Fixing structure and fixing jig for tight frame

Abstract

To provide a fixing structure of a tight frame and a fixing jig capable of fixing the tight frame to a receiving beam by simple work using the fixing jig without requiring welding work.SOLUTION: A fixing structure 1 of a tight frame is provided with a receiving beam 10, a tight frame 20, and a fixing jig 30 of a U-shaped clip structure, wherein the fixing jig 30 is characterized in that an insertion port 33 is directed inward in a width direction of the receiving beam 10, and a lower side 21 of the tight frame 20 and an upper flange 11 of the receiving beam 10 are elastically held from above and below by a pair of holding pieces 31. The fixing jig 30 for the tight frame comprises a U-shaped clip structure including the pair of holding pieces 31 arranged in parallel in a thickness direction, a connecting part 32 for connecting one end parts of the pair of holding pieces 31 to each other, and an insertion port 33 provided between the other end parts of the pair of holding pieces 31, and is characterized in that the lower side 21 of the tight frame 20 and the upper flange 11 of the receiving beam 10 can be elastically held from the top and bottom by the pair of holding pieces 31.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fixing structure and fixing jig for a tight frame, and more particularly to a fixing structure and fixing jig for a tight frame that can fix the tight frame to a support beam through simple work using a fixing jig without requiring welding work. [Background technology]

[0002] BACKGROUND ART In large buildings such as warehouses and factories, folded-plate roofs with a concave-convex structure made by folding steel plates are used as roof structures with excellent strength and durability. Folded-plate roofs come in three types: overlap type, seam-fastened type, and interlocking type, and are selected depending on the design of the building and the required durability (Non-Patent Document 1). The overlapping type is a construction method in which two roofing materials are overlapped and attached to bolts attached to the tight frame and then fastened with nuts, resulting in excellent cross-sectional strength and durability. The seam fastening type is a construction method in which fastening fittings attached to the tight frame are sandwiched between the edges of two roofing materials and then wrapped and fastened with an electric seamer, resulting in excellent waterproofing, easy construction, and economical as no bolts are used. The interlocking type is a construction method in which two roofing materials are fastened to the tight frame with fixing fittings and a cap is fitted over the joint, resulting in excellent design as no bolts protrude above the roofing materials. The overlap, seam, and interlocking structures also use a tight frame, which is made by bending strips of sheet metal to form a continuous, roughly hat-shaped structure when viewed from the front, to secure the roofing material to the support beams. The tight frame functions to support and distribute snow loads, wind loads, etc., applied to the roofing material, so the fastening of the tight frame has a significant impact on the durability and safety of the building. In conventional folded-plate roofs, the bottom edge of the tight frame is welded to the top surface of the support beam, which is made of structural steel (Patent Document 1). In detail, the tight frame is installed on the support beam, and the bottom edge of the tight frame is arc-welded to the top surface of the support beam. After welding, the slag is removed, and the rust-preventive coating that was burned off by the arc heat is repainted. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-71039 [Non-patent literature]

[0004] [Non-Patent Document 1] JIS (Japanese Industrial Standards) A6514 "Metal folded plate roof components" Summary of the Invention [Problem to be solved by the invention]

[0005] The conventional technology has the following problems. <1> Work such as welding tight frames, removing slag, and repainting anti-rust coatings must be done while moving around in narrow spaces on support beams and temporary scaffolding, resulting in very poor work efficiency. <2> Welding requires high technical skills and experience, and poor quality welding can lead to poor welding or material breakage, which can result in a lack of strength in the roof structure. <3> Because the quality of welding depends on the skill of the worker, there is a risk that maintaining construction quality will become difficult due to a shortage of skilled workers caused by the declining birthrate and aging population. <4> Welding cannot be performed in bad weather such as rain or strong winds, so the work is dependent on the weather and there is a risk of delays in the process. <5> As the work is carried out at high places such as on beams, with both hands holding the handheld surface and the arc welding machine, there is room for improvement in terms of work safety. <6> If the roofing material or tight frame is deformed due to the effects of a typhoon or earthquake, the tight frame cannot be removed from the support beam unless it is cut by welding, and the existing tight frame cannot be reused.

