北华大学学报(自然科学版)
北華大學學報(自然科學版)
북화대학학보(자연과학판)
JOURNAL OF BEIHUA UNIVERSITY(NATURAL SCIENCE)
2014年
6期
833-837
,共5页
供水管网%节点流量%低压水力分析%功能可靠性分析
供水管網%節點流量%低壓水力分析%功能可靠性分析
공수관망%절점류량%저압수력분석%공능가고성분석
water supply system%node traffic%low pressure hydraulic analysis%performance reliability
考虑节点流量随节点水压的动态变化,构建地震导致渗漏的供水管网水力模型,基于EPANET计算管网节点实际流量和水压,在此基础上结合一次二阶矩方法,得到震后低压供水时管网系统的功能可靠性指标。结合实例分析预测震后管网供水能力,并进行了震后低压供水时管网功能可靠性分析,研究结果可为城市供水管网抗震防灾管理提供借鉴。
攷慮節點流量隨節點水壓的動態變化,構建地震導緻滲漏的供水管網水力模型,基于EPANET計算管網節點實際流量和水壓,在此基礎上結閤一次二階矩方法,得到震後低壓供水時管網繫統的功能可靠性指標。結閤實例分析預測震後管網供水能力,併進行瞭震後低壓供水時管網功能可靠性分析,研究結果可為城市供水管網抗震防災管理提供藉鑒。
고필절점류량수절점수압적동태변화,구건지진도치삼루적공수관망수력모형,기우EPANET계산관망절점실제류량화수압,재차기출상결합일차이계구방법,득도진후저압공수시관망계통적공능가고성지표。결합실례분석예측진후관망공수능력,병진행료진후저압공수시관망공능가고성분석,연구결과가위성시공수관망항진방재관리제공차감。
The dynamical change of the node flow is considered with water pressure. Leakage hydraulic model of water supply network is built in a possible earthquake. Combining with EPANET to compute network nodes actual flow and pressure,performance reliability index of low pressure is computed. Based on a second moment method, performance reliability index of water supply pipe network system under low pressure is obtained. In combination with case studies, water supply pipe network capacity is predicted and seismic performance analysis with low pressure hydraulic is gotten, which provides reference for disaster management of urban water supply networks earthquake.