Multi-plane cylindrical shell structure with reinforced folded corners

Abstract

The invention discloses a multi-plane cylindrical shell structure with reinforced folded corners. The multi-plane cylindrical shell structure comprises spherical seal heads, transition sections, polygonal spatial plates and reinforcing plates or reinforcing rods or reinforcing solid structures. The reinforcing plates or the reinforcing rods or the other reinforcing solid structures are arranged on folded corner sunken portions on a cylindrical shell structure, and the folded corner sunken portions are formed by the polygonal spatial plates. Compared with a multi-plane cylindrical shell structure in the prior art, the multi-plane cylindrical shell structure with the reinforced folded corners has the advantages that the multi-plane cylindrical shell structure is good in pressure-resistant property, can bear high ultimate pressure as compared with the multi-plane cylindrical shell structure in the prior art under the condition of identical geometry and material parameters, and is applicable to manufacturing pressure-resistant structures in underwater or underground systems.

Description

technical field [0001] The invention relates to the field of compression structures, in particular to the field of compression structures in underwater or underground systems. Background technique [0002] In order to enhance the external pressure resistance of structures in underwater or underground systems, some special designs or reinforced structures are usually made in the structural form. The U.S. invention patent US005711244 discloses a multi-plane cylindrical shell structure with strong external pressure resistance. The cylindrical part of this structure is formed by folding and splicing plane plates in space according to a certain period, and the tail is a spherical head structure. , the cylindrical part and the spherical head are connected through a transition section to form a sealed structure similar to a cylindrical shell. [0003] In this form of multi-planar cylindrical shell structure, since the plane plates are folded and spliced ​​in space, the bending mom...

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Problems solved by technology

[0004] Based on the above defects, the technical problem to be solved by the present invention is to improve the deficiencies of the existing multi-planar cylindrical shell structure, such as insufficient axial stiffness, bending stress at the knuckles, and excessive concentration of stress at the sharp point, and propose a strengthening method for the multi-planar cylindrical shell structure , so as to obtain a new locally reinforced multi-planar cylindrical shell structure with good compressive performance, high axial stiffness and relatively weak stress concentration at the cusps

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