JP2004162471A - External heat insulating precast board and external heat insulating wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an external heat insulating precast board and an external heat insulating wall for preventing spread of a fire of a heat insulating material in the external heat insulating precast board in a fire without impairing heat insulating performance. <P>SOLUTION: This external heat insulating precast board 1 is composed of an outer wall molding plate 2, the heat insulating material 3 and an inner wall molding plate 4, and a first fire resistant material 6 is arranged on an upper end surface of the heat insulating material 3. The inner wall molding plate 4 side is filled with a second fire resistant material 8 up to the depth coming into contact with a gasket 7 so that a surface forms a uniform plane by arranging the gasket 7 so as to fit to a groove 4a arranged on the outer peripheral surface of the inner wall molding plate 4 in a joint part of the external heat insulating precast board 1 adjacent to each other in the vertical direction and the horizontal direction. While a joint filler 9 is filled in a prescribed depth position in a outer wall molding plate 2 side joint part, a sealing material 10 is filled up to the depth for contacting with the joint filler 9 so that the surface forms the uniform plane. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to an external heat-insulating precast plate for forming an external heat-insulating wall of a concrete structure with an external heat-insulating structure, and an external heat-insulating wall.
[0002]
[Prior art]
The external heat insulation method of forming the external heat insulation wall of the concrete frame by the external heat insulation structure is known as a method of improving the heat storage effect and preventing dew condensation by providing heat insulation between the outer wall and the inner wall of the structure. I have. In general, it is formed by placing a precast formwork provided with a heat insulating material on the back side integrally with a reinforced concrete skeleton of a building, or sandwiching the heat insulating material between a pair of precast plates constituting an inner wall and an outer wall. For example, a method of driving the outer heat-insulated precast plate into a frame of a structure is used.
[0003]
[Patent Document 1]
JP-A-60-109446
[Problems to be solved by the invention]
By the way, in the outer heat insulation method using the precast formwork or the outer heat insulating precast plate as described above, the outer peripheral edge of the opening when the opening is provided in the outer heat insulating wall or a joint portion of the adjacent outer heat insulating precast plate or the like. Thus, an exposed portion of the heat insulating material is formed. Therefore, in the event of a fire or the like, it is conceivable that the exposed heat insulating material may ignite, and depending on the material of the heat insulating material, there is a high possibility that the fire will spread inside the wall, causing the fire to spread or the outer wall finishing material to fall off. The danger of is concerned.
[0005]
In view of the above-mentioned circumstances, an object of the present invention is to provide an external heat-insulating precast plate and an external heat-insulating wall capable of preventing a fire from spreading in the external heat-insulating precast plate at the time of fire.
[0006]
[Means for Solving the Problems]
The pre-insulated pre-insulated plate according to claim 1, wherein the pre-insulated pre-cast plate constitutes an external heat insulating wall of a concrete frame having an external heat insulating structure, wherein the heat insulating pre-plate has a quadrangular shape in plan view; A concrete outer wall forming plate arranged on one surface of the material and constituting the outer wall of the building, and a concrete inner wall forming plate arranged on the other surface of the heat insulating material and constituting the inner wall of the building A first refractory material is formed on at least one side of the outer peripheral surface of the heat insulating material.
[0007]
According to a second aspect of the present invention, the first heat-resistant material is disposed on an upper end surface of the heat-insulating material.
[0008]
An outer heat-insulating precast plate according to a third aspect is characterized in that a first refractory material is arranged on four sides of the heat-insulating material so as to form an outer peripheral edge.
[0009]
The external heat insulating wall according to claim 4 is configured such that the external heat insulating precast plate according to any one of claims 1 to 3 is continuously formed in a horizontal direction and a vertical direction so as to form the same plane with a frame of a building. A second refractory material is arranged at the joint on the inner wall forming plate side of the adjacent outer heat insulating precast plate, which is an outer heat insulating wall formed by disposing, so that the surfaces of the inner wall forming plate are continuous. It is characterized by being done.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an external heat insulating precast plate of the present invention and an external heat insulating wall constituted by the external heat insulating precast plate will be described. The outer heat-insulating precast plate of the present invention prevents fire or spread of fire on the heat-insulating material when a fire or the like occurs by arranging a refractory material in a portion where the heat-insulating material was exposed. In the present embodiment, the case where both the exterior molding plate and the interior molding plate constituting the external heat insulating precast plate are made of precast concrete will be described in detail.
