JPH1122010A - Structure of shell structures - Google Patents

Abstract

PROBLEM TO BE SOLVED: To largely expand a degree of freedom of design of a shell roof frame by arranging an outside ring in a footing part, arranging an inside ring in an intermediate position of the footing part and a top part, and dividing the roof frame into an outside roof frame and an inside roof frame. SOLUTION: An outside ring 1 such as a concrete ring-shaped wall is arranged in a footing part of a lower end outer periphery of a shell roof frame, and an inside ring 2 is horizontally arranged in an intermediate position of the footing part and a top part, and the shell roof frame is divided into an outside roof frame 3 and an inside roof frame 4. The inside ring 2 is constituted in a ring shape by combining a steel frame being a backing of the outside roof frame 3. A shape of the inside roof frame 4 can be formed in the shape of continuing with the outside roof frame 3 by the inside ring 2, and can also be formed in a shape different in a radius of curvature or a hollow shape without arranging a roof member. Therefore, a degree of freedom of design can be expanded, and the inside roof frame 4 is separately assembled, and can be integrally placed on the outside roof frame 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the structure of a shell-like structure.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, in a conventional shell-like structure, a tension ring b is arranged on the outer peripheral foundation in order to oppose a thrust force acting on the outer peripheral foundation of the roof frame a. I was

[0003]

As described above, the conventional shell-like structure is restricted in that the tension ring is disposed on the outer peripheral base portion, so that the degree of freedom of the structure is limited, and the design of the design is limited. The width was limited.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and greatly expands the degree of freedom of the structural form, and can adopt various forms in terms of design. It is intended to provide a structure of a structure.

[0005]

In order to achieve the above object, a shell-like structure according to the present invention comprises an outer ring provided on a base portion of an outer periphery of the shell-like structure. At the intermediate position between the top and the base of the object, it is characterized by the structure of a shell-like structure, which is provided with an inner ring so as to cross horizontally.

[0006]

Embodiments of the present invention will now be described with reference to the drawings.

<A> Outer ring. Since the cross section of the shell-like structure is basically a semicircle or a circular arc, an outer ring 1 is provided on the outer peripheral base at the lower end. The outer ring 1 is a structure for preventing the base portion from expanding by the thrust acting on the roof frame. Therefore, a known structure such as a concrete annular wall can be employed. The planar shape of the outer ring 1 is not limited to a circle, but may be a polygon, an ellipse, or the like.

<B> Inner ring. The inner ring 2 is installed at an appropriate position between the base and the top of the shell-like structure. That is, the shell-shaped structure is divided into the outer roof frame 3 and the inner roof frame 4 by the inner ring 2. The inner ring 2 is disposed at a position horizontally crossing the roof frame in a state where a sphere is cut horizontally like a longitude line of the earth. The inner ring 2 has a closed linear shape such as a circular shape, a polygonal shape, or an elliptical shape in combination with a steel frame serving as a foundation of the outer roof frame 3.

<C> Cross section at the top. The inner roof frame 4 on the top side with respect to the inner ring 2 can adopt various cross-sectional shapes. For example, as shown in FIG. 2, the cross-sectional shape of the inner roof frame 4 is changed to the shape of the extension of the inner ring 2 and the outer ring 1, that is, the outer roof frame 3.
Can be formed as an extension of the cross-sectional shape. Alternatively, as shown in FIG. 3, the cross-sectional shape of the inner roof frame 4 may be configured by adopting another radius of curvature deviating from the extension of the cross-sectional shape of the outer roof frame 3. Then, it is possible to adopt a design in which the inner roof frame 4 protrudes from the outer roof frame 3 or a design having a gentler inclination than the outer roof frame 3. Alternatively, as shown in FIG.
The portion of the inner roof frame 4 may be hollow without providing a roof member. Then, only the central portion surrounded by the inner ring 2 can adopt a novel design incorporating external air and external light.

[0010]

As described above, the structure of the shell-like structure of the present invention has the following effects since the inner ring 2 is provided substantially horizontally at the middle of the shell-like roof frame. be able to. <A> Since the degree of freedom in the structural form is increased, the range of design choices can be greatly expanded both in terms of design and structure. <B> Since the outer roof frame 3 and the inner roof frame 4 are independent, both can be constructed simultaneously in parallel.
Thereafter, if only the inner roof frame 4 is lifted up and integrated with the outer roof frame 3, the construction period can be shortened.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a shell-like structure of the present invention.

FIG. 2 is a cross-sectional view thereof.

FIG. 3 is a cross-sectional view of another embodiment.

FIG. 4 is a cross-sectional view of another embodiment.

FIG. 5 is an explanatory view of a conventional shell-like structure.

FIG. 6 is an explanatory view of a conventional shell-like structure.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Taiji Morita 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation

Claims (6)

[Claims] 1. An outer ring is provided on a base portion on an outer periphery of a shell-like structure, and an inner ring is provided at a middle position between a top portion and a base portion of the shell-like structure so as to cross horizontally. The structure of the shell-like structure 2. The structure of the shell-like structure according to claim 1, wherein the cross-sectional shape on the top side of the inner ring is formed in the shape of an extension of the inner ring and the outer ring. 3. The structure of the shell-like structure according to claim 1, wherein the cross-sectional shape on the top side of the inner ring is formed in a shape other than the extension of the inner ring and the outer ring. 4. The structure of the shell-like structure according to claim 1, wherein the top side of the inner ring has a hollow shape without a roof member. 5. The structure of the shell-like structure according to claim 1, wherein the outer ring or the inner ring is formed in a circular shape in a planar shape. 6. The structure of a shell-like structure according to claim 1, wherein the outer ring or the inner ring is formed in a planar shape and a polygon.