The influence of dry density and matric suction on the deformation and the strength characteristics of the remolded unsaturated loess soils

doi:10.13722/j.cnki.jrme.2015.1761

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	The influence of dry density and matric suction on the deformation and the strength characteristics of the remolded unsaturated loess soils
	Gao, Denghui 1; Chen, Zhenghan 1,2; Guo, Nan 1; Zhu, Yanpeng 1; Hu, Shengxia 3; Yao, Zhihua 4
刊名	Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering
	2017-03-15
卷号	36 期号:3 页码:736-744
关键词	Deformation Friction Nonlinear systems Sediments Soil mechanics Strain hardening Stress-strain curves Deformation and strength Internal friction angle Loess soils Matric suctions Non-linear model Strength characteristics Stress strain relation Volumetric deformation
ISSN号	10006915
DOI	10.13722/j.cnki.jrme.2015.1761
英文摘要	In order to solve the problems of the settlement and stability of high-filled slopes, three-dimensional shear tests were carried out to investigate the behavior of unsaturated soil of different dry densities under controlled suction from Yan'an new district. The variations of the deformation and strength of the remolded loess soils were studied. The test results show that the dry density and matric suction influence remarkably the damage form and characteristics of the deformation and strength. The stress-strain relation varies from the strain hardening to the ideal elasto-plastic then to the strain softening as the increasing of dry density. The greater the dry density and suction, the more obvious the dilation and the higher the strength. The cohesion, the friction angle of the suction and the internal friction angle increased with the increasing of the dry density. The friction angle of unsaturated loess soil changes little with the matric suction variation, but the cohesion increases linearly with the increasing of matric suction. The initial tangential modulus and the volumetric deformation modulus increased with the increasing of the dry density and suction. An expression for strength and a nonlinear model considering the impact of dry density and suction and values of relevant parameters of the soil are proposed for the predictions of the parameters of the strength and deformation of remolded loess soils under different densities and different matric suctions. © 2017, Science Press. All right reserved.
语种	中文
出版者	Academia Sinica
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114889]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China; 2.Department of Civil Engineering, Logistical Engineering University of PLA, Chongqing; 401311, China; 3.School of Architectural and Civil Engineering, Yan'an University, Yan'an; Shaanxi; 716000, China; 4.Department of Airdrome Construction Engineering, Air Force Engineering University, Xi'an; Shaanxi; 710038, China
推荐引用方式 GB/T 7714	Gao, Denghui,Chen, Zhenghan,Guo, Nan,et al. The influence of dry density and matric suction on the deformation and the strength characteristics of the remolded unsaturated loess soils[J]. Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering,2017,36(3):736-744.
APA	Gao, Denghui,Chen, Zhenghan,Guo, Nan,Zhu, Yanpeng,Hu, Shengxia,&Yao, Zhihua.(2017).The influence of dry density and matric suction on the deformation and the strength characteristics of the remolded unsaturated loess soils.Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering,36(3),736-744.
MLA	Gao, Denghui,et al."The influence of dry density and matric suction on the deformation and the strength characteristics of the remolded unsaturated loess soils".Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering 36.3(2017):736-744.