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A platform for research: civil engineering, architecture and urbanism
Pile-Soil Stress Ratio of a Composite Foundation with the Driven Cast-in-Place Y Piles under Embankment Load
A new driven cast-in-place Y pile was developed according to the innovative design concept of Y pile and the traditional construction technology of driven cast-in-place pile in China. In this paper the pile-soil stress ratio was calculated based on the hypothesis that the pile body was modeled as an equivalent constant section elastic bar. The influence factors and variation of the pile-soil stress were analyzed. Then the theoretical results were compared with the field data obtained from a ground improvement project for an expressway bridge abutment using driven cast-in-place Y piles. According to the field static loading test and theoretical analysis, the driven cast-in-place Y pile can improve the bearing capacity significantly with the same engineering quantity. It can be indicated that Y pile is either a friction-based friction pile or end-support friction pile and has a great bearing capacity. Besides the Y pile composite foundation has better bearing characteristics while the foundation settlement and post-construction settlement of embankment are substantially reduced. The results from this study can provide reference for the future design of similar composite foundation.
Pile-Soil Stress Ratio of a Composite Foundation with the Driven Cast-in-Place Y Piles under Embankment Load
A new driven cast-in-place Y pile was developed according to the innovative design concept of Y pile and the traditional construction technology of driven cast-in-place pile in China. In this paper the pile-soil stress ratio was calculated based on the hypothesis that the pile body was modeled as an equivalent constant section elastic bar. The influence factors and variation of the pile-soil stress were analyzed. Then the theoretical results were compared with the field data obtained from a ground improvement project for an expressway bridge abutment using driven cast-in-place Y piles. According to the field static loading test and theoretical analysis, the driven cast-in-place Y pile can improve the bearing capacity significantly with the same engineering quantity. It can be indicated that Y pile is either a friction-based friction pile or end-support friction pile and has a great bearing capacity. Besides the Y pile composite foundation has better bearing characteristics while the foundation settlement and post-construction settlement of embankment are substantially reduced. The results from this study can provide reference for the future design of similar composite foundation.
Pile-Soil Stress Ratio of a Composite Foundation with the Driven Cast-in-Place Y Piles under Embankment Load
Wu, Yue-dong (author) / Liu, Han-long (author) / Chen, Yong-hui (author) / Zheng, Shi-hua (author)
GeoHunan International Conference 2011 ; 2011 ; Hunan, China
2011-05-16
Conference paper
Electronic Resource
English
| British Library Conference Proceedings | 2011
| Trans Tech Publications | 2014
| British Library Conference Proceedings | 2014