Full-scale model testing of the dynamic response of lime-stabilized weathered red mudstone subgrade under railway excitation

doi:10.1016/j.soildyn.2019.105999

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	Full-scale model testing of the dynamic response of lime-stabilized weathered red mudstone subgrade under railway excitation
	Zhang, Chonglei 1,2; Jiang, Guanlu 3
刊名	SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
	2020-03-01
卷号	130 页码:105999
关键词	Subgrade Suitability Full-scale model Dynamic response Weathered red mudstone Cumulative settlement
ISSN号	0267-7261
DOI	10.1016/j.soildyn.2019.105999
产权排序	1
文献子类	Article
英文摘要	The suitability of lime-stabilized weathered red mudstone (LSWRM) as a subgrade filler material has not been comprehensively investigated. This study aims to determine the dynamic response and cumulative settlement characteristics of a newly designed LSWRM subgrade and evaluate the adaptability of LSWRM for use in high-speed railways (HSRs). Full-scale model testing of the LSWRM subgrade was performed using a cyclic loading apparatus. Under dynamic wheel loads and rainfall conditions, the distribution characteristics of the dynamic stress, dynamic displacement, and acceleration of the subgrade were monitored. The cumulative settlement law of the subgrade bed was analysed to determine the adaptability of LSWRM. Through a comparison with the standard Group A&B subgrade, the dynamic wheel load was identified as a main factor influencing the distributions of the dynamic parameters, whereas the influence of daily rainfall was limited. The dynamic parameters showed a saddle-shaped transverse distribution. Additionally, the appropriate thickness of the subgrade bed was evaluated based on the dynamic stress attenuation characteristics, and the cumulative settlement of the bottom layer accounted for 0.3% of the subgrade bed height. These dynamic parameters can meet the requirements of existing HSR specifications, and thus, filling the bottom layer with LSWRM is an appropriate option.
电子版国际标准刊号	1879-341X
资助项目	National Natural Science Foundation of China[51808542] ; National Natural Science Foundation of China[41761144077] ; Youth Innovation Promotion Association CAS[2019364]
WOS关键词	HIGH-SPEED RAILWAY ; BED MECHANICAL-BEHAVIOR ; TRANSITION ZONES ; DEFORMATION CHARACTERISTICS ; GROUND VIBRATION ; BALLASTED TRACK ; TRAIN ; SUBSTRUCTURE ; PREDICTION ; SETTLEMENT
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000512483200029
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/34045]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Jiang, Guanlu
作者单位	1.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; 2.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China; 3.Southwest Jiaotong Univ, MOE Key Lab High Speed Railway Engn, Sch Civil Engn, Chengdu 610031, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Chonglei,Jiang, Guanlu. Full-scale model testing of the dynamic response of lime-stabilized weathered red mudstone subgrade under railway excitation[J]. SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,2020,130:105999.
APA	Zhang, Chonglei,&Jiang, Guanlu.(2020).Full-scale model testing of the dynamic response of lime-stabilized weathered red mudstone subgrade under railway excitation.SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,130,105999.
MLA	Zhang, Chonglei,et al."Full-scale model testing of the dynamic response of lime-stabilized weathered red mudstone subgrade under railway excitation".SOIL DYNAMICS AND EARTHQUAKE ENGINEERING 130(2020):105999.