重叠隧道盾构施工对先建隧道影响模型试验研究

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摘要针对软土地区重叠盾构隧道施工中，由于不同开挖顺序及不同推进速度下既有隧道位移和内力变化规律，设计了4组模型试验，试验结果表明，先上后下施工时，下线隧道的施工引起上线隧道纵向的沉降，且上线隧道管片环向内力发生偏转，拱底两侧内力变化最大；先下后上施工时，上线隧道的施工引起下线隧道纵向隆起，且下线隧道管片环向内力发生偏转，拱顶两侧内力变化最大；不管何种施工顺序，都会引起隧道纵向附加内力，但纵向内力表现为波动性和临时性。从纵向位移及既有隧道的内力改变来看，先下后上施工顺序的安全性优于先上后下的施工顺序。在重叠盾构隧道施工过程中，既有隧道的附加变位和内力值均随着推进速度的增大而增大，并且推进速度的影响范围也相应增大，所以在施工期间，应合理控制盾构机的推进速度，以免对近接既有隧道的结构安全造成较大的影响。

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关键词 ：隧道工程, 重叠隧道, 先建隧道, 模型试验

Abstract：According to the construction of overlapping shield tunnel in soft soil area，four model tests have been carried out to simulate displacement and force variation rules of the existing tunnel due to the different construction orders and the different tunneling speeds. Experimental results indicate that：(1) In case of the upper tunnel first and the lower tunnel last，the lower tunnel construction leads to the longitudinal settlement of the upper tunnel. The circumferential internal force of tunnel segment of the upper tunnel generates deflection. The internal force in the arch bottom changes the most. (2) In case of the lower tunnel first and the upper tunnel last，the upper tunnel construction leads to the longitudinal uplift of the lower tunnel. The circumferential internal force of tunnel segment of the lower tunnel generates deflection. The internal force in the arch vault changes the most. (3) Regardless of the kind of construction orders，additional internal force along the longitudinal dimension will always be observed，with features of fluctuation and temporality. Comparing the influence of displacement and internal force on the existing tunnel induced by constructing overlapping tunnels，the lower tunnel first is better for the construction safety than the upper tunnel first. In the process of construction of overlapping shield tunnel，the additional deformation and force of the existing tunnel increase with the increase of tunnelling speed；and the impact range of tunnelling speed also increases. In this case，the tunnelling speed of the shield machine should be controlled in a proper range to avoid significant influence on the safety of adjacent existing tunnel structure.

Key words： tunnelling engineering overlapping tunnel existing tunnel model test

收稿日期: 2013-06-03

引用本文:

谢雄耀1，2，牛俊涛1，2，杨国伟3，刘晨1，2. 重叠隧道盾构施工对先建隧道影响模型试验研究[J]. 岩石力学与工程学报, 2013, 32(10): 2061-2069.
XIE Xiongyao1，2，NIU Juntao1，2，YANG Guowei3，LIU Chen1，2. MODEL TEST FOR EFFECTS OF CONSTRUCTION OF SHIELD TUNNELLING IN OVERLAPPING TUNNELS ON EXISTING TUNNEL. , 2013, 32(10): 2061-2069.

链接本文:

http://www.rockmech.org/CN/Y2013/V32/I10/2061

[3]	郑余朝，仇文革. 重叠隧道结构内力演变的三维弹塑性数值模拟[J].西南交通大学学报，2006，41(3)：376-380.(ZHENG Yuchao，QIU Wenge. 3D elastoplastic numerical simulation of evolving regularity of structural internal force of overlapped tunnels[J]. Journal of Southwest Jiaotong University，2006，41(3)：376-380.(in Chinese))
[7]	李昀，张子新. 泥水平衡盾构开挖面稳定模型试验研究[J]. 岩土工程学报，2007，29(7)：1 074-1 079.(LI Yun，ZHANG Zixin. Laboratory study on face stability mechanism of slurry shields[J]. Chinese Journal of Geotechnical Engineering，2007，29(7)：1 074-1 079.(in Chinese)) " target="_blank">
[8]	唐志成，何川，林刚. 地铁盾构隧道管片结构力学行为模型试验研究[J]. 岩土工程学报，2005，27(1)：85-89.(TANG Zhicheng，HE Chuan，LIN Gang. Study on mechanical behavior of segment of shield tunnel of metro with model test[J]. Chinese Journal of Geotechnical Engineering，2005，27(1)：85-89.(in Chinese))
[9]	孙吉主，肖文辉. 基于透明土的盾构隧道模型试验设计研究[J]. 武汉理工大学学报，2011，33(5)：108-112.(SUN Jizhu，XIAO Wenhui. Design on model test of shield tunneling in transparent soil[J]. Journal of Wuhan University of Technology，2011，33(5)：108-112.(in Chinese)) " target="_blank">
[11]	黄宏伟，徐凌，严佳梁，等. 盾构隧道横向刚度有效率研究[J]. 岩土工程学报，2006，28(1)：11-18.(HUANG Hongwei，XU Ling，YAN Jialiang，et al. Study on transverse effective rigidity ratio of shield tunnels[J]. Chinese Journal of Geotechnical Engineering，2006，28(1)：11-18.(in Chinese))
[13]	VAN W H N C. Segmental tunnel lining behavior in axial direction[C]// Geotechnical Aspects of Underground Construction in Soft Ground. [S. l.]：[s. n.]，1999：265-278. " target="_blank">
[1]	张海波，殷宗泽. 近距离叠交隧道盾构施工对老隧道影响的数值模拟[J]. 岩土力学，2005，26(2)：282-286.(ZHANG Haibo，YIN Zongze. Numerical simulation of influence of new tunnel on short distance overlapped old tunnel during shield tunneling[J]. Rock and Soil Mechanics，2005，26(2)：282-286.(in Chinese)) " target="_blank">
[5]	左东启. 模型试验的理论与方法[M]. 北京：水利电力出版社，1984：228-235.(ZUO Dongqi. The theory and method of model test[M]. Beijing：China Water Power Press，1984：228-235.(in Chinese)) " target="_blank">
[16]	李围. 盾构隧道管片衬砌结构纵向刚度问题初步研究[J]. 铁道工程学报，2008，(5)：63-65.(LI Wei. Study on the longitudinal rigidity of segment lining of shield tunnel[J]. Journal of Railway Engineering Society，2008，(5)：63-65.(in Chinese)) " target="_blank">
[10]	李术才，周毅，李利平，等. 地下工程流-固耦合模型试验新型相似材料的研制及应用[J]. 岩石力学与工程学报，2012，31(6)：1 128-1 137.(LI Shucai，ZHOU Yi，LI Liping，et al. Development and application of a new similar material for underground fluid-soild coupling model test[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(6)：1 128-1 137.(in Chinese)) " target="_blank">
[14]	何川，张建刚，杨征. 武汉长江隧道管片衬砌结构力学特征模型试验研究[J]. 土木工程学报，2008，41(12)：85-90.(HE Chuan，ZHANG Jiangang，YANG Zheng. Model test study on the mechanical characteristics of segment lining for the Wuhan Yangze River Tunnel[J]. China Civil Engineering Journal，2008，41(12)：85-90.(in Chinese)) " target="_blank">
[2]	孙钧，刘洪洲. 交叠隧道盾构法施工土体变形的三维数值模拟[J].同济大学学报，2002，22(4)：379-385.(SUN Jun，LIU Hongzhou. 3D numerical simulation of ground surface settlement under overlapped shield tunneling[J]. Journal of Tongji University，2002，22(4)：379-385.(in Chinese)) " target="_blank">
[4]	KIM S H. Model testing and analysis of interactions between tunnels in clay[Ph. D. Thesis][D]. London：University of Cambridge，1996. " target="_blank">
[6]	OVESEN N K. The use of physical models in design[C]// The Scaling Law Relationships. [S.l.]：[s. n.]，1998：318-323. " target="_blank">
[12]	叶飞，何川. 浅析盾构隧道模型试验的现状与发展[J]. 现代隧道技术，2011，(1)：66-74.(YE Fei，HE Chuan. Discussion on present situation and development of model test of shield tunnelling[J]. Modern Tunneling Technology，2011，(1)：66-74.(in Chinese)) " target="_blank">
[15]	徐凌. 软土盾构隧道纵向沉降研究[博士学位论文][D]. 上海：同济大学，2005.(XU Ling. Study on the longitudinal settlement of shield tunnel in soft soil[Ph. D. Thesis][D]. Shanghai：Tongji University，2005.(in Chinese)) " target="_blank">
[17]	俞涛. 地铁盾构隧道近接施工影响的数值模拟及模型试验研究[博士学位论文][D]. 成都：西南交通大学，2005.(YU Tao. Numerical simulation and model test for effects of closed-spaced construction of subway shield tunnels[Ph. D. Thesis][D]. Chengdu：Southwest Jiaotong University，2005.(in Chinese)) " target="_blank">