干旱区生态环境知识资源中心(Arid): Research on dynamic mechanical behavior of ballast bed in windblown sand railway based on dimensional analysis

Arid

DOI	10.1016/j.conbuildmat.2021.123052
	Research on dynamic mechanical behavior of ballast bed in windblown sand railway based on dimensional analysis
	Zhang, Zhihai; Xiao, Hong; Wang, Meng; Zhang, Moyan; Wang, Jiaqi
通讯作者	Xiao, H (corresponding author), Beijing Jiaotong Univ, Beijing Key Lab Track Engn, Beijing 100044, Peoples R China.
来源期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
EISSN	1879-0526
出版年	2021
卷号	287
英文摘要	Railway operation is faced with windblown sand hazards in desert areas. In order to study the influence of sand intrusion on dynamic mechanical behavior of railway ballast bed, a multi-scale discrete element model of sleeper-ballast bed-surface layer of subgrade has been established with the method of step filling-particle replacement. The vibration acceleration of the ballast bed and the dynamic displacement of sleeper field tests in the section with severe sandstorm have carried out to verify the correctness of discrete element analysis model. The scale invariance of the linear contact model and the rationality of the scaling of the sand size are explained by the dimensional analysis method. The results show that the sand intrusion reduces the vibration of ballast bed. When the sand content reaches 30%, the vibration and elastic deformation of ballast bed decrease by 94.2% and 63.2% respectively. The invasion of sand can reduce the deformation of the surface layer of subgrade, and the maximum reduction is 53.3%. Therefore, it is necessary to pay attention to the service state of ballast bed with sand content of 30% in windblown sand area, and make the maintenance plan reasonably. (c) 2021 Elsevier Ltd. All rights reserved.
英文关键词	Ballast bed Irregular sand Discrete element method Vibration response Elastic-plastic deformation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000647456700006
WOS关键词	DISCRETE ; CONTAMINATION ; SIMULATION ; VIBRATION ; MODEL ; SIZE
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349893
作者单位	[Zhang, Zhihai; Xiao, Hong; Zhang, Moyan; Wang, Jiaqi] Beijing Jiaotong Univ, Beijing Key Lab Track Engn, Beijing 100044, Peoples R China; [Zhang, Zhihai; Xiao, Hong; Zhang, Moyan; Wang, Jiaqi] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China; [Wang, Meng] China Acad Railway Sci Corp Ltd, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhihai,Xiao, Hong,Wang, Meng,et al. Research on dynamic mechanical behavior of ballast bed in windblown sand railway based on dimensional analysis[J],2021,287.
APA	Zhang, Zhihai,Xiao, Hong,Wang, Meng,Zhang, Moyan,&Wang, Jiaqi.(2021).Research on dynamic mechanical behavior of ballast bed in windblown sand railway based on dimensional analysis.CONSTRUCTION AND BUILDING MATERIALS,287.
MLA	Zhang, Zhihai,et al."Research on dynamic mechanical behavior of ballast bed in windblown sand railway based on dimensional analysis".CONSTRUCTION AND BUILDING MATERIALS 287(2021).