桩承式加筋路堤桩体荷载分担比计算

doi:10.13722/j.cnki.jrme.2016.0456

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Abstract

To address the influence of multiple layers of reinforcement on geosynthetics reinforced pile supported (GRPS) embankment ，based on the hypothesis of soil arching and strain of geosynthetics，the formula was deduced for calculating the pile efficacy in this paper. Firstly，based on limit-stress equilibrium of soil arching and two-dimensional soil arching model with concentric arches ，the theory formula was deduced for calculating the pile efficacy upon geosynthetics. Secondly，the shape of geosynthetics deformation between pile caps was assumed as arc，the contribution of deformation of geosynthetics upon pile caps to strain of geosynthetics between pile caps was considered，and then the calculation formula for strain of geosynthetics was deduced，which is well suited for GRPS embankment with sparse piles and large pile caps. Thirdly，the deformation of bottom geosynthetics induced by filling below geosynthetics and soil stress between piles was estimated，and then the mathematical relationship of deformation between the bottom geosynthetics and the others was proposed. Lastly，tensile forces and vertical components of geosyntheticswere calculated by aforementioned strains，and the formula was deduced for calculating the pile efficacy under geosynthetics. This method could be applied to plie supported embankment reinforced by single or multiple layers of geosynthetics. The calculation results were shown to provide satisfactory agreements with testing datum.

Key words： embankment engineering geosynthetics reinforced pile supported embankment soil arching effect geosynthetics strain pile efficacy

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	Articles by authors
	QIAN Jinsong1
	BAI Mo1
	LUO Xin1
	FU Yuwen2

Cite this article:

QIAN Jinsong1,BAI Mo1,LUO Xin1, et al. Pile efficacy calculation of geosynthetics reinforced pile supported embankment[J]. , 2017, 36(S1): 3587-3595.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.0456 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/IS1/3587

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