[0011]
As shown in FIG. 1, the outer heat insulating precast plate 1 includes an outer wall forming plate 2, a heat insulating material 3, and an inner wall forming plate 4. The heat insulating material 3 is formed in a quadrangular plate shape having a uniform thickness in a plan view, and a generally used foamed heat insulating material such as urethane foam is used as the material. The material and thickness of the heat insulating material 3 may be determined according to the desired heat insulating performance.
On one surface 3a of the heat insulating material 3, there is provided an outer wall forming plate 2 which is formed in a size capable of covering the entire surface and has a rectangular plate shape in plan view. The outer wall forming plate 2 is made of a precast concrete plate, and an outer wall tile is integrated with a surface as an exterior finishing material 5. In addition, as the outer wall forming plate 2, a stone material or a concrete base plate sprayed or extruded formed plate can be used.
Also, on the other surface 3b of the heat insulating material 3, an inner wall forming plate 4 having a size similar to that of the outer wall forming plate 2 and having a rectangular shape in a plan view is arranged. The inner wall forming plate 4 is made of a precast concrete plate, and has a groove 4a formed at a predetermined position on the outer peripheral surface so as to extend in the longitudinal direction of both side end surfaces and upper and lower end surfaces, and to be continuous with each other.
[0012]
By the way, in the upper end portion of the above-mentioned outer heat-insulating precast plate 1, the upper end surface of the heat insulating material 3 is cut out to a predetermined depth, the bottom portion is formed by the heat insulating material 3, and both sides are formed by the outer wall forming plate 2 and the inner wall forming plate 4. Are formed, and the first refractory material 6 is fitted in the concave portion. In the present embodiment, as the first refractory material 6, a calcical plate which is lightweight, has the same workability as wood, has good dimensional stability, and has relatively high heat insulating properties is used, but it is not limited to this. Instead, any material may be used as long as it has high fire resistance, good heat insulation, and good workability. In this way, by covering the heat insulating material 3 with the first refractory material 6 without exposing the heat insulating material 3 at the upper end portion of the external heat insulating precast plate 1, the same plane is formed to construct the external heat insulating wall in the concrete building. When a plurality of outer heat-insulating precast plates 1 are successively arranged so that the upper and lower end faces face each other, a fire or the like occurs and the heat insulating material 3 is ignited. It is possible to suppress the spread of fire on the heat insulating material 3.
[0013]
In the present embodiment, such a configuration in which the first refractory material 6 is disposed on the upper end surface of the heat insulating material 3 has been described. However, the present invention is not limited to this, and the first refractory material 6 is disposed on any one of the outer peripheral surfaces. Just do it. Thereby, even if a fire or the like occurs and the heat insulating material 3 is ignited, it is possible to suppress the spread of fire to the heat insulating material 3 in the adjacent external heat insulating precast plate 1.
On the other hand, as shown in FIG. 2, a configuration in which the first refractory material 6 is arranged such that outer peripheral edges are formed on four sides of the heat insulating material 3 may be adopted. Thereby, the spread of fire to the heat insulating material 3 in the adjacent outer heat insulating precast plate 1 can be more effectively suppressed.
In any case, the first refractory material 6 is arranged to a depth sufficiently contacting the outer wall forming plate 2 and the inner wall forming plate 4.
[0014]
The configuration of the outer heat insulating wall 12 of the building using a plurality of the outer heat insulating precast plates 1 in which the first refractory material 6 is disposed at the upper end of the heat insulating material 3 as described above will be described below.
[0015]
The outer insulating wall 12 is configured by arranging the plurality of outer insulating precast plates 1 so as to be adjacent to each other in a vertical direction and a horizontal direction so as to form a vertical plane with respect to a frame of a building. I have. Here, the joint portions 11 of the outer heat insulating precast plates 1 adjacent in the vertical direction are shown in FIG. 3A, and the joint portions 11 of the outer heat insulating precast plates 1 adjacent in the horizontal direction are shown in FIG. 3B.
