Semianalytical Solution for Dynamic Responses of Railway Track System on Unsaturated Poroelastic Half-Space Subjected to Moving Trainload

doi:10.1061/(ASCE)GM.1943-5622.0001955

	Semianalytical Solution for Dynamic Responses of Railway Track System on Unsaturated Poroelastic Half-Space Subjected to Moving Trainload
	Tang, Chuxuan 1,2; Lu, Zheng 1,3; Yao, Hailin 1; Guo, Shuan 4; Huang, Xiangqun 4; Liu, Jie 1
刊名	INTERNATIONAL JOURNAL OF GEOMECHANICS
	2021-03-01
卷号	21 期号:3 页码:10
关键词	Unsaturated ground Dynamic response Fourier transform Moving trainload Railway track
ISSN号	1532-3641
DOI	10.1061/(ASCE)GM.1943-5622.0001955
英文摘要	A track-unsaturated ground model was proposed to study the dynamic responses of the unsaturated subgrade induced by moving trainloads. The subgrade was modeled by an unsaturated poroelastic half-space, and the railway track system comprises a rail, sleepers, and ballast. The double Fourier transform was applied to solve the governing equations of the entire system in the frequency domain. The semianalytical results in the time domain were further obtained using the fast inverse Fourier transform. The effects of saturation, train speeds, and intrinsic permeability of soil on the dynamic responses were studied in both the time and frequency domain. It was found that the effects of saturation and train speed on the responses of displacement, acceleration, and pore-water pressure are significant. For low saturation, the vertical displacement response of unsaturated half-space is similar to that of the elastic half-space, and the intrinsic permeability has little effect. While for high saturation, the amplitude of vertical displacement increases with the increase of intrinsic permeability of the soil. (c) 2021 American Society of Civil Engineers.
资助项目	Outstanding Youth Foundation of Hubei Province[2017CFA056] ; National Natural Science Foundation of China[41672312] ; National Natural Science Foundation of China[41972294]
WOS研究方向	Engineering
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000613513400017
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25676]
专题	中科院武汉岩土力学所
通讯作者	Lu, Zheng
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Hubei Key Lab Geoenvironm Engn, Wuhan 430071, Peoples R China 4.Hunan Commun Res Inst Co Ltd, Changsha 410015, Peoples R China
推荐引用方式 GB/T 7714	Tang, Chuxuan,Lu, Zheng,Yao, Hailin,et al. Semianalytical Solution for Dynamic Responses of Railway Track System on Unsaturated Poroelastic Half-Space Subjected to Moving Trainload[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2021,21(3):10.
APA	Tang, Chuxuan,Lu, Zheng,Yao, Hailin,Guo, Shuan,Huang, Xiangqun,&Liu, Jie.(2021).Semianalytical Solution for Dynamic Responses of Railway Track System on Unsaturated Poroelastic Half-Space Subjected to Moving Trainload.INTERNATIONAL JOURNAL OF GEOMECHANICS,21(3),10.
MLA	Tang, Chuxuan,et al."Semianalytical Solution for Dynamic Responses of Railway Track System on Unsaturated Poroelastic Half-Space Subjected to Moving Trainload".INTERNATIONAL JOURNAL OF GEOMECHANICS 21.3(2021):10.