气候变化领域集成服务门户(CCPortal): Critical Dynamic Stress and Accumulative Deformation Evolution of Embankment Silty Clay Subjected to Cyclic Freeze-Thaw

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DOI	10.1155/2021/9068254
	Critical Dynamic Stress and Accumulative Deformation Evolution of Embankment Silty Clay Subjected to Cyclic Freeze-Thaw
	Wang, Lina; Weng, Zhiyu; Wang, Tianliang; Liu, Qiang; Li, Guoyu; Zhao, Yingying
通讯作者	Wang, TL (通讯作者)，Shijiazhuang Tiedao Univ, State Key Lab Mech Behav & Syst Safety Traff Engn, Shijiazhuang 050043, Hebei, Peoples R China. ; Wang, TL (通讯作者)，Shijiazhuang Tiedao Univ, Key Lab Rd & Railway Engn Safety Control, Minist Educ, Shijiazhuang 050043, Hebei, Peoples R China.
发表日期	2021
ISSN	1070-9622
EISSN	1875-9203
卷号	2021
英文摘要	In cold regions, the permanent settlement of embankment is mainly caused by the repeated freeze-thaw process and long-term repeated train loads. Meanwhile, the critical dynamic stress (sigma(dcr)) is an important parameter index for determining embankment stability. Therefore, the accumulative permanent deformation evolution and critical dynamic stress of embankment soil subjected to cyclic freeze-thaw were studied using dynamic triaxial tests. Firstly, a numerical model for calculating critical dynamic stress considering the repeated freeze-thaw process was proposed, which shows that the critical dynamic stress of embankment soil rapidly decreases in the first two repeated freeze-thaw cycles, whereas it tends to be stable after the subsequent freeze-thaw process. Next, based on the normalization of the critical dynamic stress, an explicit model for predicting accumulative plastic strain (epsilon(p)) of embankment soil was established. The above model considers freeze-thaw times, repeated dynamic stress amplitude (sigma(d)), and loading times, in which all material parameters of Qinghai-Tibet silty clay were presented. Thus, the critical dynamic stress and accumulative plastic strain models established in this paper can be applied to judge the embankment stability and predict the embankment settlement induced by train loads in cold regions.
关键词	MECHANICAL-PROPERTIES
语种	英语
WOS研究方向	Acoustics ; Engineering ; Mechanics
WOS类目	Acoustics ; Engineering, Mechanical ; Mechanics
WOS记录号	WOS:000703390500002
来源期刊	SHOCK AND VIBRATION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255069
作者单位	[Wang, Lina; Weng, Zhiyu] Yunnan Agr Univ, Sch Construct Engn, Kunming 650201, Yunnan, Peoples R China; [Wang, Lina; Wang, Tianliang] Shijiazhuang Tiedao Univ, State Key Lab Mech Behav & Syst Safety Traff Engn, Shijiazhuang 050043, Hebei, Peoples R China; [Wang, Lina; Liu, Qiang] Powerchina Kunming Engn Corp Ltd, Kunming 650051, Yunnan, Peoples R China; [Weng, Zhiyu] Huaqiao Univ, Fujian Res Ctr Tunneling & Urban Underground Spac, Xiamen 361021, Peoples R China; [Wang, Tianliang] Shijiazhuang Tiedao Univ, Key Lab Rd & Railway Engn Safety Control, Minist Educ, Shijiazhuang 050043, Hebei, Peoples R China; [Li, Guoyu] Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Zhao, Yingying] Southeast Univ, Sch Civil Engn, Nanjing 211189, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Lina,Weng, Zhiyu,Wang, Tianliang,et al. Critical Dynamic Stress and Accumulative Deformation Evolution of Embankment Silty Clay Subjected to Cyclic Freeze-Thaw[J]. 中国科学院西北生态环境资源研究院,2021,2021.
APA	Wang, Lina,Weng, Zhiyu,Wang, Tianliang,Liu, Qiang,Li, Guoyu,&Zhao, Yingying.(2021).Critical Dynamic Stress and Accumulative Deformation Evolution of Embankment Silty Clay Subjected to Cyclic Freeze-Thaw.SHOCK AND VIBRATION,2021.
MLA	Wang, Lina,et al."Critical Dynamic Stress and Accumulative Deformation Evolution of Embankment Silty Clay Subjected to Cyclic Freeze-Thaw".SHOCK AND VIBRATION 2021(2021).