly attached to the outer wall 2 by gripping and handling the positioning member 8. You can do it.

That is, the positioning member 8 is formed of, for example, a closed-cell foam of synthetic resin having predetermined elasticity and rigidity and having resistance to welding sparks.
The width dimension W ₂ is set to be slightly smaller than the compression dimension when the core 6 is pressed by the concrete 4 and compressed.

As shown in FIGS. 2 and 3, the positioning member 8 has a side surface facing the outer wall 2 substantially flush with a side surface of the jacket material 7. The upper adhesive layer 9 and the lower adhesive layer 10 made of, for example, butyl rubber are respectively provided at a position between the positioning material 8 and the outer covering material 7 and at a position corresponding to only the outer covering material 7. Is attached and fixed to the inner surface side of the outer wall 2 via both of the adhesive layers 9 and 10. As shown in FIG. 3, the surfaces of the adhesive layers 9 and 10 are protected by release papers 11 and 12 before use to prevent the adhesiveness from being impaired during transportation or the like. I have.

Next, the operation of the present embodiment will be described. At the time of construction, before the concrete 4 is cast on the floor base material 1, the outer wall 2 is installed as shown in FIG. After that, as shown in FIG. 1B, the refractory interlayer material 3 is installed on the inner surface side of the outer wall 2, and the gap G between the floor base material 1 and the outer wall 2 is closed by the refractory interlayer material 3.

When installing the refractory interlayer material 3, first, the release papers 11 and 12 are removed to expose the adhesive layers 9 and 10, and then the refractory interlayer material 3 is gripped by the positioning material 8 and the outer wall 2 is removed. Stick it on the inner surface of.

At this time, since the positioning member 8 has a predetermined rigidity, the positioning of the refractory interlayer member 3 can be performed very easily and accurately, and the lower surface of the covering member 7 can be fixed to the floor base member 1. It can be sufficiently adhered to the top. When the positioning member 8 is pressed for sticking and fixing, the rigidity thereof causes the upper adhesive layer 9 to be pressed against the outer wall 2 with a large force, so that the fireproof interlayer material 3 can be stuck and fixed to the outer wall 2 without fail.
At this stage, it is not possible to apply such a large pressing force to the lower adhesive layer 10, so that it is not possible to expect such a large adhesive force for the lower adhesive layer 10.

After the refractory interlayer material 3 has been installed on the inner surface of the outer wall 2 in this manner, as shown in FIG. Configure. By the way, the casting of the concrete 4 causes the jacket material 7 to be pressed toward the outer wall 2, so that the core material 6 is in a state of being compressed to some extent. Then, in this state, the concrete 4 is dried and solidified. For this reason, the covering material 7 sufficiently adheres to the outer wall 2 due to the reaction force accompanying the compression of the core material 6, and the sticking and fixing force of the lower adhesive layer 10 increases with time, and an extremely large fixing force. Is obtained.

After the gap G between the floor covering 1 and the outer wall 2 is closed by the refractory interlayer 3, the floor covering 1
Since the concrete 4 is cast on the floor 5 to form the floor 5, the refractory interlayer material 3 functions as a concrete stopping member at the peripheral portion of the floor base material 1, and the conventionally required concrete stopping iron plate is omitted. can do.

In the first embodiment,
Although the case where the positioning material 8 is fixedly provided on the upper surface of the outer cover material 7 has been described, the outer cover material 7 and the positioning material 8 are separately formed, and after the outer cover material 7 is attached and fixed to the outer wall 2. After the positioning member 8 is adhered and fixed to the outer wall 2, or conversely, after the positioning member 8 is adhered and fixed to the outer wall 2, the covering material 7 is attached to the outer wall 2.
May be attached and fixed. At this time, the jacket material 7 and the positioning material 8 may be connected, or may be left unconnected.

FIG. 4 shows a second embodiment of the present invention, in which a refractory interlayer material 13 is used in place of the refractory interlayer material 3 in the first embodiment.

That is, as shown in FIG. 4, this refractory interlayer member 13 has a structure in which a fixing member 14 and a height adjusting member 15 are added to the configuration of the refractory interlayer member 3 in the first embodiment. No. The fixing member 14 is formed in a square rod shape using, for example, a closed cell foam of a synthetic resin,
The fixing member 14 is fixed to the lower end portion of the surface of the covering member 7 on the floor base material 1 side. Then, the fixing member 14 is adhered and fixed on the floor base material 1 via the adhesive layer 16, and the floor base material 1
The proof strength against the pressure from the concrete 4 to be cast thereon can be improved.

