掺砾心墙土料的动强度特性研究  

Study on Dynamic Strength Characteristics of Gravel Soil Material

作　　者：杜晓东[1] 迟世春[1] 聂章博[1] 

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024

出　　处：《水利与建筑工程学报》2014年第3期110-114,共5页Journal of Water Resources and Architectural Engineering

摘　　要：为了探究掺砾心墙土料的动力特性,对其分别进行静力和动力的三轴试验,研究了不同固结比、不同掺砾比例、不同循环应力比对掺砾土动强度特性的影响。试验结果表明:动强度随固结应力比的增大先升高再降低,增大掺砾比例在一定程度上可以提高动强度,随着循环应力比增大动应变随振次增大速率变大且转折点较早出现。In order to study the dynamic properties of gravel soil material ,the static and dynamic triaxial tests were carried out ,and the dynamic strength characteristics of the gravel soil under different consolidation ratio and gravel contents as well as cyclic stress ratio were studied .The test results indicate that the dynamic strength increases firstly then reduces with the consolidation ratio increasing ,and it increases with the gravel content increasing to some extent .With the increase of cyclic stress ratio ,the rate of dynamic strain increases with vibration ,and the turning point of curves appears earlier .

关 键 词：掺砾土 心墙 动三轴试验 动强度 

分 类 号：TU435[建筑科学—岩土工程]