JPH09137510A - Cross section joining structure of truss member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost by mounting each truss member on an upper face and a lower face of a joint plate in such a manner that the truss members cross each other and mounting the other truss members at the other position of the joint plate in such a manner that they face to each other. SOLUTION: A joint plate 4 is provided at a joint point where truss members 1, 2, 3 of a steel pipe which are provided in such a manner that they cross in three directions cross. The truss member 1 and the other truss member 2 cross across the joint plate 4 and are arranged in such a manner that both truss members 1, 2 are positioned up and down on a surface and a rear surface of the joint plate 4 to fix them by surrounding the truss members 1, 2 by using a U-shaped bolt 6. Next, the other truss member 3 is fixed by using a bolt 10 in such a manner that is faces from both sides in a space part of the joint plate 4 so that basic constituent elements by the truss members form a triangle. Consequently, it is possible to simplify details of the joint section greatly and facilitate an assembly work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for connecting truss members of a single-layer frame structure used for an arbitrary curved surface such as an HP shell curved surface.

[0002]

2. Description of the Related Art A single-layer frame structure that forms an HP shell curved surface or an arbitrary curved surface as shown in FIGS. 7 and 8 has been used in a conventional joint structure in a joint structure of a truss member intersecting in three directions. Part structures include semi-rigid joints such as ball joints and full-weld joints using steel balls. With such a joint method, the joint portion is expensive to manufacture, and the joint work is not easy.

On the other hand, in the joint structure type in which the truss members installed in two directions are vertically overlapped with each other, the basic frame components are quadrangular and the structural characteristics are inferior to those of the triangular type. In addition, in the joint structure type in which the truss members erected in three directions are stacked in three stages so that they intersect vertically, the basic frame components are triangular, but the joints are bulky because of the three-stage structure. , The joint structure has not been realized yet.

By the way, there is known a device of Japanese Utility Model Publication No. 52-55846 concerning a connecting structure of vertical and horizontal members in a structure such as a structure having a large dome or a roof having an arched curved surface. , The structure is such that bolts are inserted at the intersections of two intersecting vertical frame members and horizontal frame members, and a large number of parts are required, and the basic frame components are quadrangular, resulting in poor structural characteristics. There is a drawback that.

[0005]

DISCLOSURE OF THE INVENTION The present invention makes it possible to realize a joint structure in which the basic frame components are triangular and the truss members erected in three directions vertically intersect each other, and can be manufactured at low cost. The problem to be solved is to provide a cross-joint structure of truss members of a single-story frame structure which is easy to construct and has excellent structural characteristics.

[0006]

According to the present invention, the truss members are attached to the upper surface and the lower surface of the joint plate so as to intersect each other, and the other position of the joint plate is different from the direction of the truss member. The truss members are attached so as to face each other, and the truss members are arranged so as to intersect the upper and lower surfaces of the joint plate. The truss members are attached to the joint plate by U-shaped bolts or welding.

That is, according to the present invention, the truss member has a two-stage structure in which the upper surface and the lower surface of the truss member are intersected with each other through the joining plate. In addition to the two-direction truss member, the truss member is joined in the other direction. The three-direction truss member has a two-stage structure because it is attached directly to the.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a joint portion having an intersection joining structure according to the embodiment, and FIG. FIG. 4 is a side sectional view of the main part in the AA direction of FIG. FIG. 3 is a side view showing a cross-section of the main part in the BB direction of FIG.

First, the structure shown in the figure is a node at which truss members 1, 2 and 3 of a steel pipe which are erected so as to intersect in three directions intersect, and truss members 1 and 2 in two of these three directions. 2 and 3 intersect each other and are stacked one above the other as shown in FIGS. 2 and 3, and these truss members 1,
The superposition of the two is performed by arranging only one joining plate 4.

On the joint plate 4, each truss member 1,
2 are mounted at predetermined angles and positions via U-shaped bolts 6, respectively. Next, of the truss members 1, 2, 3 for crossing in three directions, the remaining truss member 3 in one direction
As shown in FIGS. 1 and 3, the bolts 10 are attached to the joint plate 4, but in this embodiment, they are attached to the joint plate 4 via a joint plate 18 welded to the truss member 3 of the steel pipe.