[0006] An object of the present invention is to provide a fixing structure and fixing jig for a tight frame that solves the above-mentioned problems of the conventional technology. [Means for solving the problem]

[0007] The fixing structure of the tight frame of the present invention comprises a support beam having an upper flange, a tight frame formed by a strip-shaped plate material in a roughly hat shape continuously formed in the longitudinal direction of the plate material, consisting of an upper edge, two lower edges located on both sides below the upper edge, and two connecting edges connecting the upper edge and the two lower edges, and a fixing jig with a U-shaped clip structure having a pair of clamping pieces arranged in parallel in the thickness direction, a connecting portion connecting one end of the pair of clamping pieces, and an insertion port provided between the other end of the pair of clamping pieces, wherein the tight frame is positioned on the upper flange along the longitudinal direction of the support beam, the lower surface of the lower edge is in contact with the upper surface of the upper flange, and the fixing jig has its insertion port facing inward in the width direction of the support beam, and the pair of clamping pieces elastically clamp the lower edge of the tight frame and the upper flange of the support beam from above and below.

[0008] In the fixing structure of the tight frame of the present invention, a plurality of fixing jigs may be arranged on one support beam on the downstream side in the flow direction of the roof material in the width direction of the support beam.

[0009] The fixing structure of the tight frame of the present invention may include a restraining member that restrains from the outside the fixing jig and the side edge of the upper flange opposite the fixing jig in the width direction.

[0010] The fixing structure of the tight frame of the present invention may be such that the restraining material is a band-like or linear body that is wound around the support beam together with the fixing jig and fastened tightly.

[0011] The fixing structure of the tight frame of the present invention may be such that the restraining material is a rivet-like plate-like or rod-like body that is fitted onto the upper flange from above together with the fixing jig.

[0012] The fixing jig for the tight frame of the present invention consists of a U-shaped clip structure equipped with a pair of clamping pieces arranged in parallel in the thickness direction, a connection portion connecting one end of the pair of clamping pieces, and an insertion port provided between the other end of the pair of clamping pieces, and is characterized in that the pair of clamping pieces are configured to be able to elastically clamp the lower edge of the tight frame and the upper flange of the support beam from above and below.

[0013] The fixture for the tight frame of the present invention may be provided with a locking projection that projects toward the inside of the insertion port on at least one of the pair of clamping pieces. [Effects of the Invention]

[0014] The fixing structure and fixing jig for a tight frame of the present invention have at least one of the following effects due to the above structure. <1> The Tite Frame can be securely fixed to the support beam by simply clamping the bottom edge of the Tite Frame and the flange of the support beam with a fixing jig. Furthermore, since no slag is generated by welding and the anti-rust coating is not damaged by heat, there is no need for additional anti-rust treatment. This results in extremely high work efficiency. <2> The work can be easily done by simply inserting the clip-structured fixing jig, so construction quality can be maintained consistently regardless of the worker's level of skill. <3> The work is not affected by rain or wind, so the process is less affected by the weather. <4> Work can be carried out without bulky equipment such as arc welding machines or handheld masks, making the work safer. <5> By removing the fixing jig, the tight frame can be removed from the support beam without damaging the components, facilitating maintenance and replacement of the roofing material and tight frame. [Brief explanation of the drawings]

[0015] [Figure 1] Illustration of the tight frame fixing structure [Figure 2] Fixing jig diagram [Figure 3] Explanatory diagram of Example 2 [Figure 4] Explanatory diagram of Example 3 [Figure 5] Explanatory diagram of Example 4 [Figure 6] Illustrative diagram of Example 5 DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, the fixing structure and fixing jig of the tight frame of the present invention will be described in detail with reference to the drawings. [Example]

[0017] <1> Tight frame fixing structure The tight frame fixing structure 1 of the present invention (hereinafter simply referred to as "fixing structure 1") is a structure for fixing a tight frame 20 onto a support beam 10 in the roof structure of a building A. The fixing structure 1 includes at least a support beam 10, a tight frame 20, and a fixing jig 30 (FIG. 1). The fixing structure 1 has one feature in that the fixing jig 30 has a U-shaped clip structure and elastically clamps and fixes the lower edge 21 of the tight frame 20 and the upper flange 11 of the support beam 10.

