JP2016023467A - Repair method for folded-plate roof, folded-plate roof, and fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a repair method for a folded-plate roof, which enables a new folded-plate roof to be installed without removal of the existing folded-plate roof, even when strength of an existing tight frame is decreased.SOLUTION: A repair method for a folded-plate roof fixed to a beam material 10 via an existing tight frame 11 includes the steps of: fixing a fixture 14 for fixing a new tight frame 17 to the beam material 10, in the state of making the existing folded-plate roof 12 and the existing tight frame 11 fixed to the beam material 10; fixing the new tight frame 17 to the fixture 14; and fixing a new folded-plate roof 13 to the new tight frame 17.SELECTED DRAWING: Figure 1B

Description

  The present invention relates to a method for repairing a folded plate roof, a modified folded plate roof, and a fixture.

  Folded plate roofs are widely used as roofs for steel buildings such as factories, gymnasiums, and garages. Folded plate roofs are made of metal and therefore cause deterioration over time, such as corrosion. The folded roof roof, which has deteriorated over time, is repaired by painting or if it is perforated, it is repaired by the cover method.

  The cover method is a method of stacking a new folded plate roof on the existing folded plate roof without removing the existing folded plate roof. Thereby, even when a perforation etc. has arisen widely, a folded-plate roof can be repaired. In addition, compared to replacing the folded plate roof, there is no removal of the existing folded plate roof, temporary scaffolding required for the work, drop prevention equipment, etc. can be minimized, and advantages such as shortening the work period can be obtained. it can. A typical example of such a cover method is described in Non-Patent Document 1. The construction method described in Non-Patent Document 1 uses an existing tight frame that fixes an existing roof to a roof steel beam member, fixes a new tight frame, and a new folded plate roof on the new tight frame. It is to be fixed.

Yasuhiro Suzuki, “Renovation of folded-plate roof”, [online], [Search June 26, 2014], Internet <URL: http://www.kinzoku-yane.or.jp/technical/pdf/special- 16.pdf>

  However, in the construction method described in Non-Patent Document 1, it is difficult to fix the new tight frame when the existing tight frame is corroded and its strength is reduced. For this reason, it is necessary to replace the existing tight frame, and a construction method for removing the folded plate roof has to be adopted.

  The present invention has been made in view of such circumstances, and even when the strength of the existing tight frame is reduced, it is possible to install a new folded plate roof without removing the existing folded plate roof. It is an object of the present invention to provide a method for repairing a folded plate roof, a modified folded plate roof on which the modification method is applied, and a fixture used in the modification method.

  In order to solve the above problems, the present invention provides the following (1) to (8).

(1) A method for repairing a folded-plate roof fixed to a beam material via a tight frame,
In a state where the existing folded plate roof and the existing tight frame are fixed to the beam material, a step of fixing a fixture for fixing the new tight frame to the beam material;
Fixing the new tight frame to the fixture;
Fixing the new folded plate roof to the new tight frame;
A method for repairing a folded-plate roof, comprising:

  (2) The method for repairing a folded plate roof according to (1), wherein the fixing tool is fixed to both end portions along the extending direction of the beam member by hook bolts.

  (3) When fixing the fixing tool to the beam member, an opening for allowing the hook bolt to be inserted into a portion corresponding to both ends of the existing folded plate roof along the extending direction of the beam member. The method for repairing a folded-plate roof according to (2), characterized in that it is formed.

(4) The hook bolt is provided with a protruding portion protruding in a direction different from the bending direction of the hook portion,
The method for repairing a folded plate roof according to (2) or (3), wherein when the fixing member is fixed to the beam member, the protruding portion is visually confirmed and the orientation of the hook portion is grasped. .

(5) an existing tight frame fixed to the beam,
An existing folded plate roof fixed to the existing tight frame;
A fixture for fixing the new tight frame, which is fixed to the beam material through the existing folded plate roof;
The new tight frame fixed to the fixture;
A new folded plate roof fixed to the new tight frame;
A modified folded-plate roof characterized by comprising.

  (6) The modified folded board roof according to (5), wherein the fixing tool is fixed to both end portions along the extending direction of the beam material by hook bolts.

(7) A fixing tool for fixing a new tight frame to a beam material used for repair of a folded plate roof fixed to the beam material via a tight frame,
A base body whose upper surface is a fixed surface for fixing the new tight frame;
Hooks of the hook bolts provided at both ends of the base body on the opposite side of the fixing surface of the base body, and openings for inserting the screw bolt side of the hook bolt provided at both ends of the fixing surface of the base body A notch for inserting the part side,
With
The hook bolt is provided with a protruding portion protruding in a direction different from the bending direction of the hook portion,
The said protrusion part protrudes from the said base body, when the front-end | tip of the hook part of the said hook bolt faces the said beam material, The fixing tool characterized by the above-mentioned.

