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[1]宋棋龙,祁文睿,李文静,等.滨海软土地层浅埋超大直径盾构隧道开挖面破坏机理及加固范围研究[J].建筑科学与工程学报,2021,38(06):155-162.[doi:10.19815/j.jace.2021.08054]
 SONG Qi-long,QI Wen-rui,LI Wen-jing,et al.Study on Failure Mechanism of Excavation Face and Reinforcement Range of Shallow-buried Super Large Diameter Shield Tunnel in Coastal Soft Soil Stratum[J].Journal of Architecture and Civil Engineering,2021,38(06):155-162.[doi:10.19815/j.jace.2021.08054]
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滨海软土地层浅埋超大直径盾构隧道开挖面破坏机理及加固范围研究(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
38卷
期数:
2021年06期
页码:
155-162
栏目:
软土隧道施工与变形控制
出版日期:
2021-11-05

文章信息/Info

Title:
Study on Failure Mechanism of Excavation Face and Reinforcement Range of Shallow-buried Super Large Diameter Shield Tunnel in Coastal Soft Soil Stratum
文章编号:
1673-2049(2021)06-0155-08
作者:
宋棋龙1,祁文睿2,李文静3,张新建4,苏 栋1,5,6,林星涛1,5,6
(1. 深圳大学 土木与交通工程学院,广东 深圳 518060; 2. 中铁十五局集团有限公司,上海 200070; 3. 珠海大横琴城市新中心发展有限公司,广东 珠海 519030; 4. 珠海市规划设计研究院,广东 珠海 519000; 5. 深圳大学 滨海城市韧性基础设施教育部重点实验室,广东 深圳 518060; 6. 深圳大学 深圳市地铁地下车站绿色高效智能建造重点实验室,广东 深圳 518060)
Author(s):
SONG Qi-long1, QI Wen-rui2, LI Wen-jing3, ZHANG Xin-jian4, SU Dong1,5,6,LIN Xing-tao1,5,6
(1. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China; 2. China Railway 15th Bureau Group Co., Ltd., Shanghai 200070, China; 3. Zhuhai Dahengqin City New Center Development Co., Ltd., Zhuhai 519030, Guangdong, China; 4. Zhuhai Institute of Urban Planning and Design, Zhuhai 519000, Guangdong, China;
关键词:
软土地层 加固范围 超大直径盾构隧道 开挖面 破坏机理
Keywords:
soft soil stratum reinforcement range super large diameter shield tunnel excavation face failure mechanism
分类号:
TU312
DOI:
10.19815/j.jace.2021.08054
文献标志码:
A
摘要:
为了确定软土地层中隧道加固的合理范围,保证盾构隧道在软土地层施工的安全性,以珠海横琴杧洲隧道工程为背景,开展了软土地层浅埋超大直径盾构隧道开挖面破坏机理及合理加固范围的研究。基于三维有限元分析,研究了加固范围对开挖面主、被动破坏形式及地表变形的影响。结果表明:随着加固土层厚度t的增加,地层受开挖扰动的区域逐渐缩小,地层显著位移区域由地表收缩至开挖面前方土体,破坏形式由整体破坏转为局部破坏,t=0.20D(D为隧道直径)相比t=0时地表沉降(隆起量)减少70%~80%,地表最大变形点沿纵向的位置基本一致,均在开挖面前方约0.5D; 随着t的增加,开挖面支护压力可调节范围增加,t=0.20D时相比t=0时可调节范围增加了32.5%,这使得实际施工过程更有利于维持开挖面的稳定性; 结合经济及加固效果两方面考虑,实际工程进行地层加固时取加固土层厚度t=0.20D为较合理的方案。
Abstract:
In order to determine the reasonable range of ground reinforcement and ensure safe construction of shield tunnel in the soft soil stratum, based on Hengqin Mangzhou tunnel project in Zhuhai, the excavation failure mechanism and reasonable reinforcement range for the shallow-buried super large diameter shield tunnel in the soft soil stratum were investigated. The influence of reinforcement range on the active and passive failure forms of the excavation surface and the deformation at the ground surface were studied using the three-dimensional finite element analysis. The results show that as the reinforcement range t increases, the range disturbed by the excavation gradually shrinks, the significant displacement area of the stratum shrinks from the surface to the soil in front of the excavation face, and the failure evolves from the overall-damage mode to the local-damage mode. Compared with that in the case of t=0, the settlement and heaving at the ground surface in the case of t=0.20D(D is tunnel diameter)is reduced by 70%-80%, and the position of the maximum deformation point along the longitudinal direction is basically the same, which is about 0.5D in front of the excavation face. With the increase of t, the adjustable range of excavation face support pressure increases. Compared with t=0,when t=0.20D, the adjustable range is increased by 32.5%, which is conducive to maintaining the stability of the excavation surface during construction. Considering the economy and reinforcement effect, it is reasonable to take the reinforcement thickness of about 0.20D for stratum reinforcement in practical engineering.

