Nonlinear Differential Settlement Analysis

A one-dimensional consolidation-shear model based upon a broken-line relationship between shear modulus and strain on a log-log plot established from simultaneously conducted insitu shear wave velocity and dynamic/static triaxial compression tests is proposed to explain the non-linear differential settlement behaviour observed during the construction of a building in Beijing. Semi-empirical coefficients based on this model are back-figured from plate load tests and observed settlements using the conventional layered-sum method of settlement analysis and a computer program of soil-structure interaction for use in future design under similar conditions.