JPH0652964B2 - Fireproof construction method for wall penetrations - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a method for constructing a fireproof structure of a wall penetration portion (A) provided on a floor or a wall as shown in FIG.

(Prior Art) Conventionally, as a fire-resistant structure of this type, for example, the actual construction 53
As shown in Japanese Patent No. 65595 and Japanese Utility Model Laid-Open No. 53-67097, a cable is penetrated through a wall through hole formed in a floor wall, a fireproof board is fixed to one side of the wall through hole, and It is known that a non-combustible material such as rock wool fiber is laid in the wall through hole to close the wall through hole.

(Problems to be solved by the invention) However, in this conventional structure, not only is it troublesome to spread a non-combustible material such as rock wool fiber in the wall through-hole, but the spread non-combustible material has poor adhesion. Cage,
Therefore, an air flow path is formed in the through-hole,
It was not a sufficient fireproof structure for the wall penetration. In addition, it is difficult and time-consuming to make the fire-resistant board by precisely matching the outer shape of the cable.

(Means for Solving the Problems) In order to solve the above problems, the means adopted by the present invention include a wall through-hole (2) formed in a floor or a wall (10), and the wall through-hole ( Position the deformable balloon (5) in the gap between the cable (9) wired or piped in 2) or the pipe, and then fill the balloon (5) with the refractory material (10). (5) By expanding the fireproof material (10) in the gap of the wall through-hole (2) by inflating the wall through-hole (2), the wall through-hole (2) is closed. Is.

(Operation) Therefore, in the present invention, the balloon (5) is provided by the pump or the like.
The wall through-hole (2) can be easily closed by inflating the balloon (5) while filling the inside with the refractory material (10),
Moreover, while the balloons (5) spread throughout the gap,
Since the inner peripheral shape of (2) and the outer peripheral shape of the cable (9) are fitted and deformed arbitrarily, the wall through hole (2) can be surely closed.

(Example) Hereinafter, a method for constructing a fireproof structure for a wall penetrating portion embodying the present invention will be described with reference to the drawings.

In this embodiment, as shown in FIG.
A plurality of balloons (5) are placed inside the (2), and refractory materials (1
0) is enclosed and placed in close contact with each other. The balloon (5) is provided with an inlet (8) for injecting the refractory material (10) on a part of its upper surface. The shape and structure of the balloon (5) are not particularly limited, but for example, as shown in FIG. 6, a balloon having a plurality of protrusions (6) on the outer periphery and formed in a substantially petal shape, or other The shape of the balloon (5) is controlled by the shape of the balloon (5), the thickness of the balloon (5) is partially different, and the material of the balloon (5) is partially different. It is desirable that the through hole (2) be formed so as to be efficiently blocked.

Now, in such a fireproof structure construction method, as shown in FIG. 2, first, the balloon (5) is inserted into the gap between the wall through hole (2) and the cable (9). Then, in this state, as shown in FIG. 3, the refractory material (10) made of, for example, a pouring type urethane-based two-component room temperature curing type flame range is inserted into the balloon (5) through the inlet (8). ) Is enclosed by a pump or the like not shown. Repeat the same work with multiple balloons (5)
Repeat, and spread the balloon (5) in the gap so that no air flow passage is formed.

As a result, as shown in FIGS. 1 and 4, the balloon (5)
While spreading in the gap, it fits the inner peripheral shape of the wall through-hole (2) and the outer peripheral shape of the cable (9) and deforms arbitrarily, and in this state the refractory material (10) in the balloon (5) Upon curing, the wall through hole (2) around the cable (9) is closed. When injecting the refractory material (10) into the balloon (5), the nozzle (11) is inserted to the bottom of the balloon (5) as shown in FIG. Fill with (11).

Therefore, according to the fireproof construction method of this embodiment, the balloon
Insert the (5) into the gap between the wall through-hole (2) and the cable (9), and in this state, enclose the balloon (5) with the refractory material (10). 2) can be blocked easily and surely.

In addition, although the said Example is an example embodied in the wall through-hole formed in the floor wall, this invention may be embodied in the wall through-hole formed in the side wall. When applied to the wall through-hole formed in this side wall, the space between the wall through-hole and the cable can be filled without the need for a container that receives refractory material, so the structure is simple and The method can be performed easily and the workability can be improved.

(Effects of the Invention) As described in detail above, according to the present invention, a cable or a pipe is penetrated through a wall through hole formed in a floor wall or a side wall, and a balloon is positioned in the wall through hole so that a pump or the like can be installed. It is possible to easily close the wall through-holes around cables, etc., by simply filling the balloon with the refractory material, and with the refractory material being filled, the balloon will spread out in the gap. However, since it is arbitrarily deformed to fit the inner peripheral shape of the wall through hole or the outer peripheral shape of the cable, the wall through hole can be reliably closed.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a method for constructing a fireproof structure for a wall penetration portion embodying the present invention, and FIG. 2 corresponds to FIG. 1 showing a state where a balloon is inserted into a wall penetration opening. 4 is a partially cutaway perspective view, and FIG. 3 is a partially cutaway perspective view corresponding to FIG. 1 showing a state in which a balloon is filled with a refractory material in FIG. 2;
1 is a partial cross-sectional view of FIG. 1, FIG. 5 is a cross-sectional view showing a state of a nozzle when filling a balloon with a refractory material, and FIG. 6 is a plan view of a balloon used in this embodiment. The figure is a perspective view for explaining a wall penetrating portion in a building. Explanation of reference numerals 1 ... Floor, wall, 2 ... Wall through hole, 5 ... Balloon 9 ... Cable, 10 ... Refractory material.

Claims (1)

[Claims] 1. A deformable balloon is positioned in a gap between a wall through hole formed on a floor or a wall and a cable or a pipe wired or piped in the wall through hole, and then the balloon is filled with a refractory material. A method for constructing a fireproof structure for a wall penetration part, characterized in that the balloon is inflated while a fireproof material is spread in the gaps of the wall penetration hole to close the wall penetration hole.