JP2837830B2 - Pin-supported folded arch structure and supporting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substructure in which a plurality of folded arch structures having a concave cross section are adjacent to each other to form a lower structure (a basic structure such as a reinforced concrete structure or a frame such as a steel frame structure is generally referred to as a lower structure). The present invention relates to a folded arch structure constructed thereon and a supporting device therefor.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional folded arch structure in which a plurality of folded arch structural members each having a concave cross section are formed on a lower structure adjacent to each other. Since the folded arch structure of this type has a relatively small span S (10 to 20 m), the folded arch structural members 22A and 22B are used.
Are formed by factory processing or on-site processing using a folding machine, and a plurality of sheets are made adjacent to each other, and a folded arch structure material 22A is supported together with a support 31 on a lower structure 25 having a rectangular shape in plan view on the ground G, and then folded. Arch structure material 22B
Was connected to the folded arch structure material 22A. At this time, as shown in FIG. 8 (B), the ends of the folded arch members 22A and 22B are joined to the lower structure 25 by anchor bolts 26 on the lower structure 25. 8A and fixed to the angled positioning hardware 27 by welding or the like. Then, as shown in FIG. 8A, concrete is again reinforced so as to wrap the ends of the folded arch structural members 22A and 22B. It was cast as the part 25B.

[0003]

However, in such a method of constructing a folded arch structure, the original lower structure 2
Cracks are likely to occur at the joint between the 5 and the additional portion 25B, and there are many problems such as rainwater that has passed down the roof penetrating into the building from the lower structure 25 and rusting of steel materials. there were. In addition, the end portions of the folded arch structural members 22A and 22B are often fixed to the positioning hardware 27 by welding or the like. In this case, the folded arch structural members 22A and 22B are used.
B destroyed the galvanized layer, which also caused rust. Furthermore, when constructing a plurality of folded arch members having a concave cross section on the lower structure adjacent to each other, the panel is processed into a concave or arch shape by in-situ processing by a molding machine. In the case where a plurality of sheets are adjacently formed into a block due to seaming by narrowing of a structural material, a dimensional processing error occurs, it is necessary to construct while correcting those errors, which is extremely time-consuming.

Accordingly, the present invention solves the above-mentioned problems in the conventional folded arch structure, and eliminates the necessity of additional concrete concrete in fixing the folded arch structure material to the lower structural property. A pin-supported folded arch structure and a device for supporting the same, which is capable of accurately positioning each folded arch material without the risk of rusting due to intrusion of rainwater and wind, and capable of shortening the construction period. I will provide a.

[0005]

SUMMARY OF THE INVENTION Therefore, the present invention provides a folded arch structure in which a plurality of folded arch structures having a concave cross section are constructed adjacent to each other. It is characterized by being attached to an anchor bolt on a lower structure via a comb-shaped metal member. Further, in the folded arch structure according to the present invention, the folded arch structure material is folded near each end so that the end of the folded arch material is located outside and below the upper surface of the lower structure. It is characterized by being bolted to the comb-shaped metal piece inserted and clamped between arch structural members, and these are used as means for solving the problem.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of a folded arch structure and a supporting device for the folded arch structure according to the present invention. FIG. 1A is an overall front view of the folded arch structure, and FIG.
2A is an enlarged view of a portion A, FIG. 2 is a side view as viewed from the arrow B in FIG. 1A, and FIG. 3A is a diagram showing a joint between the folded arch structure material and the comb-shaped metal member. ), And FIG. 3 (B) is FIG.
FIG. 3A is an enlarged view of a part D, and FIG. 3C is a perspective view of the packing. The folded arch structure 1 is a folded arch structural material 2 having a concave cross section formed by cutting a flat zinc-plated long steel sheet wound into a coil into an appropriate size as described later by a molding machine. As shown in FIGS. 2 and 3, a plurality of (about 5) folded arch structure members 2 are arranged adjacent to each other, and a large number of folded arch structural member blocks 3 which are narrowed and connected to form a block are formed on the ground G. It is installed and constructed on the lower structure 5. Reference numeral 12 indicates a lighting window provided on the top of the folded arch structure 1.

