基于微粒群算法的供水管网抗震优化设计

以管网年费用折算值为优化目标、管网拓扑结构与管径为优化参数、管网节点最低可靠度为约束条件,建立了供水管网抗震优化设计模型。利用微粒群算法对这一模型进行了求解,该算法以管网作为微粒个体,通过不断地更新微粒的位置来搜索最优的管网结构,直到最后给出优化的管网结构。利用上述方法对一典型供水管网进行了抗震优化设计分析,给出了3种不同节点最低可靠度约束条件下的优化改造方案。

Seismic Reliability Optimization of Water Distribution Network with Particle Swarm Algorithm

As an essential component of lifeline systems,water distribution networks play an important role in modern city.Taking network′s annual reduced cost as optimization object and seismic reliability as optimization restriction,a network topology and pipe diameter optimization model is established.The particle swarm algorithm,which takes network as particle and updates the particle's location to give the optimal network structure,is chosen to solve the optimization problem.Also,a typical water distribution network,which consists of 29 nodes and 47 pipelines,is investigated.Three different network structures are given respectively under three different reliability restrictions.The results show that the approach put forward in this paper are qualified for water distribution networks optimization.