循环荷载下粉质中液限黏土和粉煤灰土的动剪强度研究  

Study on dynamic shear strength of middle-liquidity limit silty clay and fly ash soils under cyclic loading

作　　者：魏海斌[1] 刘寒冰[1] 高一平[1] 方瑛[2] 李长雨[1] 

机构地区：[1]吉林大学交通学院 [2]吉林大学测试中心,长春130022

出　　处：《岩土力学》2007年第9期1927-1930,共4页Rock and Soil Mechanics

基　　金：863国家高科技研究发展计划项目(No.2007AA11z114);吉林大学创新基金(2003)

摘　　要：通过对路基填料粉质中液限黏土和粉煤灰土的动力循环荷载试验,分析了粉质中液限黏土和粉煤灰土1:2的动力特性,得出了动剪强度与循环荷载次数间的变化规律以及动模量与动应变的关系表达式。研究结果表明:粉煤灰土1:2动剪强度优于粉质中液限黏土,可以作为路基填料。Based on the triaxial tests of middle-liquidity limit silty clay and fly ash soils（1：2） of roadbed fillings,the dynamical characteristics of middle-liquidity limit silty clay and fly ash soils（1：2） are analyzed.Compared the characteristics of the two materials,the variation law between the dynamic shear strength and the number of circular load is educed.Then the relationship formula of the dynamical elastic modulus and elastic strain is set up.It is found that the fly ash soils（1：2） is better than middle-liquidity limit silty clay in dynamic shear strength.It has superiority as roadbed fillings.

关 键 词：粉质中液限黏土 粉煤灰土 动三轴试验 动剪强度 动模量 

分 类 号：TU411[建筑科学—岩土工程]