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基于三维有限元模型的小净距隧道施工力学分析

, PP. 138-145

Keywords: 隧道工程,施工力学,有限元,小净距隧道,围岩压力

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Abstract:

针对Ⅲ级围岩,利用弹塑性三维有限元模型分析了小净距隧道在不同净距下隧道围岩、中隔墙、锚杆及初衬的受力性状。结果表明,两洞围岩应力终值不同,后行洞施工会造成中隔墙应力集中,其应力集中系数随净距减小而增大,应力峰值点位由拱腰与墙脚趋于起拱线;后行洞开挖使先行洞侧围岩松动区扩大,引起中隔墙内锚杆轴向应力增加,对其他部位锚杆受力影响很小;后行洞施工增加先行洞衬砌环向压力,但不会增加衬砌环向负弯矩。对于Ⅲ级围岩,隧道的最小净距取0.5B是合适的,在此净距下,两洞掌子面间的最小间距约为0.5B。

References

[1]  [J].Underground Space,2004,24(3):380-385.
[2]  张永兴,胡居义,何青云,等.基于强度折减法小净距隧道合理净距的研究
[3]  [J].Hydrogeology and Engineering Geology,2006,33(3):64-67.
[4]  胡元芳.小线间距城市双线隧道围岩稳定性分析
[5]  [J].岩石力学与工程学报,2002,21(9):1 335-1 338.HU Yuan-fang.Stability Analysis of Surrounding Rocks of Double-hole Urban Tunnel with Small Interval
[6]  [J].Chinese Journal of Rock Mechanics and Engineering,2002,21(9):1 335-1 338.
[7]  晏启祥,何川,姚勇.软岩隧道施工特性及其动态力学行为研究
[8]  [J].Journal of Highway and Transportation Research and Development,2005,22(8):61-64.
[9]  刘艳青,钟世航,卢汝绥,等.小净距并行隧道力学状态的试验研究
[10]  [J].岩石力学与工程学报,2000,19(5):590-594.LIU Yan-qing,ZHONG Shi-hang,LU Ru-sui,et al.Experimental Study on Mechanical Characteristics of Twin Tunnels with Small spacing
[11]  [J].Chinese Journal of Rock Mechanies and Engineering,2000,19(5):590-94.
[12]  [J].Tunneling and Underground Space Technology,2006,21:119-132.
[13]  姚勇,田志宇.并设小净距隧道中岩墙力学特征及加固措施研究
[14]  [J].工业建筑,2006,36(4):57-60.YAO Yong,TIAN Zhi-yu.Study on Mechanical Behavior and Reinforeing Measures of Middle Rock Wall of Parallel Tunnel with Small Interval
[15]  [J].Industry Construction,2006,36(4):57-60.
[16]  唐仪兴,张玉军.近距离双隧道开挖与支护的稳定性有限元计算
[17]  [J].岩土力学,1999,20(1):87-92.TANG Yi-xing,ZHANG Yu-jun.Plane Visco-elasto-plastic FEN Calculation for the Stability of the Excavation and Lining Structure of a Nearby Double-Tunnel
[18]  [J].Engineering Blasting,2000,6(1):49-55.
[19]  谭忠盛.杨小林,王梦恕.复线隧道施工爆破对既有隧道的影响分析
[20]  [J].岩石力学与工程学报,2003,22(2):281-285.TAN Zhong-sheng,YANG Xiao-lin,WANG Meng-shu.Effect of Blast in Double Line Tunnel on Existing Tunnel
[21]  [J].China Journal of Rock Mechanics and Engineering,2003,22(2):281-285.
[22]  FRANZIUS J N,POTTS D M.Influence of Mesh Geometry on Three-dirnemional Finite Element Analysis of Tunnel Excavation
[23]  [J].International Journal of Geomechanics,2005(9):256-266.
[24]  MOROUEH H,SHAHROUR I.A full 3-D Finite Element Analysis of Tunneling:Adjacent Smictures Interaction
[25]  胡庆安,夏永旭,王文正.双连拱隧道施工过程的三维数值模拟.长安大学学报(自然科学版)
[26]  [J],2005,25(1):48-50,76.HU Qing-an,XIA Yong-xu,WANG Wen-zheng.3D Numerical Simulation on Double-arch Tunnel's Construction Ptocess
[27]  [J].Journal of Chang'an University(Natural Science Edition),2005,25(1):48-50,76.
[28]  刘伟,靳晓光,陈少华.高速公路小净距隧道合理净距的探讨
[29]  [J].地下空间,2004,24(3):380-385.LIU Wei,JIN Xiao/-guang,CHENG Shao-hua.Investigation on Reasonable Clear Interval of Small-interval Tunnel for the Freeway
[30]  [J].水文地质与工程地质,2006,33(3):64-67.ZHANG Yong-xing,HU Ju-yi,HE Qing-yun,et al.On Rational Clear Spacing of Tunnel with Small Clear Spacing Based on Strength Reduction Technique
[31]  [J].岩石力学与工程学报,2006,25(3):572-577.YAN Qi-xiang,HE Chuan,YAO Yong.Study on Construction Characteristic and Dynamic Behavior of Soft Rock Tunnel
[32]  [J].Chinese Journal of Rock Mechanics and Engineering,2006,25(3):572-577.
[33]  靳晓光,刘伟,郑学贵,等.小净距偏压公路隧道开挖顺序优化
[34]  [J].公路交通科技,2005,22(8):61-64.JIN Xiao-guang,LIU Wei,ZHENG Xue-gui,et al.Optimization of Excavating Sequence for Closely Spaced Bias Doubletube Tunnels
[35]  LEE C J,WU B R,CHEN H T,et al.Tunnel Stability and Arching Effects During Tunneling in Soft Clayey Soil
[36]  [J].Rock and Soil Mechanics,1999,20(1):87-92.
[37]  刘慧.招宝山超小净距双线隧道的安全控爆研究
[38]  [J].工程爆破,2000,6(1):49-55.LIU Hui.Study on Safety of Controlled Blasting of Zhaobaoshan Twin Tunnel with Ninishort Separation
[39]  [J].Computer and Geotechnics,2003,30:245-253.

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