邻近基坑施工作用下盾构隧道横向变形及开裂特性研究

doi:10.13722/j.cnki.jrme.2016.0893

摘要
图/表
参考文献(18)
相关文章 (15)

全文: PDF (2215 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要宁波地铁1号线某区间左线隧道在邻近基坑施工时产生较大位移和横向变形以及严重的管片结构开裂和破损现象。基于现场测试结果总结管片结构的破损特征，采用横向变形和开裂特性相互分离的数值方法探讨邻近基坑施工作用下隧道的横向变形和开裂特性，并预测管片环的开裂趋势。基于Plaxis的平面应变模型其收敛变形预测值小于测试值，坑内降水是导致该隧道产生较大刚体位移的重要原因。衬砌环“横椭圆”变形模式决定了其开裂范围，即拱顶和拱底附近为易开裂部位，相对最大裂缝宽度总出现在拱顶或拱底附近，这与现场观测结果一致。当竖向收敛增量达到1%隧道外径时，靠近基坑一侧的拱底宏观裂缝在管片厚度方向贯穿，成为贯穿裂缝。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	杨雨冰1
	周彪2
	谢雄耀2

关键词 ：隧道工程, 基坑施工, 横向变形, 开裂特性

Abstract：The left shield tunnel between two stations of Ningbo metro line No.1 was damaged as a result of adjacent excavation. Cracks，concrete spalling and chipping appeared in the reinforced concrete segments due to the large displacement and transverse deformation of tunnel. The damage and cracking characteristics of this tunnel was summarized according to results of the on-site inspection and measurement. The transverse deformation and cracking property of shield tunnel induced by the adjacent excavation was numerically and separately studied，and the tendency of cracking was also numerically predicted. The numerical prediction of the vertical convergence was lower than the field data，and the rigid body displacement was mainly induced by the dewatering inside the excavation pit. The transverse deformation mode of tunnel lining ring，“horizontal oval”，actually determines its cracking range. The crown and invert of tunnel were the most vulnerable positions. The relative maximum crack width appeared around these positions. These predictions were agreed well with the field observations. The macro cracks at the invert of tunnel would run through the depth of reinforce concrete segment and become penetrating cracks if the increment of vertical convergence reached up to 1% tunnel external diameter.

Key words： tunnelling engineering pit excavation transverse deformation cracking property

引用本文:

杨雨冰1，周彪2，谢雄耀2. 邻近基坑施工作用下盾构隧道横向变形及开裂特性研究[J]. 岩石力学与工程学报, 2016, 35(S2): 4082-4093.
YANG Yubing1，ZHOU Biao2，XIE Xiongyao2. Study on transverse deformation and cracking property of shield-driven tunnel induced by adjacent excavation. , 2016, 35(S2): 4082-4093.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2016.0893 或 https://rockmech.whrsm.ac.cn/CN/Y2016/V35/IS2/4082

[1] SHARMA J S，HEFNY A M，ZHAO J，et al. Effect of large excavation on deformation of adjacent MRT tunnels[J]. Tunnelling and Underground Space Technology，2001，16(2)：93–98.

[2] 王卫东，沈健，翁其平，等. 基坑工程对邻近地铁隧道影响的分析与对策[J]. 岩土工程学报，2006，28(增1)：1 340–1 345.(WANG Weidong，SHEN Jian，WENG Qiping，et al. Analysis and countermeasures of influence of excavation on adjacent tunnels[J]. Chinese Journal of Geotechnical Engineering，2006，28(Supp.1)：1 340–1 345.(in Chinese))

[3] 高广运，高盟，杨成斌，等. 基坑施工对运营地铁隧道的变形影响及控制研究[J]. 岩土工程学报，2010，32(3)：453–459.(GAO Guangyun，GAO Meng，YANG Chengbin，et al. Influence of deep excavation on deformation of operating metro tunnels and countermeasures[J]. Chinese Journal of Geotechnical Engineering，2010，32(3)：453–459.(in Chinese))

[4] 张治国，张孟喜，王卫东. 基坑开挖对临近地铁隧道影响的两阶段分析方法[J]. 岩土力学，2011，32(7)：2 085–2 092.(ZHANG Zhiguo，ZHANG Mengxi，WANG Weidong. Two-stage method for analyzing effects on adjacent metro tunnels due to foundation pit excavation[J]. Rock and Soil Mechanics，2011，32(7)：2 085–2 092. (in Chinese))

[5] ZHANG Z G，HUANG M S，WANG W D. Evaluation of deformation response for adjacent tunnels due to soil unloading in excavation engineering[J]. Tunnelling and Underground Space Technology，2013，38：244–253.

