天然饱和黏土中新、旧桩荷载–沉降关系研究

doi:10.13722/j.cnki.jrme.2015.1769

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Abstract Due to the reconsolidation after pile installation，mechanical properties of soil around old piles are extremely different from soil around new piles. Considering pile-jacking influence and initial anisotropy properties of the natural clay and adopting an analytical solution to elastoplastic cavity expansion due to the pile jacking-in，the mechanical characteristics of soil around the new and old piles are subsequently analyzed in detail. On this basis，load transfer models are proposed for new and old piles respectively according to the different mechanical properties in this paper. The theoretical solution is verified by the field test，and the results show that the presented methods predicted accurately the load-settlement relationship of the new and old piles.

Key words： foundation engineering new and old piles anisotropy pile-jacking influence softening model field test

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	Articles by authors
	LI Jingpei1
	2
	ZHANG Lingxiang1
	2
	LI Lin1
	2
	LIU Zhenxing3

Cite this article:

LI Jingpei1,2,ZHANG Lingxiang1, et al. Analysis of load-settlement relationship of new and old piles in natural saturated clays[J]. , 2016, 35(9): 1906-1913.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.1769 OR http://www.rockmech.org/EN/Y2016/V35/I9/1906

[11]	王戍平. 深厚软土中PHC长桩的时效性试验研究[J]. 岩土工程学报，2003，25(2)：239-241.(WANG Maoping. Study on time effect of PHC open ended pile in deep soft soil[J]. Chinese Journal of Geotechnical Engineering，2003，25(2)：239-241.(in Chinese))
[29]	SCHMERTMANN J H. The mechanical aging of soils[J]. Journal of Geotechnical Engineering，1991，117(9)：1 288-1 330. " target="_blank">
[9]	SAMSON L，AUTHIER J. Change in pile capacity with time：case histories[J]. Canadian Geotechnical Journal，2011，23(2)：174-180. " target="_blank">
[7]	FLAATE K. Effects of pile driving in clays[J]. Canadian Geotechnical Journal，1972，9(9)：81-88. " target="_blank">
[6]	RANDOLPH M F. Science and empiricism in pile foundation design[J]. Géotechnique，2003，53(10)：847-875. " target="_blank">
[13]	张雪松，屠毓敏，龚晓南，等. 软黏土地基中挤土桩沉降时效性分析[J]. 岩石力学与工程学报，2004，23(19)：3 365-3 369.(ZHANG Xuesong，TU Yumin，GONG Xiaonan，et al. Time-dependency analysis of soil compaction pile in soft clay ground[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(19)：3 365-3 369.(in Chinese)) " target="_blank">
[15]	CAO L F，TEH C I，CHANG M F. Undrained cavity expansion in modified cam clay I：theoretical analysis[J]. Géotechnique，2001，51(4)：323-334. " target="_blank">
[18]	KRAFT L M，FOCHT J A，AMERASINGHE S F. Friction capacity of piles driven into clay[J]. Journal of the Geotechnical Engineering Division，2014，107(11)：1 521-1 541. " target="_blank">
[20]	LI J，TAN Y，LIANG F. A modified analysis method for the nonlinear load transfer behaviour of axially loaded piles[J]. Journal of Civil Engineering，2012，16(3)：325-333. " target="_blank">
[22]	RANDOLPH M F，WROTH C P. Analysis of deformation of vertically loaded piles[J]. Journal of Geotechnical and Geoenvironmental Engineering，2015，104(12)：1 465-1 488. " target="_blank">
[24]	WANG Z，XIE X，WANG J. A new nonlinear method for vertical settlement prediction of a single pile and pile groups in layered soils[J]. Computers and Geotechnics，2012，45(45)：118-126. " target="_blank">
[27]	CHOW Y K. Analysis of vertically loaded pile groups[J]. International Journal for Numerical and Analytical Methods in Geomechanics，1986，10(1)：59-72. " target="_blank">
