Abstract：The friction effect between basement and soil was simplified as spring model in the traditional theoretical methods on the lateral displacement analysis of caisson foundation for simplicity of computation. This simplicity not only deletes the mutation of the basement friction but also makes the difficulty of obtaining the parameters，which leads to the lateral slide critical load cannot be computed. To address this problem，the classic Coulomb law of friction is used to replace the hypothetical spring model at the caisson basement，and the soil reaction along the well bore is computed by using Winkler model. According to the displacement coordination condition on the structure-soil interfaces，the formulas of lateral displacement，slide critical load，relation between enhancement factor of lateral bearing capacity and depth are derived. From the contrast of examples，it is clear that the friction parameter is convenient to be obtained，and the displacement shows remarkable mutant characteristics. The slide critical load can be deduced directly，and the formulas proposed can be applied to practical engineering conveniently.
胡 丰，邵国建. 基于库仑摩擦定律的沉井基础水平位移分析[J]. 岩石力学与工程学报, 2014, 33(sl): 3056-3061.
HU Feng，SHAO Guojian. ANALYSIS OF LATERAL DISPLACEMENT OF CAISSON FOUNDATION BASED ON COULOMB LAW OF FRICTION. , 2014, 33(sl): 3056-3061.
GEROLYMOS N，GAZETAS G. Winkler model for lateral response of rigid caisson foundations in linear soil[J]. Soil Dynamics and Earthquake Engineering，2006，26(5)：347-361.
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2014, Vol. 33 
