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Form finding method of cable net structure

A cable-net structure and cable-net technology, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve the problems of low efficiency and difficult convergence of the classical inverse iteration method, reduce the possibility of algorithm divergence, and make it more versatile. performance, high efficiency

Pending Publication Date: 2021-05-14
BEIJING INST OF ARCHITECTURAL DESIGN
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Problems solved by technology

However, when the shape of the cable network is complex or the load distribution is uneven, the classical inverse iteration method is inefficient and difficult to converge

Method used

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  • Form finding method of cable net structure
  • Form finding method of cable net structure
  • Form finding method of cable net structure

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Embodiment Construction

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

[0042] like Figure 2-6 As shown, the cable net structure is formed by connecting two groups of cables with different curvatures in different directions (cable 1 and cable 2 2), and the boundar...

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Abstract

The invention discloses a form finding method of a cable net structure, which specifically comprises the following steps of: obtaining a group of coordinates and internal force of a cable net by utilizing a classical force density method in a non-load state, taking the configuration as an initial form, solving node coordinates and internal force of the structure under the load by continuously correcting the internal force of the structure under the load effect, namely afeasiable form, and completing form finding and force finding work. The coordinates and the internal force of the initial state are determined through the classical force density method, and the force density method is good in convergence and high in efficiency; the initial form is approximate to the feasible form, and the partial inverse iteration method only corrects the internal force of the cable net structure, so that the probability of algorithm divergence is reduced; the method can be combined with existing large finite element analysis software (such as ANSYS, SAP2000 and the like), and has good universality.

Description

technical field [0001] The invention relates to the technical field of architectural design and structural design, in particular to a form-finding method for a cable-net structure. Background technique [0002] The cable-net structure is a network-like flexible structure composed of steel cables (steel cables 01 and 02) with opposite curvatures in both directions (its structure is as follows: figure 1 shown). The cable net structure has the advantages of light weight, good spanning ability and rapid construction, so it is widely used in stadium roofs, curtain wall structures and other architectural forms. [0003] The geometric topology of the cable-net structure belongs to the mechanism, and it must rely on prestress to maintain stability and thus have a certain bearing capacity. Defining the shape of the structure and the corresponding prestressing (form-finding-force-finding) has become one of the key tasks in the design and research of cable-net structures. At present...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06F30/23G06F119/14
CPCG06F30/13G06F30/23G06F2119/14
Inventor 王玮朱忠义白光波孙寅建孙桐海张琳王哲陈一梁宸宇王毅邢珏蕙卜龙瑰邓旭洋闫晓京
Owner BEIJING INST OF ARCHITECTURAL DESIGN
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