地铁并行隧道掘进对近接群桩基础的影响研究

doi:10.13722/j.cnki.jrme.2019.0825

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Abstract In the construction of subway，tunnels crossing the adjacent pile group of the existing high-rise buildings may cause excessive settlement and tilting of the piles. In this study，a series of three-dimensional centrifuge model tests and numerical simulations using an advanced hypoplastic soil model were carried out to investigate the response of an existing pile group to side-by-side twin tunneling at two typical depth，namely near the pile toe(Test TT) and below the pile toe(Test BB). Firstly，the sand layer with pile group foundation was prepared by rain flow deposition method. Secondly，under the condition of 40 g，the effect of staged excavation was simulated by drainage of water bags. Meanwhile，the settlement and rotation of the pile group was measured by linear variable differential transformers. Finally，through the finite element analysis，the settlement and lateral inclination of pile foundation are computed and compared with the centrifuge test results. The results show that：In the two tests，the maximum settlement of pile foundation is 2.1% and 2.4% of pile diameter respectively，and the maximum inclination occurs after the first tunnel excavation，which is 0.2% and 0.08%，respectively. When the depth of tunnels is large，the settlement of pile foundation is large but the rotation angle is small，the pile group changes to the friction pile，and the strength utilization of the soil unit at the base of pile decreases. When the depth is small，the settlement is small but the rotation angle is large，the pile group changes to the end bearing pile，and the strength utilization of the soil unit increases.

Key words： tunneling engineering side-by-side twin tunnels pile foundations deformation load transfer mechanism centrifuge model test numerical simulation

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	Articles by authors
	XU Yuanqi1
	2
	SHAN Zhigang1
	GAN Penglu1
	2
	LIU Shiming1
	2
	ZHANG Zhuanzhuan3
	HOU Yongmao4

Cite this article:

XU Yuanqi1,2,SHAN Zhigang1, et al. Influence of side-by-side twin tunneling on an existing pile group[J]. , 2021, 40(S1): 2935-2944.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.0825 OR https://rockmech.whrsm.ac.cn/EN/Y2021/V40/IS1/2935

