JPH0979227A - Joining device of prefabricated panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joining device, having water-and-damp proofness, that causes no looseness after bolting and, further, a prefabricated panel will not be bent at a joint. SOLUTION: Two prefabricated panels 2 and 2 installed with a joining flange 3 on the inner circumference of a skin plate 10 are joined together with a bolt 4 and a nut 5 after interposing a strip sealant 1 between both joints. Two hard material pieces 8 and 8 are bonded to both internal and external side edges of a joined surface of the joining flange 3 one one side with two double-coated tapes 9 and 9, and further each cavity is formed in the strip sealant 1 and the hard material pieces 8 and 8. In succession, each thickness of these hard material pieces 8 and 8 is set to that being equal to the proper clamping thickness WO of the strip sealant 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof / barrel-proof joining device for constructing a barrack structure, a basement or the like by assembling a plurality of prefabricated panels.

[0002]

2. Description of the Related Art Conventionally, when a moat structure or a basement is constructed by assembling steel prefabricated panels, water leakage prevention,
In order to maintain airtightness, the seal material 1 is interposed between the joining flanges 3 and 3 of the prefabricated panel 2 as shown in FIG. 1, and these are joined by pressure contact with fasteners such as bolts 4 and nuts 5.

However, since generally used sealing materials are not completely elastic, the bolts 4 and nuts 5 may loosen over time.

Further, when there are many bolt fastening points, not only is it difficult to tighten the sealing material at the same time or evenly, but the sealing material may flow slowly after tightening. To stop it, I had to retighten a few times and stabilize it.

Further, since the sealing material has no rigidity, there is a problem that the joint portion bends like a joint.

As a conventional solution to this problem, as shown in FIG. 2, a washer 7 having a plurality of protruding claw pieces 6 having a thickness WO equal to the proper tightening thickness of the sealing material 1 is stacked. It has been proposed that the washer 7 bites into the seal material 1 at the time of tightening so as not to be tightened below the proper tightening thickness WO as shown in FIG.

However, this improvement plan is not sufficient for bending stress because it is a one-point joining.

[0008]

SUMMARY OF THE INVENTION Therefore, the present invention is intended to provide a waterproof and moat-proof joining device which does not cause slack after tightening a bolt, and in which the prefabricated panel does not bend at the joining portion.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a plurality of prefabricated panels having joint flanges on the inner periphery of a skin plate are provided with a seal material between the joint flanges. In a joining device for a prefabricated panel that is interposed and bolted, a strip-shaped hard material piece is arranged on the inner and outer edges of the joining surface of the joining flange,
A band-shaped seal material is arranged between the hard material pieces with a gap between the hard material pieces, and the thickness of the hard material piece is set to a thickness WO equal to an appropriate tightening thickness of the band-shaped seal material. Is.

[0010]

When the bolt is fully tightened, the joint flanges are brought into stable contact with each other through the strip-shaped hard material pieces arranged on the inner and outer edges, and the joint portion becomes rigid.

[0011]

4 to 5 show an embodiment of the present invention. FIG. 4 is a sectional view showing a state before tightening, and FIG. 5 is a right end surface of a left prefabricated panel 2 in FIG. 6 and 6 are cross-sectional views showing a state after tightening.

In FIG. 4, reference numerals 2 and 2 denote prefabricated panels in which a skin plate 10 is welded to a frame body made of L-shaped steel material. The strip-shaped hard material pieces 8 and 8 are adhered to the upper and lower side edges with double-sided tape 9 and 9. The strip-shaped hard material piece may be attached to the joint flange 3 by spot welding.

Reference numeral 1 denotes a band-shaped sealing material arranged between the band-shaped hard material pieces 8 and 8, and voids H and H are provided between the hard material pieces 8 and 8, respectively. In the examples, water-expandable butyl rubber was used as the sealing material.

As the hard material pieces 8, 8, those having a thickness equal to the proper tightening thickness WO of the band-shaped sealing material 1 are used.

As constructed above, the bolts 4 and nuts 5 are used to join the joint flanges 3, 3 of the prefabricated panels 2, 2.
6, the upper and lower edges of the joint flanges 3, 3 are joined via the hard material pieces 8, 8 and the thickness W of the band-shaped sealing material 1 is compressed to an appropriate tightening thickness WO.

[0016]

According to the present invention, since the inner and outer edges of the joint surface are in close contact with each other through the hard material piece when tightened with the bolt and the nut, the problem of flexibility, which has been a problem in the past, is solved and the rigidity is excellent. It has a different structure. In addition, the problem that the sealing material protrudes from the upper and lower side edges is eliminated.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a conventional joining device.

FIG. 2 is a vertical cross-sectional view of another conventional joining device before tightening.

FIG. 3 is a vertical cross-sectional view of another conventional joining device during tightening.

FIG. 4 is a vertical sectional view of the embodiment of the present invention before tightening.

5 is a right end view of the left prefabricated panel in FIG. 4. FIG.

FIG. 6 is a vertical sectional view of the embodiment of the present invention before tightening.

[Explanation of symbols] 1 seal material 2 prefabricated panel 3 joint flange 4 bolt 5 nut 6 claw piece 7 washer 8 hard material piece 9 double-sided tape 10 skin plate H void

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location E04B 2/56 644 E04B 1/60 503N F16B 12/02 1/68 D

Claims (1)

[Claims] 1. A joining device for a prefabricated panel, comprising a plurality of prefabricated panels each having a joining flange provided on an inner periphery of a skin plate, and a sealing material interposed between the joining flanges. Band-shaped hard material pieces are arranged on the inner and outer edges of the surface, and a band-shaped sealing material is arranged with a gap between the hard material pieces between the hard material pieces, and the thickness of the hard material pieces is band-shaped. A prefabricated panel joining apparatus having a thickness equal to an appropriate tightening thickness of a sealing material.