  (8) The fixture according to (7), wherein the protruding portion is shifted from an extension line of the hook portion.

  According to the present invention, even if the strength of the existing tight frame has been reduced, a method for repairing a folded plate roof capable of installing a new folded plate roof without removing the existing folded plate roof, and It is possible to provide a repaired folded plate roof that has been repaired by the repair method, and a fixture used in the repair method.

It is a top view which shows roughly an example of the repair folding plate roof repaired by the repair method which concerns on one Embodiment of this invention. It is sectional drawing which follows the 1B-1B line | wire in FIG. 1A. It is sectional drawing which follows the 1C-1C line | wire in FIG. 1A. It is the exploded view which decomposed | disassembled and showed the structure shown by the cross section shown to FIG. 1C. It is the perspective view which showed the fixing tool and the hook bolt roughly. It is a side view of a fixing tool. It is sectional drawing which follows the 5-5 line in FIG. (A)-(F) is a figure which shows an example of the fixing operation | work by a hook bolt.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1A is a plan view schematically showing an example of a modified folded-plate roof repaired by the method for repairing a folded-plate roof according to an embodiment of the present invention, and FIG. 1B is a sectional view taken along line 1B-1B in FIG. 1A 1C is a sectional view taken along line 1C-1C in FIG. 1A. Note that the cross-sectional view of FIG. 1C shows an enlarged portion of the fixture.

  As shown in FIGS. 1A to 1C, for example, an existing tight frame 11 having a shape in which peaks and valleys are alternately and continuously repeated on a roof beam member 10 made of H-shaped steel, for example, It is fixed by welding. On the existing tight frame 11, an existing folded plate roof 12 that needs to be repaired is fixed by, for example, bolting using a sword bolt 111 and a nut 112.

  In the modified folded-plate roof renovated by the modification method according to the embodiment, the fixing tool 14 for fixing the new tight frame 17 is fixed to the valley portion of the existing folded-plate roof 12. In the existing folded plate roof 12, an opening 121 into which a fixing member, for example, a hook bolt 15 can be inserted, is formed in advance in a portion corresponding to both end portions along the extending direction of the beam member 10 before repair. (See FIG. 1C). 2 is an exploded view showing the structure shown in the cross section shown in FIG. 1C, and FIG. 3 is a perspective view schematically showing the fixture 14 and the hook bolt 15. As shown in FIG. In FIG. 3, the illustration of the thread of the hook bolt 15 is omitted.

  As shown in FIGS. 1C, 2, and 3, the fixture 14 has an upper surface as a fixing surface 142 to which the new tight frame 17 is fixed, and a lower surface that is placed on a valley portion of the existing folded plate roof 12. A base body 141 serving as a surface 143 is provided. At both end portions of the fixed surface 142, openings 144 through which the portions on the threaded portion 151 side of the hook bolt 15 are inserted are provided. Further, notches 145 for inserting the protruding portions 153 of the hook bolts 15 are provided at both end portions of the mounting surface 143.

  The hook bolt 15 is inserted into the opening 144 via an opening 121 and a notch 145 formed in advance on the existing folded plate roof 12 before the repair. The threaded portion 151 of the hook bolt 15 protrudes from the fixing surface 142 through the opening 144, and the protruding portion is tightened by the nut 16. Moreover, the hook part 152 of the hook bolt 15 faces the beam member 10 side, and can be hooked on the lower surface of the beam member 10, for example, the upper flange 101 of H-shaped steel. The base body 141 of the fixture 14 is fixed to the beam member 10 by hooking the hook portion 152 of the hook bolt 15 to the lower surface of the upper flange 101 and tightening the threaded portion 151 of the hook bolt 15 with the nut 16. In one embodiment, the base body 141 and the beam member 10 are fixed to the hook bolt 15 at two locations on both ends along the extending direction of the beam member 10 in one embodiment.

  The new tight frame 17 is fixed to the fixing surface 142 of the fixing tool 14 by, for example, bolting with bolts 18. A screw hole 146 in which the bolt 18 is fastened is provided in the central portion of the fixed surface 142. In FIG. 3, the fixing tool 14 in which two screw holes 146 are provided in the fixing surface 142 is shown. The screw hole 146 is not limited to two places, and may be one place. The fixture 14 having two screw holes 146 on the fixing surface 142 can be seen, for example, at a location that becomes a joint between the end portions of the new tight frame 17.

