挡水墙桩基承载力探讨

On the Bearing Capacity of the Pile Foundation of Water Retaining Wall

某输水工程长距离倒虹吸进水口埋深较大,进水口挡水墙自重及其承受的水平水推力也大,由于地基承载能力不满足要求,拟采用桩基处理。通过对同时承受水平荷载和竖向荷载的桩基进行计算,并通过试验桩反向验证,得出地基摩阻力及地基反力系数,可为同类土层中类似工程的桩基设计提供参考。

In a water conveyance project, the intake of the long distance inverted siphon structure is of a large buried depth. The self weight of the water retaining wall of the intake and the horizontal water pressure applied on the water retaining wall are also large. As the bearing capacity of the original foundation does not meet the requirement, pile foundation is adopt for the ground treatment. Through the calculation of a pile foundation bearing horizontal load and vertical load concurrently, and the verification with pile tests, the foundation friction coefficient and the foundation reaction coefficient are obtained. The results can provide useful reference for the pile foundation design in similar soil layers.