[1] 何川，封坤，方勇. 盾构法修建地铁隧道的技术现状与展望[J]. 西南交通大学学报，2015，50(1)：97–109.(HE Chuan，FENG Kun，FANG Yong. Review and prospects on constructing technologies of metro tunnels using shield tunnelling method[J]. Journal of Southwest Jiaotong University，2015，50(1)：97–109.(in Chinese)) [2] 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)) [3] 沈亚威. 地铁施工对邻近桥桩变形和受力影响研究[J]. 现代城市轨道交通，2019，(10)：32–37.(SHEN Yawei. Study on impact of metro construction on deformation and stress of adjacent bridge piles[J]. Modern Urban Transit，2019，(10)：32–37.(in Chinese)) [4] 宫全美，张润来，余杰，等. 桩底盾构施工引起的桩基承载力损失计算[J]. 同济大学学报：自然科学版，2018，46(10)：1 384–1 391.(GONG Quanmei，ZHANG Runlai，YU Jie，et al. Calculating method of pile bearing capacity loss induced by the tunnel excavation underneath the pile[J]. Journal of Tongji University：Natural Science，2018，46(10)：1 384–1 391.(in Chinese)) [5] 李围，何川，张志强. 大型地下结构下修建盾构隧道模型试验[J]. 西南交通大学学报，2005，40(4)：478–483.(LI Wei，HE Chuan，ZHANG Zhiqiang. Model test of constructing shield tunnel under large underground structure[J]. Journal of Southwest Jiaotong University，2005，40(4)：478–483.(in Chinese)) [6] 何川，李讯，江英超，等. 黄土地层盾构隧道施工的掘进试验研究[J]. 岩石力学与工程学报，2013，32(9)：1 736–1 743.(HE Chuan，LI Xun，JIANG Yingchao，et al. Laboratory test on shield tunneling in loess strata[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(9)：1 736–1 743.(in Chinese)) [7] 何川，李永林，林刚，等. 连拱隧道施工引起的地层位移分析[J]. 岩土力学，2005，26(4)：612–616.(HE Chuan，LI Yonglin，LIN Gang，et al. Analysis of stratum displacements by multiple arch tunnel construction[J]. Rock and Soil Mechanics，2005，26(4)：612–616.(in Chinese)) [8] 漆泰岳，刘强，琚国全. 软弱岩层大跨度地铁车站施工优化与地表沉降控制[J]. 岩石力学与工程学报，2010，29(4)：804–813.(QI Taiyue，LIU Qiang，JU Guoquan. Optimization of large-span metro station construction in soft rock strata and control of ground surface subsidence[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(4)：804–813.(in Chinese)) [9] 江英超，何川，胡雄玉，等. 砂土地层盾构隧道施工对地层扰动的室内掘进试验研究[J]. 岩石力学与工程学报，2013，32(12)：2 550–2 559.(JIANG Yingchao，HE Chuan，HU Xiongyu，et al. Laboratory test study of soil disturbance caused by shield tunnelling in sandy strata[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(12)：2 550–2 559.(in Chinese)) [10] 漆泰岳，高波，马亮. 富水软土地层地铁开挖地表沉降离心模型试验[J]. 西南交通大学学报，2006，41(2)：184–189.(QI Taiyue，GAO Bo，MA Liang. Centrifugal model test for ground surface subsidence caused by metro tunneling in saturated soft clay strata [J]. Journal of Southwest Jiaotong University，2006，41(2)：184–189.(in Chinese)) [11] 吴波，高波，索晓明，等. 城市地铁隧道施工对管线的影响研究[J]. 岩土力学，2004，25(4)：657–662.(WU Bo，GAO Bo，SUO Xiaoming，et al. Study on influence of metro tunnel excavation on buried pipelines[J]. Rock and Soil Mechanics，2004，25(4)：657–662.(in Chinese)) [12] 漆泰岳，高波，谭代明. 软土地层地铁隧道施工对地下管线的影响[J]. 西南交通大学学报，2010，45(1)：45–53.(QI Taiyue，GAO Bo，TAN Daiming. Influence of metro tunneling in soft clay strata on underground pipeline[J]. Journal of Southwest Jiaotong University，2010，45(1)：45–53.(in Chinese)) [13] 方勇，何川. 平行盾构隧道施工对既有隧道影响的数值分析[J]. 岩土力学，2007，28(7)：1 402–1 406.(FANG Yong，HE Chuan. Numerical analysis of effects of parallel shield tunneling on existent tunnel[J]. Rock and Soil Mechanics，2007，28(7)：1 402–1 406.(in Chinese)) [14] 莫品强，高新慰，黄子丰，等. 下穿隧道开挖引起的挤土桩沉降控制分析方法[J]. 岩土力学，2019，40(10)：3 823–3 832.(MO Pinqiang，GAO Xinwei，HUANG Zifeng，et al. Analytical method for settlement control of displacement pile induced by undercrossing tunnel excavation[J]. Rock and Soil Mechanics，2019，40(10)：3 823–3 832.(in Chinese)) [15] 刁钰，贾镇阳，李光帅，等. 考虑基坑开挖效应时隧道施工对桩受力特性影响[J]. 土木工程学报，2019，52(增1)：127–134.