EXPERIMENTAL STUDY ON THE VELOCITY DEPENDENCY OF AXIAL SOIL SPRING FOR BURIED PIPE BY SHAKING TABLE

Abstract

 Axial soil spring between the pipe and ground is treated under the assumption that only a static friction acts. A simple coulomb friction is used in many of seismic response analysis on the buried pipe. In this study, the velocity dependency of shear stress between the pipe and ground was tried to make clear by the real-scale pipe pulling-out test using the shaking table. As a result, it has been understood that the maximum shear stress are different about twice depending on the pipe-moving velocity, and the maximum shear stress and the sliding characteristics are different by the ground compacting condition.