Effects of cyclic wetting-drying on the mechanical behavior and improved damage model for sandstone

doi:10.1080/1064119X.2020.1823535

	Effects of cyclic wetting-drying on the mechanical behavior and improved damage model for sandstone
	Liu, Xuewei 1; Liu, Quansheng 1; Huang, Shibing 3; Liu, Bin 1; Liu, Jiang 2
刊名	MARINE GEORESOURCES & GEOTECHNOLOGY
	2020-09-23
页码	11
关键词	Wetting-drying cycle damage variable damage constitutive model sandstone rock mechanics
ISSN号	1064-119X
DOI	10.1080/1064119X.2020.1823535
英文摘要	The degradation of rock mechanical behavior after cyclic wetting and drying could affect the stability of rock slope, embankment, and tunnel significantly. A series of tests were first conducted on sandstone collected from a reservoir bank slope. The results showed that the mechanical parameters (including tensile strength, uniaxial compressive strength, elastic modulus, and internal friction angle) decrease as the cyclic number of wetting and drying increases. Then, a damage variable, which can consider the combined influence of cyclic wetting-drying and loading, was first proposed based on test results. Further, an improved damage model, which considers the effect of cyclic wetting-drying on internal friction angle and the nonlinear deformation characteristics in the fissure closure stage, was established with statistical damage mechanics. The determination method for the parameters in the proposed damage model was also introduced. Finally, the effectiveness of proposed model was verified by comparing with experimental data. The verification indicates that the results from the improved model agree well with test results, and the improved model can enhance the prediction accuracy over the original model.
资助项目	National Nature Science Foundation of China[41602324] ; National Nature Science Foundation of China[51774267] ; Natural Science Foundation of Hubei Province[2019CFB535] ; China Scholarship Council[201804910219]
WOS研究方向	Engineering ; Oceanography ; Mining & Mineral Processing
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000573103000001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24854]
专题	中科院武汉岩土力学所
通讯作者	Liu, Xuewei
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Hubei, Peoples R China 2.Chongqing Univ, Sch Civil Engn, Dept Geotech Engn, Chongqing, Peoples R China 3.Wuhan Univ Sci & Technol, Sch Resources & Environm Engn, Dept Resource Engn, Wuhan, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xuewei,Liu, Quansheng,Huang, Shibing,et al. Effects of cyclic wetting-drying on the mechanical behavior and improved damage model for sandstone[J]. MARINE GEORESOURCES & GEOTECHNOLOGY,2020:11.
APA	Liu, Xuewei,Liu, Quansheng,Huang, Shibing,Liu, Bin,&Liu, Jiang.(2020).Effects of cyclic wetting-drying on the mechanical behavior and improved damage model for sandstone.MARINE GEORESOURCES & GEOTECHNOLOGY,11.
MLA	Liu, Xuewei,et al."Effects of cyclic wetting-drying on the mechanical behavior and improved damage model for sandstone".MARINE GEORESOURCES & GEOTECHNOLOGY (2020):11.