  Moreover, as a fixing method of the base body 141 of the fixing tool 14 and the new tight frame 17, it is of course possible to use a fixing method such as welding or goby in addition to the above bolt fastening.

  As shown in FIGS. 1A and 1B, a new folded plate roof 13 is fixed to the new tight frame 17 by, for example, bolt tightening using a sword tip bolt 171 and a nut 172. As for the fixing method of the new tight frame 17 and the new folded plate roof 13, a fixing method such as goby can be used in addition to bolting.

  4 is a side view of the fixture 14, and FIG. 5 is a cross-sectional view taken along line 5-5 in FIG.

  As shown in FIGS. 4 and 5, the hook bolt 15 used in the method for repairing a folded plate roof according to one embodiment is provided with a protruding portion 153 protruding in a direction different from the bending direction of the hook portion 152. ing. Specifically, the protruding portion 153 protrudes in the direction opposite to the bending direction of the hook portion 152, and the length thereof is such that the tip of the hook portion 152 of the hook bolt 15 faces the beam material 10 side. At this time, the length of the fixture 14 protrudes from the base body 141.

  As described above, the projecting portion 153 projects from the base body 141, so that the operator visually observes the projecting portion 153 during the operation of fixing the fixture 14 to the beam member 10, thereby allowing the existing folded plate roof 12 to be observed. In addition, it is possible to obtain an advantage that it is possible to grasp that the hook portion 152 hidden under the flange portion of the beam member 10 is surely facing the beam member 10 side.

  Further, the protruding portion 153 is shifted from the extension line of the hook portion 152 by a predetermined angle θ. By providing such a “displacement” between the protruding portion 153 and the extension line of the hook portion 152, the protruding portion 153 can be brought into contact with the side portion 147 of the base body 141. When the protruding portion 153 contacts the side portion 147, the hook bolt 15 does not rotate any more. For this reason, it is possible to obtain the advantage that “idling” at the time of bolting can be prevented and work efficiency can be improved.

  Further, the predetermined angle θ is preferably set to an angle at which the hook portion 152 faces a direction orthogonal to the beam member 10 when the protruding portion 153 contacts the side portion 147. Thereby, it becomes possible to orient the hook part 152 in a direction orthogonal to the beam member 10 almost automatically during the operation of tightening the hook bolt 15. Moreover, since the side part 147 fixes the protrusion part 153 in the correct position, the danger that an operator may pinch a hand or a finger at the time of fastening is also reduced.

  Furthermore, although it is a position which provides the protrusion part 153, it is preferable that the protrusion part 153 exists in the position corresponding to the inside of the base body 141. FIG. Further, the size of the opening 121 formed in the existing folded plate roof 12 may be a minimum size through which the shaft of the hook bolt 15 passes. Since the plate thickness of the existing folded plate roof 12 is as thin as 1 mm or less, for example, the influence of the rotation radius of the hook portion 152 is small, and the hook bolt 15 can be easily rotated. FIG. 6A to FIG. 6F show an example of fixing work by the hook bolt 15. First, as shown in FIG. 6A, the hook portion 152 of the hook bolt 15 is passed through the opening 121. Next, as shown in FIGS. 6B to 6D, the hook bolt 15 is raised until it becomes vertical, for example. Next, as shown in FIG. 6E, the hook bolt 15 is rotated by 180 °, and the tip of the hook portion 152 is directed toward the beam member 10. Finally, as shown in FIG. 6F, the fixture 14 is placed on the existing folded plate roof 12, and the hook portion 152 is hooked on the upper flange 101 and tightened with the nut 16. Further, during the fixing operation, since the hook bolt 15 is provided with the protruding portion 153, the protruding portion 153 is caught on the existing folded plate roof 12. That is, it is possible to obtain the advantages that the hook bolt 15 can be prevented from dropping during the fixing work and the safety of the work is improved.

According to the method for repairing a folded-plate roof according to such an embodiment,
(1) Open an opening 121 into which a fixing member for fixing the fixture 14 to the beam member 10 is inserted in the existing folded plate roof 12 (2) Fix the fixture 14 to the beam member (3) Fix The new tight plate roof 13 is fixed to the tool 14 (4) The new folded plate roof 13 is removed without removing the existing folded plate roof 12 by following the procedure of fixing the new folded plate roof 13 to the new tight frame. Can be obtained, and a modified folded plate roof to which the modified method is applied can be obtained.