[0018] <1.1>Buildings The building A relating to the fixed structure 1 is mainly a large building such as a warehouse or factory. However, it is not limited to these, and includes all structures in which a tight frame 20 is fixed onto a support beam 10 in a half-height roof or similar roof structure, such as a parking lot, bicycle parking lot, automobile repair shop, station building, gymnasium, etc. In the building A, a roofing material 40 made of galvalume steel sheet or the like is placed on the tight frame 20. In detail, the roof material 40 is supported on the upper part of the tight frame 20, and the roof material 40 is fixed to the upper side 22 of the tight frame 20 using bolts or fitting structures provided on the upper side 22 of the tight frame 20. However, since the attachment of the roof material 40 is not the gist of the present invention, it will not be described in detail here.

[0019] <2> beam support The support beam 10 is a beam material that supports the roof material 40 and the load of the roof material 40. In this example, an H-shaped steel beam 10 is used, which is made up of two flanges 11 and a web 12 connecting the two flanges 11, and the flanges 11 are arranged on the top and bottom surfaces. However, the support beam 10 is not limited to H-shaped steel, but may be I-shaped steel, T-shaped steel, channel steel, angle steel, etc. The point is that it is sufficient to have an upper plate into which the fixing jig 30 can be inserted.

[0020] <3> Tight Frame The tight frame 20 is a member that supports the roof material 40. The tight frame 20 is formed by bending a strip-shaped metal plate along the longitudinal direction, and forming a generally hat-shaped structure in a front view continuously in the longitudinal direction. In detail, each hat shape of the tight frame 20 has one upper edge 22, two lower edges 21 located on both sides below the upper edge 22, and two connecting edges 23 connecting the upper edge 22 and the two lower edges 21, and the lower edge 21 is shared with adjacent hat shapes. In this example, hot-dip galvanized steel sheet (JIS G3302) is used as the tight frame 20. However, the material of the tight frame 20 is not limited to this, and hot-dip zinc-5% aluminum alloy plated steel sheet (JIS G3317), hot-dip 55% aluminum-zinc alloy plated steel sheet (JIS G3321), etc. may also be used. The upper surface of the upper side 22 is provided with bolts and fitting structures for fixing the roof material 40.

[0021] <4> Fixture The fixing jig 30 is a member that fixes the tight frame 20 onto the support beam 10. The fixing jig 30 includes at least a pair of clamping pieces 31 arranged in parallel in the thickness direction, a connecting portion 32 connecting one end of the pair of clamping pieces 31, and an insertion port 33 provided between the other end of the pair of clamping pieces 31. In this example, the fixing jig 30 further includes an introduction surface 31a and a locking protrusion 34 (FIG. 2). The spacing of the insertion holes 33, i.e., the distance between the pair of clamping pieces 31, corresponds to the thickness of the flange 11 of the support beam 10 and the lower side 21 of the tight frame 20. In this example, a steel plate bent into a U-shaped clip structure is used as the fixing jig 30. In the present invention, the "U-shaped clip structure" refers to a structure in which the lower side 21 and the upper flange 11 can be elastically clamped from above and below by two clamping pieces 31, and the external shape does not necessarily have to be U-shaped. For example, the fixing jig 30 may be shaped like an inverted U. Furthermore, the material of the fixture 30 is not limited to steel, but may be any material that has a predetermined strength and restorable elasticity.

