作　　者： ; ; ;

机构地区： 东南大学交通学院

出　　处： 《公路交通科技》 2006年第2期10-14,18,共6页

摘　　要： 根据大量室内试验,研究了连云港软粘土的工程特性。建立了连云港软粘土物理力学指标之间的相关关系,并分析了其压缩特性;比较并评价了各种固结系数计算方法,改进了三点法;讨论了应力水平和应力历史对次固结系数的影响;研究了次固结系数与压缩指数关系;最后,根据三轴流变试验结果,将连云港软土作为弹-粘塑性体来研究。 Based on many laboratory tests, the engineering properties of Lianyungang soft clay are investlgated.Firsfly, the relationship between its physical and mechanical indexes are obtained, then, the compressibility of Lianyungang soft clay is analyzed. With the com- parison and evaluation of all calculation methods of consolidation coefficient, a modified three-poim method is put forward. Subsequently, the influences of stress level and stress history on the secondary consolidation ceeffieient are discussed. The relationship of the secondary consolidation coefficient and the compression index is discussed.Finally, according to the results of triaxial theological test, Lianyungang soft clay can be investigated as an elastic-viscoplasticity.

关 键 词： 软粘土 应力历史 应力水平 次固结系数 蠕变

领　　域： [建筑科学] [建筑科学]