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

本研究的目的是研究在水平荷载作用下，边坡中桩的破坏性状。理论和试验相结合的研究成果概括如下：1.在正角与荷载方向成逆时针方向的情况下，桩土体系的侧摩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角处的极限侧向抗力，而正角处的极限侧向位移小于负角处的极限侧向位移。2.群桩前排的侧向荷载大于后排桩的侧向荷载，且两者之比随倾斜角度的增大而增大。3.群桩效率有最终收敛于恒定值的趋势，且随位移量的增大而增大。4.尽管我们所建立的分析预测与小荷载下的试验结果相吻合，在较大载荷下，它们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.