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	Effect of dry density on the liquefaction behaviour of Quaternary silt
	Zhang Chong-lei; Jiang Guan-lu; Su Li-jun; Liu Wei-ming; Zhou Gong-dan
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2018
卷号	15期号:7页码:1597-1614
关键词	Liquefaction Quaternary silt Dry density Earthquake magnitude Liquefaction assessment Cyclic stress ratio
ISSN号	1672-6316
DOI	10.1007/s11629-018-4930-5
文献子类	Article
英文摘要	Quaternary silt is widely distributed in China and easily liquefies during earthquakes. To identify the influence of the dry density on the liquefaction behaviour of Quaternary silt, 40 cyclic triaxial liquefaction tests were performed on loose silt (dry density rho (d) =1.460 g/cm(3)) and dense silt (rho (d) =1.586 g/cm(3)) under different cyclic stress ratios (CSRs) to obtain liquefaction assessment criteria, determine the liquefaction resistance, improve the excess pore water pressure (EPWP) growth model and clarify the relationship between the shear modulus and damping ratio. The results indicate that the initial liquefaction assessment criteria for the loose and dense silts are a double-amplitude axial strain of 5% and an EPWP ratio of 1. The increase in the anti-liquefaction ability for the dense silt is more significant under lower confining pressures. The CSR of loose silt falls well within the results of the sandy silt and Fraser River silt, and the dense silt exhibits a higher liquefaction resistance than the sand-silt mixture. The relationships between the CSR and loading cycles were obtained at a failure strain of 1%. The EPWP development in the dense and loose silts complies with the fast-stable and fast-gentle-sharp growth modes, respectively. The power function model can effectively describe the EPWP growth characteristics of the dense silt. Finally, based on the liquefaction behaviour of silt, a suggestion for reinforcing silt slopes or foundations is proposed.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000438468900017
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/35555]
专题	Journal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.7
推荐引用方式 GB/T 7714	Zhang Chong-lei,Jiang Guan-lu,Su Li-jun,et al. Effect of dry density on the liquefaction behaviour of Quaternary silt[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(7):1597-1614.
APA	Zhang Chong-lei,Jiang Guan-lu,Su Li-jun,Liu Wei-ming,&Zhou Gong-dan.(2018).Effect of dry density on the liquefaction behaviour of Quaternary silt.JOURNAL OF MOUNTAIN SCIENCE,15(7),1597-1614.
MLA	Zhang Chong-lei,et al."Effect of dry density on the liquefaction behaviour of Quaternary silt".JOURNAL OF MOUNTAIN SCIENCE 15.7(2018):1597-1614.

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