[0022] <4.1> Introduction The lead-in surface 31a is a surface for facilitating insertion of the fixing jig 30 into the flange 11 or the like. The introduction surface 31a is formed by inclining the end surface on the tip side of the clamping piece 31 inward. In detail, for example, the end surfaces of the upper and lower clamping pieces 31 are inclined toward the insertion port 33 side. The introduction surface 31a may be provided on only one of the upper clamping piece 31 or the lower clamping piece 31. Also, the introduction surface 31a may not be provided.

[0023] <4.2> Locking protrusion The locking projection 34 is a projection for preventing the fixing jig 30 from returning. The locking protrusion 34 is provided on the clamping piece 31 on the inside of the insertion port 33. In detail, for example, the lower surface of the upper clamping piece 31 is made to protrude toward the insertion port 33, and is formed into a single arrow shape pointing toward the insertion port 33 in a side view. By providing the locking projections 34 on the clamping pieces 31, it is possible to prevent the fixing by the fixing jig 30 from loosening due to repeated loads on the roof material 40 caused by wind, vibrations, etc. The locking protrusion 34 may be provided on the lower clamping piece 31 instead of the upper clamping piece 31, or may be provided on both the upper and lower clamping pieces 31. Also, the locking protrusion 34 may not be provided.

[0024] <5> Fixing the tight frame The tight frame fixing structure 1 of the present invention fixes the tight frame 20, for example, by the following procedure. The lengthwise direction of the tight frame 20 is arranged in the lengthwise direction of the support beam 10, and the tight frame 20 is erected on the flange of the support beam 10. At this time, the tight frame 20 is positioned to one side (first side) of the support beam 10 in the width direction. At the position of the lower edge 21 of the tight frame 20, a fixing jig 30 with the insertion port 33 facing the support beam 10 side (second side) is inserted from the first side of the support beam 10, and the lower edge 21 of the tight frame 20 and the upper flange 11 of the support beam 10 are introduced between the upper and lower clamping pieces 31. By inserting the fixing jig 30 in the first side direction, the locking protrusion 34 climbs over the tight frame 20, and the two clamping pieces 31 elastically clamp the lower edge 21 of the tight frame 20 and the upper flange 11 of the support beam 10 from above and below, and the second side surface of the locking protrusion 34 presses against the first side surface of the tight frame 20 to stop the tight frame 20 from moving (shifting) in the width direction. [Example]

[0025] [Example of placing the fixture below the roof flow] In this example, the fixing jig 30 is attached to the downstream side of the width direction of the support beam 10 in the flow direction of the roof material 40. In detail, in the roof structure of building A, when the roof material 40 is inclined in the parallel direction of the multiple support beams 10, multiple fixing jigs 30 are all attached to the downward sloping side of the roof material 40 in the width direction of the support beams 10. In the roof structure of building A, the roof material is subjected to an upward blowing load caused by wind from under the eaves. In this example, by fixing the fixing jig 30 to the support beam 10 in a direction from downstream to upstream in the flow direction of the roof material 40, the roof slope direction component of the blow-up force on the roof material 40 acts to push the fixing jig 30 toward the support beam 10, thereby constantly reinforcing the fixation of the tight frame 20 by the fixing jig 30 (Figure 3). [Example]

[0026] [Examples with strip-shaped or linear restraining materials] In this example, a band-shaped or linear restraining member 50 is provided to prevent the fixing jig 30 from loosening (FIG. 4). The restraining material 50 may be, for example, a belt, glass tape, a binding material, a wire, a rope, a chain, or the like. After clamping the upper flange 11 and the lower edge 21 with the fixing jig 30, the restraining material 50 is wrapped around the support beam 10 together with the fixing jig 30 and fastened tightly. This restrains the back surface of the connection part 32 of the fixing jig 30 and the side edge of the upper flange 11 opposite the fixing jig 30 from the outside, preventing the fixing jig 30 from loosening. [Example]

