改进的VIM模型在建筑物区域地震脆弱性评估中的应用——以玉树地区为例  

Application of the Modified VIM Model in the Assessment of Regional Seismic Vulnerability of Buildings,A Case Study in Yushu,China

作　　者：郑浩 陈宇 郭兰兰 刘吉夫[1,2] 刘连友[1,2] 郑涛 ZHENG Hao;CHEN Yu;GUO Lanlan;LIU Jifu;LIU Lianyou;ZHENG Tao(Key Laboratory of Environmental Change and Natural Disaster of Ministry of Education,Beijing Normal University,Beijing 100875,China;Faculty of Geographical Science,Beijing Normal University,Beijing 100875,China;State Key Laboratory of Earth Surface Processes and Resource Ecology,Beijing Normal University,Beijing 100875,China;Construction and Installation Engineering Branch,China Railway First Bureau Group Co.,Ltd.,Xian 710054,China)

机构地区：[1]北京师范大学环境演变与自然灾害教育部重点实验室,北京100875 [2]北京师范大学地理科学学部,北京100875 [3]北京师范大学地表过程与资源生态国家重点实验室,北京100875 [4]中铁一局集团有限公司建筑安装工程分公司,西安710054

出　　处：《灾害学》2024年第2期106-112,共7页Journal of Catastrophology

基　　金：第二次青藏高原综合科学考察研究项目任务九“综合灾害风险评价与防御”(2019QZKK0906)。

摘　　要：快速和准确地评估建筑区域地震脆弱性,对把握区域尺度的地震风险和城市及周边地区的防震减灾工作具有重要意义。该文利用改进的脆弱性指数模型(VIM),在区域尺度上选取建筑物的修建时期、结构类型、建筑面积、楼层高度和建筑层数等7种属性作为修正指标,对玉树藏族自治州建筑物区域地震脆弱性曲线进行修正。并以2010年4月14日的玉树7.1级地震为情景,对玉树地区建筑物区域地震脆弱性进行评估,并分析其分布规律和影响因素。研究表明,改进的VIM模型可以显著提高玉树地区建筑物区域地震脆弱性的评估结果(13%)。玉树地区建筑物区域地震脆弱性在空间上呈现出以震中结古镇为中心向四周辐射递减,和以甘孜—玉树断裂带为“脊线”向两侧递减的分布规律。Rapid and accurate assessment of regional seismic vulnerability of buildings is of paramount importance for understanding regional-scale earthquake risk and for earthquake preparedness and mitigation efforts in urban and surrounding areas.In this study,the modified Vulnerability Index Model(VIM)is employed at the regional scale,utilizing seven attributes such as construction period,structural type,building area,floor height,and number of stories as adjustment indicators to modify the seismic vulnerability curves for buildings in the Yushu Tibetan Autonomous Prefecture.Using the scenario of the Yushu earthquake that occurred on April 14,2010,the regional seismic vulnerability of buildings in the Yushu region is assessed,and its distribution patterns and influencing factors are analyzed.The research indicates that the modified VIM model can significantly enhance the assessment results of regional seismic vulnerability for buildings in the Yushu region(13%).Spatially,the regional seismic vulnerability of buildings in the Yushu region exhibits a pattern of decreasing radiating outward from the epicenter,centered around the town of Jiegu,and a pattern of decreasing on both sides along the Garze-Yushu fault zone,which serves as the“ridge line”.

关 键 词：建筑物 区域地震脆弱性 脆弱性指数法 地震灾害 

分 类 号：X43[环境科学与工程—灾害防治] X915.5[天文地球—地震学] P315[天文地球—固体地球物理学]