An analytical approach on flexural toppling failure of counter-tilt slopes of layered rock
CHEN Congxin，ZHENG Yun，SUN Chaoyi
(State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China)
Abstract：Flexural toppling failure is one of the most common failure types of counter-tilt slopes of layered rock. There are many questions need to be solved currently. The failure process and mechanism of the flexural toppling of counter-tilt slopes of layered rock were clarified based on the analysis of model test results. The mechanical model and stability analysis method of the flexural toppling of counter-tilt slopes of layered rock were established on the basis of the limit equilibrium theory for cantilever beams，and a special computer code was developed to provide rapid evaluation of slope stability for the flexural toppling of counter-tilt slopes of layered rock. Finally，two case studies were illustrated for practical verification of the proposed approach，and a parametric study was conducted. Some conclusions useful for design and construction of these types of slopes were drawn.
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2016, Vol. 35 
