Effect of microstructure properties on of dynamic residual deformation behavior of saturated loess

doi:10.11779/CJGE2015S2028

	Effect of microstructure properties on of dynamic residual deformation behavior of saturated loess
	Wang, Qian; Wang, Ping; Wang, Jun; Zhong, Xiu-Mei; Ma, Hai-Ping; Feng, Min-Jie
刊名	岩土工程学报
	2015-07-01
卷号	37 页码:143-147
关键词	Sediments Cementing (shafts) Deformation Dynamics Elastoplasticity Liquefaction Microstructure Plasticity Soil liquefaction Soil testing Structural properties Deformation behavior Development mechanisms Dynamic triaxial tests Liquefaction strength Loess Micro-structural properties Microstructure properties Residual deformation
ISSN号	1000-4548
DOI	10.11779/CJGE2015S2028
文献子类	Article
英文摘要	Based on the SEM tests and dynamic triaxial tests on the loess with different microstructures from the Loess Plateau region and the liquefaction tests on undisturbed and disturbed Lanzhou loess with the same property state, the influence rules of structural properties of saturated loess on liquefaction strength are obtained. The relationship between microstructural types and the dynamic residual deformation behavior of saturated loess are qualitatively and quantitatively analyzed. Moreover, the development mechanisms of the dynamic residual deformation of the loess with different microstructures are obtained through analysis of the dynamic stress-dynamic residual strain of the loess in different regions. The results show that the liquefaction strength of saturated loess relates to the micro structure. The liquefaction strength of the soil decreases during the disturbed process because the particle reorganization and the cementation are weakened. The dynamic residual deformation of the saturated loess exponentially increases with the increase of vibration times, and the fitting parameters are mainly controlled by the density and plasticity index of the loess. The increase of dynamic residual deformation closely relates to the microstructural properties, the higher the structural strength, the slower growth the dynamic residual deformation of the loess. The development mechanisms of dynamic residual deformation are different for the loess with different microstructural properties. The dynamic residual deformation of weak cementation loess can be divided into visco-elastoplastic and plastic stages. However, the dynamic residual deformation of stronger cemented loess can be divided into visco-elastoplastic, visco-plasticity and plastic stages successively during liquefaction. ©, 2015, Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering. All right reserved.
学科主题	Mechanical Properties ; Test Equipment And Methods ; Soils And Soil Mechanics ; Mines And Quarry Equipment And Operations ; Chemical Operations ; Mechanics ; Materials Science
出版地	NANJING
语种	中文
内容类型	期刊论文
源URL	[http://ir.lzu.edu.cn/handle/262010/182435]
专题	土木工程与力学学院_期刊论文
推荐引用方式 GB/T 7714	Wang, Qian,Wang, Ping,Wang, Jun,et al. Effect of microstructure properties on of dynamic residual deformation behavior of saturated loess[J]. 岩土工程学报,2015,37:143-147.
APA	Wang, Qian,Wang, Ping,Wang, Jun,Zhong, Xiu-Mei,Ma, Hai-Ping,&Feng, Min-Jie.(2015).Effect of microstructure properties on of dynamic residual deformation behavior of saturated loess.岩土工程学报,37,143-147.
MLA	Wang, Qian,et al."Effect of microstructure properties on of dynamic residual deformation behavior of saturated loess".岩土工程学报 37(2015):143-147.