考虑阀门布局的供水管网抗震服务性评估与关键管道识别  

Seismic Serviceability Assessment and Key Pipeline Identification of Water Supply Networks Considering Valve Layout

作　　者：贾睿 杜坤[1] 张健[1] 宋志刚[1] JIA Rui;DU Kun;ZHANG Jian;SONG Zhigang(Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500

出　　处：《昆明理工大学学报（自然科学版）》2024年第1期156-164,共9页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(52260011);云南省重点研发计划项目(202203AC100004)。

摘　　要：评估地震后供水管网的服务能力并确定关键管道,对优化维修计划、提高灾害应对能力和提升服务水平至关重要.目前,多数研究未考虑真实阀门布局的影响.鉴于此,本文开展考虑阀门布局的供水管网抗震服务性评估及关键管道识别研究.对给定地震烈度下的供水管网震损场景进行蒙特卡洛模拟,并采用最短路径矩阵算法形成关阀方案;调用EPANET2.2低压水力计算模块实现考虑关阀场景的供水管网抗震性能评估;提出基于条件修复指数的关键管道识别方法,将所提出的算法应用于云南某古城镇供水管网.结果表明:若不考虑阀门布局影响,评估供水管网的服务指数最大偏差超过50%;阀门密度提高2倍,供水管网系统服务指数、节点服务指数均有不同程度的提高,其中系统服务指数提高33%;在用户需水量和管网拓扑结构不变的情况下,关键管道识别结果不受地震烈度变化的影响.Evaluation of post-earthquake serviceability of water supply networks and identification of key pipelines are crucial for optimizing maintenance plans,enhancing disaster response capabilities,and improving service levels.However,most existing research studies have not considered the impact of the actual valve layout.In light of this,this paper investigates the seismic serviceability assessment and key pipeline identification of water supply networks considering valve layout.First,Monte Carlo simulations are conducted to generate seismic damage scenarios for the water supply network under a given seismic intensity,and a shortest path matrix algorithm is employed to formulate valve closure schemes.Then,the EPANET 2.2 hydraulic calculation module is utilized,incorporating the valve closure scenarios,to assess the seismic performance of the water supply network.Finally,a key pipeline identification method based on conditional repair index is proposed.The proposed algorithm is applied to a water supply network in a historical town in Yunnan.The results demonstrate that neglecting the influence of valve layout can lead to a maximum deviation of over 50%in the service index evaluation of the water supply network.Doubling the valve density leads to varying degrees of improvement in the system service index and node service index of the water supply network,with the system service index increasing by 33%.Furthermore,the identification of key pipelines remains unaffected by changes in seismic intensity when the user demand and network topology remain unchanged.

关 键 词：地震 城市供水管网 服务指数 关键管道识别 阀门布置 

分 类 号：TU911.33[建筑科学—建筑理论] TU311.3