摘要
本文提出了一个基于压力驱动节点配水量模型的供水管网震后供水能力评价方法.采用Monte Carlo模拟分析得到管网震后供水满足率均值,作为管网震后供水能力评价结果;在单次模拟分析中采用随机抽样方法确定管道地震破坏状态,并形成管网震后水力模型,基于压力驱动节点配水量模型进行管网震后水力平差计算.在案例分析中,分别应用本文方法与美国Cornell大学开发的供水管网震后水力功能分析软件GIRAFFE评价某城市供水管网在不同地震烈度作用下的供水能力.结果表明,本文方法分析结果与GIRAFFE分析结果的变化规律一致,相同模拟收敛条件下本文方法所需Monte Carlo模拟运行次数少于GIRAFFE软件,本文方法进行单次Monte Carlo模拟的计算时间少于GIRAFFE软件;在基于压力驱动节点配水量模型的管网震后水力分析模型中,管道破坏造成的漏水量会同时降低该管道上游和下游节点供水满足率,与管网震害实际情况相符.
This study develops a simulation method of water supply network against earthquakes based on pressure drive demand model.For this purpose,Monte Carlo method is used for the probabilistic seismic simulations and the mean system serviceability is obtained as the final analysis result.In each simulation,a post-earthquake water supply network hydraulic model comes into being as a result of random selection of pipelines status,then the system serviceability is calculated through hydraulic analysis based on pressure drive demand model.In case analysis,we use the developed method and GIARFFE software developed by professor O’Rourke from Cornell University to analyze an urban water supply network performance under different earthquake intensities.The results show that:the results between the developed method and GIRAFFE have the same trends,the developed method needs less number of Monte Carlo simulation than GIRAFFE,and less operation time than the GIRAFFE in a single simulation;a damaged pipeline reduces both of upstream and downstream nodes serviceability in the analysis based on pressure drive demand model.
作者
韩朝
马东辉
侯本伟
王威
HAN Zhao;MA DongHui;HOU Ben Wei;WANG Wei(College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;Institute of Earthquake Resistance and Disaster Reduction,Beijing University of Technology, Beijing 100124,China;College of Architecture and Urban Planning,Beijing University of Technology, Beijing 100124,China)
出处
《中国科学：技术科学》
EI
CSCD
北大核心
2019年第3期351-362,共12页
Scientia Sinica(Technologica)
基金
国家自然科学基金(批准号:51508528
51678017)
国家科技支撑计划(批准号:2015BAK14B01)资助项目
