Investigation of concrete pavement cracking under multi-head impact loading via the continuum-discontinuum element method

doi:10.1016/j.ijimpeng.2019.103410

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Investigation of concrete pavement cracking under multi-head impact loading via the continuum-discontinuum element method
	Zhang QL 2; Zhi ZH 2; Feng C(冯春)1; Cai YC 2; Pang GH 2; Yue JC 2
刊名	INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
	2020
卷号	135 页码:13
关键词	Concrete pavement Mesoscopic simulation Three-dimensional aggregate Cohesive model Impact cracking
ISSN号	0734-743X
DOI	10.1016/j.ijimpeng.2019.103410
通讯作者	Yue Jinchao(yuejc@zzu.edu.cn)
英文摘要	To accurately and effectively simulate the cracking and crushing process of concrete pavement under multi-head impact loading, a large-scale road 3D model that considers concrete pavement, subgrade and soil foundation is established. Then, the discontinuum element method is applied in the concrete pavement's potential fracture area, and the continuum element method is applied in the hammer body and the non-fracture area of concrete pavement. A cohesive model is applied to the element interface of the concrete fracture area, and a contact element is used to deal with the interaction between the hammer body and the pavement. Mesoscopic simulations on the impact cracking process of concrete pavement are conducted by considering the element shapes, three-dimensional aggregates, impact locations and impact velocities. Finally, impact testing and core drilling are conducted in the field to evaluate the simulation results. The results demonstrate that the cracking and crushing process of concrete pavement can be quickly simulated via the continuum-discontinuum element method (CDEM), and the simulation results agree with the results of the in-site tests. The concrete pavement model that is meshed by tetrahedral elements and includes aggregates can result in a higher calculation efficiency and superior impact cracking performance. Concrete pavement is severely crushed in the impact contact area, closed quadrangle crack surfaces form along the inside of four hammerheads, and tension crack surfaces mainly propagate along the long axis of the rectangular hammerheads. The impact locations mainly affect the crack distribution of the concrete pavement, and the impact velocities determine the fracture degree. As the impact velocity increases, the impact force linearly changes, whereas the fracture degree varies according to a power function. Overall, the influence of the impact velocities on concrete cracking is greater than the impact locations.
分类号	一类
资助项目	Henan Provincial Department of Transportation[2018J4] ; National Key Research and Development Program of China[2018YFC1505504] ; National Natural Science Foundation of China[51708513]
WOS关键词	MODE-II FRACTURE ; SLABS ; RESISTANCE ; AGGREGATE ; BEHAVIOR ; HIGHWAY ; HAMMER ; WEIGHT
WOS研究方向	Engineering ; Mechanics
语种	英语
WOS记录号	WOS:000496341500009
资助机构	Henan Provincial Department of Transportation ; National Key Research and Development Program of China ; National Natural Science Foundation of China
其他责任者	Yue Jinchao
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/81388]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.Zhengzhou Univ, Sch Water Conservancy Engn, Zhengzhou 450001, Henan, Peoples R China;
推荐引用方式 GB/T 7714	Zhang QL,Zhi ZH,Feng C,et al. Investigation of concrete pavement cracking under multi-head impact loading via the continuum-discontinuum element method[J]. INTERNATIONAL JOURNAL OF IMPACT ENGINEERING,2020,135:13.
APA	Zhang QL,Zhi ZH,冯春,Cai YC,Pang GH,&Yue JC.(2020).Investigation of concrete pavement cracking under multi-head impact loading via the continuum-discontinuum element method.INTERNATIONAL JOURNAL OF IMPACT ENGINEERING,135,13.
MLA	Zhang QL,et al."Investigation of concrete pavement cracking under multi-head impact loading via the continuum-discontinuum element method".INTERNATIONAL JOURNAL OF IMPACT ENGINEERING 135(2020):13.