Strong-coupled overall technology-based wind-resistant design method of cable-membrane structure

A design method and strong coupling technology, applied in calculation, special data processing applications, instruments, etc., can solve problems such as easy divergence, poor accuracy, and safety hazards of cable-membrane structure wind-resistant design in partitioned numerical simulation technology, and improve calculation accuracy performance, improved calculation accuracy, and improved calculation stability

Active Publication Date: 2015-04-29
LIAONING TECHNICAL UNIVERSITY
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Problems solved by technology

[0009] Aiming at the deficiencies of the existing technology, the partition numerical simulation technology of the fluid-solid coupling analysis in the wind-resistant design of the cable-membrane structure has the disadvantages of easy divergence

Method used

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  • Strong-coupled overall technology-based wind-resistant design method of cable-membrane structure
  • Strong-coupled overall technology-based wind-resistant design method of cable-membrane structure
  • Strong-coupled overall technology-based wind-resistant design method of cable-membrane structure

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Embodiment Construction

[0037] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] A wind-resistant design method for cable-membrane structures based on strong coupling overall technology, such as figure 1 shown, including the following steps:

[0039] Step 1: According to the physical properties of the actual membrane structure material and the initial prestress of the actual membrane structure, the initial shape of the cable-membrane structure is established by using the method of small Young's modulus stepwise stiffness approximation.

[0040] In this embodiment, determining the initial shape of the cable-membrane structure belongs to the problem of determining the shape of the given prestress distribution, that is, the initial prestress of the actual cable-membrane structure is known, and the initial geometric state of the membrane is obtained by form-finding. The form-finding method using the Young's modulus...

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Abstract

The invention relates to a strong-couple overall technology-based wind-resistant design method of a cable-membrane structure. The strong-couple overall technology-based wind-resistant design method includes establishing an initial form of the cable-membrane structure; establishing and subjecting a fluid-structure interaction system control equation and a coupling condition on a fluid-structure interface to space-time dispersing, and a strong-coupled overall equation of the fluid-structure interaction system is obtained; employing an SSTK-Omega turbulence model to simulate turbulence to obtain a strong-coupled overall equation matrix with the turbulence model considered of the fluid-structure interaction system, and subjecting the strong-coupled overall equation matrix to linearization in the Newton way; building a preprocessor of the strong-coupled overall equation matrix linearized to obtain a strong-coupled overall equation with the preprocessor of the fluid-structure interaction system, and employing the Krylov subspace projection method to solve the strong-coupled overall equation with the preprocessor so as to obtain strong-coupled overall equation fluid pressure and speed, cable-membrane structure displacement and displacement of linear elastic finite element model; the wind-resistant design of the cable-membrane structure is performed to obtain wind-resistant design parameters.

Description

technical field [0001] The invention belongs to the field of wind-resistant analysis and design of cable-membrane structures in the construction industry, and in particular relates to a method for wind-resistant design of cable-membrane structures based on strong coupling integral technology. Background technique [0002] At present, the wind-resistant design theory of cable-membrane structures is not mature at home and abroad. The fluid-solid coupling of wind and cable-membrane structures is a difficult problem in the wind-resistant design of cable-membrane structures. The lag in the study of fluid-solid coupling has become the main factor restricting the improvement and development of the wind-vibration theory of cable-membrane structures. Academician Shen Shizhao also pointed out that for the wind-resistant design of cable-membrane structures, the key point is to solve the problem of fluid-solid coupling between wind and cable-membrane structures. Therefore, using a reas...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 孙芳锦梁爽张大明冯旭张辉詹宇楠王岩露张尚祥余磊
Owner LIAONING TECHNICAL UNIVERSITY
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