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Title:: Preliminary Study on Post-earthquake Functional Recovery Model of Lifeline Systems

作者:: 钟江荣; 张令心^; (中国地震局工程力学研究所,黑龙江哈尔滨 150080; 中国地震局工程力学研究所地震工程与工程振动重点实验室,黑龙江哈尔滨 150080)

Author(s):: ZHONG Jiangrong; ZHANG Lingxin; (Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,Heilongjiang,China)(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,Heilongjiang,China)

Keywords:: lifeline system; function recovery function; a attenuation index of recovery function; function failure; earthquake loss

摘要:: 针对地震造成的供电、通讯、供水和燃气4类生命线系统破坏的功能恢复开展初步研究。基于日本宫城地震和阪神大地震的这4类生命线系统功能的震后恢复时序调查资料,结合我国生命线系统特点,建立了指数形式的生命线系统震后功能恢复函数,并定义了恢复函数衰减指数A。在总结我国几次地震生命线工程震害特点的基础上,确定了4个系统衰减指数取值区间和原则。最后,将唐山大地震震后供电、通讯和供水3个系统和汶川地震震后绵阳市供气系统的实际恢复时间与由功能恢复函数计算所得时间进行对比,结果表明2组数据符合度较高,验证了所建立的生命线功能恢复函数的有效性,且A是可反映各生命线系统重要程度、修复难易程度及震后应急决策修复措施有效性的综合变量。

Abstract:: A preliminary study on the function restoration of lifeline systems including electricity,communication,water and gas was made after earthquake in this paper.Considering the lack of investigation datum on the function recovery of the lifelines with the time in China,an exponential form of the post-earthquake function recovery function which combined with the characteristics of the lifelines system itself was established based on the survey datum on the function recovery of the four lifelines system(the power supply,communication,water supply and gas supply)in the Miyagi earthquake and the Great Hanshin earthquake occurred in Japan.A function recovery attenuation index that reflects the important degree of the lifeline system,the degree of difficulty in repairing and the effectiveness of the post-earthquake emergency decision repair measures was defined in the function.The value interval and selecting principle of the attenuation index of four systems were preliminarily limited on the basis of summarizing the earthquake damage characteristics of lifeline systems in China.In addition,the actual recovery time of power supply,communication,water supply after the Tangshan earthquake and gas supply in the Mianyang city after the Wenchuan earthquake was compared with calculation of the function recovery function.The two groups of data were in good agreement,indicating the lifeline recovery function that developed in this study is effective.