JPH0781317B2 - Truss structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a truss structure constituting a strut frame.

[Conventional technology]

The truss structure is either a single-layer truss (single-layer truss) or a double-layer truss (multi-layer truss) that forms a certain grid depending on the scale, and both structural modes are implemented at the same time. I never adopted it.

[Problems to be Solved by the Invention]

In the conventional Ohari frame structure, a three-dimensional truss structure (multi-layer truss) is generally adopted, and it has a considerable weight as a whole, and there is little heavy feeling in use. By the way, when the membrane structure and the opening / closing ceiling are put into practical use in recent years, It is required to incorporate a membrane structure, an open / close ceiling, etc. in a part of the Ohari frame, and environmentally bright and light, such as incorporating natural light into the room.

On the other hand, the beauty of the structure itself in terms of design has also become a problem.

The inventors have arrived at arranging a single layer truss surrounded by the double layer truss in a part of the double layer truss.

[Means for Solving the Problems]

As a means for attaining the object of the present invention, the following constitution was devised, that is, the periphery is surrounded by a double layer truss constructed so that two or more pyramidal lattices in which triangular pyramids, quadrangular pyramids and the like are combined are continuous in two directions. In addition, it is connected to a double layer truss and distributed to the central part or at multiple points to form a polygonal grid such as a triangle, and a single layer truss having a curved or mountain shape with a high middle is arranged. It is a truss structure that forms the Ohari frame as a whole.

〔Example〕

In the embodiment of FIGS. 1 and 2, the truss structure of the present invention is surrounded by a double layer truss A (multi-layer truss) such as a space truss and is connected to the double layer truss A to form a central portion. A single-layer truss B (single-layer truss) having a curved or mountain shape with a high middle is arranged at one place, and forms a large span frame. The double-layer truss A has a structure in which two or more pyramid-shaped lattices are continuous in two directions by connecting inverted triangular pyramids, and the single-layer truss B has a large number of polygonal lattices in which triangles are continuous. Make up the eyes. In addition, this truss structure is a dome-shaped truss structure of an Otori-makan frame, which has a curved upper surface and a hexagonal surface.

In the embodiment of FIGS. 3 and 4, double layer truss A
Is a lithographic plate, and pyramids are connected in series to form a pyramid-shaped lattice, and the single-layer truss B is dome-shaped and has a triangular lattice as in the above-mentioned embodiment. Is a quadrangle on the plane as a whole.

In the embodiment shown in FIGS. 5, 6 and 7, the periphery and center of the truss structure are double layer truss A,
Surrounded by double-layer trusses, single-layer trusses B are arranged in four locations. The truss structure is in the shape of a folded plate as a whole.

In the embodiment shown in FIGS. 8 and 9, the double layer truss A is used.
Is the same as the above embodiment, but single layer truss B
Shows the case where the polygonal lattices of No. form a triangular lattice in which the polygonal lattices are concentrated in the central portion, and the entire single-layer truss B has a pyramid shape of a mountain.

FIG. 10, FIG. 11 and FIG. 12 show modified examples of other embodiments, in which a large lattice or frame is constructed with a double layer truss A and a space surrounded by them is constructed with a single layer truss B. It was done.

〔The invention's effect〕

The present invention is constituted as described above, and is surrounded by a double layer truss constructed so that two or more pyramid-shaped lattices are continuous in two directions, and is distributed in the central portion of the structure or in a plurality of locations to form a single layer truss. By continuously connecting and assembling, it is possible to reduce the weight and the number of members as a whole. In addition, the single layer truss section has a curved middle or a mountain shape to improve the proof stress. Furthermore, the single-layer truss portion or the double-layer truss portion is appropriately used as a lighting portion, so that a light and bright space can be freely formed.

[Brief description of drawings]

1 and 2 are plan and perspective views showing an embodiment of the present invention, FIG. 3, FIG. 4 and FIG. 5, FIG. 6, FIG. 7, and FIG.
FIG. 9 and FIG. 9 are plan views showing another embodiment and I-, respectively.
I, II-II, III-III, IV-IV sectional view, FIG. 10, 11
FIG. 12 is a plan view showing a part of another embodiment. A: Double layer truss, B: Single layer truss.

Claims (3)

[Claims] 1. A plurality of polygonal lattices are surrounded by a double layer truss constructed so that two or more pyramidal lattices are continuous in two directions, and are connected to the double layer truss. A truss structure characterized in that a single-layer truss having a curved or mountain shape with a high middle is arranged to form a large span frame. 2. The truss structure according to claim 1, wherein the single-layer truss is surrounded by the double-layer truss of the Owari frame and is arranged at one place in the central portion. 3. The truss structure according to claim 1, wherein the single-layer truss is surrounded by the double-layer truss of the Owari frame and is arranged at a plurality of locations in a dispersed manner.