盾构侧穿邻近古建筑地表长期沉降预测与分析

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Abstract Based on the project of Shanghai metro line 11's side-crossing the St. Ignatius Cathedral，some helpful predications and deep analysis about long-term surface settlements have been presented by employing numerical simulation approaches and in-situ measurement techniques. Furthermore，the strengthening effects of MJS piles and the complicated influences of adjacent architectures are evaluated and calculated prudently. The computation results indicate that long-term surface settlement increases gradually over time and achieves stabilization ultimately. Due to the existence of MJS piles and adjacent buildings，the settlement trough significantly differs from traditional forms and performs a remarkable asymmetry. Particularly，it should be emphasized that those MJS piles effectively protect the surrounding region from large settlements and other harmful effects. The numerical simulation results and in-situ measurement data reveal a matching physical discipline；so the method of numerical simulation is validated scientifically and reasonably. Finally，several influences which contribute to the long-term settlement are analyzed：MJS pile reinforcement，building，disturbed region and creep parameters. Obviously，the achievement in this paper would provide a valuable reference for future similar projects.

Key words： pile foundations MJS pile；side-crossing ancient architecture long-term settlement in-situ measurement numerical calculation

Received: 18 May 2011

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https://rockmech.whrsm.ac.cn/EN/Y2011/V30/I10/2143

[1] SHIRLAW J N. Pore pressure around tunnels in clay：discussion[J]. Canadian Geotechnical Journal，1993，30(8)：1 044–1 046. [2] SHIRLAW J N. Observed and calculated pore pressures and deformations induced by an earth balance shield：discussion[J]. Canadian Geotechnical Journal，1995，32(1)：181–189 [3] O?REILLY M P，MAIR R J，ALDERMAN G H. Long-term settlements over tunnels：an eleven-year study at Grimsby[C]// Proceedings of Conference on Tunneling. London：[s. n.]，1991：55–64. [4] MAIR R J，TAYLOR R N. Theme lecture：bored tunneling in the urban environment[C]// Proceedings of the Fourteenth International Conference on Soil Mechanics and Foundation Engineering. [S.l.]：[s. n.]，1997：2 353–2 385. [5] FAHIMIFAR A，TEHRANI F M，HEDAYAT A，et al. Analytical solution for the excavation of circular tunnels in a viscoelastic Burger?s material under hydrostatic stress field[J]. Tunnelling and Underground Space Technology，2010，25(2)：297–304. [6] 张冬梅，黄宏伟，王箭明. 软土隧道地表长期沉降的黏弹性流变与固结耦合分析[J]. 岩石力学与工程学报，2003，22(增1)：2 359– 2 362.(ZHANG Dongmei，HUANG Hongwei，WANG Jianming. Analysis of long-term settlements of over tunnels using visco elastic constitutive model coupled with consolidation theory[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(Supp.1)： 2 359–2 362.(in Chinese)) [7] 刘干斌，谢康和，施祖元. 黏弹性土体中深埋圆形隧道的应力和位移分析[J]. 工程力学，2004，21(5)：132–138.(LIU Ganbin，XIE Kanghe，SHI Zuyuan. Analysis of stress and displacement around a deep circular tunnel in viscoelastic soil[J]. Engineering Mechanics，2004，21(5)：132–138.(in Chinese)) [8] SHALABI F I. FE analysis of time-dependent behavior of tunneling in squeezing ground using two different creep models[J]. Tunnelling and Underground Space Technology，2005，20(3)：271–279. [9] 陈晓平，白世伟. 软黏土地基黏弹塑性比奥固结的数值分析[J]. 岩土工程学报，2001，23(4)：481–484.(CHEN Xiaoping，BAI Shiwei. Numerical analysis of visco-elastic-plastic Biot?s consolidation for soft clay foundation[J]. Chinese Journal of Geotechnical Engineering，2001，23(4)：481–484.(in Chinese)) [10] JIANG L M，LIN H. Integrated analysis of SAR interferometric and geological data for investigating long-term reclamation settlement of Chek Lap Kok Airport，Hong Kong[J]. Engineering Geology，2010，110(1)：77–92. [11] 张庆贺，朱忠龙，杨俊龙，等. 盾构推进引起土体扰动理论分析及试验研究[J]. 岩石力学与工程学报，1999，18(6)：699–703. (ZHANG Qinghe，ZHU Zhonglong，YANG Junlong，et al. Analysis and testing study of soil disturbance caused by shield-driven tunneling[J]. Chinese Journal of Rock Mechanics and Engineering，1999，18(6)：699–703.(in Chinese)) [12] 徐永福，陈建山，傅德明. 盾构掘进对周围土体力学性质的影响[J]. 岩石力学与工程学报，2003，22(7)：1 174–1 179.(XU Yongfu，CHEN Jianshan，FU Deming. Effect of shield tunneling on mechanical properties of soils[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(7)：1 174–1 179.(in Chinese)) [13] 袁大军，尹凡，王华伟，等. 超大直径泥水盾构掘进对土体的扰动研究[J]. 岩石力学与工程学报，2009，28(10)：2 074–2 080. (YUAN Dajun，YIN Fan，WANG Huawei，et al. Study of soil disturbance caused by super-large diameter slurry shield tunneling[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(10)：2 074–2 080.(in Chinese)) [14] 谢宁，孙钧. 上海地区饱和软黏土流变特性[J]. 同济大学学报，1996，24(3)：233–237.(XIE Ning，SUN Jun. Rheological behaviors of Shanghai clays[J]. Journal of Tongji University，1996，24(3)：233–237.( in Chinese)) [15] 李军世，林咏梅. 上海淤泥质粉质黏土的Singh-Mitchell蠕变模型[J]. 岩土力学，2000，21(4)：363–366.(LI Junshi，LIN Yongmei. Singh-Mitchell creep model of Shanghai very soft silt clay[J]. Rock and Soil Mechanics，2000，21(4)：363–366.(in Chinese))