On the other hand, as shown in FIG. 4, the height adjusting member 15 is formed of the same material as the positioning member 8 and is formed in a rectangular rod shape slightly narrower than the positioning member 8, and in the height direction. The dimensions of the floor finishing material 17 to be constructed on the concrete 4
The dimensions are set so as to be substantially flush with the upper surface of the. The height adjusting member 15 is provided on the inner surface of the outer wall 2 via the adhesive layer 18 before or after the concrete 4 is cast, after the core member 6, the covering member 7, the positioning member 8 and the fixing member 14 are installed. It is designed to be adhered and fixed. The height adjusting member 15 may be fixed on the upper surface of the positioning member 8 in advance when the position of the upper surface of the floor finishing material 17 is predetermined. In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

Since the lower end portion of the jacket 7 is fixed on the floor base material 1 by using the fixing member 14,
Even if a strong force is accidentally applied to the covering material 7 when the concrete 4 is cast on the floor covering 1, the concrete 4 flows out from between the floor covering 1 and the covering material 7. There is no danger that the concrete 4 is cast.

The position of the upper surface of the flooring material 17 is determined by the vertical dimension from a reference point which is set at a position higher than that, and therefore, the dimension from the floor base material 1 to the upper surface of the flooring material 17 is determined. Is not necessarily constant at each site, but can be absorbed by the height adjusting member 15. For this reason, there is no problem that the floor finishing material 17 and the outer wall 2 come into close contact with each other and hinder mutual free movement in the event of an earthquake or the like.

FIG. 5 shows a third embodiment of the present invention, in which a refractory interlayer material 23 is used in place of the refractory interlayer material 3 in the first embodiment.

That is, as shown in FIG. 5, the refractory interlayer material 23 comprises a positioning material 8, a fixing material 14, and both adhesive layers 9, 1 of the refractory interlayer material 13 in the second embodiment.
0, instead of spark curing material 24, fixing material 25 and adhesive layer 2
6 is used.

As shown in FIG. 5, the spark curing material 24 is formed of a thick rubber or synthetic resin sheet material having resistance to welding sparks. It is fixed on the upper surface of the outer wall 7 in advance, or can be attached later when the outer cover 7 is mounted on the outer wall 2 or the like.

As shown in FIG. 5, the fixing member 25 is formed of a relatively thick sheet material made of rubber or synthetic resin. The covering material 7 is fixed in advance and the floor covering material 1
After being installed between the floor material 1 and the outer wall 2, it is adhered and fixed on the floor base material 1 via the adhesive layer 27.

As shown in FIG. 5, the adhesive layer 26 is provided on almost the entire area of the surface facing the outer wall 2 of the outer cover member 7, and the height adjusting member 15 is attached later. Also,
By enlarging the area of the adhesive layer 26, the jacket material 7 can be stably stuck and fixed to the outer wall 2. In other respects, the configuration is the same as that of the first or second embodiment, and the operation is the same.

In the present embodiment, the positioning member 8 does not exist. However, if the height adjusting member 15 is fixed to the outer cover 7 in advance, the height adjusting member 15 is not provided. 15 can function as a positioning material, and even when the height adjusting material 15 is to be retrofitted, the position of the floor base material 1 can be used as a reference so that the refractory interlayer material 23 can be relatively easily and accurately. Can be installed.

In each of the above embodiments, the case has been described where after the outer wall 2 is installed, the refractory interlayer members 3, 13, and 23 are installed between the outer wall 2 and the floor base material 1. Before the installation of the refractory interlayer 2, the refractory interlayer members 3, 13, 23 may be installed on the inner surface of the outer wall 2 in advance. At this time, the fixing members 14 and 25 are attached and fixed on the floor base material 1 after the outer wall 2 is installed. Also,
When the height adjusting member 15 is retrofitted, it may be attached before the outer wall 2 is installed, or may be installed after the outer wall 2 is installed.

Further, in each of the above-described embodiments, the case where the cross-sectional shape of the core material 6 and the outer cover material 7 is a vertically long rectangle has been described, but at least a part or all of the side facing the outer wall 2 is provided. The shape is not particularly limited as long as there is a flat surface and the outer wall 2 and the outer cover material 7 can be brought into close contact with each other.

Further, in each of the above-described embodiments, the case where the refractory interlayer materials 3, 13, and 23 have resistance to welding sparks has been described. You may do so.