As described above, the present invention uses one joint plate 4, and the truss member 1 is sandwiched between the joint plates 4.
And another truss member 2 are arranged on the front surface and the back surface of the joint plate 4 so as to intersect with each other so that the two trust members 1 and 2 are vertically positioned. While surrounding each truss member 1 and 2 with the U-shaped bolt 6, the tip of the U-shaped bolt 6 is fixed by penetrating the joining plate 4. Thus both truss members 1,
The two are easily and securely mounted in a cross.

Next, there are three basic components made up of truss members.
In order to have a prismatic shape, the truss member 1,
The other truss members 3 are arranged and fixed so as to oppose each other from both sides in the space of the joint plate 4 formed by intersecting two. By using such a joint structure for the joint of each truss member, a triangular basic frame structure can be obtained.

Next, the embodiment shown in FIGS. 4, 5 and 6 is another embodiment and is an example in which two joining plates 4 are used. That is, the truss member 1 is integrated with the joining plate 4 via the rib plate 7, and the truss member 2 is also integrated with the joining plate 4'through the rib plate 7 ', and both joining plates 4, 4'are The truss members 1 and 2 are arranged so that they intersect each other, and are integrally fixed by a bolt 11.

Further, the joint plates 4 and 4'and the truss members 3 and 3 are joined to each other by the bolts 1 through the attachment plates 12 and 12 '.
They are integrated by 0. Thus, the joining structure of the truss members at the intersection portion is joined and assembled as shown in FIG. It is needless to say that other steel materials such as H-shaped steel may be used instead of the truss member of the steel pipe of the present invention.

[0015]

【The invention's effect】

1. The structural characteristics required for a single-story frame structure are secured by this joint structure, and it can be applied to a large span frame structure. In other words, the out-of-plane rigidity required for a single-layer frame structure is obtained by intersecting two truss members vertically.
The in-plane rigidity is obtained when the basic frame components are triangular. 2. The joint structure of the truss members of the present invention can have a two-stage structure despite the use of the three-direction truss members, so that the truss members are not bulky like the three-stage structure and the three-direction truss members are stable. Can be joined together. 3. By adopting this joint structure, the joint details can be greatly simplified. Thereby, the joint portion can be manufactured at low cost, and the assembling work can be easily and inexpensively performed.

[Brief description of the drawings]

FIG. 1 is a plan view showing a joint portion having an intersection joint structure according to an embodiment of the present invention.

FIG. 2 is a side sectional view of a main part in the AA direction of FIG.

FIG. 3 is a side view showing a cross-section of the main part in the BB direction of FIG.

FIG. 4 is a plan view showing a joint portion having an intersection joint structure according to another embodiment.

FIG. 5 is a side view of the main part in the CC direction of FIG.

FIG. 6 is a side view of the main part in the DD direction of FIG.

FIG. 7 is a main part plan view showing a frame structure of an HP shell curve.

FIG. 8 is a side view of FIG. 6;

FIG. 9 is a partial plan view to which a crossing joint structure of truss members of the present invention is applied.

[Explanation of symbols]

1 truss member 2 truss member 3 truss member 4 joint plate 4'joint plate 6 U-shaped bolt 7 rib plate

Claims (4)

[Claims] 1. Truss members are attached to the upper surface and the lower surface of the joint plate so as to intersect each other, and other truss members are opposed to each other at other positions of the joint plate in a direction different from the direction of the truss member. The joint structure of the truss members attached as above. 2. The joining structure for an intersection portion of truss members according to claim 1, wherein the truss members arranged so as to intersect the upper surface and the lower surface of the joining plate are attached to the joining plate by U-shaped bolts. 3. Attachment of the joining plate and the truss member,
The structure for connecting the truss members at the intersections according to claim 1, wherein the rib plates are welded together. 4. The joint structure for a truss member at the intersection according to claim 1, 2, or 3, wherein a steel pipe or another steel material is used as the truss member.