复杂载荷下核级管路支架的多力学目标优化布置

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 optimal 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 11 (NSGA-11), a support intelligent optimization layout method for multi mechanical objective Performance 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 Mechanical 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.