JPS62236933A - Cone-shaped roof dome - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to a conical roof dome that covers a large space with a span of several tens of meters to several hundred yl.

(Problem to be solved by the invention) There are currently many forms of roof structures that cover large spaces, but air membrane structures are particularly preferred for large span structures of several hundred meters in terms of structure, cost, etc. , and practical application is also progressing. However, in the case of single-layer membranes, which are also used for the purpose of securing height, compressed air must be constantly pumped in, and in addition to the cost that cannot be ignored, detailed consideration of artificial ventilation, snow melting equipment, etc. is required. There is a problem that the construction becomes complicated.

This invention reduces the problems faced by the air membrane structure,
It was also created for the purpose of proposing a new large-space structure, and attempts to construct a large-space roof structure by stacking frustum-shaped frames.

(Means for Solving the Problems) In the present invention, a roof frame for a large space is realized by stacking ring frames formed in the shape of a truncated cone.

The ring frame consists of annular connecting rings placed at a distance vertically for interconnection, strings connecting these vertically, and connecting rings horizontally connecting these rings, and consists of several rings of different sizes. The frame forms a conical roof structure and dome.

Several ring frames are stacked in descending order of size and connected to each other in a connecting ring.

Since the connection at this connection part is compression, it is sufficient to simply butt the two connection rings together and connect them.Also, the upper connection ring of the ring frame is a compression ring, and the lower connection ring is a tension ring. Since they cancel each other out, each reinforcement will be minor.

The chord material consists of an upper chord material and a lower chord material, and a connecting material is inserted between them to form a lattice. At the joint of the ring frame, the upper chord material is discontinuous to provide a ventilation opening here to enable natural ventilation.

At the top of the dome, in addition to the frustum-shaped ring frame, rests a conical ring frame in which a connecting ring is arranged only at the bottom.

The dome can be formed into various three-dimensional shapes such as a cone, a truncated cone, a pyramid, a truncated pyramid, and an ellipsoid.

(Example) The present invention will be explained below based on the drawings showing one embodiment.

The conical roof dome A (hereinafter referred to as dome A) of this invention has several frustum-shaped ring frames a-1, a-2, a-3, a-
4, as shown in Figures 1 and 2, from large ring frame a-j to small ring frame a-4.
It is constructed by stacking one after another.

The drawings show an embodiment in which the dome A is formed into a conical shape, and in this case, the ring frame a-4 placed on the top is formed into a conical shape.

Ring frame a j , a-2, a-3, a-4
Mutual connections are made using connection rings 1.1 as shown in Figures 4 and 5.
The largest ring frame a-1 is connected to and supported by the tension ring b of the support structure B as shown in FIGS. 6 and 7.

In this embodiment, as shown in FIGS. 1 and 2, ring frames a-1, a-2, and a-5 are upper and lower annular connecting rings 1
, 1, and a connecting ring 3 that horizontally connects the string members 2 and 2 in the vertical direction. It consists of 3.

The interconnections of ring frames a-2 and a-i are shown in FIG.
It is shown in FIG.

The embodiment shown in FIG. 4 has a connecting ring 1 formed in an annular shape,
1 are simply butted against each other and joined, and the 5th
The embodiment shown in the figure is a case where both connecting rings 1, 1 are joined via a gusset plate 6 and a steel material 7 attached thereto.

The chord member 2 consists of an upper chord member 2a and a lower chord member 2b, which are joined to the upper and lower ends of the connecting ring 1, respectively. Both methods material 2
A connecting material 4 is inserted between a and zb to form a lattice.

In addition, as shown in FIGS. 2 and 3, a place 8 for reinforcement may be installed between the pair of opposing connecting rings 3, 3 and the opposing upper chord members 2a, za or lower chord members 2b, 2b as required. Put in.

At the interconnection parts of ring frames a-1, a-2, etc., the second
As shown in the figure, a portion of the upper chord member 2a is connected to the lower chord member 2b so as to be discontinuous, and openings C are formed under the upper chord member 2a that protrudes like an eave, and these are provided at several locations in the dome A. This opening C becomes a ventilation hole, and natural ventilation within the dome A is performed here.

By installing an air tube in this opening C, it is possible to adjust the ventilation amount by utilizing the expansion and contraction of the air tube.

A membrane material 5 is stretched over the dome A as a roofing material, but this membrane material 5 is also discontinuous at the connecting portion.

FIG. 6 shows the state in which the largest ring frame a-1 is supported on the substructure B, and its connecting ring 1 is supported on the tension ring b of the substructure B in a roller manner.

(Effects of the Invention) The present invention is as described above, and as a result of eliminating the need for equipment such as air blowing and ventilation required for air membrane structures, a large space roof frame that can save energy in maintenance and management is realized. become.

Since the frame is constructed by stacking ring frames, it is possible to create frames with relatively free shapes such as conical, pyramidal, and ellipsoidal shapes.

[Brief explanation of drawings]

Figures 1 and 2 are schematic diagrams showing how ring frames are stacked, Figure 6 is a perspective view showing the structure of one ring frame, and Figures 4 and 5 show details of the connection parts. FIGS. 6-1 and II are side views showing the support portion of the lowermost ring frame, and FIG. 6 is a sectional view taken along line X-X, and FIG. . A: Conical roof dome, B: Support structure, a-1, a-2
, a-3, a-4: ring frame, b: tension ring,
C: opening, 1: connecting ring, 2a: upper chord material, 2b = lower chord material, 3: connecting ring, 4: connecting material, 5: membrane material, 6: gusset plate, 7: steel material, 8 nib brace. Prisoner 2 113 Figure 4! 6 sides of wealth!

Claims (1)

[Claims] (1) Formed in the shape of a frustum, consisting of annular connecting rings of different sizes and positioned horizontally at distances above and below, string members that connect them vertically, and connecting rings that connect the string members horizontally. The ring frame is constructed by sequentially stacking several ring frames, starting from the largest one, and connecting them to each other at a connecting ring. shaped roof dome.