非均质地基中桩基的荷载——沉降特性

非均质地基中承受竖向荷载单桩的荷载—沉降特性是桩基设计中所要考虑的重要因素．工程上通常是通过静载荷试验来测取桩的荷载—沉降曲线，耗资巨大．通过对现有的荷载传递分析法模型进行改进，并利用“桩尖位移等值法”来计算竖向受荷单桩的荷载—沉降曲线，同时编制了计算机程序，并将用该法计算而得的荷载—沉降曲线与现场实测的数据进行拟合对比，结果比较吻合．最后，分析了桩长、桩径、桩身混凝土弹性模量等参数对桩荷载—沉降曲线的影响，得出了一些较有意义的结果．

Characteristics of the load-settlement of the piles in non-homogeneous soils

The behavior of the axial load-settlement of single pile in non-homogeneous foundation is a very important factor that should be considered in the design of pile foundations. The costly plate loading test is usually used to obtain the load-settlement curve of the pile. The model of the load transfer method is developed and the method of equal pile point settlement is used to calculate the axial load-settlement curve of the single pile. Also, a computer program is developed according to the method and the results are consistent with the field test data. The influences on load-settlement curve according to the parameters such as the pile length, the pile diameter and the elastic modulus of the pile are analyzed in the paper and some useful results are obtained.