【摘要】 基于e-lgp和e-lgkv的非线性经验公式,建立了能综合考虑土的压缩性和渗透性在固结过程中呈非线性变化、荷载变化和自重等复杂因素的一维非线性固结控制方程,总结出5个一维非线性固结计算参数.针对国内传统固结渗透试验设备的缺陷和试验方法上受缚于太沙基一维线性固结理论,介绍了GDS先进固结仪的硬件组成和软件系统GDSLAB v2,强调了本套试验设备在测定软土非线性固结计算参数的优势.根据对萧山软土的试验数据分析,详细列出了基于GDS先进固结仪的一维非线性固结计算参数的测定结果,证明了软土固结过程中压缩性和渗透性随固结压力非线性变化的特性.更多还原

【Abstract】 Based on the empirical e-lg p and e-lg k_v relations,the basic governing equation of one-dimensional nonlinear consolidation was derived,taking into account nonlinear consolidation with variable compressibility and permeability,under time dependent loading and the self weight of the soil.Five computational parameters on one-dimensional nonlinear consolidation were summarized from the equation.This paper presented the hardware configuration and software function of the GDS advanced consolidation testing system(GDS ADVCTS),and emphasized the advantage of determination of nonlinear consolidation parameters compared with the traditional testing equipment and method.GDS system was used to investigate the consolidation behavior of Xiaoshan Clay,and testing results of one-dimensional nonlinear consolidation computational parameters were listed in details.The nonlinear behavior of compressibility and permeability during the consolidation of soft soil was verified.更多还原