大厚度湿陷性黄土地层浸水条件下承载桩基对近距隧道的影响研究

doi:10.13722/j.cnki.jrme.2016.1312

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Abstract The adjacent tunnel is influenced by pile foundation obviously due to the additional load，particularly in the area with loess layer of great thickness which is sensitive to water content. A serious of tests with the modified centrifuge testing equipment were conducted to systematically investigate the influence of the pile foundation to the adjacent tunnel. The influence factors considered in the tests are the pile foundation load，the pile-tunnel distance and the basement immersion depth. The soil around the pile was found to reduce the load-transfer effect，which led to the lining stress redistribution. The bigger the pile load，the more obvious the reduction effect. The bearing ability of the basement was reduced due to the water immersion，which increased the load-transfer between the pile and tunnel. The influence of pile to tunnel was decreased with the increasing of pile-tunnel distance. The bending moment of tunnel was evenly distributed when the pile load was small. The tunnel was distort with the pile load was bigger and was distort more as the pile load increased. The effect was obvious when the pile-tunnel distance was short. When the immersion depth in basement was small，the influence of pile to tunnel was weak due to the load-transfer effect，but the influence was more and more obvious with the increasing of immersion depth in basement. When the ratios of pile-tunnel distance to diameter of tunnel was 1，the vertical displacement reached 16.7 mm，the horizontal displacement reached 3.2 mm under the pile load increasing，and both reduced with the increasing of pile-tunnel distance. The tunnel displacement reduced with the decreasing of immersion depth in basement. The basement immersion affected mainly the vertical displacement. The effect of basement immersion to tunnel was smaller than pile-tunnel distance and pile load.

Key words： tunnelling engineering big-thick collapsible loess basement water immersion pile foundation centrifuge testing

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	Articles by authors
	ZHANG Yuwei1
	WENG Musheng2

Cite this article:

ZHANG Yuwei1,WENG Musheng2. Influence of pile foundation to adjacent tunnel with water immersion in collapsible loess layer of great thickness[J]. , 2017, 36(8): 2040-2050.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2016.1312 OR http://www.rockmech.org/EN/Y2017/V36/I8/2040

