The current arrangement method of manual iterative adjustment of nuclear safety-related piping supports occupies a large proportion of the design cycle of nuclear power plants,and cannot achieve the op-timal selection of support quantity and position,making it difficult to balance economic cost and mechanical performance.Therefore,by utilizing finite element analysis and the non-dominated sorting genetic algo-rithm Ⅱ(NSGA-Ⅱ),a support intelligent optimization layout method for multi mechanical objective per-formance of three-dimensional nuclear power pipelines was proposed.Two typical examples of nuclear safety-related piping supports design demonstrate:this intelligent layout method has good effects,which can effectively improve design efficiency and reduce labor intensity;it not only makes the maximum stress of the pipeline less than the limit value specified in the RCC-M"Design and Construction Rules for Me-chanical Equipment of Pressurized Water Reactor Nuclear Islands",but also has a certain margin;it can quickly analyze the influence of the number of supports and obtain the optimal solution that balances econ-omy and safety.The proposed method may provide a new approach for the layout of supports in nuclear power piping systems.
关键词
核级管路/支架布置/多力学目标优化/非支配排序遗传算法
Key words
nuclear safety-related piping/layout of supports and hangers/multi mechanical objective opti-mization/NSGA-Ⅱ
维普
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