杭の浮き·沈みが上部構造の外力分布に与える影響に関する研究

摘要

The sway and rocking generally have a significant influence on the seismic performance of buildings with the pile foundation, particularly in the span direction. The major purpose of this study is to investigate the difference of the force distribution along the height of superstructures due to the vertical displacement of the piles. The paper also discusses the adaptability of the analytical method of the conventional sway and rocking model. It was concluded that the difference of the force distribution due to the vertical displacement of the piles was explained by decrease in the rotational stiffness of the foundation, and the effect of the ground deformation should be considered in the modeling of sway and rocking even for low-rise buildings.%2000年に施行された限界耐力計算では地盤の増幅特性を詳細に取り入れた検証法が採用され，結果として下部構造との連成の効果が耐震性能の検証に積極的に取り入れられるようになりつつある。