参考文献/References:

[1] 张子新,胡 文.黏性土地层中盾构隧道开挖面支护压力计算方法探讨[J].岩石力学与工程学报,2014,33(3):606-614.
ZHANG Zi-xin,HU Wen.Investigation on Excavation Face Support Pressure Calculation Methods of Shield Tunnelling in Clayey Soil[J].Chinese Journal of Rock Mechanics and Engineering,2014,33(3):606-614.
[2]袁大军,沈 翔,刘学彦,等.泥水盾构开挖面稳定性研究[J].中国公路学报,2017,30(8):24-37.
YUAN Da-jun,SHEN Xiang,LIU Xue-yan,et al.Research on Excavation Face Stability of Slurry Shield Tunneling[J].China Journal of Highway and Transport,2017,30(8):24-37.
[3]邱 龑,杨新安,徐前卫,等.富水砂层盾构隧道开挖面稳定性及其失稳风险的分析[J].中国铁道科学,2015,36(6):55-62.
QIU Yan,YANG Xin-an,XU Qian-wei,et al.Analysis on Stability and Instability Risk of Excavation Face of Shield Tunnel in Water-rich Sand Layer[J].China Railway Science,2015,36(6):55-62.
[4]SHAHMORADI J,SALARI H,ROGHANCHI P.Face Stability Analysis for the Earth Pressure Balance Method in Nonhomogeneous Inclined Soil Layers:Case Study[J].International Journal of Geomechanics,2020,20(10):5020005.
[5]CHEN K H,PENG F L.An Improved Method to Calculate the Vertical Earth Pressure for Deep Shield Tunnel in Shanghai Soil Layers[J].Tunnelling and Underground Space Technology,2018,75:43-66.
[6]LIU W,ALBERS B,ZHAO Yu,et al.Upper Bound Analysis for Estimation of the Influence of Seepage on Tunnel Face Stability in Layered Soils[J].Journal of Zhejiang University-Science A,2016,17(11):886-902.
[7]乔金丽,张义同,高 健.考虑渗流的多层土盾构隧道开挖面稳定性分析[J].岩土力学,2010,31(5):1497-1502.
QIAO Jin-li,ZHANG Yi-tong,GAO Jian.Stability Analysis of Shield Tunnel Face in Multilayer Soil with Seepage[J].Rock and Soil Mechanics,2010,31(5):1497-1502.
[8]梁 禹,阳军生,陈相宇.富水砂层盾构隧道开挖面主动破坏极限支护力研究[J].现代隧道技术,2016,53(1):90-95.
LIANG Yu,YANG Jun-sheng,CHEN Xiang-yu.On the Limit Support Force on a Working Face Under Active Failure:Case Study of a Shield-driven Tunnel in a Water-rich Sandy Stratum[J].Modern Tunnelling Technology,2016,53(1):90-95.
[9]LI P F,ZOU H H,WANG F,et al.An Analytical Mechanism of Limit Support Pressure on Cutting Face for Deep Tunnels in the Sand[J].Computers and Geotechnics,2020,119:103372.
[10]吕玺琳,曾 盛,王远鹏,等.饱和圆砾地层盾构隧道开挖面稳定性物理模型试验[J].岩土工程学报,2019,41(增2):129-132.
LÜ Xi-lin,ZENG Sheng,WANG Yuan-peng,et al.Physical Model Tests on Stability of Shield Tunnel Face in Saturated Gravel Stratum[J].Chinese Journal of Geotechnical Engineering,2019,41(S2):129-132.
[11]李伟平,李 兴,薛亚东,等.砂卵石地层浅埋盾构隧道开挖面稳定模型试验[J].岩土工程学报,2018,40(增2):199-203.
LI Wei-ping,LI Xing,XUE Ya-dong,et al.Model Tests on Face Stability of Shallow Shield Tunnels in Sandy Cobble Strata[J].Chinese Journal of Geotechnical Engineering,2018,40(S2):199-203.
