夯扩桩在海淤发育地基中的应用与研究

Application and Study of Tamping Expanding Pile in Sea Silt Ground

连云港市属海淤层较发育的地区，多层建筑常采用桩基础。结合两个施工实例，介绍持力层的选择、一次夯扩和二次夯扩的参数选择问题，对夯扩桩和沉管灌注桩从经济技术指标方面进行了对比。应用结果表明，夯扩桩在该市海淤发育区多层建筑的地基处理中值得推广使用。

Lianyungang city belongs to region of sea silt ground. Pile foundation is selected in the coustruction of manystorey building first. Tamping expanding pile is led into this city since 1996, and two projects have been carried out successfully. Achieved satisfactory technical and econonic results is summaried in this paper.