岩土力学2012，Vol.33Issue(5)：1479-1484,6.
基于变形的土石坝地震风险分析
Seismic risk analysis of earth-rock dam based on deformation
摘要
Abstract
The seismic safety design of an earth-rock dam usually focuses on how to prevent its structure from collapsing, which makes the issue about how to control the structural damage of an earth-rock dam within an acceptable risk level, an important topic worth researching in the field of geotechnical engineering. By applying the theory of seismic risk analysis to practice, this paper witnesses the establishment of a method of seismic risk analysis particularly designed for earth-rock dams. The method explores the seismic risk from three aspects: the seismic hazard analysis, the seismic fragility analysis and the seismic loss assessment. On the basis of the site seismic risk analysis, the ideology of performance-based seismic design is successfully realized in the seismic fragility analysis of an earth-rock dam. The seismic damage level for an earth-rock dam is classified according to the specific condition of the relative settlement of the dam crest which serves as an evaluation index. Finally, with the help of seismic economic losses analysis, a seismic risk model for earth-rock dams is established, which can be used for evaluating the seismic damage risk of an earth-rock dam in terms of technology and economy. This paper also takes a high earth-rock dam for example to analyze and predict its seismic damages and economic losses in an earthquake, using the proposed model. The conclusion of such analysis and prediction can provide a valuable reference for safety evaluations of earth-rock dams and investment decisions, especially when an earth-rock dam is located in an area endangered by possible earthquakes.关键词
土石坝/变形/基于性能的抗震设计/地震易损性/风险分析Key words
earth-rock dam/ deformation/ performance-based seismic design/ seismic fragility/ risk analysis分类
建筑与水利引用本文复制引用
王笃波,刘汉龙,于陶..基于变形的土石坝地震风险分析[J].岩土力学,2012,33(5):1479-1484,6.基金项目
国家杰出青年科学基金(No.50825901) （No.50825901）
水利部公益性行业专项经费项目(No.200801014) （No.200801014）
河南省教育厅自然科学研究计划项目(No.2010A570004). （No.2010A570004）
