Fundamental Study on lateral Behavior of Piles in Slope during an Earthquake.

本研究旨在探讨在侧向荷载作用下，斜坡中桩的性状直至破坏。通过理论分析和试验研究，得到以下结论：1.在加坡方向为逆时针方向的情况下，桩土体系的侧阻力一般随坡角的增大而增大。正倾角处的极限侧阻力大于负倾角处的极限侧阻力，而正倾角处的极限侧位移小于负倾角处的极限侧位移。2.群桩中前排桩的水平荷载大于后排桩的水平荷载。3.群效率有一个最终趋于常数的趋势，4.在小载荷下，本文的分析结果与试验结果吻合较好，但在较大载荷下，与试验结果有一定的偏差。

The purpose of this study is to investigate the behavior of piles in slope up to failure under lateral load. The research results on the basis of both theoretical and experimental means can be summarized as follows.1.The lateral resistance of the given pile-soil system generally increases with increasing the plus angle of the slope on condition that the plus means the counterclockwise to the loading direction. The ultimate lateral resistance at the plus angle is greater than that at the minus, while the ultimate lateral displacement at the plus is less than that at the minus.2.The piles in the front row of the group carry greater lateral load than those in the back row, and the ratio of the difference increases with increasing the slope angle.3.The group efficiency is in a tendency that its value finally converges to the constant, increasing with the displacement, and also that its value at the plus angle is greater than that at the minus.4.Although the predictions by the analysis which has been developed by us agree to the test results under small loads, they somewhat diverge from the test results under larger loads.