In the present invention, as shown in FIG. 1 (B), each folded arch structural member 2 having a concave cross section is attached to an anchor bolt 6 on a concrete lower structure 5 via a comb-shaped metal member 7. In particular, the folded arch is arranged such that the end (lower end) 2D of the folded arch structural member 2 is located below and below the upper surface 5U of the lower structure 5 (the distance H is appropriately selected). The vicinity of the end 2D of the structural material 2 is joined to the comb-shaped metal member 7 by a bolt 8. As shown in FIGS. 1B and 3, the comb-shaped metal member 7 includes an angle portion 7A fixed to an anchor bolt 6 embedded in the lower structure 5 by a nut 6A so-called pin support,
Comb teeth 7B are erected at right angles from the angle part 7A at predetermined intervals corresponding to the intervals between the folded arch members 2, and these comb teeth 7B are shown in FIG. 3 (A). As described above, approximately five sheets are placed adjacent to each other, inserted and clamped between each folded arch structure material 2 in the folded arch structure material block 3 which is narrowed and connected to form a block, and joined and fixed by bolts / nuts 8 and the like. You. As shown in FIG. 3 (B), the connecting portions of the folded arch structure members 2 adjacent to each other in the folded arch structure block 3 are connected to one end of one folded arch structure member 2 as described later. The other side edge 2B of the other folded arch structure member 2 surrounds the bent portion of 2A to form a so-called "spring narrowing portion" 9, and the side wall of each adjacent folded arch member 2 is formed. Each comb tooth portion 7B of the comb-shaped metal member 7 is inserted and sandwiched therebetween, and is joined and fixed by bolts and nuts 8 or the like. The space surrounded by the bottom of the groove of each folded arch structure material 2, the comb teeth portion 7B and the angle portion 7A is filled with packing such as rubber as shown in FIG. Thorough prevention of wind intrusion.

Next, a method of forming each folded arch structure member 2 having a concave cross section and a method of constructing a folded arch structure by arranging these adjacently are shown in FIGS. FIG. 4 illustrates steps (A) to (D) in the construction site. In the step (A), the panel length is set to accurately cut a coiled flat-plated galvanized long steel sheet formed on the folded arch structure material 2 having a concave cross section and an arch shape into appropriate dimensions. The adjustment of the roller for transporting the galvanized long steel plate is performed with the marking of the height and the attachment of the limit switch 14. In the step (B), as shown in a cross-sectional view on the right side of the drawing, a flat zinc-plated long steel sheet wound in a coil shape is bent by the first molding machine 13A into a folded arch structure material 2 having a concave cross section. . When the bending of the predetermined size is completed on the roller, the folded arch structure material 2 is cut at a predetermined length by the position detection of the limit switch 14, is moved in parallel as indicated by a dotted line, and is fed by the second molding machine 13B. To form an arch having a predetermined curvature. In the step (C), a plurality of, for example, five pieces of the folded arch structure members 2 formed in the arch having the predetermined curvature in the step (B) are placed adjacent to each other and an automatic squeezing machine is used. The folded arch structure material block 3 which is made into a block as a panel seam is manufactured by seaming in which the folded arch structure material blocks 3 are connected to each other by a "squeezing" 9 as shown in FIG. The centering as the third block is also performed.
In the step (D), the comb-shaped metal member 7 and the attached metal members are attached to the folded arch structure material block 3 as five connected blocks as shown in FIG. 3A.

In the step (E) of FIG. 5, the folded arch structure material block 3 is moved over the lower structure 5 by a comb-shaped metal member 7 joined to the vicinity of the end of the folded arch structure material block 3 by a crane truck. Suspension for fixing to the anchor bolt is performed. In the step (F), the steps (C) to (E) are repeated, and the folded arch structure material blocks 3 are sequentially installed adjacently and fixed on the lower structure 5. In the step (G) of FIG. 6, trimming of the folded arch structure is performed by seaming between the folded arch structure material blocks 3 installed adjacent to the lower structure 5 and vertical installation adjustment, and the anchor is fixed. Tightening is performed. In the step (H), the steps (C) to (G) are repeated for each block to complete the construction.

The embodiments have been described above. However, within the scope of the present invention, the shape of the building and the lower structure (including the planar shape), the curvature of the folded arch structure material, the shape of the comb-shaped metal, Number of folded arch structure material blocks as panels, seaming form between folded arch structure materials, connection form of comb-shaped hardware to anchor bolts, bonding form of comb-shaped hardware and folded arch material, molding method by molding machine Needless to say, the form of installation of the folded arch structure material block on the lower structure can be appropriately adopted. Also, it goes without saying that the end of the folded arch structure material and the comb-shaped metal can be joined using fixing means such as rivets or spot welding.