[2]	夏建中，罗战友，张矢舟. 软黏土中压桩承载力的时效性分析与预测[J]. 岩土力学，2006，27(增2)：793-796.(XIA Jianzhong，LUO Zhanyou，ZHANG Shizhou. Time effect analyses and prediction of ultimate bearing capacity of jacked pile in clay[J]. Rock and Soil Mechanics，2006，27(Supp.2)：793-796.(in Chinese)) " target="_blank">
[4]	CARTER J P，RANDOLPH M F，WROTH C P. Stress and pore pressure changes in clay during and after the expansion of a cylindrical cavity[J]. International Journal for Numerical and Analytical Methods in Geomechanics，1979，3(4)：305-322. " target="_blank">
[8]	TAVENAS F，AUDY R. Limitations of the driving formulas for predicting the bearing capacities of piles in sand[J]. Canadian Geotechnical Journal，1972，9(1)：47-62. " target="_blank">
[1]	叶为民，黄雨，唐益群，等. 饱和软土中打入式预制桩单桩承载力的时效性[J]. 岩土力学，2000，21(4)：367-369.(YE Weimin，HUANG Yu，TANG Yiqun，el at. Time-effect of bearing capacity of driven pile in saturated soil[J]. Rock and Soil Mechanics，2000，21(4)：367-369.(in Chinese)) " target="_blank">
[3]	张明义，时伟，王崇革，等. 静压桩极限承载力的时效性[J]. 岩石力学与工程学报，2007，26(增2)：2 601-2 604.(ZHANG Mingyi，SHI Wei，WANG Chongge，et al. Time effect on the ultimate bearing capacity of static pressed pile[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.2)：2 601-2 604.(in Chinese)) " target="_blank">
[5]	BASU P，PREZZI M，SALGAGO R，et al. Shaft resistance and setup factors for pile jacked in clay[J]. Journal of Geotechnical and Geoenvironental Engineering，2014，140(3)：1-16. " target="_blank">
[10]	李雄，刘金砺. 饱和软土中预制桩承载力时效的研究[J]. 岩土工程学报，1992，(4)：9-16.(LI Xiong，LIU Jinli. Time effect on the bearing capacity of precast pile in saturated clay[J]. Chinese Journal of Geotechnical Engineering，1992，(4)：9-16.(in Chinese)) " target="_blank">
[12]	黄雨，叶为民，唐益群，等. 打入桩荷载-沉降性状的时间效应分析[J]. 岩石力学与工程学报，2006，25(8)：1 710-1 713.(HUANG Yu，YE Weimin，TANG Yiqun，et al. Analysis of time effect on load-settlement behavior of driven piles[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(8)：1 710-1 713.(in Chinese)) " target="_blank">
[14]	LI L，LI J P，SUN D A. Anisotropically elasto-plastic solution to undrained cylindrical cavity expansion in K0-consolidated clay[J]. Computers and Geotechnics，2016，73(1)：83-90. " target="_blank">
[16]	WOOD D M. Soil behaviour and critical state soil mechanics[M]. Cambridge，U K：Cambridge University Press，1990：112-138. " target="_blank">
[25]	VARDANEGA P J，WILLIAMSON M G，BOLTON M D. Bored pile design in stiff clay II：mechanisms and uncertainty[J]. Geotechnical Engineering，2012，165(4)：233-246. " target="_blank">
[17]	KRAFT L M，RAY R P，KAGAWA T. Theoretical T-Z curves[J]. Journal of Geotechnical and Geoenvironmental Engineering，1981，107(11)：1 543-1 561. " target="_blank">
[19]	ZHANG Q Q，ZHANG Z M. A simplified nonlinear approach for single pile settlement analysis[J]. Canadian Geotechnical Journal，2012，49(11)：1 256-1 266. " target="_blank">
[21]	RANDOLPH M F，WROTH C P. An analysis of the vertical deformation of pile groups[J]. Géotechnique，1979，29(4)：423-439. " target="_blank">
[23]	赵春风，鲁嘉，孙其超，等. 大直径深长钻孔灌注桩分层荷载传递特性试验研究[J]. 岩石力学与工程学报，2009，28(5)：1 020-1 026. (ZHAO Chunfeng，LU Jia，SUN Qichao，el at. Experimental study of load transmission property of large-diameter bored cast-insitu deep and long pile in different soil layers[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(5)：1 020-1 026.(in Chinese)) " target="_blank">
[26]	MEYERHOF G G. Bearing capacity and settlement of pilefoundations[J]. Journal of the Geotechnical Engineering Division，1976，102(3)：195-228. " target="_blank">
[28]	LEE K M，XIAO Z R. A simplified nonlinear approach for pile group settlement analysis in multilayered soils[J]. Canadian Geotechnical Journal，2011，38(5)：1 063-1 080. " target="_blank">