双曲线模型在某残积土地基沉降计算中的应用

摘要

For settlement deformation of residual soil foundation , it is proved that the calculation result of settlement is often too large when using compression modulus and it should use the deformation modulus obtained by field test .Therefore , some measured data of a certain residual soil foundation in Guangzhou were taken for an example in this paper , in which the nonlinear of settlement was expressed by hyperbolic model and the required calculation parameters were determined according to the field loading test , and finally the results were compared with test ones .The comparison results show that the method of settlement calculation with hyperbolic model for residual soil foundation is feasible .%对于残积土地基的沉降变形，实践证明采用压缩模量的计算结果往往偏大，应采用现场试验得到的变形模量来进行计算。为此，该文以广州某残积土地基的实测资料为例，对其非线性沉降采用双曲线模型来表示，所需计算参数则根据现场载荷试验来确定，最后将计算结果与试验结果进行对比。结果初步表明，双曲线模型法用于残积土地基的沉降计算是可行的。