  In addition, the folded roof roof repairing method according to an embodiment does not use the existing tight frame 11 in the repair. For this reason, even if it is a case where the intensity | strength of the existing tight frame has fallen, a new folded-plate roof can be installed, without removing the existing folded-plate roof.

  Further, the hook bolt 15 used as a fixing member for fixing the fixing tool 14 to the beam member 10 protrudes in a direction different from the bending direction of the hook portion 152, and the tip of the hook portion 152 is protruded from the beam member 10. When it faces, it has the protrusion part 153 which protrudes from the base body 141 of the fixing tool 14. As shown in FIG.

According to such a hook bolt 15,
(A) The direction of the hook portion 152 hidden under the existing folded plate roof 12 or the beam member 10 can be grasped only by visually observing the protruding portion 153. (b) The protruding portion 153 is shifted from the extension line of the hook portion 152. Then, the rotation of the hook bolt 15 can be stopped while the hook portion 152 is facing the beam material, and “idle” can be prevented during the bolt tightening. (C) The protruding portion 153 is a side portion of the base body 141. Since it is fixed by 147, it is possible to reduce an accident that an operator may pinch a hand or a finger when tightening, and to improve work safety. (D) Since the protruding portion 153 is caught on the existing folded plate roof 12, a hook The advantage that the fall of the bolt 15 can be prevented can be further obtained.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. Further, the above-described embodiment is not the only embodiment. For example, in the above-described embodiment, the case where the new tight frame 17 is fixed to the fixing tool 14 at the site has been described. However, the present invention is not limited to this, and the new tight frame 17 and the fixture 14 may be integrated by factory processing, for example. In this case, it is only necessary to form the opening 121 in the existing folded-plate roof and fix the new tight frame with the fixture to the beam member 10 by, for example, the hook bolt 15 at the site.

  In addition, the present invention can be variously modified without departing from the gist thereof.

DESCRIPTION OF SYMBOLS 10 Beam material 11 Existing tight frame 12 Existing folded plate roof 13 New folded plate roof 14 Fixing tool 15 Hook bolt 16 Nut 17 New tight frame 141 Base body 142 Fixed surface 143 Mounting surface 144 Opening 145 Notch 146 Screw hole 147 Side part 151 Screw thread 152 Hook 153 Projection

Claims (8)

A method of repairing a folded plate roof fixed to a beam material via a tight frame,
In a state where the existing folded plate roof and the existing tight frame are fixed to the beam material, a step of fixing a fixture for fixing the new tight frame to the beam material;
Fixing the new tight frame to the fixture;
Fixing the new folded plate roof to the new tight frame;
A method for repairing a folded-plate roof, comprising:   The method of repairing a folded plate roof according to claim 1, wherein the fixing tool is fixed to both end portions along the extending direction of the beam member by hook bolts.   When fixing the fixing member to the beam member, an opening for inserting the hook bolt is formed in a portion corresponding to both ends of the existing folded plate roof along the extending direction of the beam member. The method for repairing a folded-plate roof according to claim 2. The hook bolt is provided with a protruding portion protruding in a direction different from the bending direction of the hook portion,
The method for repairing a folded plate roof according to claim 2 or 3, wherein when the fixing member is fixed to the beam member, the protruding portion is visually confirmed and the orientation of the hook portion is grasped. . An existing tight frame fixed to the beam,
An existing folded plate roof fixed to the existing tight frame;
A fixture for fixing the new tight frame, which is fixed to the beam material through the existing folded plate roof;
The new tight frame fixed to the fixture;
A new folded plate roof fixed to the new tight frame;
A modified folded-plate roof characterized by comprising.   6. The modified folded plate roof according to claim 5, wherein the fixing tool is fixed to both end portions along the extending direction of the beam member by hook bolts. A fixing tool for fixing a new tight frame to a beam material, which is used for repairing a folded plate roof fixed to the beam material via a tight frame,
A base body whose upper surface is a fixed surface for fixing the new tight frame;
Hooks of the hook bolts provided at both ends of the base body on the opposite side of the fixing surface of the base body, and openings for inserting the screw bolt side of the hook bolt provided at both ends of the fixing surface of the base body A notch for inserting the part side,
With
The hook bolt is provided with a protruding portion protruding in a direction different from the bending direction of the hook portion,
The said protrusion part protrudes from the said base body, when the front-end | tip of the hook part of the said hook bolt faces the said beam material, The fixing tool characterized by the above-mentioned.   The fixing device according to claim 7, wherein the protruding portion is shifted from an extension line of the hook portion.

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