Dynamic response of cfg and cement-soil pile composite foundation in the operation stage

doi:10.12989/gae.2021.26.4.385

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Dynamic response of cfg and cement-soil pile composite foundation in the operation stage
	Cheng, Xuansheng 1,2; Chen, Jianchao 1; Cai, Xiangdong 1,2; Zhang, Xiaoyan 1,2; Gong, Lijun 1,2; Gu, Chengyue 3
刊名	Geomechanics and Engineering
	2021-08-25
卷号	26 期号:4 页码:385-399
关键词	Compaction Computer software Dynamic loads Earthquakes Embankments Foundations Numerical models Piles Railroads Seismic waves Soil cement Soils Cement-soil compaction pile Cement-soil pile CFG and cement-soil compaction pile Composite foundations Dynamic effects Earthquake action Operation stages Pile composite foundation Running-in Train loads
ISSN号	2005307X
DOI	10.12989/gae.2021.26.4.385
英文摘要	More and more attention is paid to the stability, safety and comfort of trains during its operation stage. When the train is running, in addition to the track gravity, it is also affected by the train load and earthquake, these dynamic effects will have a certain impact on the normal operation of the railway. However, the current research on the dynamic response of composite CFG and cement-soil compaction piles foundations under dynamic loads is rarely involved. Taking the composite foundation of Baoji-Lanzhou Passenger Dedicated Line as the research object, the dynamic response of the composite foundation under train load, seismic wave and train-seismic load is analyzed in detail by using numerical simulation software. The results show that under the train load, the maximum displacement occurs at the action position of the train load, and it is gradually reduced downward. The overall displacement is not large, and the influence on the operation of the train is little. Under earthquake action, the displacement is the largest at the bottom of subgrade, and gradually decreases upward, which has little effect on the top of embankment. Under the train-earthquake action, the displacement of subgrade bottom and embankment top is larger, and gradually decreases to the middle. It provides the corresponding theoretical basis for the same type of railway subgrade engineering. © 2021 Techno-Press, Ltd.
语种	英语
出版者	Techno-Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150894]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China; 3.China Railway 21st Bureau Group, Sixth Engineering Co., LTD, Lanzhou; 730070, China
推荐引用方式 GB/T 7714	Cheng, Xuansheng,Chen, Jianchao,Cai, Xiangdong,et al. Dynamic response of cfg and cement-soil pile composite foundation in the operation stage[J]. Geomechanics and Engineering,2021,26(4):385-399.
APA	Cheng, Xuansheng,Chen, Jianchao,Cai, Xiangdong,Zhang, Xiaoyan,Gong, Lijun,&Gu, Chengyue.(2021).Dynamic response of cfg and cement-soil pile composite foundation in the operation stage.Geomechanics and Engineering,26(4),385-399.
MLA	Cheng, Xuansheng,et al."Dynamic response of cfg and cement-soil pile composite foundation in the operation stage".Geomechanics and Engineering 26.4(2021):385-399.