Elastoplastic coupling analysis of high-strength concrete based on tests and the Mohr-Coulomb criterion

doi:10.1016/j.conbuildmat.2020.119375

	Elastoplastic coupling analysis of high-strength concrete based on tests and the Mohr-Coulomb criterion
	Tu, Hongliang 1,2; Zhou, Hui 1,2; Lu, Jingjing 1,2; Gao, Yang 1,2; Shi, Linken 1,2
刊名	CONSTRUCTION AND BUILDING MATERIALS
	2020-09-20
卷号	255 页码:14
关键词	High-strength concrete Elastoplastic coupling Cyclic loading tests Acoustic emission (AE) monitoring Mohr-Coulomb criterion
ISSN号	0950-0618
DOI	10.1016/j.conbuildmat.2020.119375
英文摘要	With the development of material technology, high-strength concrete has been widely used in immersed, underwater and deep-buried tunnels, which exhibit elastic, brittle and plastic states under various stress conditions. However, the research on constitutive models of high-strength concrete is insufficient, especially regarding the elastoplastic coupling properties. Therefore, in this paper, an elastoplastic coupling analysis of high-strength concrete is conducted via conventional triaxial compression testing and cyclic loading testing. The failure process and the associated micro-cracking behaviour of the concrete during loading are monitored via the acoustic emission (AE) technique. By defining a confining stress function and plastic internal variables, the variations in the deformation parameters and the strength parameters with the plastic internal variables are analysed. With the increase in the plastic internal variables, the cohesion decreases, and the internal friction angle gradually increases. Based on the Mohr-Coulomb yield criterion, an improved cohesion weakening - friction strengthening (CWFS) model is proposed. The dilation angle of the concrete is smaller than the internal friction angle, and the non-associated flow rule should be adopted in the elastoplastic coupling model of the high-strength concrete. Finally, an elastoplastic coupling model is established based on the test results to provide an experimental and theoretical basis for numerical calculations and engineering applications. (C) 2020 Elsevier Ltd. All rights reserved.
资助项目	National Key R&D Program of China[2018YFC0809601] ; National Key R&D Program of China[2018YFC0809600] ; China Postdoctoral Science Foundation[2019M662754] ; Hubei Province Postdoctoral Science and Technology Project[G123] ; Hubei Province Natural Science Foundation innovation group[2018CFA013]
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000539386100062
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24329]
专题	中科院武汉岩土力学所
通讯作者	Zhou, Hui
作者单位	1.Univ Chinese Acad Sci, Inst Rock & Soil Mech, Room 209,Model Bldg, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Tu, Hongliang,Zhou, Hui,Lu, Jingjing,et al. Elastoplastic coupling analysis of high-strength concrete based on tests and the Mohr-Coulomb criterion[J]. CONSTRUCTION AND BUILDING MATERIALS,2020,255:14.
APA	Tu, Hongliang,Zhou, Hui,Lu, Jingjing,Gao, Yang,&Shi, Linken.(2020).Elastoplastic coupling analysis of high-strength concrete based on tests and the Mohr-Coulomb criterion.CONSTRUCTION AND BUILDING MATERIALS,255,14.
MLA	Tu, Hongliang,et al."Elastoplastic coupling analysis of high-strength concrete based on tests and the Mohr-Coulomb criterion".CONSTRUCTION AND BUILDING MATERIALS 255(2020):14.