[10]	徐云福，王立峰. 近邻桩基施工对城市地铁隧道的影响分析[J]. 岩土力学，2015，36(增2)：577-582.(XU Yunfu，WANG Lifeng. Analysis of effects on city metro tunnel due to adjacent pile foundation construction[J]. Rock and Soil Mechanics，2015，36(Supp.2)：577-582.(in Chinese))
[11]	安建永，项彦勇，贾永州. 既有桩基荷载对邻近浅埋隧道开挖效应及支护内力影响的研究[J]. 岩土力学，2014，35(4)：927-932.(AN Jianyong，XIANG Yanyong，JIA Yongzhou. Study of influences of existing pile foundation loads on adjacent tunnel excavation and internal forces of primary support[J]. Rock and Soil Mechanics，2014， 35(4)：927-932.(in Chinese))
[12]	MROUEH H，SHAHROUR I. Three-dimensional finite element analysis of the interaction between tunneling and pile foundations[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2002，26(3)：217-230. " target="_blank">
[14]	LOGANATHAN N，POULOS H G，STEWART D P. Centrifuge model testing of tunnelling-induced ground and pile deformations[J]. Géotechnique，2000，50(3)：283-294. " target="_blank">
[5]	翁效林，孙腾，冯莹. 桩基础承载过程对近距离地铁隧道影响机制分析[J]. 哈尔滨工业大学学报，2016，48(3)：138-142. (WENG Xiaolin，SUN Teng，FENG Ying. Influence of loading pile foundation on existing neighboring subway tunnel[J]. Journal of Harbin Institute of Technology，2016，48(3)：138-142.(in Chinese))
[6]	BOLTON M D，STEWART D I. The effect on propped diaphragm walls of rising groundwater in stiff clay[J]. Geotechnique，1994，44(1)：111-127. " target="_blank">
[1]	王剑晨，张顶立，张成平，等. 北京地区浅埋暗挖法下穿施工既有隧道变形特点及预测[J]. 岩石力学与工程学报，2014，33(5)：947-956.(WANG Jianchen，ZHANG Dingli，ZHANG Chengping，et al. Deformation characteristics of existing tunnels induced by excavation of new shallow tunnel in Beijing[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(5)：947-956.(in Chinese))
[16]	陈孟乔，杨广武. 新建地铁车站近距离穿越既有地铁隧道的变形控制[J]. 中国铁道科学，2011，32(4)：53-59.(CHEN Mengqiao，YANG Guangwu. Deformation control of a newly-built subway station crossing the adjacent existing subway tunnel[J]. China Railway Science，2011，32(4)：53-59.(in Chinese))
[18]	翁效林，王俊，王立新，等. 黄土地层浸水湿陷对地铁隧道结构影响试验研究[J]. 岩土工程学报，2016，38(8)：1 374-1 380. (WENG Xiaolin，WANG Jun，WANG Lixin，et al. Experimental research on influence of loess collapsibility on subway tunnels[J]. Chinese Journal of Geotechnical Engineering，2016，38(8)：1 374- 1 380.(in Chinese))
[13]	漆泰岳. 地铁施工引起地层和建筑物沉降特征研究[J]. 岩土工程学报，2012，34(7)：1 283-1 290.(QI Taiyue. Settlement characteristics of strata and buildings caused by metro tunneling[J]. Chinese Journal of Geotechnical Engineering，2012，34(7)：1 283-1 290.(in Chinese))
[20]	HONG Y，SOOMRO M A，NG C W W. Settlement and load transfer mechanism of pile group due to side-by-side twin tunneling[J]. Computers and Geotechnics，2015，64：105-119. " target="_blank">
[3]	SCHROEDER F C，POTTS D M，ADDENBROOKE T I. The influence of pile group loading on existing tunnels[J]. Geotechnique，2004，54(6)：351-362. " target="_blank">
[8]	NG C W W，HONG Y，SOOMRO M A. Effects of piggyback twin tunnelling on a pile group：3D centrifuge tests and numerical modeling[J]. Geotechnique，2015，65(1)：38-51. " target="_blank">
[15]	LEE C J，CHIANG K H. Responses of single piles to tunnelling- induced soil movements in sandy ground[J]. Canadian Geotechnical Journal，2007，44(10)：1 224-1 241. " target="_blank">
[17]	YAO J，TAYLOR R N，MCNAMARA A M. The effects of bored pile excavation on existing tunnels[C]// Proceedings of the Sixth International Conference on Physical Modelling in Geotechnics. Hongkong：Hongkong University of Science and Technology，2006：1 195-1 200. " target="_blank">
[19]	李早，黄茂松. 隧道开挖对群桩竖向位移和内力影响分析[J]. 岩土工程学报，2007，29(3)：398-402.(LI Zao，HUANG Maosong. Analysis of settlement and internal forces of group pile due to tunneling[J]. Chinese Journal of Geotechnical Engineering，2007，29(3)：398-402.(in Chinese))
[4]	闫静雅，张子新，黄宏伟，等. 桩基础荷载对邻近已有隧道影响的有限元分析[J]. 岩土力学，2008，29(9)：2 508-2 514.(YAN Jingya，ZHANG Zixin，HUANG Hongwei，et al. Finite element analysis of influence of pile group loading on existing neighboring tunnels[J]. Rock and Soil Mechanics，2008，29(9)：2 508-2 514.(in Chinese))
[2]	楼晓明，刘建航. 高层建筑桩基础对邻近隧道影响的监测与分析[J]. 同济大学学报：自然科学版，2003，31(9)：1 014-1 018. (LOU Xiaoming，LIU Jianhang. Monitoring and analysis of influence of pile foundation under high-rise buildings on adjacent tunnel[J]. Journal of Tongji University：Natural Science，2003，31(9)：1 014- 1 018.(in Chinese))
[7]	NG C W W，LU H. Effects of construction sequence of twin tunnelling at different depth on a single pile[J]. Canadian Geotechnical Journal，2013，51(2)：173-183. " target="_blank">
[9]	马少坤，吕虎，WONG K S，等. 双隧道对群桩影响的三维离心模型试验研究[J]. 岩土工程学报，2013，35(7)：1 337-1 342. (MA Shaokun，LU Hu，WONG K S，et al. Three-dimensional centrifuge modelling of the effects of twin tunnelling on existing pile group in expansive clay[J]. Chinese Journal of Geotechnical Engineering，2013，35(7)：1 337-1 342.(in Chinese))