[0027] [Examples with plate-shaped or rod-shaped restraining members] In this example, a plate-shaped or rod-shaped restraining member 50 is provided to prevent the fixing jig 30 from loosening (FIG. 5). The restraining member 50 may be a clamp member made by bending a steel plate or steel rod into a U-shape in cross section. After clamping the upper flange 11 and the lower edge 21 with the fixing jig 30, the restraining member 50, with both ends facing downward, is fitted onto the support beam 10 from above the fixing jig 30. This restrains the back surface of the connection part 32 of the fixing jig 30 and the side of the upper flange 11 opposite the fixing jig 30 from the outside, preventing the fixing jig 30 from loosening. [Example]

[0028] [Example of placing fixtures on both sides of the support beam] In this example, the fixing jigs 30 are attached to both sides of the support beam 10 in the width direction. In detail, the upper clamping piece 31 of the fixing jig 30 is configured to be longer than the lower clamping piece 31, the tight frame 20 is positioned in the center of the width on the support beam 10, and the lower edge 21 is clamped from both sides of the width of the support beam 10 by multiple fixing jigs 30 (Figure 6). In this example, by fixing the tight frame 20 from both sides of the support beam 10, the positioning function of the fixing jig 30 for the tight frame 20 is improved, and the stability of the fixing structure 1 is increased. [Explanation of symbols]

[0029] 1. Tight frame fixing structure 10 Beam support 11 Flange 12. Web 20 Tight Frame 21 Bottom 22 Top 23 Connecting Edges 30 Fixture 31 Clamping piece 31a Introduction 32 Connection 33 Outlet 34 Locking protrusion 40 Roofing Materials 50 Restraint material A Building

Claims

1. In a roof structure of a building, a tight frame fixing structure for fixing a tight frame supporting a roof material onto a support beam, a support beam having an upper flange; A tight frame is formed by a strip-shaped plate material, and the tight frame has an approximately hat-shaped configuration consisting of an upper side, two lower sides located on both sides below the upper side, and two connecting sides connecting the upper side and the two lower sides, and is continuously formed in the longitudinal direction of the plate material. a fixing jig having a U-shaped clip structure, the fixing jig having a pair of clamping pieces arranged in parallel in the thickness direction, a connecting portion connecting one end of the pair of clamping pieces, and an insertion port provided between the other end of the pair of clamping pieces; The tight frame is positioned on the upper flange along the longitudinal direction of the support beam, and the lower surface of the lower side is in contact with the upper surface of the upper flange, The fixing jig is characterized in that the insertion port faces the inside of the width direction of the support beam, and the pair of clamping pieces elastically clamp the lower edge of the tight frame and the upper flange of the support beam from above and below. Tight frame fixed structure.

2. In one of the support beams, a plurality of the fixing jigs are arranged downstream in the flow direction of the roof material in the width direction of the support beam. The fixing structure of claim 1.

3. The fixing jig and a restraining member that restrains the side edge of the upper flange opposite to the fixing jig in the width direction from the outside are provided. The fixing structure of claim 1.

4. The restraint material is a band-shaped body or a linear body that is wound around the support beam together with the fixing jig and fastened tightly. The fixing structure of the tight frame according to claim 3.

5. The restraint material is a rivet-like plate-like body or a rod-like body that is fitted onto the upper flange from above together with the fixing jig, The fixing structure of the tight frame according to claim 3.

6. In the roof structure of a building, a fixture jig for a tight frame for fixing a tight frame supporting a roof material onto a support beam, A pair of clamping pieces arranged in parallel in the thickness direction; a connecting portion connecting one end of each of the pair of clamping pieces; and an insertion port provided between the other ends of the pair of clamping pieces, The pair of clamping pieces are configured to be able to elastically clamp the lower edge of the tight frame and the upper flange of the support beam from above and below. Fixture.

7. At least one of the pair of clamping pieces is provided with a locking projection that projects toward the inside of the insertion port. The fixture of claim 6.

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