Parameter tests and engineering applications of small-strain hardening soil model of mucky silty clay in Hangzhou
The small-strain hardening soil(HSS)model is commonly used to analyze the impact of excavation of foundation pits on the environment in soft soil areas.Muddy silty clay is a highly sensitive type of soil that significantly influences engineering for the excavation of the foundation pit.This paper provides an introduction to the 13 parameters of the HSS model and methods to calculate them.We subjected Hangzhou silty clay to standard consolidation tests,triaxial consolidation drainage tests,triaxial consolidation drainage loading-unloading-reloading tests,and bending element tests in the laboratory,and used the results to identify and calculate the values of parameters of the HSS model of Hangzhou silty clay.Taking two typical engineering cases in Hangzhou as examples,three-dimensional finite element models of the excavation of the foundation pit are established,and the deep horizontal displacement and axial supporting force of the retaining structure are analyzed.A comparison of the measured data with the results of numerical simulations verified the accuracy of the parameters of the HSS model for muddy silty clay in Hangzhou.This study provides a reference for determining the values of parameters of the HSS model to numerically simulate the excavation of foundation pits in silty clay strata in the Hangzhou area.
万方数据
维普