[12]金大龙,李兴高.砂土地层盾构隧道开挖面支护压力与地表变形关系模型试验研究[J].现代隧道技术,2015,52(2):44-51.
JIN Da-long,LI Xing-gao.Model Test of the Relationship Between the Face Support Pressure and Ground Surface Deformation of a Shield-driven Tunnel in Sand Stratum[J].Modern Tunnel Technology,2015,52(2):44-51.
[13]KIRSCH A.Experimental Investigation of Face Stability of Shallow Tunnels in Sand[J].Acta Geotechnica,2010,5(1):43-62.
[14]HERNANDEZ Y Z,FARFAN A D,DE ASSIS A P.Three-dimensional Analysis of Excavation Face Stability of Shallow Tunnels[J].Tunnelling and Underground Space Technology,2019,92:103062.
[15]ZHANG Z X,LIU C,HUANG X.Numerical Analysis of Volume Loss Caused by Tunnel Face Instability in Soft Soils[J].Environmental Earth Sciences,2017,76(16):563.
[16]潘建立.隧道掘进地层应力释放对开挖面稳定影响数值研究[J].土木工程学报,2015,48(增1):275-278.
PAN Jian-li.Numerical Study on Effects of Ground Stress Release on Face Stability During Tunneling[J].China Civil Engineering Journal,2015,48(S1):275-278.
[17]TYAGI A,LIU Y,PAN Y T,et al.Equivalent Strength for Tunnels in Cement-admixed Soil Columns with Spatial Variability and Positioning Error[J].Journal of Geotechnical and Geoenvironmental Engineering,2020,146(10):4020101.
[18]梁发云,贾亚杰,丁钰津,等.上海地区软土HSS模型参数的试验研究[J].岩土工程学报,2017,39(2):269-278.
LIANG Fa-yun,JIA Ya-jie,DING Yu-jin,et al.Experimental Study on Parameters of HSS Model for Soft Soils in Shanghai[J].Chinese Journal of Geotechnical Engineering,2017,39(2):269-278.
[19]顾晓强,吴瑞拓,梁发云,等.上海土体小应变硬化模型整套参数取值方法及工程验证[J].岩土力学,2021,42(3):833-845.
GU Xiao-qiang,WU Rui-tuo,LIANG Fa-yun,et al.On HSS Model Parameters for Shanghai Soils with Engineering Verification[J].Rock and Soil Mechanics,2021,42(3):833-845.
[20]刘志祥,张海清.PLAXIS高级应用教程[M].北京:机械工业出版社,2015.
LIU Zhi-xiang,ZHANG Hai-qing.PLAXIS Advanced Application Course[M].Beijing:China Machine Press,2015.
[21]朱 伟,秦建设,卢廷浩.砂土中盾构开挖面变形与破坏数值模拟研究[J].岩土工程学报,2005,27(8):897-902.
ZHU Wei,QIN Jian-she,LU Ting-hao.Numerical Study on Face Movement and Collapse Around Shield Tunnels in Sand[J].Chinese Journal of Geotechnical Engineering,2005,27(8):897-902.

相似文献/References:

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 DENG Bi,ZHANG Jun-wei,ZHUGE Xu-song,et al.Influence of Construction Sequence of Parallel Curved Tunnels on Existing Tunnels in Soft Soil Stratum[J].Journal of Architecture and Civil Engineering,2021,38(06):170.[doi:10.19815/j.jace.2021.08048]

备注/Memo

备注/Memo:
收稿日期:2021-08-15
基金项目:国家自然科学基金项目(52090081,51938008); 中铁十五局科研项目[CR15CG-ZH-HQMZSD-2021-00001(KJ)]
作者简介:宋棋龙(1998-),男,广东梅州人,工学硕士研究生,E-mail:2060471029@email.szu.edu.cn。
通信作者:苏 栋(1978-),男,福建永定人,教授,工学博士,E-mail:sudong@szu.edu。
更新日期/Last Update: 2021-11-01