Hits:

Date of Publication:2017-01-01

Journal:水利学报

Volume:48

Issue:7

Page Number:866-873

ISSN No.:0559-9350

Abstract:MSA is a fragility analysis method which is recently proposed and in view of discrete intensity factor,provides an effective approach for structural safety evaluation.However,this method is less applied in the field of earth-rockfill dams engineering.In this paper,crest settlement ratio is selected as the performance evaluation index in view of HCRFD,the seismic subsidence damage of HCRFDs was suggested dividing in mild,moderate and severe damage three standards.Considering the uncertainty of earthquake,fragility analysis is carried out with MSA,and the fragility curves and probability corresponding different damage grades are acquired,which can provide criterion and reference for the dam evaluation under the strong earthquake.In addition,seismic fragility analysis results of different stripe numbers show that decreasing the number of horizontal stripe appropriately has little influence on the result of fragility,thus it is conducive to the reduction of calculation conditions.

Note:新增回溯数据