Engineering characteristics test on pile-net composite foundation in loess areas

doi:10.1680/jgeen.20.00042

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	Engineering characteristics test on pile-net composite foundation in loess areas
	Cheng, Xuansheng; Cai, Xiangdong; Zha, Wanxi; Zhou, Yingchao; Gong, Lijun
刊名	Proceedings of the Institution of Civil Engineers: Geotechnical Engineering
	2022-02-01
卷号	175 期号:1 页码:3-14
关键词	Embankments Fly ash Geosynthetic materials Geotechnical engineering Piles Pressure effects Railroad plant and structures Railroad transportation Retaining walls Sediments Soil cement Soil mechanics Soils Cement-soil compaction pile Earth pressure Geogrids Gravel pile Loess area Pile net composite foundations Pile-soil Road & highway Soil arching effects Stresses analysis
ISSN号	1353-2618
DOI	10.1680/jgeen.20.00042
英文摘要	To study the variation in pile-soil stress and settlement of a pile-net composite foundation in a collapsible loess area, a test section of the Gansu-Ningxia section of the Yinxi high-speed railway was analysed using an earth pressure box, a liquid level settlement system and a single-point settlement instrument. The monitoring results showed that for, the pile-net composite foundation, the earth pressure in the embankment was significantly affected by the geogrid and the soil arching effect. The geogrid enhanced the soil arching effect between the piles, resulting in an increase in earth pressure between the piles on the embankment. With an increase in the embankment filling height, the pile-soil stress ratio and load sharing ratio of the cement-fly ash-gravel (CFG) pile and cement-soil compaction (CSC) pile increased gradually and the pile-soil stress ratio of the CFG pile was greater than that of the CSC pile. The settlement patterns of the CFG pile top, CSC pile top and the soil between the piles was saddle-shaped. The settlement of the CSC pile was found to be much less than that of the CFG pile. © 2020 ICE Publishing: All rights reserved.
语种	英语
出版者	ICE Publishing
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158025]
专题	土木工程学院
作者单位	W. Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou, China
推荐引用方式 GB/T 7714	Cheng, Xuansheng,Cai, Xiangdong,Zha, Wanxi,et al. Engineering characteristics test on pile-net composite foundation in loess areas[J]. Proceedings of the Institution of Civil Engineers: Geotechnical Engineering,2022,175(1):3-14.
APA	Cheng, Xuansheng,Cai, Xiangdong,Zha, Wanxi,Zhou, Yingchao,&Gong, Lijun.(2022).Engineering characteristics test on pile-net composite foundation in loess areas.Proceedings of the Institution of Civil Engineers: Geotechnical Engineering,175(1),3-14.
MLA	Cheng, Xuansheng,et al."Engineering characteristics test on pile-net composite foundation in loess areas".Proceedings of the Institution of Civil Engineers: Geotechnical Engineering 175.1(2022):3-14.