NDLI: In-Situ Test of Pile-Soil Stress Ratio of CFG Pile-Net Composite Foundation in Beijing-Shanghai High-Speed Railway

Content Provider	IEEE Xplore Digital Library
Author	Jun-cheng Zeng Ji-wen Zhang Yong-ming Tu Xiao-dong Tong
Copyright Year	2009
Abstract	Pile-soil stress ratio is one of important parameters in the design of high-speed railway composite foundation. The full scale in-situ test in trial section of Beijing-Shanghai high-speed railway by adopting composite foundation of CFG pile-net (geogrid) with preloading was carried out. The magnitude of the pile-cap head vertical stress, soil stress among piles, pile-soil stress ratio and their variations with filling height and consolidation time were measured. The variation of pile-soil stress ratios with subgrade cross-section was analyzed. The measured results show that the pile-soil stress ratio is closely related to filling height and changes a little with consolidation time when the filling height is kept constant. In the central area of subgrade, the pile-soil stress ratios are in the range of 5 to 6. And the CFG piles (caps) and soil in composite foundation can together play a role in the whole cross-section to bear the filler load. The conclusions can provide valuable preference for the design of the CFG pile-net composite foundation under embankment in China high-speed railway.
Starting Page	638
Ending Page	640
File Size	745594
Page Count	3
File Format	PDF
ISBN	9780769538044
DOI	10.1109/ICICTA.2009.619
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-10
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	pile-net Design automation Levee composite foundation pile-soil stress ratio CFG high-speed railway Time measurement Soil measurements Automatic testing Rail transportation Filling Plastics Civil engineering Stress measurement
Content Type	Text
Resource Type	Article

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