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Date of Publication:2012-01-01

Journal:岩土工程学报

Affiliation of Author(s):建设工程学部

Volume:34

Issue:1

Page Number:139-144

ISSN No.:1000-4548

Abstract:By using the dynamic finite element stability and deformation method,the
   definite methods for the most dangerous sliding surface,the influences
   of seismic duration and depth of sliding surface on slope stability and
   deformation as well as the reinforcement range of dam slopes are
   studied.The results show that by means of the pseudo-static method,the
   slip circle corresponding to the minimum safety factor is deeper and the
   slip range is larger owing to the fact that the acceleration
   distribution coefficient suggested by the Chinese Code does not match
   the seismic response of dams.It is not helpful for determining the
   reinforcement range of dam slopes.During the earthquake history,the
   potential sliding surface varies with the time history,and it should be
   arbitrarily searched by using the dynamic finite element method.The
   potential sliding surface corresponding to the minimum safety factor is
   different from the maximum slippage.The estimation of the stability
   safety of dam slopes should combine the safety factor with the
   deformation.The reinforcement range of dam slopes is suggested according
   to the calculated results.

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