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本文简要回顾了国内外嵌岩挖孔桩的发展历程 ,指出这类桩现存的主要问题。讨论了嵌岩挖孔桩的工作性状及桩土共同作用 ,阐述了其所表现的主要特点。用弹性理论的方法分析了嵌岩情况下 ,挖孔桩桩身纵向弯曲变形对其沉降的影响 ,并结合一个具体的桩基工程实例进行验证。最后 ,介绍了嵌岩挖孔桩的结构特征 ,对这类桩的结构设计提出一些新建议。
This paper briefly reviews the development of socketed piles at home and abroad, and points out the main existing problems of such piles. Discusses the working characteristics of the rock-socketed pile and the interaction between pile and soil, and expounds the main characteristics of the pile. The effect of the longitudinal bending deformation of the digging pile body on the settlement is analyzed by the elastic theory method under the condition of socketed rock. The concrete pile foundation engineering example is used to verify the settlement. Finally, the structural characteristics of rock-socketed piles are introduced, and some new suggestions are put forward for the structural design of such piles.