A method and system for quality optimization of cable-strut tension structures based on genetic algorithm
A technology of tension structure and genetic algorithm, applied in genetic rules, design optimization/simulation, gene model, etc., can solve problems such as inability to comprehensively evaluate structural stability
Active Publication Date: 2020-02-21
WENZHOU UNIV
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[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method and system for optimizing the quality of cable-strut tension structures based on genetic algorithms. Compared with the initial structural model, the robust performance of the optimized structure will not weaken the structural model, thus solving the technical problem in the prior art that the section optimization of the cable-strut tension structure is only based on the lightest structure weight and cannot comprehensively evaluate the structural stability
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[0066] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0067] Due to the high geometric nonlinearity of the cable-strut tension structure, its structural properties will continue to change with different input variables. Compared with the linear structure, the functional relationship between the output variable and the input variable is not explicit. In the specific optimization analysis, the zero-order and first-order optimization algorithms are mo...
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The present invention provides a method and system for optimizing the quality of cable-strut tension structures based on genetic algorithms. The genetic algorithm is used to optimize the analysis and design of cable-strut tension structures, including: (1) data preprocessing; The cross-sectional area of the rod-like member is the optimization variable, and the minimum structural mass is the optimization target. The genetic algorithm is used for optimization calculation. The calculation constraint conditions are: the robustness of the structure is better than or equivalent to the robustness of the cable-strut tension structure to be optimized. Rodness, so as to search in the global scope, so that all kinds of members of the structure can seek the section arrangement that minimizes the total mass of the structure within the existing area control range, and at the same time ensure that the robust performance of the optimized structure is better than that of the initial structural model. Weaken, so as to ensure the ability of the structure to resist disproportionate damage, making the structure insensitive to interference; on the premise of ensuring the safety of the structure, reduce the manufacturing cost within a reasonable range.
Description
technical field [0001] The invention belongs to the field of civil engineering, and more specifically relates to a method and system for optimizing the quality of a cable-strut tension structure based on a genetic algorithm. Background technique [0002] The cable-strut tension structure is a kind of flexible space structure that is formed by tensioning and has a self-balancing prestressing system, which is composed of cables and compression rods as the basic units. Due to the high strength of the cables and the adjustment of the structural prestress distribution Then optimize the structure stiffness distribution, so that the structure has many advantages such as large span, light structure, beautiful shape, excellent economic performance, etc., and has been widely used in practical engineering. [0003] At present, the large-span spatial structure already has relatively mature design methods. However, with the progress of society and economic development, the large-span spa...
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IPC IPC(8): G06F30/20G06F119/14G06N3/12
CPCG06N3/126G06F2119/06G06F30/20
Inventor 陈联盟章禾高伟冯姜智超刘毅杰周一一张福勃
Owner WENZHOU UNIV