DESIGN METHOD OF FOUNDATION STRUCTURE, AND FOUNDATION STRUCTURE

摘要

PROBLEM TO BE SOLVED: To suppress damaging of a pile head part while transmitting horizontal force from a superstructure body to a ground improvement body at a time of earthquake, in consideration of the above fact.;SOLUTION: A design method is for a foundation structure having a pile 22 buried in a ground 18 for supporting a superstructure body 14 on the ground 18, and a grid-form ground improvement body 30 provided in the ground 18 to surround the pile 22, and having horizontal force transmitted thereto from the superstructure body 14. Specifications of the pile 22 and the grid-form ground improvement body 30 are set so that a total value ε of axial force edge distortion ε_N and a bending edge distortion ε_M is less than allowable edge distortion of a pile head part 22U, the axial force edge distortion generating on the pile head part 22U by axial force Ne transmitted to the pile head 22U of the pile 22 from the superstructure body 14, and the bending edge distortion generating on the pile head part 22U due to horizontal displacement δ generating breaking shear distortion γ_max on the grid-form ground improvement body 30.;SELECTED DRAWING: Figure 6;COPYRIGHT: (C)2018,JPO&INPIT