SEISMOLOGY AND GEOLOGY ›› 1992, Vol. 14 ›› Issue (3): 279-285.

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SURFACE RUPTURE HAZARD ANALYSIS OF A SITE

Yu Ketao, Jiang Pu, Luo Huanyan   

  1. Institute of Geology, State Scismological Bureau, Beijing 100029
  • Received:1990-06-30 Online:1992-09-09 Published:2009-11-25

场地破裂危险性分析

于克涛, 蒋溥, 罗焕炎   

  1. 国家地震局地质研究所 北京 100029

Abstract: Fault rupture is a main type of earthquake-induced geological hazards in the region where faults are developed.Generally speaking,the damage to structures caused by surface rupture is difficultly to withstood.Therefore,Rupture hazard analysis becomes a more important subject in earthquake microzonation.Based on the principles of seismic risk analysis,the paper presents a rupture hazard analysis model for a site with the at-enuation of displacement taken into account Finally,taking the Xianshuihe fault as an texample,we make an estimation of the rupture hazard of a certain site.

Key words: Fault rupure hazard, Attenuation of displacement, Site, Potential seismic source

摘要: 地表破裂是断裂发育地区主要的地震地质灾害。断层错动、地表破裂对结构物的破坏不是一般的抗震措施所能抵御的。因而地表破裂危险性分析日益引起工程设计人员的重视。利用地震危险性分析的原理,建立了考虑位错衰减的场地破裂危险性分析模型。利用该模型,可以了解场地在未来的有效时间内最大位错超过给定值的可能性。最后,以鲜水河断裂为例,评价了某场地的破裂危险性。

关键词: 断层破裂危险性, 位错衰减, 场地, 潜在震源段