给定地震烈度下供水系统受灾程度分析

DISASTER DEGREE ANALYSIS OF WATER SUPPLY SYSTEM UNDER DETERMINISTIC SEISMIC INTENSITY

本文提出了供水系统在给定地震烈度下受灾程度的一种分析方法。给出了地震后生命线工程系统受灾程度的一个定义。文中利用不同地震烈度下地下管道的统计震害率,并通过经验判断,确定各供水节点之间管道破坏的数量.根据震后各地下管段接头或管体本身对三种不同破坏状态的隶属度,判断管道破坏的位置和破坏的状态。在进行供水系统流量分析的基础上,给出各供水节点的服务状态。最后根据系统受灾程度的定义,计算供水系统的受灾程度。本文既利用了震害统计资料,又综合应用了理论分析得到的对三种不同破坏状态的隶属度。较科学地给出了供水系统地震后受灾程度的分析方法。同时还给出了生命线工程抗震设计准则.

In this paper,a disaster degree analysis method of water supply system under deterministic seismicintensity action is proposed.A definition of seismic disaster degree of lifeline engineering systems is giv-en.The damage number of buride pipelines between two water supply nodes is determined by statisticdamage rate of buried pipeline in history earthquakes.The damage locations and damage state ofpipelines are indicated by the membership grades of three damage states.Based on flow analysis of awater supply system,the serviceable state of each water supply node is presented.At last,the formulato calculate disaster degree of water supply system is given.