【摘要】 基于成层竖井地基固结理论,分析了竖井地基沉降随时间变化的一般表达式,提出了利用最小二乘优化方法根据实测数据拟合沉降曲线,进而确定竖井地基平均固结度的方法。通过应用于一真空预压作用下竖井地基的工程实例,对该方法的适用性作了分析,结果表明实例沉降数据与理论曲线吻合较好。更多还原

【Abstract】 A method to find the average consolidation degress of stratified ground partially penetrated by vertical drains was proposed on the basis of consolidation theory and measured settlement data.The least squares optimization method was employed to fit the measured settlement data and to determine the parameters in the analytical expression of consolidation settlement. A typical example of applying this method to a stratified foundation with vertical drains under vacuum preloading was provided, and analysis on its applicability was made. The results show that the measured settlement data are in good agreement with the theoretical curve.更多还原