JPH08193388A - Metallic roof structure - Google Patents

Abstract

PURPOSE: To absorb the thermal expansion of a roof material, and to prevent the generation of distortion and a crack by forming expansion-contraction absorbing structure in a part of roof materials. CONSTITUTION: In a metallic roof structure, in which upstanding sections 4 are bent and formed at the end sections of a plurality of adjacent roof materials 3 made of stainless and the adjacent upstanding sections 4 are connected and a continuous waterproof surface is formed onto the roof body 1 of a building, long-sized slits 8 dividing the roof materials 3 into approximately two are formed to the partial roof materials 3. Elastic materials 7 absorbing stress applied to a roof are fitted integrally into the slits 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal roof structure which absorbs thermal expansion of a metal roof material due to outside air temperature, solar heat, etc., and prevents distortion and deformation of the roof material.

[0002]

BACKGROUND OF THE INVENTION Generally, a long thin stainless steel sheet having rising portions at both ends is used as a roofing material, and the rising portions are continuously welded by a seam welding machine to form one waterproof surface. An excellent stainless welding waterproof construction method is known. This is because stainless steel used for roofing materials does not adhere to the base material more easily than rubber-based or resin-based waterproofing materials, so there is less effect of slipping or cracking of the base material, but in the case of the exposure method, it is affected by outside temperature or solar heat. The thermal contraction and thermal expansion of the roof material cannot be ignored. Therefore, as shown in FIG. 5, where the roof members are connected, the rising portion 4 of the roof member 3 is bent at an obtuse angle, and the joint portion 5 is seam welded.
A space 13 is formed between the roof material 3 and the roof material 3 to absorb the expansion and contraction of the roof material 1, or the bent portion between the parapet 2 and the roof frame 1 is curved as shown in FIG. Although the space 14 is formed to absorb the expansion and contraction of the roofing material 1, the conventional expansion and contraction absorbing structure is not always sufficient.

For example, the roof drain opening on the roof surface is fixed to the roof frame, while the end of the stainless roof material is in contact with the outer peripheral surface of the opening. Since it is difficult to construct, as shown in FIG. 7, excessive stress is concentrated on the joint between the roof drain 6 and the roof material 3, which may cause distortion or cracks in the roof drain 6 and the roof material 3. In particular, the stress due to the expansion and contraction of the roof plate was easy to concentrate on the parapet part and the trough part of the roof frame.

[0004]

SUMMARY OF THE INVENTION The present invention was made under the above background, and by forming an expansion and contraction absorbing structure in a part of roofing material, thermal expansion of the roofing material is absorbed to prevent distortion and cracking. An object is to provide a metal roof structure that can be prevented.

[0005]

In order to achieve the above object, a metal roof structure according to the present invention has a structure in which a rising portion is bent and formed at an end portion of a plurality of adjacent stainless roof members,
In a metal roof structure in which adjacent rising portions are connected to form a continuous waterproof surface on the roof frame of a building, a long slit is formed in a part of the roof material to divide the roof material into approximately two, An elastic material that absorbs the stress applied to the roof is integrally mounted in the slit.

Instead of forming the slits in the part of the roof material, the roof material may be divided into two and integrally connected by an elastic material.

[0007]

According to the invention of claim 1, the waterproof surface formed by a plurality of roof members can be partially absorbed by the elastic member when it expands and contracts due to the rise and fall of solar heat and the outside temperature. it can. Further, since the degree of absorption of the elastic material is much larger than that when the roof material is bent and connected, efficient expansion and contraction absorption can be performed.

Therefore, it is possible to effectively prevent the roof material stretched by the solar heat from coming into contact with the structure and stress being concentrated to distort or crack the roof material.

Moreover, the expansion and contraction absorption of such a roof plate is
This can be achieved by a simple structure in which an elastic material is integrally attached to a part of the roofing material, and since a complicated absorbing structure is not required, the construction is simple and the cost can be kept low.

Further, since the elastic material is integrally attached to the roof material, watertightness can be secured.

According to the second aspect of the present invention, it becomes easy to integrally attach the roof member and the elastic member.

[0012]

1 shows a metal roof structure in a parapet according to the present invention. Reference numeral 1 is a roof skeleton, and a foamed resin 1a is arranged on the upper surface. Reference numeral 2 is a parapet, which is erected from the end of the roof body 1. The inner side surfaces of the roof frame 1 and the parapet 2 are covered with a waterproof surface formed by connecting a plurality of stainless roof materials 3 adjacent to each other.

The roofing material 3 is SUS304 or SUS316
The roof member 3 is formed of a thin stainless plate, and the rising portion 4 is bent and formed at the adjacent end of the roof member 3. The rising portion 4 is formed at an obtuse angle. Then, the rising portions 4 of the adjacent roofing members 3 are opposed to each other so as to form a hypotenuse of triangles and their tips abut against each other, and are integrally connected by seam welding 5. The rising portion 4 arranged on the inner surface of the parapet 2 is laid sideways. Adjacent roofing material 3
A space, which is the same as the space 13 shown in FIG. 5, is formed between the bases of the rising portions 4 of FIG. Also, the parapet 2 of the roofing material 3
The portion corresponding to the base portion is curvedly formed, and the same space as the space 14 shown in FIG. 6 is formed between the corner portion of the base portion of the parapet 2 and the back surface of the roof material 3.

