杭基礎の群杭効果における杭の並列および直列効果に関する解析的研究

抄録

This study aims to assess the pile-group effect of pile spacing and pile parallel-spasing to the direction of loading in large displacement analytically. The analytical modeling used in this study is 2-D FEM model for the ground in consideration of the nonlinear characteristics. Major findings are as follows: (1) Pile-group effect occurs by forming the isolated single pile a line in a parallel direction. The influence becomes remarkable in less than 5 times of pile diameter. (2) In the loading direction, it occurs by forming the isolated single pile in more than 10 times of pile diameter. The lateral resistance of lead pile is larger than subsequent piles, and it's larger than the isolated single pile. (3) The pile-group effects depend on a pile-soil-pile interaction.