考虑天然黏土应力各向异性的静压沉桩效应研究

doi:10.13722/j.cnki.jrme.2015.1337

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Abstract The Cam-clay model modified for the K0-consolidated anisotropic clay，which can properly describe the initial stress anisotropy and stress-induced anisotropy of the natural saturated clay，was used to derive a theoretical solution to the cavity expansion due to pile jacking-in. The method of calculating the resistance of pile sinking is presented. To verify the validity of the theoretical solution，a centrifuge test of pile jacking-in was carried out in K0 consolidated clay. The soil stress，pore water pressure and pile-sinking resistance were studied in detail by comparing the measured data with the predicted data. The results show that the proposed mechanical model reflects the pile jacking-in effects properly due to the intrinsic properties of the natural clay being sufficiently considered. The proposed solution provides a theoretical base for pile construction and bearing capacity determination.

Key words： pile foundation pile jacking-in anisotropy earth pressure pore water pressure pile-sinking resistance centrifuge model test

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	Articles by authors
	LI Lin1
	2
	LI Jingpei1
	2
	SUN Dean3
	YUE Zhuwen1
	2

Cite this article:

LI Lin1,2,LI Jingpei1, et al. Pile jacking-in effects considering stress anisotropy of natural clay[J]. , 2016, 35(5): 1055-1064.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.1337 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/I5/1055

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