摘要
汶川地震与唐山地震几乎将当地生命线系统完全损毁。以评价在近场地震作用下的城镇生命线系统的"稳健性"为研究目标,采用地震灾害比较学中拓扑学原理,计算两地公路网络相关评价参数并进行分析。参数包括拓扑指数(TI(G))、拓扑逆指数(TII(G))和节点孤立指数(NSI)等。研究得出公路网络"稳健性"唐山震后(2008年)最优,汶川(2007年)次之,唐山震前(1975年)最低的结论。从纯数学角度引入最优化理论,认为在复建原有公路前提下加修北川到安县等五条公路,区域分散性最高,且节点孤立指数最小,这时的公路网络易损性最低。
In Wenchuan earthquake and Tangshan earthquake the local lifeline systems were almost totally damaged.To evaluate the ＂stability＂ of the local lifeline systems under the condition of near field earthquake,the evaluation parameters of the two road nets are calculated and analyzed based on the theory of earthquake disaster comparatology.Those parameters are Topological Index（TI（G））,Topological Inverse Index（TII（G）） and Node Solitude Index（NSI） etc.The result shows that the ＂Stabilities＂ from low to high are Tangshan Before-earthquake （1975）, Wenchuan Before-earthquake （2007）, Tangshan After-earthquake （2008）. It is concluded that five additional roads, Beichuan to Anxian and so on, should be built in case of rehabilitation the existing roads before Wenchuan earthquake with the optimization theory from a purely mathematical point of view, in which the local road nets would be the highest regional dispersion, the smallest node isolation index, and would be most stability.
出处
《西北地震学报》
CSCD
北大核心
2009年第3期221-226,共6页
Northwestern Seismological Journal
基金
四川省杰出青年学科带头人培养计划项目(06ZQ026-014)
四川省教育厅自然科学重点项目(2006A116)
关键词
拓扑学
生命线系统
公路网络
汶川地震
唐山地震
稳定性
Topology
Lifeline systems
Road net
Wenchuan earthquake
Tangshan earthquake
Stability
作者简介
张东辉（1985-），男（汉族），山西平陆县，硕士研究生，主要从事地震遥感监测及3S综合应用技术．
