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首页> 外文期刊>Bulletin of earthquake engineering >Evaluating seismic risk in small and medium-sized cities with the modified vulnerability index method, a case study in Jiangyou City, China
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Evaluating seismic risk in small and medium-sized cities with the modified vulnerability index method, a case study in Jiangyou City, China

机译：利用改进的脆弱性指数法评估中小城市地震风险，是江宇市江源市的案例研究

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摘要

The rapid urbanization of China generated not only dozens of megacities but also a great number of surrounding small and medium-sized cities. The utter lack of seismic risk assessments for small and medium-sized cities is emerging as a potential threat. A seismic risk evaluation of a medium-sized city, Jiangyou, is presented with the modified vulnerability index method (VIM), based on the investigation of 6369 buildings for a scenario corresponding to the destructive historical earthquake of May 12, 2008 (M-W 7.9). The population-time-land (PTL) model is used to estimate the human deaths (M-D) and resettlement population (M-R). The direct economic loss from physical damage to buildings is calculated. The results show that the modified VIM not only can indicate that the distributions of building seismic vulnerability and direct economic loss are closely related with city plans, but reflect the seismic performance characteristics of buildings and the huge differences in seismic consequences under different time scenarios. Evaluating seismic risk in small and medium-sized cities will support accurate and comprehensive seismic risk mitigation strategies setting in similar rapid urbanization areas under earthquake threats.
机译：中国的快速城市化不仅产生了几十个巨大的巨型城市，而且产生了大量周围的中小城市。对中小型城市的完全缺乏地震风险评估是潜在的威胁。基于5008年5月12日的破坏性历史地震（MW 7.9）的情况，提出了改进的漏洞指数法（VIM）的改良漏洞指数方法（VIM）的地震风险评估。 。人口 - 时 - 土地（PTL）模型用于估计人死亡（M-D）和移民安置人口（M-R）。计算了建筑物对物质损坏的直接经济损失。结果表明，改进的VIM不仅可以表明建筑地震脆弱性和直接经济损失的分布与城市计划密切相关，但反映了建筑物的地震性能特征以及不同时间场景下地震后果的巨大差异。评估中小型城市的地震风险将支持地震威胁中类似的快速城市化地区的准确和综合地震风险缓解策略。

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