JP2000273982A - Fireproof wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve fire-resistant performance by laminating a calcium silicate material and a gypsum material in this order respectively at both the sides of a structural frame body thereby forming a frame body for a fireproof wall. SOLUTION: A bolt member 6 is penetrated through a hole in a plate-shaped member 10 and a frame member 3 made of a fiber-mixed calcium silicate board, its tip portion is screwed and fitted to a screw hole of a square standing steel member 1, and a frame member 3 is fixed to the square standing steel member 1. And a bolt member 6 is penetrated through a hole of a plate-shaped member 10, a hole 5 of a cover member 5 surrounding the vicinity of two-layer frame member 2 consisting of strengthened gypsum material and a frame member 2, its tip potion is screwed to a screw hole of a plate-shaped member 10, and the frame member 2 is fixed to the square standing steel member 1 outside the frame member 3. And wall bodies 7 are arranged at both the sides of the square standing steel member 1, a spacer member 8 is arranged in the gap between a wall body 7 and the frame member 3. Moreover, sealing material 9 is filled in a gap between the wall body 7 and a cover material 4 surrounding the vicinity of the frame members 2, 3. In this way, fireproof performance can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire-resistant wall, and more particularly to a fire-resistant wall frame structure.

[0002]

2. Description of the Related Art In a fire-resistant wall of a fire-resistant structure specified by the Ministry of Construction No. 2999, an opaque member is used for a conventional wall, and there is no transparent fire-resistant wall. However,
In recent years, a transparent member such as a glass plate having a fire prevention performance and a heat insulation performance has been developed, and a transparent fire-resistant wall has been made possible. For example, a wall body used in an embodiment of the present invention, which will be described later, is a glass plate that can withstand a fire test specified in the Ministry of Construction Notification No. 2999. However, there is a problem with the frame structure of the refractory wall.

FIG. 3 is a sectional view of a conventional fire-resistant wall. Walls 7, 7 are arranged on both side surfaces of the cubic steel material 1, which is a skeleton. Frame members 18 are arranged on the front and back surfaces of the cubic steel material 1 so as to hang on the wall bodies 7 arranged on both sides. The cover members 19 and 19 are arranged so as to surround three surfaces around the frame members 18 and 18. The frame members 18, 18
Is formed with a notch having a substantially U-shaped cross section so as to be fitted with the cubic steel material 1.

The frame member 18 and the cover member 19 are set up by the bolt member 6 which penetrates through the hole 16 and the frame member 18 of the cover member 19 and has a tip portion screwed into a screw hole 17 provided in the cubic steel member 1. Fixed to steel material 1. A spacer material 8 made of ceramic fiber or the like is provided in a gap between the wall member 7 and the frame member 18, and a sealing material 9 such as a silicone sealant is filled in a gap between the wall member 7 and the cover member 19.

[0005] In the refractory wall having the above structure, gypsum material is desirable as a frame material. That is, since the gypsum material as the frame material contains bound water, the gypsum material has excellent heat insulating performance for suppressing a temperature rise of the cubic steel material during the heating test. Therefore, it can be used as a heat insulating material. On the other hand, the heating test removes moisture and reduces rigidity. In addition, gypsum material is inferior in workability,
As shown in FIG. 3, there are also disadvantages such as difficulty in notch processing and low strength when used as a structural material.

Another candidate for the frame material is a calcium silicate material. The calcium silicate material has good workability, can be easily cut out as shown in FIG. 3, and has a higher strength than a gypsum material when used as a structural material. But,
Insulation performance is somewhat inferior, and the thickness of the frame material must be increased in order to pass the fire test specified in Ministry of Construction Notification No. 2999. Further, when the thickness of the frame material is set within a certain range, it is limited to a mortar wall having a large heat capacity and a large effect of lowering the temperature of the steel material.

In the case where the fixing of the frame material is performed by using only the bolt member, which is the conventional method shown in FIG. 3, in the fire test specified in the Ministry of Construction Notification No. 2999, the frame material is fixed.
When the temperature rise of each member such as cubic steel and deformation of the frame due to the difference in temperature rise speed between each member, etc., when the specifications of the steel temperature, back surface temperature, etc. specified in the above fire resistance test cannot be cleared There is.

Furthermore, aluminum used as the cover member 19 in the conventional example is melted down during the heating test, cannot function as the cover member, and the frame member 18 may come off.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to improve the above-mentioned drawbacks of the conventional fire-resistant wall, and has been made of a fire-resistant wall having a fire-resistant structure capable of withstanding a fire test specified in the Ministry of Construction Notification No. 2999. The purpose is to provide.

