Study on Creep Characteristics of Expansive Soil in High-Fill Channel of South-to-North Water Transfer Project

doi:10.1155/2020/8852131

	Study on Creep Characteristics of Expansive Soil in High-Fill Channel of South-to-North Water Transfer Project
	Guo, Jianhua 1,2; Dai, Zhangjun 1; Li, Shichang 1,2; Muhammad, Nadeem 1,2; Gao, Hui 1,2
刊名	ADVANCES IN CIVIL ENGINEERING
	2020-11-12
卷号	2020 页码:19
ISSN号	1687-8086
DOI	10.1155/2020/8852131
英文摘要	In the Nanyang section of the midroute of the South-to-North Water Transfer Project, the expansive soil is often used as a filler for high-fill channels. After the channel is stabilized, the expansive soil undergoes creep deformation over time. Studying the creep characteristics of expansive soils in different environments is particularly important for evaluating the safe operation of high-fill channels. In the current study, the creep test of expansive soil under different moisture content and dry density was carried out. It is proposed that the slope of the fitted straight line in the compression curve of the expansive soil can be used to represent the secondary consolidation coefficient of unsaturated expansive soil, and the variation law of the secondary consolidation coefficient under different environmental factors is obtained. The modified Bjerrum calculation method considering the influence of additional load and lateral deformation yields the postexpansion soil settlement curve model to determine the control index range of the project site. Moreover, it is also observed that the secondary consolidation coefficient of unsaturated expansive soil increases with the increase of moisture content and decreases with the increase of dry density. The coefficient of secondary compression of unsaturated expansive soil is linearly related to dry density and moisture content. After the preconsolidation treatment of the expansive soil, when the load level is less than the preload, the secondary consolidation coefficient is smaller, otherwise the secondary consolidation coefficient is larger.
资助项目	National Natural Science Foundation of China[41702337]
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	HINDAWI LTD
WOS记录号	WOS:000595650900002
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25184]
专题	中科院武汉岩土力学所
通讯作者	Dai, Zhangjun
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Guo, Jianhua,Dai, Zhangjun,Li, Shichang,et al. Study on Creep Characteristics of Expansive Soil in High-Fill Channel of South-to-North Water Transfer Project[J]. ADVANCES IN CIVIL ENGINEERING,2020,2020:19.
APA	Guo, Jianhua,Dai, Zhangjun,Li, Shichang,Muhammad, Nadeem,&Gao, Hui.(2020).Study on Creep Characteristics of Expansive Soil in High-Fill Channel of South-to-North Water Transfer Project.ADVANCES IN CIVIL ENGINEERING,2020,19.
MLA	Guo, Jianhua,et al."Study on Creep Characteristics of Expansive Soil in High-Fill Channel of South-to-North Water Transfer Project".ADVANCES IN CIVIL ENGINEERING 2020(2020):19.