超固结土的一维非线性固结计算参数及其试验测定  

Computational Parameters on One-dimensional Nonlinear Consolidation of Overconsolidation Soil and Its Experimental Determination

作　　者：齐添[1] 谢康和[2] 唐胡乐[1] 

机构地区：[1]广州穗监工程质量安全检测中心,广州510150 [2]浙江大学软弱土与环境土工教育部重点实验室,杭州310058

出　　处：《工程地球物理学报》2008年第6期735-741,共7页Chinese Journal of Engineering Geophysics

基　　金：国家自然科学基金项目(编号:50679074);国家教育部高校博士点基金项目(编号:20070335179)资助

摘　　要：基于e-lgp和e-lgkv的非线性经验公式来分析超固结土问题,并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7个一维非线性超固结土的计算参数。利用GDS高级固结仪对萧山黏土进行超固结土的一维固结渗透联合试验,整理分析实验数据,并详细列出了基于GDS高级固结仪的一维非线性固结计算参数的测定结果,证明了超固结土在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。The well--known empirical e-lgp and e-lgkv relations are introduced into the study,and the corresponding governing equations for nonlinear consolidation of over--consolidated saturated soil are proposed, taking into account nonlinear consolidation with variable compressibility and permeability, under time--dependent loading, and the self weight of the soil. Seven computational parameters on one--dimensional nonlinear consolidation are summarized from the equation. GDS ADVCTS is operated to investigate the over--consolidation behavior of Xiaoshan Clay, and testing results of the computational parameters on one--dimensional nonlinear over--consolidation are listed in detail. The nonlinear behavior of compression and permeability during the consolidation of soft soil is verified.

关 键 词：超固结土 非线性 GDS高级固结仪 压缩性 渗透性 

分 类 号：TU432[建筑科学—岩土工程] X511[建筑科学—土工工程]