[0010]

SUMMARY OF THE INVENTION The present invention relates to a fire-resistant wall in which the end of a transparent wall having fire protection and heat insulation performance is fitted into a frame, wherein the frame sandwiches a frame. The present invention provides a fire-resistant wall characterized in that the frame is formed by laminating a calcium silicate material and a gypsum material on both sides in this order. By adopting such a configuration, it is possible to obtain an excellent fire resistance performance that cannot be obtained with a fire wall using a calcium silicate material or a gypsum material alone for a frame structure.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a refractory plate-like member is interposed between the above-mentioned calcium silicate material and gypsum material, and the calcium silicate material and the gypsum material are interposed via the plate-like material. It is preferably fixed to the frame. By adopting such a configuration, the calcium silicate material and the gypsum material can be fixed to the body in a composite state.

In the present invention, it is preferable that the plate-like member is divided at predetermined intervals in a longitudinal direction. As described above, if the plate-like member is divided at predetermined intervals, distortion due to thermal expansion of the plate-like member is reduced, and thermal deformation of the frame can be prevented.

[0013]

[Embodiment] The fire-resistant wall of the present invention is composed of a wall and a frame. FIG. 1 is a sectional view of a fire-resistant wall according to an embodiment of the present invention. Walls 7 on both sides of cubic steel 1
7 are arranged, and the front and back surfaces of the cubic steel material 1 are hung on the walls 7, 7 arranged on both side surfaces so that the frame members 3, 3 are hung.
Are the same as in the conventional example (FIG. 3). However, it differs from the conventional example in that two types of materials are used for the frame material, a method of fixing the frame material to the cubic steel material, and the like.

The cubic steel 1 is a hot-dip galvanized steel sheet having a thickness of 1.6 mm and a combination of two long members having a U-shaped cross section. The wall bodies 7 and 7 are made of fire-resistant glass having a plate thickness of 23 mm (Graberbel SA, Belgium: trade name) manufactured by laminating two soda-lime glass plates via water glass. [Pyrobell]) was used.

As the frame material 3, a fiber-mixed calcium silicate plate having a thickness of 21.5 mm (manufactured by Nippon Insulation Co., Ltd .:
The product name [Taikalite], Minister of Construction Noncombustible No. 1061) is used, and as the frame material 2, a 15 mm thick reinforced gypsum material (manufactured by Yoshino Gypsum Co., Ltd., JISA6913) is used to form a total of 30 mm in total. did.

A notch having a U-shaped cross section is provided on a surface of the frame member 3 facing the cubic steel material 1, and the structure for fitting the cubic steel material 1 is the same as that of the conventional example (FIG. 3). It is preferable that the fitting be provided with a slight gap in the left-right direction on the drawing in consideration of the thermal expansion of the cubic steel material 1. In addition, a spacer material 8 made of ceramic fiber or the like is provided in a gap between the wall member 7 and the frame member 3, and a sealing material 9 such as a silicone sealant is filled in a gap between the wall member 7 and the cover member 4. This is the same as the conventional example (FIG. 3).

A U-shaped notch having a shallow cross-sectional depth is provided on the outer surface of the frame member 3 so that the plate member 10 is fitted. The fitting also takes into account the thermal expansion of the plate member 10,
It is preferable to provide a slight gap in the left-right direction on the drawing.
It should be noted that the above-mentioned cross-sectional shape can be cut out by the frame material 3
This is the effect of using a calcium silicate plate.

As the plate member 10, a hot-dip galvanized steel sheet having a thickness of 2.3 mm was used. The plate width (horizontal direction in FIG. 1) of the plate member 10 is 40 mm, the plate length (vertical direction to the paper surface in FIG. 1) is 400 mm, and a predetermined interval is set in the frame length direction (vertical direction to the paper surface in FIG. 1). (In this embodiment, 50 mm), they are continuously arranged with a gap therebetween. By providing such a gap, distortion due to thermal expansion of the plate-shaped member 10 is reduced, and thermal deformation of the frame can be prevented.

Outside the frame member 3 (opposite to the cubic steel material), two layers of frame members (gypsum material) 2, 2 are disposed. A cover material (hot-dip galvanized steel sheet, 1.6 mm in thickness) 5 surrounds three surfaces around the frame materials 2 and 2, and furthermore, a cover material (aluminum plate) surrounds the entire periphery of the frame materials 2, 2, and 3. , Board thickness 1.5
mm) 4 is provided. Cover material 4 is a screw (counterhead screw) 1
It is fixed to the frame member 3 by 1 and 11.

With the above arrangement, the cover members 5, 5, the cover members 4, 4, the frame members 2, 2, 2, 2, the frame members 3, 3, the cubic steel member 1
Has a total thickness of 150 mm. The cover material 5 used in the present embodiment is intended to improve the design, and is not an essential component as a fire-resistant wall.

