气候变化领域集成服务门户(CCPortal): Frost-heaving mechanical model for concrete face slabs of earthen dams in cold regions

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DOI	10.1016/j.coldregions.2019.03.009
	Frost-heaving mechanical model for concrete face slabs of earthen dams in cold regions
	Qin, Zipeng; Lai, Yuanming; Tian, Yan; Yu, Fan
发表日期	2019
ISSN	0165-232X
EISSN	1872-7441
起始页码	91
结束页码	98
卷号	161
英文摘要	Earthen dams are widely applied in the cold regions of northern China. However, the frost-heaving damage of concrete face slabs on the dam slopes is very serious under the dual effect of ice sheets and frost action during winter seasons. For this problem, a theoretical model is still lacking in the engineering design for water conservancy projects in cold regions. Starting with the study of the frost-heaving damage of concrete face slabs of earthen dams, this paper analyzes the damage types of the slabs under the effect of the static ice pressure and frost action, and clarifies the mechanism of the frost-heaving damage. The calculation method of the normal frost-heaving force of concrete face slabs is put forward, and a mechanical model suitable for the frost-heaving damage of concrete face slabs of earth-filled dams is established based on the mechanical analyses and engineering practice. The mechanical model can well explain the failure of frost heaving, extrusion and tensile strength of concrete face slabs under the double effect of the ice sheet and frost action, and a checking method for frost-heaving destruction is given. Finally, the mechanical model is used for the numerical analysis for an engineering example. The calculated results show that the model is reasonable and reliable, and it can provide theoretical basis for the design of concrete face slabs of earthen dams in cold regions.
英文关键词	Mechanical model; Frost-heaving analysis; Frost-action damage; Checking method; Concrete slab; Earthen dam; Cold regions
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	ICE-COVERED RESERVOIR ; THERMAL STRUCTURE ; REGIME
WOS记录号	WOS:000462759100009
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239454
作者单位	[Qin, Zipeng; Lai, Yuanming; Yu, Fan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Qin, Zipeng; Lai, Yuanming] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Tian, Yan] Shihezi Univ, Coll Water Conservancy & Architectural Engn, Shihezi 832000, Peoples R China
推荐引用方式 GB/T 7714	Qin, Zipeng,Lai, Yuanming,Tian, Yan,et al. Frost-heaving mechanical model for concrete face slabs of earthen dams in cold regions[J],2019,161.
APA	Qin, Zipeng,Lai, Yuanming,Tian, Yan,&Yu, Fan.(2019).Frost-heaving mechanical model for concrete face slabs of earthen dams in cold regions.COLD REGIONS SCIENCE AND TECHNOLOGY,161.
MLA	Qin, Zipeng,et al."Frost-heaving mechanical model for concrete face slabs of earthen dams in cold regions".COLD REGIONS SCIENCE AND TECHNOLOGY 161(2019).