Further, in each of the above-described embodiments, the case where the concrete 4 is cast after the refractory interlayer materials 3, 13 and 23 are installed has been described, but, for example, the end of the floor base material 1 on the side of the outer wall 2 is explained. Except for the above, concrete 4 is cast in the center of the floor base material 1 before the installation of the fire-resistant interlayer materials 3, 13, 23, and is left after the installation of the fire-resistant interlayer materials 3, 13, 23. The concrete 4 may be cast in the part where it has been.

[0046]

As described above, the present invention relates to a construction method for arranging a refractory interlayer material between a floor and an outer wall of a building. At least on the outer wall side end, do not cast concrete, in this state a fireproof interlayer material is installed between the floor base material and the outer wall, and the space between the floor base material and the outer wall is closed,
Next, since concrete is cast on the floor base material, the refractory interlayer material functions as a member for stopping concrete, whereby the iron plate for stopping concrete, which is conventionally required, can be omitted. Therefore, labor saving,
The construction period can be shortened, the weight of the building can be reduced, and the cost can be reduced.

The present invention also provides a core material formed of a non-combustible material into a rod shape having a flat surface at least on a surface facing an outer wall; a jacket material surrounding the core material; And an adhesive layer for positioning and fixing the outer wall to the outer wall, so that the construction is easy and a stable fixing force can be obtained.

According to the present invention, a positioning member in the form of a rectangular bar is provided on the outer wall of the refractory interlayer material, which is located above the outer cover material, and the positioning material has at least a predetermined rigidity and resistance to welding sparks. With this configuration, by gripping and handling the positioning material, the construction of the refractory interlayer material becomes easier and a more stable fixing force can be obtained. Further, even if the spark of welding performed on the upper floor falls on the refractory interlayer material, there is no risk that the jacket material will be damaged by the spark.

According to the present invention, the fixing material for fixing the lower end of the covering material on the floor base material side to the floor base material is provided in the fireproof interlayer material. It can be more stable.

According to the present invention, since the refractory interlayer material is attached between the outer wall and the floor base material after the outer wall is installed, the refractory interlayer material can be easily positioned and installed.

Further, in the present invention, the refractory interlayer material is attached to the outer wall in advance before the outer wall is installed. Therefore, if the outer wall is installed, the installation of the refractory interlayer material is completed, and the refractory interlayer material is completed. Labor can be saved.

[Brief description of the drawings]

FIGS. 1A to 1C are explanatory diagrams sequentially showing a building method according to a first embodiment of the present invention in accordance with procedures.

FIG. 2 is a detailed view showing an installation state of a refractory interlayer material.

FIG. 3 is a sectional view showing details of a refractory interlayer material.

FIG. 4 is a diagram corresponding to FIG. 2, showing a second embodiment of the present invention.

FIG. 5 is a diagram corresponding to FIG. 2, showing a third embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 floor base material 2 outer wall 3,13,23 fireproof interlayer material 4 concrete 5 floor 6 core material 7 outer cover material 8 positioning material 9 upper adhesive layer 10 lower adhesive layer 14,25 fixing material 15 height adjusting material 16,18 , 26,27 Adhesive layer 17 Floor finishing material 24 Spark curing material G Gap

Claims (6)

(57) [Claims] 1. A building method in which a refractory interlayer material is disposed between a floor and an outer wall of a building, wherein concrete is cast on the upper surface side and at least an end of the floor base material constituting the floor on the outer wall side is provided. Do not cast concrete, and in this state, install a fire-resistant interlayer material between the floor base material and the outer wall, close the space between the floor base material and the outer wall, and then cast concrete on the floor base material Building method characterized by doing. 2. A refractory interlayer material comprising: a core material formed of a non-combustible material into a rod shape having a flat surface at least on a surface facing an outer wall; a jacket material surrounding the core material; and a refractory interlayer material on the outer wall. The building method according to claim 1, further comprising: an adhesive layer for positioning and fixing. 3. The refractory interlayer material includes a square rod-shaped positioning member which is mounted on an outer wall at an upper portion of the jacket material, and the positioning material has at least a predetermined rigidity and resistance to welding sparks. The construction method according to claim 2, wherein: 4. The building method according to claim 2, wherein the refractory interlayer material includes a fixing material for fixing a lower end of the outer covering material on the floor base material side to the floor base material. . 5. The building method according to claim 1, wherein the refractory interlayer material is attached between the outer wall and the floor base material after the outer wall is installed. 6. The refractory interlayer material is attached to an outer wall before installing the outer wall.
Or the building method of 4.