基于物理的城市供水管网整体抗震功能可靠度分析

项目名称： 基于物理的城市供水管网整体抗震功能可靠度分析

项目编号： No.51278380

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 建筑科学

项目作者： 刘威

作者单位： 同济大学

项目金额： 80万元

中文摘要： 作为城市生命线工程系统的重要组成部分，供水管网系统对地震后抢险救灾和社会稳定具有重要的意义。本项目拟沿着地震动随机场生成、管网整体建模和分析、城市供水管网抗震功能可靠性分析的研究思路进行地震作用下供水管网性能的精细化分析和抗震功能准确评价。拟在以下方面做深入研究：1.研究基于物理的相关地震动随机场生成方法；2.考虑管网、边界条件以及管-土相互作用，建立符合工程实际的复杂管网整体力学分析模型，实现地震下管网整体精细化分析；3.进行人工爆炸模拟地震波作用下埋地管网现场试验，验证管网整体分析方法；4.利用概率密度演化方法，发展基于物理的供水管网整体抗震功能可靠度评价方法；5.利用都江堰市供水管网震后调查结果进行实例验证。

中文关键词： 管网整体分析；人工地震；概率密度演化算法；供水管网；功能可靠度

英文摘要： As an important component of lifeline systems, water distribution network (WDN) is essential for rescue and society stability after earthquake. In this project, along the stochastic related ground motion field generation, whole WDN modeling and analyzing, and seismic functional reliability analysis of WDN, the following topics will be investigated in detail. 1. The physically-based stochastic related ground motion field is generated; 2. Considering pipeline connection, boundary and interaction between pipeline and soil, a whole model of complex network is established. Moreover, a precise analysis is performed for the whole WDN under earthquake; 3. A field test of WDN subject to the wave induced by explosion is performed to validate the analysis method of the whole WDN under earthquake; 4. A probability density evaluation method is employed to give the seismic functional reliability of the WDN under earthquake; 5. The post-disaster state of the WDN located at Dujiangyan City is used to validate the physically-based seismic functional reliability analysis method of the whole WDN.

英文关键词： Analysis of entire pipe network；Artificial earthquake；Probability density evolution method；Water distribution networks；Functional reliability