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Date of Publication:2014-01-01

Journal:水利与建筑工程学报

Affiliation of Author(s):建设工程学部

Issue:5

Page Number:1-6,12

ISSN No.:1672-1144

Abstract:The risk analysis for dams is of great significance .The systematic risk analysis method for dams of different failure modes subjected to spatial correlative non-stationary seismic load was put forward .Firstly ,the time histories of the earthquake ground motion with the spatial correlation and non-stationarity characteristics were synthesized and the Mazars damage model was adopted to define damage value and anti-sliding stability coefficient of the dike head ,upstream gradi-ent surface and foundation surface of the gravity dam .Then ,the calculation method for the time of dam burst and the variations of breach flow was derived to analyze life and property loss .At last an example was applied to varify the appli-cability of the damage model .The results indicate that the proposed model can simulate every process of dam risks and roundly describe the integrity of dam risks .

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