JPH06997B2 - Fire Day Arch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a field arch for constructing a large space building such as a gymnasium or a hangar.

(Prior Art) Conventionally, a large space building such as a gymnasium, a hangar, or a factory is mainly constructed by a space frame (three-dimensional structure).

The space frame is constructed by assembling a basic grid of a space truss such as a quadrangle or a triangle according to the scale of the building, and is suitable for the construction of a large space building.

(Problems to be Solved by the Invention) However, according to the conventional space frame, at least 6 to 7 members, which are at least 6 to 7, are concentrically concentrated in one point at the nodal portion of the space frame. Not only that, the joints or joints were complicated and assembly was extremely troublesome.

The present invention has been proposed in order to solve the above-mentioned conventional problems, and it is possible to reduce the number of members as much as possible to simplify the entire structure and the node portions (joint portions) and simplify the assembly work. The object is to provide a feelered arch that can be achieved.

(Means for Solving Problems) A fielder arch according to the present invention is a joint for connecting upper chord members, lower chord members, a bundle member that joins the upper chord members and the lower chord members, and adjacent field end arches. A node unit composed of a lumber, and an intermediate unit composed of an upper chord member and a lower chord member, which is installed by joining the node unit and the upper chord member and the lower chord member, respectively, between the node units, and the node At the ends of the upper and lower chords of the unit and the intermediate unit, and the connecting material,
It is configured by providing joint flanges for joining the lower chord members and the joining members, respectively.

(Exemplary Embodiment) The fielder arch 1 comprises a nodal unit 2 and an intermediate unit 3, which will be described below with reference to an illustrated embodiment of the present invention.

The node unit 2 has upper and lower chord members 4, 5 and a bundle member 7 connecting the upper chord member 5 and the lower chord member 6 and the lower chord member 5 on both sides substantially at the center thereof. For joining, it is composed of connecting members 8 and 8 which are provided so as to project at a right angle thereto.

The upper chord member 4 and the lower chord member 5 and the bundle member 7, and the lower chord member 5 and the joint member 8 are rigidly joined by welding or the like.

All of these members are formed of steel pipes, the lower chord member 5 is the thickest, and the connecting member 8, the upper chord member 4, and the bundle member 7 are gradually reduced in diameter in this order. Furthermore, the bundle 7 at the center of the arch is thickest and gradually shortened toward both ends.

Further, a joining flange 9 having a diameter slightly larger than the diameter of each member is formed at the tip of each member except the bundle 7.

The intermediate unit 3 includes an upper chord member 10 and a lower chord member 11, and the upper chord member 10 and the lower chord member 11 each have a node unit 2.
A steel pipe having the same diameter as the upper chord member 4 and the lower chord member 5 is used. At both ends of the upper chord member 10 and the lower chord member 11, a joining flange 12 having a diameter slightly larger than the diameter of these members is provided.
Are formed respectively.

The node unit 2 and the intermediate unit 3 configured in this way
Are joined alternately by bolting the joint flanges 9 and 12 with high-strength bolts, and as a result, an integral fieldel arch 1 having a constant curvature is formed.

Both ends of the fieldal arch 1 have a column base 13
It is firmly pinned to.

Further, the fieldel arches 1 are installed at regular intervals in the width direction, and the connecting members 8 of adjacent fieldel arches 1 and 1 are joint flanges 9 and 9.
Are joined together by bolting with a high strength bolt.

With such a configuration, the span direction of the feeler arch 1 is configured as a double arch composed of an upper chord member and a lower chord member, and the orthogonal direction of the feeler arch 1 is configured as a single arch composed of only the connecting member 8. It is designed to have as few components as possible.

It should be noted that warm air is passed through the upper chord member, the lower chord member, and the connecting member 8 of the feeler arch 1 to warm these members and, if necessary, part of the warm air is discharged to the outside to melt snow on the roof surface. Can be planned.

(Effects of the Invention) A fielder arch according to the present invention is a node composed of an upper chord member, a lower chord member, a bundle member that joins the upper chord member and the lower chord member, and a joint member that joins adjacent Fieldend arches. A unit and an intermediate unit composed of an upper chord member and a lower chord member, which is installed between the node unit and the upper chord member and the lower chord member, respectively, and is provided between the node unit and the lower chord member; and On the ends of the upper chord, lower chord and tie,
Since it is configured by providing joint flanges for joining the lower chord members and the connecting members, respectively, the required number of node units and intermediate units are used for the high-strength bolts of the joint flanges at the ends of the upper chord member and the lower chord member. It is possible to easily construct a fieldend arch with an arbitrary span by alternately installing them while joining them with each other.

In addition, the joints of the upper chord member, lower chord member, and connecting material of the node unit and the intermediate unit are all located away from the nodes, so avoiding concentration of the member joints and simplifying the nodes. , Stress concentration can be avoided.

In addition, there are joint flanges at the ends of the upper chords, lower chords, and ties for the node unit and intermediate unit for joining the upper chords, the lower chords, and the joints. The members can be easily joined to each other by joining them with a high-strength bolt or the like.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention, and FIG. 1 is a partial side view of a fieldel arch,
2 and 3 are enlarged plan views and enlarged side views of the foot of the fieldend arch, and FIGS. 4 and 5 are partially enlarged perspective views and partially enlarged exploded perspective views of the fieldend arch. FIG. 6 is a perspective view of a large space building constructed by the Feelendale arch. 1 ・ ・ Fieldend arch, 2 ・ ・ Nodal unit, 3 ・ ・ Intermediate unit, 4 ・ ・ Upper chord member, 5 ・ ・ Lower chord member, 7 ・ ・ Bundle member, 8 ・ ・ Connecting member, 9 ・ ・ Joining flange, 10 ... upper chord material, 11 ... lower chord material.

Claims (1)

[Claims] 1. In a fieldel arch for constructing a large-scale building, a joint connecting an upper chord member, a lower chord member, a bundle member that joins the upper chord member and the lower chord member, and adjacent fieldend arches. A node unit composed of a lumber and an intermediate unit consisting of an upper chord member and a lower chord member, which is installed between the node units by being joined to an upper chord member and a lower chord member of the node unit, respectively, and the node A fieldel arch characterized in that a joining flange for joining the upper chord members, the lower chord members, and the joining members to each other is provided at the ends of the upper chord members, the lower chord members, and the tie members of the unit and the intermediate unit, respectively. .