Reference numeral 6 is a roof drain for drainage. The roof drain 6 is arranged at a corner portion of the roof body 1, is fixed to a through hole (not shown) penetrating the roof body 1 as in the conventional case, and the roof material 3 is joined to the periphery thereof. .

By the way, the roof material 3 close to the roof drain 6
An elastic material 7 that absorbs the stress applied to the roof is integrally attached to a. That is, as shown in FIGS. 2 and 3, a long U-shaped slit 8 is formed in the center of the roofing material 3a so as to divide the entire roof material 3a into two.
The elastic member 7 is integrally attached inside. Elastic material 7
A fitting groove 9 is formed on an end surface of the roof member 3, and the edge 8a of the slit 8 of the roofing material 3a is fitted into the fitting groove 9 and integrally pressure-bonded. For example, when chloroprene rubber is used as the elastic material 7, the roof material 3a and the chloroprene rubber are about 17
It may be heated to 0 ° C to 220 ° C and pressure-bonded. Also,
It is sufficient to set the groove width of the slit 8 to 40 mm plus or minus 10 mm.

The reason why the slit 8 of the roofing material 3 is not divided into two and the connecting portion 9 is left to be formed into a U shape is that the connecting portion 9 is formed.
Is necessary for seam welding the roofing material 3a.

The elastic material 7 is preferably made of weather resistant rubber made of chloroprene rubber, but other materials may be used as long as they satisfy the conditions such as weather resistance and flame resistance.
For example, Fluoro rubber, Fluoro silicone rubber, EPDM
(Ethylene-propylene-diene rubber) or the like may be used.

As described above, spaces are formed between the bases of the rising portions 4 of the adjacent roofing materials 3 and between the corners between the roof frame 1 and the parapets 2 and the back surface of the roofing material 3, respectively. Therefore, even if the roofing material 3 expands or contracts due to the outside air temperature, solar heat, etc., the expanded and contracted portion escapes to the space and is absorbed.

Further, even if the roof material 3 expands due to solar heat and the expansion proceeds in the direction of the arrow in FIG. 1, this expansion causes the elastic material 7 in the slit 8 formed in the roof material 31 to contract, so that the roof material 3 is efficiently expanded. Since it is absorbed, stress concentrates on the corners of the roof drain 6 and the roof frame 1, and the roof drain 6 and the roofing material 3 around it.
It is possible to prevent the occurrence of distortion and cracks in the.

Further, since the elastic member 7 is integrally attached to the roof member 3, watertightness can be ensured.

Next, FIG. 4 shows a metal roof structure in the trough part 10 of the roof frame 1, in which the roof material 3 of the trough part 10 is bent in a U-shape, and the adjacent roof material 3 is as described above. In the same manner, they abut via a rising portion 4 formed by rising, and are integrally connected by seam welding 5. Further, the upper ends of the rising portions 11 on both sides of the trough portion 10 are bent inward at a right angle, and the bent groove 12 is engaged with the engaging groove 14 of the eaves drainage 13, and the eaves drainage 13 is a horizontal roof member 3 It engages with the engaging groove 15 at the end of and is continuous.

The elastic material 7 is also attached to the roof material 3a adjacent to the roof material 3 on which the roof drain 6 is arranged. In this example, the bent portion 12 of the roof material 3a is attached to the eaves drainage 13. The stainless steel part is not needed as it only fits and is not welded. Therefore, the roof material 3a is integrally connected to the divided stainless steel portion 16 through the elastic material 7 in the above-described manner.

Even with the above-mentioned metal roof structure, the roofing material 3
When is expanded or contracted, the elastic material 7 expands and contracts to be absorbed, so that stress can be effectively prevented from being concentrated on the roof drain 6 and the like. Further, it is not necessary to perform special processing around the roof drain.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of a metal roof structure near a parapet.

[Figure 2] Plan view of some roofing materials

FIG. 3 is a sectional view taken along line XX of FIG.

FIG. 4 is a perspective view of a main part showing a metal roof structure of a trough part.

FIG. 5 is a perspective view showing an example of a structure that absorbs expansion and contraction of roof material due to heat.

FIG. 6 is a perspective view showing another example of the structure for absorbing the expansion and contraction of the roof material.

FIG. 7 is a cross-sectional view illustrating distortion due to thermal expansion of the roof material near the roof drain.

[Explanation of symbols]

 1 Roof frame 2 Parapet 3 Roof material 4 Rising part 7 Elastic material 8 Slit 11 Trough gutter part

Claims (2)

[Claims] 1. A metal roof structure in which a rising portion is formed by bending at an end portion of a plurality of adjoining stainless roof materials, and adjacent rising portions are connected to form a continuous waterproof surface on a roof frame of a building. In the above, a metal roof structure is characterized in that a long slit that almost divides the roof material into two is formed in a part of the roof material, and an elastic material that absorbs a stress applied to the roof is integrally mounted in the slit. . 2. The metal roof structure according to claim 1, wherein instead of forming a slit in the part of the roofing material, the roofing material is divided into two and integrally connected through the elastic material.