As shown in FIGS. 3 (a) and 3 (b), in the joint portion 11 of the outer heat insulating precast plate 1 adjacent in the vertical and horizontal directions, the inner wall forming plate 4 side is provided on the inner wall forming plate 4. The gasket 7 is arranged so as to fit into the groove 4a, and the second refractory material 8 is filled to a depth in contact with the gasket 7 so that the surface of the inner wall forming plate 4 forms a uniform plane. Have been. In the present embodiment, rock wool that has high fire resistance and is generally used as a sound absorbing material is used as the second refractory material 8. Any material may be used as long as it has high fire resistance equal to or higher than wool.
[0016]
On the other hand, the joint portion 11 on the side of the outer wall forming plate 2 is filled with the joint filler 9 at a predetermined depth position, and the joint is formed so that the surface of the outer wall forming plate 2 forms a uniform plane. The sealing material 10 is filled to a depth in contact with the filling material 9. In the present embodiment, the joint filler 9 is made of a refractory material such as rock wool similar to the second refractory material 8, and the sealing material 10 is made of denatured silicon having high waterproof performance. I have. However, the material to be used is not limited to this. The joint filler 9 is made of a material having excellent fire resistance, and the sealing material 10 is made of a material having excellent waterproofness. Any material may be used as long as it follows the displacement of the part. It is not always necessary to use the joint filler 9 having excellent fire resistance for the joint portion 11 on the outer wall forming plate 2 side.
[0017]
In addition, the outer heat-insulating precast plate 1 in which the first refractory material 6 is arranged so as to form outer peripheral edges on four sides of the heat insulating material 3 is vertically and vertically formed so as to form a vertical plane with respect to the frame of the building. Regarding the outer heat insulating wall 12 formed by arranging the outer heat insulating walls 12 adjacent to each other in the horizontal direction, the joint portions 11 of the outer heat insulating precast plates 1 adjacent in the vertical direction are shown in FIG. The joint portion 11 of the precast plate 1 is shown in FIG.
The gasket 7 is arranged on the side of the inner wall forming plate 4 at the joint portion 11 of the adjacent outer heat insulating precast plate 1 so as to fit into the groove 4 a provided in the inner wall forming plate 4. The second refractory material 8 is filled to a depth in contact with the gasket 7 so that the surface forms a uniform plane.
On the other hand, the joint portion 11 on the side of the outer wall forming plate 2 is filled with the joint filler 9 at a predetermined depth position, and the joint is formed so that the surface of the outer wall forming plate 2 forms a uniform plane. The sealing material 10 is filled to a depth in contact with the filling material 9. At this time, the heat insulating material 3 is not exposed on the upper and lower end surfaces and both side surfaces of the adjacent outer heat insulating precast plate 1 facing each other, and the first refractory materials 6 arranged on all sides of the heat insulating material 3 face each other. ing.
[0018]
According to the configuration described above, since the outer heat-insulating precast plate 1 in which the first refractory material 6 is arranged on any one side of the outer peripheral surface of the heat insulating material 3 is used, a fire occurs, and the outer heat-insulating precast plate 1 Even when the heat insulating material 3 is ignited, it is possible to suppress the range in which the heat spreads to the heat insulating material 3 of the adjacent external heat insulating precast plate 1.
[0019]
Further, as shown in FIG. 2, by using the outer heat-insulating precast plate 1 in which the four sides of the heat insulating material 3 are surrounded by the first refractory material 6, for example, a configuration in which an opening or the like is provided in the outer heat-insulating precast plate 1 is also possible. Since the heat insulating material 3 is not exposed on the upper and lower end surfaces and the side surfaces of the external heat insulating precast plate 1 having the opening, the fire spreads to the heat insulating material 3 of the adjacent external heat insulating precast plate 1 when a fire or the like occurs. Therefore, it is possible to suppress the spread of the fire, the falling off of the outer wall finishing material 5, and the like. Further, it is desirable that the exposed portion of the heat insulating material 3 at the periphery of the opening is also provided with the refractory material 6 and surrounds the opening.
