A wind-resistant design method for cable-membrane structures based on strong coupling integral technology

Abstract

The invention relates to a wind-resistant design method of a cable-membrane structure based on strong coupling overall technology, which establishes the initial form of the cable-membrane structure; establishes the control equation of the fluid-solid coupling system and the coupling conditions at the fluid-solid interface, and performs time-space discretization on it, Obtain the strong coupling overall equation of the fluid-solid coupling system; use the SST K‑ω turbulence model to simulate turbulence, obtain the strong coupling overall equation of the fluid-solid coupling system considering the turbulence model, and use the Newton method to linearize it; after constructing the linearized The preprocessor of the strong coupling global equation matrix, obtains the strong coupling global equation of the fluid-solid coupling system with the preprocessor, uses the Krylov subspace projection method to solve it, and obtains the strong coupling global equation fluid pressure, fluid velocity, The displacement of the cable-membrane structure and the displacement of the linear elastic finite element model; thus, the wind-resistant design of the cable-membrane structure is carried out, and the wind-resistant design parameters are obtained.

Description

technical field [0001] The invention belongs to the field of wind resistance analysis and design of a cable-membrane structure in the construction industry, in particular to a wind resistance design method of a cable-membrane structure based on a strong coupling integral technology. Background technique [0002] At present, the wind-resistant design theory of cable-membrane structures at home and abroad is still immature. The fluid-structure interaction between the wind and the cable-membrane structure is a difficult problem in the wind-resistant design of the cable-membrane structure. The lag in the study of the fluid-structure interaction has become the main factor restricting the perfection and development of the wind vibration theory of the cable-membrane structure. Academician Shen Shizhao also pointed out that for the wind resistance design of the cable-membrane structure, the focus is to solve the fluid-structure coupling problem between the wind and the cable-membran...

AI Technical Summary

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 and poor accuracy, which brings safety hazards to the wind-resistant design of the cable-membrane structure. The present invention proposes a A wind-resistant design method for cable-membrane structures based on strong-coupling integral technology

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