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Design method of large-curvature cable-membrane structure

A design method, a technology of large curvature, applied in design optimization/simulation, using stable tension/pressure test material strength, instruments, etc., can solve the problems of cable-membrane structure temperature performance influence, change of body size, plastic deformation, etc. Achieve the effect of improving the overall stress stability, speeding up the construction speed, and reasonable stress

Active Publication Date: 2021-10-01
CHINA RAILWAY CONSTR ENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the cable-membrane structure is easily affected by temperature performance. Under the action of wind and snow loads, the large-area membrane structure is prone to stress concentration and plastic deformation at the edge of the structure, or changes in size or relaxation due to large deformation due to temperature changes.
The analysis and design theory of cable-membrane structures at home and abroad is not yet fully mature. Therefore, to explore suitable design methods for large-curvature cable-membrane structures, carry out special design and processing according to special building shapes, and carry out targeted optimization and improvement in actual construction. It is also the need to promote the popularization and application of large-span and large-area cable-membrane structures

Method used

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  • Design method of large-curvature cable-membrane structure
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A design method for a large-curvature cable-membrane structure, comprising the following steps:

[0030] (1) Perform performance analysis on the membrane materials to be used in the large-curvature cable-membrane structure to determine the membrane materials to be used; performance analysis includes membrane tensile performance analysis and membrane creep performance analysis;

[0031] (2) Use ANSYS software to conduct form-finding analysis on the large-curvature cable-membrane structure, and select the SHELL41 unit to simulate the membrane material in the cable-membrane structure;

[0032] (3) By analyzing the stress of membrane materials with different thicknesses under the action of wind load, select membrane materials with appropriate thickness;

[0033] (4) Optimizing the reinforcement cable net in the large-curvature cable-membrane structure; specifically including determining the structural system, selection and optimization of the cable net layout scheme, and se...

Embodiment 2

[0046] A design method for a large-curvature cable-membrane structure, comprising the following steps:

[0047] (1) Perform performance analysis on the membrane materials to be used in the large-curvature cable-membrane structure to determine the membrane materials to be used; performance analysis includes membrane tensile performance analysis and membrane creep performance analysis;

[0048] (2) Use ANSYS software to conduct form-finding analysis on the large-curvature cable-membrane structure, and select the SHELL41 unit to simulate the membrane material in the cable-membrane structure;

[0049] (3) By analyzing the stress of membrane materials with different thicknesses under the action of wind load, select membrane materials with appropriate thickness;

[0050] (4) Optimizing the reinforcement cable net in the large-curvature cable-membrane structure; specifically including the determination of the structural system, selection and optimization of the cable net layout schem...

Embodiment 3

[0063] A design method for a large-curvature cable-membrane structure, comprising the following steps:

[0064] (1) Perform performance analysis on the membrane materials to be used in the large-curvature cable-membrane structure to determine the membrane materials to be used; performance analysis includes membrane tensile performance analysis and membrane creep performance analysis;

[0065] (2) Use ANSYS software to conduct form-finding analysis on the large-curvature cable-membrane structure, and select the SHELL41 unit to simulate the membrane material in the cable-membrane structure;

[0066] (3) By analyzing the stress of membrane materials with different thicknesses under the action of wind load, select membrane materials with appropriate thickness;

[0067] (4) Optimizing the reinforcement cable net in the large-curvature cable-membrane structure; specifically including the determination of the structural system, selection and optimization of the cable net layout scheme,...

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Abstract

The invention discloses a design method of a large-curvature cable-membrane structure, and aims to solve the technical problems that the existing cable-membrane structure is easy to generate larger deformation to change the shape size or loosen, and the analysis and design theory of the cable-membrane structure at home and abroad is not completely mature. The design method comprises the following steps: (1) carrying out performance analysis on a membrane material to be used by the large-curvature cable membrane structure; (2) adopting ANSYS software to carry out shape finding analysis on the large-curvature cable membrane structure; (3) selecting a membrane material with a proper thickness; (4) optimizing a reinforcing cable net in the large-curvature cable membrane structure; (5) carrying out technical verification and hardware optimization on the large-curvature cable membrane structure; and (6) designing proper light transmittance of the membrane material. According to the design method, a collaborative stress system of the steel cable, the membrane material, the hardware and the cable membrane support steel structure is optimized, the overall stress stability of the structure and the applicability of the component are improved on the premise that the material performance is brought into full play, and the building body art is perfectly expressed.

Description

technical field [0001] The invention relates to the technical field of cable-membrane structure design for construction engineering, in particular to a design method for a large-curvature cable-membrane structure. Background technique [0002] With the continuous development of society, people's demand for public activity spaces such as large exhibition halls, stadiums, airports, railway stations, etc. is increasing day by day; at the same time, as people's aesthetic level continues to improve, the requirements for the beauty and lightness of buildings are also increasing Continuously increasing; the cable-membrane structure is becoming more and more popular with the public for its rich colors, light structural form, and beautiful shape. These phenomena have greatly promoted the continuous innovation of cable-membrane structures. Not only innovations in terms of safety and economy, but more importantly, innovations in styling to meet people's constantly updated aesthetic ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/23G01N3/08G06F119/14
CPCG06F30/23G06F30/13G01N3/08G01N2203/0003G01N2203/0017G06F2119/14
Inventor 石冬钟世原沈龙飞曹晓凯张磊李铁东万文涛魏文龙
Owner CHINA RAILWAY CONSTR ENG GROUP
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