Swelling characteristics of andesite foundation induced by water immersion and their influence on ballastless track subgrade

doi:10.1007/s11629-019-5773-4

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 > Journal of Mountain Science > Journal of Mountain Science-2020 > Vol17 No.4

	Swelling characteristics of andesite foundation induced by water immersion and their influence on ballastless track subgrade
	Duan Jun-yi; Yang Guo-lin; Hu Min; Lei Xiao-qin; Lin Yu-liang
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2020
卷号	17 期号:4 页码:1001-1012
关键词	High-speed railway Expansive andesite Heave deformation Lateral swelling pressure Inclination angle Deformation attenuation
ISSN号	1672-6316
DOI	10.1007/s11629-019-5773-4
文献子类	Article
英文摘要	To study the mechanical and deformation characteristics of ballastless track subgrade filled with micro-expansion fillers in a water-immersed environment, a physical model of ballastless track subgrade was constructed on a 1:2 scale with expansive andesite fillers. A water immersion test was carried out to model the soaking of the expansive soil foundation caused by rising groundwater. The swelling behaviors of the foundation and their influences upon the mechanics and deformations of the subgrade were analyzed. The lateral swelling pressure of the foundation and the heave of the subgrade obviously increased due to the water immersion, and the values were closely related to the overlying load and lateral restraint. The heave deformation of the double-line ballastless track subgrade showed significant nonuniformity along the lateral direction, causing the track slab to incline with a maximum inclination angle of 1.55x10-3 deg. The heave of the foundation caused a heave in subgrade, but this transferred heave was significantly attenuated. The attenuation rate of the heave at the midline of the track slab was up to 13.38%. The attenuation characteristic can be fully utilized for the anti-heave deformation measures of railway subgrade in expansive soil areas.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000525174500017
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46808]
专题	Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.4
推荐引用方式 GB/T 7714	Duan Jun-yi,Yang Guo-lin,Hu Min,et al. Swelling characteristics of andesite foundation induced by water immersion and their influence on ballastless track subgrade[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(4):1001-1012.
APA	Duan Jun-yi,Yang Guo-lin,Hu Min,Lei Xiao-qin,&Lin Yu-liang.(2020).Swelling characteristics of andesite foundation induced by water immersion and their influence on ballastless track subgrade.JOURNAL OF MOUNTAIN SCIENCE,17(4),1001-1012.
MLA	Duan Jun-yi,et al."Swelling characteristics of andesite foundation induced by water immersion and their influence on ballastless track subgrade".JOURNAL OF MOUNTAIN SCIENCE 17.4(2020):1001-1012.