An Investigation of Effect of Distance and Shape of Pile on the Displacement of Gag Pile by 3D FEM Analysis

Abstract

Press-in 3D FEM analyses were carried out to examine the behavior of a buried gas pipe and the soil ground during the press-in installation of a sheet pile. The displacement of a buried gas pipe was set as the parameter to investigate the gas pipe behavior. In the first analytical model, both of the sheet pile and the gas pipe were modeled as rectangular solid structures and the horizontal distances between a sheet pile and a buried gas pipe were arranged in 100mm, 200mm, 500mm and 1000mm. In the second model, not only the rectangular shape but also a standardized shape (SP-3) based on the real model was made as a sheet pile. In addition, 6 series of modeling were prepared in terms of the setting direction of the SP-3 sheet pile and the horizontal direction between the sheet pile and the gas pipe. In order to clarify the behavior of the inside ground, strain contour diagrams were shown in addition to the displacement of the gas pipe. Through these two types of analyses, the effect of the press-in installation to underground structures was discussed.