Damping ratio evolution of saturated Ningbo clays under cyclic confining pressure

doi:10.1016/j.soildyn.2021.106581

	Damping ratio evolution of saturated Ningbo clays under cyclic confining pressure
	Huang, Juehao 1,4,5,6; Chen, Jian 1,4,5,6; Ke, Wenhui 3; Zhong, Yu 2; Lu, Yuan 1,6; Yi, Shun 1,6
刊名	SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
	2021-04-01
卷号	143 页码:12
关键词	Cyclic triaxial test Damping ratio Accumulated axial strain Cyclic stress ratio Effective consolidated confining pressure Loading frequency Cyclic confining pressure
ISSN号	0267-7261
DOI	10.1016/j.soildyn.2021.106581
英文摘要	The mechanical behaviours of soft clays under cyclic loading are not only related to loading parameters, but also the physical indices of soft clay. One-way cyclic triaxial tests with constant confining pressure were adopted, however, the stress field induced by traffic loads includes cyclic confining pressure and cyclic deviator stress. So far, the damping ratio evolution of soft clays under traffic loading has rarely been studied. To establish an empirical formula for the damping ratio, a series of cyclic triaxial tests with variable confining pressure were conducted on saturated Ningbo clay. The effects of some factors, such as cyclic stress ratio (CSR), effective consolidated confining pressure, loading frequency, and cyclic confining pressure were investigated. The trend of the relationship between the normalised damping ratio and accumulated axial strain is similar under different conditions, in which the normalised damping ratio degrades with the increase of accumulated axial strain. Be -sides, the damping ratio increases with an increase of CSR and effective consolidated confining pressure, while decreases with increasing loading frequency and cyclic confining pressure. Based on that, an empirical formula relating to CSR, effective consolidated effective confining pressure, loading frequency, and cyclic confining pressure is established to predict damping ratio under cyclic loading. A comparison between predicted results and measured data shows that the empirical formula cannot only characterise the trend of the damping ratio versus accumulated axial strain curve, but also provides a good prediction of the damping ratio.
资助项目	National Natural Science Foundation of China[51909259] ; National Natural Science Foundation of China[52079135] ; International Partnership Program of Chinese Academy of Sciences[131551KYSB20180042]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000629709700001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25957]
专题	中科院武汉岩土力学所
通讯作者	Huang, Juehao
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Wuhan Metro Grp Co Ltd, Wuhan 430070, Peoples R China 3.Wuhan Municipal Construct Grp Co Ltd, Wuhan 430023, Peoples R China 4.Ningbo Univ Technol, Soft Soil Res Ctr, State Key Lab Geomech & Geotech Engn, Ningbo 315211, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, Hubei Key Lab Geoenvironm Engn, Wuhan 430071, Peoples R China 6.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Huang, Juehao,Chen, Jian,Ke, Wenhui,et al. Damping ratio evolution of saturated Ningbo clays under cyclic confining pressure[J]. SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,2021,143:12.
APA	Huang, Juehao,Chen, Jian,Ke, Wenhui,Zhong, Yu,Lu, Yuan,&Yi, Shun.(2021).Damping ratio evolution of saturated Ningbo clays under cyclic confining pressure.SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,143,12.
MLA	Huang, Juehao,et al."Damping ratio evolution of saturated Ningbo clays under cyclic confining pressure".SOIL DYNAMICS AND EARTHQUAKE ENGINEERING 143(2021):12.