Also, since the second refractory material 8 is filled in the joint portion 11 of the outer heat insulating wall 12 on the side of the inner wall forming plate 4, even when a fire occurs from the room, the joint portion 11 of the outer heat insulating wall is inward from the joint portion of the outer heat insulating wall. Can be prevented from being ignited.
[0020]
【The invention's effect】
According to the external heat-insulating precast plate according to claims 1 and 2, it is an external heat-insulating precast plate constituting an external heat-insulating wall of a concrete frame having an external heat-insulating structure, and is a plate-like heat insulating material formed in a quadrilateral shape in plan view. And a concrete outer wall forming plate arranged on one surface of the heat insulating material and constituting an outer wall of the building; and a concrete inner wall arranged on the other surface of the heat insulating material and constituting an inner wall of the building A first refractory material is disposed on at least one side of the outer peripheral surface of the heat insulating material. Alternatively, since the first refractory material is disposed on the upper end surface of the heat insulating material, even when a fire occurs and the heat insulating material of the external heat insulating precast plate is ignited, the fire resistance of the adjacent external heat insulating precast plate may be reduced. It is possible to suppress the range in which the material spreads.
[0021]
According to the external heat-insulating precast plate of the third aspect, since the first refractory material is arranged on four sides of the heat-insulating material so as to form an outer peripheral edge, an opening or the like is provided at a desired position of the external heat-insulating precast plate. Also, since the upper and lower end surfaces and the side surfaces of the outer heat-insulating precast plate having the openings are provided with the heat insulating material, when a fire occurs, only the outer heat-insulating precast plate burns, and the adjacent outer heat insulating plate is burned. It is possible to suppress the spread of fire, the falling off of the exterior finishing material, and the like without spreading the fire to the heat insulating material of the precast plate.
[0022]
According to the external heat-insulating wall according to the fourth aspect, the external heat-insulating precast plate according to any one of the first to third aspects is continuous in the horizontal and vertical directions so as to form the same plane with the frame of the building. The outer heat-insulating wall formed by arranging the outer heat-insulating precast plate and the joint portion on the inner wall-forming plate side of the adjacent outer heat-insulating precast plate has a thickness in contact with the gasket so that the surfaces of the inner wall-forming plate are continuous. Since the second refractory material is provided, it is possible to prevent the inward ignition from the joint of the outer heat insulating wall even when the fire starts from the room.
[Brief description of the drawings]
FIG. 1 is a diagram showing an external heat insulating precast plate of the present invention.
FIG. 2 is a view showing another example of the external heat insulating precast plate of the present invention.
FIG. 3 is a view showing a joining structure of the external heat insulating precast plate of the present invention.
FIG. 4 is a view showing a joining structure of an external heat insulating precast plate according to another example of the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 outer heat insulating precast plate 2 outer wall forming plate 3 heat insulating material 4 inner wall forming plate 4 a groove 5 outer wall finishing material 6 first refractory material 7 gasket 8 second refractory material 9 joint filler 10 sealing material 11 joint portion 12 outer heat insulating wall

Claims (4)

An outer heat-insulating precast plate constituting an outer heat-insulating wall of a concrete skeleton by an outer heat-insulating structure,
A plate-like heat insulating material formed into a quadrilateral in plan view;
A concrete outer wall forming plate arranged on one surface of the heat insulating material and constituting an outer wall of the building;
A concrete inner wall forming plate which is arranged on the other surface of the heat insulating material and forms an inner wall of the building;
An outer heat insulating precast plate, wherein a first refractory material is disposed on at least one side of an outer peripheral surface of the heat insulating material. In the outer heat-insulating precast plate according to claim 1,
An outer heat-insulating precast plate, wherein the first refractory material is disposed on an upper end surface of the heat insulating material. In the outer heat-insulating precast plate according to claim 1,
An outer heat insulating precast plate, wherein a first refractory material is arranged on four sides of the heat insulating material so as to form an outer peripheral edge. An external heat insulating wall formed by arranging the external heat insulating precast plate according to any one of claims 1 to 3 continuously in a horizontal direction and a vertical direction so as to form the same plane with a frame of a building. And
An outer heat insulating wall, wherein a second refractory material is disposed at joints on the inner wall forming plate side of adjacent outer heat insulating precast plates so as to continue the surfaces of the inner wall forming plate.

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