921台湾集集地震的烈度等震线  

The isoseismal of seismic intensity for the 9.21 Taiwan Chi-Chi earthquake of 1999

作　　者：郝敏[1] 谢礼立[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《哈尔滨工业大学学报》2007年第2期169-172,共4页Journal of Harbin Institute of Technology

基　　金：教育部高等学校博士学科点专项科研基金资助项目(20030213042);黑龙江省自然科学基金重点资助项目(ZJG03-03)

摘　　要：根据收集到的9.21台湾集集大地震南投县、台中县、台北县和苗栗县的建筑物震害资料绘制了烈度等震线图,并与同一地震中记录到的地震动加速度峰值等值线图做了比较.对比结果显示二者在形状和覆盖范围上吻合的较好,从一个侧面印证了本文提出的基于宏观震害的烈度等震线图是正确的、合理的.由于这次地震中受害的主要是单层的土坯、砖石脆性结构,以及不高于7层的钢筋混凝土结构,两张等震线图的相符也大致说明地震动峰值加速度是导致脆性结构破坏的主要因素,它能够在一定程度上体现地震动对这类结构的潜在破坏势.The isoseismal of seismic intensity is plotted based on the seismic damage to buildings county,Taichung county ,Taipei county and Miaoli county for the 9.21 Taiwan Chi - Chi Earthquak in Nantou e of 1999. A comparative study is conducted between the isoseismal of seismic intensity and the isoseismal of PGA recor- ded during this earthquake. It is shown that these two isoseismals are basically in conformity with each other and verifies that the isoseismal based on damages to buildings presented in this paper is reasonable. Since most of the damaged structures during this earthquake are single storey adobe and brick structures and reinforcement concrete structures of 7 storeys or lower, the match of these two isoseismals roughly indicates that PGA is the main factor resulting in damage to brittle structure, which can reflect the brittle structures to some degree. damage potential of ground motion to brittle structures to some degree.

关 键 词：震害 烈度等震线 峰值加速度 地震动潜在破坏势 

分 类 号：P315.9[天文地球—地震学]