Because of deletion of soil,the pile foundation on slope is more easy to be overturn,and it has less coefficient of lateral resistance.But no design has been made for this problem.For this, by analyang the pile-soil interaction on slope,combining with older research for mvalue and theory of retaining wall, a pile was designed with toe to prevent it′s overturn on slope.Under horizontal load, the dead weight was used to creat a moment to resistance the horizontal load by a structure witch is close to the toe of pile to compensate the lost of horizontal resistance for slope.Two different kind of pile were designed with toe for rigid pile and elastic pile, it′s structure and stability were verified with numerical simulation.%位于斜坡地形上的桩基础,由于斜坡的存在使其向下坡一侧的土体缺失,水平抗力系数下降,桩基础更容易发生倾覆;但目前对于斜坡上的桩基础并没有针对这一点进行专门的优化设计.针对这一点,通过分析了斜坡桩土相互作用的特点,结合已有的斜坡m值折减研究与挡土墙墙趾的抗倾覆原理,设计了一种针对斜坡地形的抗倾覆加趾桩.加趾桩通过类似于挡土墙墙趾的结构,在水平力作用下利用桩身的重量产生弯矩以对抗水平荷载,以补偿斜坡地形造成的抗倾覆力损失.对刚性桩和弹性桩分别设计了两种形态的加趾桩,并利用数值模拟对其结构和稳定性进了验证.
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