湖相淤泥质软土固结系数确定方法的研究  

Research on Determining Coefficient of Consolidation of Lacustrine Facies Soft Clay

作　　者：林永杰 刘玉刚 徐宝财 陈锋[1] 冒海军[1] 汪洪星 刘伟[1] 展旭财 

机构地区：[1]中科院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉430071 [2]中国石油西气东输管道公司,上海200000

出　　处：《武汉理工大学学报》2013年第6期91-95,共5页Journal of Wuhan University of Technology

摘　　要：采用有限的孔隙水压力监测数据,反演计算了土体固结系数,对比了反算的压缩模量与室内试验值。结果表明:针对深厚湖相淤泥质软土固结系数的求取,使用已有的计算固结系数的指数函数配合法是合理的;针对深厚湖相淤泥质软土径向固结系数ch的求取,cv/ch的假设比值的影响不大;固结速率在加载初期较快,随着时间的推移,固结速率逐渐减小,并趋于稳定。Using limited monitoring data of pore water pressure, consolidation coefficients of soils were inversely calculated,and then the calculated compression modulus were compared with the monitoring data. The results show that, for calculating the consolidation coefficient of deep lacustrine-facies silty soft soil, the existing exponential function matching method is reasonable. For calculating the radial consolidation coefficient Ch of deep lacustrine-facies silty soft soil, the influence of the supposed ratio of cv/ch is not SO big. The consolidation velocity is rather faster at the primary loading stage, but it becomes slower and slower to nearly a constant as the time goes on.

关 键 词：湖相淤泥质软土 竖向排水井 反演计算 固结系数 压缩模量 

分 类 号：TU447[建筑科学—岩土工程]