Approximate Calculation of Upper Limit of Subgrade Reaction Force Acting on Buried Pipe

Abstract

This report presents that the approximate value obtained by synthesizing Rankine's plasticizing stress by setting the range of passive region where compressive force increases is roughly consistent with yielding ground reaction force obtained in experiment. The results of comparing the results of several experiments when the pipe is pushed horizontally or upward are shown, and it is considered that upper limit of ground reaction force acting on pipe can be evaluated by diameter of pipe, burial depth, unit weight of soil, internal friction angle, and adhesive force. The approximate reaction values can be used for designing calculation of buried pipeline in large deformation.