Abstract
The skin friction of Y-section pile is non-uniform distributed along its inverted arch arc, the calculation of additional stress for the uniform distribution can not take the resulting deviation of actual distribution into account. Combine the function expression of non-uniform distribution model and mindlin formula to establish the calculation method of additional stress coefficient by numerical integration and analyze the influences of the parameters LRθsδ, then compare the conclusion with the uniform distribution solution and Geddes solution. Additional stress factor of non-uniform distribution model is larger than that based on uniform distribution model,the additional stress decreases with the increase of R, s, δ and increases with the increase of θ and L, and the Mechanisms of the changes coursed by these parameter are also analyzed. Some significant conclusions are obtained.
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