(DIAO Yu，JIA Zhenyang，LI Guangshuai，et al. Influence of tunneling on pile performance considering excavation history[J]. China Civil Engineering Journal，2019，52(Supp.1)：127–134.(in Chinese)) [16] 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]. Géotechnique，2015，65(1)：38–51. [17] 李娴，王思瑶，张标，等. 双孔隧道的地表沉降预测及其可靠度分析[J]. 地下空间与工程学报，2019，15(增1)：428–435.(LI Xian，WANG Siyao，ZHANG Biao，et al. Ground surface settlement prediction and reliability analysis of twin tunnels[J]. Chinese Journal of Underground Space and Engineering，2019，15(Supp.1)：428–435.(in Chinese)) [18] GHORBANI H，AJALLOEIAN R. A method for selection of optimum distance between twin tunnels under static and pseudo-static conditions，case study：Pooneh tunnel[J]. Geotechnical and Geological Engineering，2019，37(5)：4 435–4 446. [19] JACOBSZ S W，STANDING J R，MAIR R J，et al. Centrifuge modeling of tunneling near driven piles[J]. Soil and Foundations，2004，44(1)：49–56. [20] NG C W W，LU H，PENG S Y. Three-dimensional centrifuge modelling of effects of twin tunnelling on as existing pile[J]. Tunneling and Underground Space Technology，2012，35：189–199. [21] NG C W W，YAU T L Y，LI J H M，et al. New failure load criterion for large diameter bored piles in weathered geomaterials[J]. Journal of Geotechnical and Geoenvironmental Engineering，2001，127(6)：488–498. [22] KISHIDA H，UESUGI M. Tests of the interface between sand and steel in the simple shear apparatus[J]. Géotechnique，1987，37(1)：45–52. [23] FIORAVANTE V. On the shaft friction modelling of non-displacement piles in sand[J]. Soils and Foundations，2002，42(2)：23–33. [24] FUGLSANG L D，OVESEN N K. The theory of modelling to centrifuge studies，centrifuge in soil mechanics[M]. Rotterdam：Craig，James and Schofield，1988：103–106. [25] HONG Y，KOO C H，ZHOU C，et al. Small strain path-dependent stiffness of Toyoura sand：laboratory measurement and numerical implementation[J]. International Journal of Geomechanics，2017，17(1)：04016036. [26] CHENG C Y，DASARI G R，CHOW Y K，et al. Finite element analysis of tunnel-soil-pile interaction using displacement controlled model[J]. Tunnelling and Underground Space Technology，2007，22：450–466. [27] HERLE I，GUDEHUS G. Determination of parameters of a hypoplastic constitutive model from properties of grain assemblies[J]. Mechanics of Cohesive-Frictional Materials，1999，4(5)：461–486. [28] MAEDA K，MIURA K. Confining stress dependency of mechanical properties of sands[J]. Soils and Foundations，1999，39(1)：53–67. [29] NIEMUNIS A，HERLE I. Hypoplastic model for cohesionless soils with elastic strain range[J]. Mechanics of Cohesive-Frictional Materials，1997，(2)：279–299. [30] YAMASHITA S，JAMIOLKOWSKI M，DIEGO C F L P. Stiffness nonlinearity of three sands[J]. Journal of Geotechnical and Geoenvironmental Engineering，2000，126(10)：929–938. [31] ISHIHARA K. Liquefaction and flow failure during earthquakes[J]. Géotechnique，1993，43(3)：351–415. [32] JáKY J. The coefficient of earth pressure at rest[J]. Journal of the Society of Hungarian Architects and Engineers，1944，5：355–358. [33] HIBBITT，KARLSSON & Sorensen Inc. ABAQUS User?s Manual[M]. Berlin：Springer，2008：1–5. [34] SOOMRO M A. Effects of advancing twin tunnels on pile group[Ph. D. Thesis][D]. Hong Kong：The Hong Kong University of Science and Technology，2013. [35] LOGANATHAN N，POULOS H G，XU K J. Ground and pile-group responses due to tunneling[J]. Soils and Foundations，2001，41(1)：57–67. [36] MARSHALL A M. Tunneling in sand and its effect on pipelines and piles[M. S. Thesis][D]. Cambridge：University of Cambridge，2009. [37] MARSHALL A M，MAIR R J. Tunneling beneath driven or jacked end-bearing piles in sand[J]. Canadian Geotechnical Journal，2011，48：1 757–1 771.