METHODS TO ESTIMATE LATERAL FORCE ACTING ON STABILIZING PILES

概要

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The growth mechanism of lateral force acting on stabilizing piles in a row due to the surrounding ground undergoing plastic deformation is discussed, and its theoretical analysis is carried out considering the interval between the piles. In this analysis, it is assumed that two types of plastic states occur in the ground just around piles, one of which is a plastic state satisfying Mohr-Coulomb's yield criterion and the other a plastic state where the soil is considered as a visco-plastic solid. The former is called the theory of plastic deformation and the latter the theory of plastic flow. Then, the characteristics of both theoretical equations are clarified by examining the effects of various parameters on the lateral force. Comparing between the theoretical and the observed lateral forces which are obtained in the stabilizing piles against landslides, the order of magnitude of the theoretical values due to both theories agrees with that of the observed values. Whereas, the theoretical values due to the Hennes' equation underestimate and the equation of the Public Works Research Institute overestimate the observed lateral force. Especially, it is clarified that under the condition of restrained pile top, the lateral force acting on stabilizing piles may be estimated by the theory of plastic deformation.
社団法人地盤工学会の論文
1975-12-15