论文部分内容阅读
供水管网抗震优化设计模型以用户节点的抗震安全能力为设计目标,包含管网拓扑布局及管段结构抗震能力两个设计参数,寻找最优设计参数是离散变量组合优化问题.提出了一种基于两阶段搜索空间缩减策略的管网抗震优化设计模型求解方法,第一阶段利用度约束连通图生成初始种群,缩小优化初始搜索空间;第二阶段采用违约个体修补策略转换优化进行过程中不满足约束条件个体所处的搜索空间,实现了优化过程中搜索空间的动态缩减,提高了优化搜索的效率.此方法在供水管网抗震优化设计中有较高的效率,也可为其他有约束离散变量优化问题提供参考.
The seismic optimal design model of water supply pipe network is designed with the seismic capacity of the user node as the design objective, including the two topologies of pipe network topology and the seismic capacity of the pipe structure, and the optimal design parameters are combinatorial optimization of discrete variables. In the first stage, the initial population is generated by using the degree-constrained connectivity diagram to reduce the optimal initial search space. In the second stage, the default-individual patching strategy is used to optimize the process of the optimization and is not satisfied with the constraints The search space of the conditional individuals achieves the dynamic reduction of the search space in the optimization process and improves the efficiency of the optimized search.This method has high efficiency in the seismic design optimization of water supply network and can also be used for other constrained discrete variables Optimization problems provide a reference.