[0011]

As described above in detail, according to the present invention, the folded arch structure material is attached to the anchor bolts on the lower structure via the comb-shaped hardware.
By laying an additional portion of concrete on the original lower structure as in the prior art, no crack occurs at the joint between the additional portion and the lower structure, so There is no danger of rainwater entering the building from the lower structure through the cracks or rusting of the steel material. The comb-shaped member inserted and clamped between the folded arch structures in the vicinity of the end of the folded arch structure so that the end of the folded arch structure is located outside and below the upper surface of the lower structure. By being connected to the hardware with bolts, the rainwater that has passed down the roof does not reach the lower structure, but falls directly to the ground from the lower end of the folded arch structure material. There is no danger of intrusion into the building from the body or rusting of the steel material. Moreover, since the comb-shaped metal members are supported on the concrete lower structure by bolting, not only can they be easily attached, but also the folded arch structure material can be fixed in a short time. Furthermore, since the folded arch structure material is divided into blocks by a plurality of panels and accurately guided and positioned by the comb teeth arranged on the comb-shaped hardware, each of the folded arch structure materials is placed on the lower structure. When building, especially when processing panels into concave cross section and arch shape by on-site processing with a molding machine, or when multiple folded arch structural materials are block-adjacent by seaming by narrowing, Even if processing errors occur, they are forcibly corrected to the correct position in the process of being joined to the comb-shaped metal part, and can be constructed in a short time with a very simple structure without welding etc. Therefore, a pin-supported folded arch structure which can be manufactured at low cost and can shorten the construction period, and a supporting device therefor are provided.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a folded arch structure and a supporting device for the folded arch structure according to the present invention, wherein (A) is an overall front view of the folded arch structure, and (B) is an enlarged view of a portion A of (A). FIG.

FIG. 2 is a side view as viewed in the direction of arrow B in FIG.

3A and 3B are views showing a joint between a folded arch structure material and a comb-shaped metal member, wherein FIG. 3A is a view taken in the direction of arrow C in FIG. 1B, and FIG. 3B is a part D in FIG. FIG. 3C is an enlarged view of the packing.

FIG. 4 is a view showing a construction process of a folded arch structure of the present invention, and is a view showing from adjustment of a roller to attachment of a comb-shaped metal member.

FIG. 5 is a view showing a construction process of the folded arch structure of the present invention, and is a view showing from the hanging of the folded arch structure material block to the setting thereof.

FIG. 6 is a view showing a construction step of the folded arch structure of the present invention, and is a view showing a final step from vertical seaming.

FIG. 7 is a view showing a conventional method of constructing a folded arch structure.

FIG. 8 is a view showing a supporting device for a folded arch structure material to a lower structure in a conventional folded arch structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Folded arch structure 2 ... Folded arch structure material 2D ... Lower end 3 ... Folded arch structure material block (arch panel) 5 ... Lower structure 5U ... Upper surface 6 ··· Anchor bolt 7 ··· Comb-shaped hardware 7A · · · Angle part 7B · · · Comb tooth part 8 · · · Bolt 9 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·・ Molding machine 14 ・ ・ ・ Limit switch G ・ ・ ・ Ground

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Seitaro Kamiya 6-2-10 Ginza, Chuo-ku, Tokyo Inside Tomoe Corporation (72) Inventor Satoshi Arai 6-2-10 Ginza, Chuo-ku, Tokyo Stock Company Tomoe Corporation (58) Field surveyed (Int.Cl. ⁶ , DB name) E04B 7/08 E04B 1/32 E04D 3/30

Claims (2)

(57) [Claims] 1. A folded arch structure in which a plurality of folded arch structural members each having a concave cross section are constructed adjacent to each other.
A pin-supported folded arch structure, wherein the folded arch structure material is attached to an anchor bolt on a lower structure via a comb-shaped metal member. 2. The folded arch structure according to claim 1, wherein an edge of the folded arch structure is located outside and below an upper surface of the lower structure. A pin-supported folded arch structure supporting device, wherein the vicinity is bolted to the comb-shaped metal member inserted and clamped between each folded arch material.