[6] 刘庭金. 基坑施工对盾构隧道变形影响的实测研究[J]. 岩石力学与工程学报，2008，27(增2)：3 393–3 400.(LIU Tingjin. Study on shield tunnel deformation due to foundation pit construction[J]. Chinese Journal of Rock Mechanics and Geotechnical Engineering，2008，27(Supp.2)：3 393–3 400.(in Chinese))

[7] 黄宏伟，黄栩，SCHWEIGER F H. 基坑开挖对下卧运营盾构隧道影响的数值模拟研究[J]. 土木工程学报，2012，45(3)：182–189.(HUANG Hongwei，HUANG Xu，SCHWEIGER F H. Numerical analysis of the influence of deep excavation on underneath existing road tunnel[J]. China Civil Engineering Journal，2012，45(3)：182–189.(in Chinese))

[8] CHANG C T，SUN C W，DUANN S W，et al. Response of a Taipei Rapid Transit System (TRTS) tunnel to adjacent excavation[J]. Tunneling and Underground Space Technology，2001，16(3)：151–158.

[9] 上海市市政工程管理局. 上海市地铁沿线建筑施工保护地铁技术管理暂行规定[S]. 上海：上海市市政工程管理局，1994.(Shanghai Municipal Engineering Administration. Interim Provisions of Protection Technology for Construction Activities near the Subway[S]. Shanghai：Shanghai Municipal Engineering Administration，1994.(in Chinese))

[10] 徐中华，王卫东. 敏感环境下基坑数值分析中土体本构模型的选择[J]. 岩土力学，2010，33(1)：258–264.(XU Zhonghua，WANG Weidong. Selection of soil constitutive models for numerical analysis of deep excavations in close proximity to sensitive properties[J]. Rock and Soil Mechanics，2010，33 (1)：258–264.(in Chinese))

[11] 闫静雅. 桩基础全寿命期对邻近已有隧道的影响研究[博士学位论文][D]. 上海：同济大学，2007.(YAN Jingya. The influence of pile foundation in life-cycle on adjacent existing tunnel[Ph. D Thesis][D]. Shanghai：Tongji University，2007.(in Chinese))

[12] 刘国斌，王卫东. 基坑工程手册[M]. 北京：中国建筑工业出版社，2009：216–226.(LIU Guobin，WANG Weidong. Excavation engineering manual[M]. Beijing：China Architecture and Building Press，2009：216–226.(in Chinese))

[13] 甘涛. 宁波轨道交通盾构法隧道施工引起的地表沉降的规律研究[硕士学位论文][D]. 杭州：浙江大学，2012.(GAN Tao. Study on the law of ground settlement with shield driven method in Ningbo area[M. S. Thesis][D]. Hangzhou：Zhejiang University，2012.(in Chinese))

[14] 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))

[15] 杨雨冰，谢雄耀. 基于断裂力学的盾构隧道管片结构开裂破损机制探讨[J]. 岩石力学与工程学报，2015，34(10)：2 114–2 124.(YANG Yubing，XIE Xiongyao. Breaking mechanism of segmented lining in shield tunnel based on fracture mechanics[J]. Chinese Journal of Rock mechanics and Engineering，2015，34(10)：2 114–2 124.(in Chinese))

[16] YAN Z G，ZHU H H，JU J W. Behavior of reinforced concrete and steel fiber reinforced concrete shield TBM tunnel linings exposed to high temperatures[J]. Construction and Building Materials，2013，38：610–618.

[17] MANIE J. DIANA User¢s manual element library (release 9.4.4)[M]. Delft，The Netherlands：TNO DIANA BV，2011：415–426.

[18] MANIE J. DIANA User¢s manual element library (release 9.4.4)[M]. Delft，The Netherlands：TNO DIANA BV，2011：579–592.