Abstract
Based on the analysis of influence of fissures and accumulation rainwater at toe of slope under rainfall condition on expansive soil slope, A limit equilibrium method was proposed based on former studies by dividing the slope into fully fissures area A , partially developed fissures area B , accumulation rainwater influence area B′, without fissures area C, and considering the top slope tension crack to reflect influence of fissures on expansive soil slope under rainfall condition. The depths of every layer and strength indexes were determined. The computed results of an engineering example using bishop method showed that the proposed method can not only reflect the characteristics of expansive soil landslide but also evaluate the long-term stability of the slope at ultimate state.
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