A STRENGTH REDUCTION METHOD CONSIDERING TENSILE FAILURE
YUAN Wei，LI Xiaochun，BAI Bing，SHI Lu
(State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，
Chinese Academy of Sciences，Wuhan，Hubei 430071，China)
Abstract：Strength reduction method(SRM) is widely used for calculating the safety factor of the slope. In realistic slope engineering，shear failure is not the only mode in rock masses，the tensile failure may also occur in certain areas，which means that the tensile failure should also be taken into consideration in SRM. In this paper，a strength reduction method considering tensile failure is proposed，indicating that the tensile strength，internal friction angle and cohesion should satisfy an inequality during strength reduction process. Based on this inequality，the drawback of the current SRM considering the tensile failure is pointed out. At last，the validity of the proposed method is verified through a case study.
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2014, Vol. 33 