The method of fixing the frame member 3 and the frame member 2 will be described with reference to a cross-sectional view taken along line AA of FIG. 1 shown in FIG. That is,
The frame member 3 is fixed to the cubic steel member 1 by passing through the hole 13 provided in the plate-shaped member 10 and the frame member 3, and the distal end portion is fixed to the cubic steel member 1.
This is done by a bolt member 6a screwed into a screw hole 15 provided in the hole. Further, the frame member 2 penetrates the hole 12 provided in the cover member 5 and the frame members 2 and 2, and the leading end portion is a plate-like member 1.
Bolt member 6b screwed into a screw hole 14 provided in
Is fixed by

The holes 13 provided in the plate member 10
It is preferable that a plurality of screw holes 14, holes 12 provided in the cover member 5, and screw holes 15 provided in the cubic steel member 1 be provided at a plurality of positions in the frame length direction (perpendicular to the plane of FIG. 1). That is, it is preferable that the plurality of bolt members 6a, 6a and the bolt members 6b, 6b engage with the plate member 10 from the viewpoint of improving strength.

When a fire test (a one-hour heating test of a fire-resistant partition wall) specified in Notification No. 2999 of the Ministry of Construction was performed on the fire-resistant wall having the above structure, the steel plate cover member 5 No deformation of the frame material 2 was observed, which maintained the function of holding and increased the temperature of the steel material specified in the fire resistance test. The steel material temperature is 375 ° C. on average and 417 ° C. at maximum, and 400 ° C. on average specified in the test.
Hereinafter, a value of 500 ° C. or less was satisfied at the maximum.

The structure around the frame is not a mortar structure but a dry structure using a calcium silicate material. Further, in the above fire resistance test, the cover material (aluminum plate) 4 was melted on the heated surface side. However, the cover material 4 is for improving the design property and does not affect the function of the fire wall of the present embodiment. Absent.

Comparative Example A similar fire resistance test was performed on a comparative example having the same structure as the conventional fire-resistant wall frame structure shown in the sectional view of FIG. Square steel 1 and walls 7, 7
Was the same as in the examples. In addition, cover material 1
9 and 19 were made of steel plates. As the frame members 18, 18,
A cover material 1 made of a 31.4 mm-thick fiber-mixed calcium silicate plate (manufactured by Nippon Insulation Co., Ltd .: trade name [Taikalite], certified by the Minister of Construction No. 1061)
9, 19, the frame members 18, 18 and the total thickness of the cubic steel member 1 are 12
The frame was 0 mm.

When a fire resistance test (a one-hour heating test of a fire-resistant partition wall) specified in the Ministry of Construction Notification No. 2999 was performed on the fire-resistant wall having the above configuration, it was found that the temperature of the steel material was increased on the heated surface side. Deformation and detachment of the frame material 18 were observed.
Further, the steel material temperature was 482 ° C. on average and 642 ° C. at maximum, and did not satisfy the average value of 400 ° C. or less and 500 ° C. or less specified in the test. It is to be noted that the structure around the frame is not a mortar structure but a dry wall using a calcium silicate material as in the example.

[0027]

According to the present invention, it is possible to provide a fireproof wall having a fireproof structure capable of withstanding a fireproof test specified in Ministry of Construction Notification No. 2999. In addition, regardless of whether a dry wall or a mortar wall is used for the structure around the frame, the building is certified by the Minister of Construction, so that highly versatile construction is possible.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a fire-resistant wall according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a horizontal sectional view of a conventional fire-resistant wall.

[Explanation of symbols]

 1: Square steel 2: Frame (plaster) 3: Frame (calcium silicate) 4: Cover (aluminum) 5: Cover (steel) 6: Bolt 6a: Bolt (frame 3) 6b: Bolt member (for frame material 2) 7: Wall member 8: Spacer material 9: Sealing material 10: Plate member 11: Screw 12: Hole 13: Hole 14: Screw hole 15: Screw hole 16: Hole 17 ： Screw hole 18 ： Frame material 19 ： Cover material

Claims (3)

[Claims] 1. A fire-resistant wall in which an end of a transparent wall having fire-proofing performance and heat-shielding performance is fitted into a frame, wherein the frame is made of a calcium silicate material on both sides of a frame. A fire-resistant wall, which is a frame formed by laminating gypsum materials in this order. 2. A fire-resistant plate-like member is interposed between the calcium silicate material and the gypsum material, and the calcium silicate material and the gypsum material are fixed to the frame via the plate-like member. The refractory wall according to claim 1, wherein the refractory wall is formed. 3. The fire-resistant wall according to claim 2, wherein said plate-like member is divided at predetermined intervals in a longitudinal direction.