砂土中水平受荷斜桩的p-y曲线及其应用

doi:10.13722/j.cnki.jrme.2017.1260

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Abstract In order to obtain the p-y curves of laterally loaded piles in sand，a series of model tests including four battered piles and one plumbed pile embedded in the medium-dense dry sand were conducted and the relationship between the soil resistance p，and the lateral displacement y，of pile shaft was obtained by fitting the model test results. In addition，the stress-strain ( - ) curves for the sand used in the model tests were obtained based on the tri-axial compression test. A new p-y curve for laterally loaded batter piles was proposed according to the relationship between the dimensionless p-y expression and the dimensionless - curves. The methods to determine the parameters in the p-y curve were also given. The comparisons between the calculated results based on the p-y curve proposed，the model test results and the centrifuge model tests from references demonstrated that the p-y curve proposed for the laterally loaded batter piles was reasonable and can be used to describe the complex compression and shear behavior between the inclined piles and the surrounding soils. Finally，The p-y curves were used to analyze the behaviors of the inclined piles under different conditions and it was found that the lateral displacements and the maximum bending moments induced in the batter piles with the head fixed are less than that of batter piles with the head free. The existence of the vertical load on the pile head can reduce the lateral displacement and the bending moment in the negative batter piles but increase that in the positive batter piles. The increment of the stiffness of inclined piles can effectively reduce the lateral displacements and the maximum bending moment of the piles.

Key words： soil mechanics batter piles p-y curves model test

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	Articles by authors
	CAO Weiping1
	XIA Bing1
	ZHAO Min2
	GE Xin1
	3

Cite this article:

CAO Weiping1,XIA Bing1,ZHAO Min2, et al. p-y curves of laterally loaded batter piles in sand and its application[J]. , 2018, 37(3): 743-753.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2017.1260 OR http://www.rockmech.org/EN/Y2018/V37/I3/743

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