长短桩组合桩基础模型试验及承载性能分析

Study on bearing behaviors and model tests of composite pile foundation with long and short piles

长短桩组合桩基础作为一种新型的桩基形式,对其承载性状、工作机理的研究很有必要。本文在室内模型试验的基础上,对长短桩组合桩基础的荷载与沉降的关系、桩身侧摩阻力分布、桩身内力以及长短桩组合桩基础中长桩和短桩承载性状发挥状况等问题进行了分析,得到了一些规律性的、有价值的结论。

Composite pile foundation with long and short piles is a new kind of pile foundation. It is necessary to study the bearing mechanics and working behavior. In this paper, the relation between bearing capacity and settlement ＆ distribution of the axial force and skin friction along pile and the beating mechanics of composite pile foundation with long and short piles were studied based on laboratory tests. The conclusions were valuable for engineering practice.