深厚软土地层盾构隧道的施工响应

详细信息    查看官网全文

• 英文论文题名：Construction Response of Shield Tunnel in Deep Soft Soil Layer
• 论文作者：孙齐 ; 戴志成 ; 谢宏明 ; 封坤 ; 蒋颖
• 英文论文作者：SUN Qi ; DAI Zhicheng ; XIE Hongming ; FENG Kun ; JIANG Ying ; Key Laboratory of Transportation Tunnel Engineering ; Ministry of Education ; School of Civil Engineering ; Southwest Jiaotong University ; China Railway Siyuan Survey and Design Group Co. ; Ltd.
• 年：2016
• 作者机构：西南交通大学交通隧道工程教育部重点实验室土木工程学院;中铁第四勘察设计院集团有限公司;
• 论文关键词：深厚软土地层 ; 盾构隧道 ; 地表沉降 ; 数值分析 ; 既有隧道
• 英文论文关键词：Deep soft soil layer ; Shield tunnel ; Surface settlement ; Numerical analysis ; Existing tunnel
• 会议召开时间：2016-10-24
• 会议录名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会论文集
• 语种：中文
• 分类号：U455.43
• 学会代码：OGTY
• 会议名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会
• 会议地点：中国四川成都
• 主办单位：中国土木工程学会隧道及地下工程分会
• 学会名称：中国土木工程学会
• 页数：9
• 文件大小：2930k
• 原文格式：O
• 会议级别：全国

摘要

盾构隧道施工会引起地层扰动,从而引起地表沉降、使其周围结构物产生不均匀变位和附加应力等影响。因此,深入研究盾构法施工对周围环境影响的机理,来确保盾构机的顺利掘进和减少对周围结构物的影响显得非常必要和紧迫。通过数值分析的方法,对盾构掘进全过程进行了动态模拟,并探讨了盾构隧道施工对地层横、纵断面内地层的影响以及对临近隧道的影响。计算结果表明:隧道埋深越大、间距越大时,地表沉降越小;地表沉降槽的形状和埋深与隧道间距比值有关,其比值较大时,呈v型,比值较小时,呈w型;纵断面内地表的隆起值随顶进力的增大而增大;平行隧道右线隧道盾构施工时,在掌子面所在截面前方,既有隧道左右两侧向内移动即对既有隧道侧向加压,既有隧道上下两侧向外移动即对既有隧道竖向卸载。
The shield tunnel construction will cause the formation disturbance,which causes the ground surface settlement,causes the surrounding structure to produce the uneven change and the additional stress and so on.Therefore,it is very necessary and urgent to study the influence of shield construction on the surrounding environment,to ensure the smooth tunneling of the shield machine and reduce the impact on the surrounding structures.By means of numerical analysis,the dynamic simulation of the whole process of shield tunneling is carried out,and the influence of the shield tunnel construction on the formation and the formation of the longitudinal section and the influence to the adjacent tunnel are discussed.The calculation results show that the larger the tunnel depth,the smaller the distance between the surface and the ground surface;The shape and depth of the surface settlement trough are related to the ratio of the tunnel spacing,and the ratio of the surface settlement is V type,the ratio is relatively small,and the ratio is W;The uplift value of the surface of the longitudinal section increases with the increase of the jacking force;Parallel tunnel right line of shield tunnel construction and tunnel face in place in front of the section,both inward movement of the left and the right sides of the tunnel on both side of the tunnel,pressure,tunnel on both sides of the outward movement is on the existing tunnel vertical unloading.

引文

[1]康佐,代光辉.地铁盾构法隧道正交下穿施工对既有隧道影响分析[J].隧道建设,2014,34(10):931-936.KANG Zuo,DAI Guanghui.Shield Boring of Metro Tunnel Perpendicularly Crossing Underneath Existing Tunnel:Analysis on Influence of Shield Boring on Existing Tunnel[J].Tunnel Construction,2014,34(10):931-936.
    [2]马程昊,白晨光.盾构近接隧道施工对既有隧道管片受力影响分析[J].建筑科学,2012,28(增刊):250-252.MA Chenghao,BAI Chenguang.Effects on Internal Force Distribution of Existing Tunnels Segment in EPB Shield Approaching Construction[J].Architecture Science,2012,28(Supp):250-252.
    [3]赵旭峰,王春苗,孙景林,等.盾构近接隧道施工力学行为分析[J].岩土力学,2007,28(2):409-414.ZHAO Xufeng,WANG Chunmiao,SUN Jinglin,et,al.Analysis of mechanical action of shield driving for approaching excavation[J].Rock and Soil Mechanics,2007,28(2):409-414.
    [4]李磊,张孟喜,吴惠明,等.近距离多线叠交盾构施工对既有隧道变形的影响研究[J].岩土工程学报,2014,36(6):1036-1043.LI Lei,ZHANG Mengxi,WU Huiming,et,al.Influence of short-distance multi-line overlapped shield tunneling on deformation of existing tunnels[J].Chinese Journal of Geotechnical Engineering,2014,36(6):1036-1043.
    [5]刘树佳,张孟喜,吴惠明,等.新建盾构隧道上穿对既有隧道的变形影响分析[J].岩土力学,2013,34(增刊):399-405.LIU Shujia,ZHANG Mengxi,WU Huiming,et,al.Deformation effect on existing tunnels overlapped by new tunnel in lowerregion[J].Rock and Soil Mechanics,2013,34(Supp):399-405.
    [6]胡炜,曾东洋.平行盾构隧道施工地表变位影响因素研究[J].铁道工程学报,2007,102(3):50-55.HUWei,ZENG Dongyang.Research on the Influence of Ground-movementCaused by Parallel Shield TunnelConstruction[J].Journal of RailwayEngineering Society,2007,102(3):50-55.
    [7]涂川,张建新.天津软土地区小间距平行隧道盾构施工对地层沉降的影响[J].天津城建大学学报,2015,21(6):400-411.TU Chuan,ZHANG Jianxin.Influence of Small Spacing Parallel Shield Tunneling ofTianjin Soft Soil Area on Ground Settlement[J].Journal of Tianjin Chengjian University,2015,21(6):400-411.
    [8]王腾飞.盾构隧道近接施工对既有市政隧道的影响分析[J].交通科技,2011,246(3):44-47.WANG Tengfei.Analysis of the influence of shield tunnel construction on existing municipal tunnel[J].Transportation Science&Technology,2011,246(3):44-47.
    [9]方勇,何川.平行盾构隧道施工对既有隧道影响的数值分析[J].岩土力学,2007,28(7):1402-1406.FANG Yong,HE Chuan.Numerical analysis of effects of parallel shield tunneling on existent tunnel[J].Rock and Soil Mechanics,2007,28(7):1402-1406.
    [10]房明,刘镇,周翠英,等.新建隧道盾构下穿施工对既有隧道影响的三维数值模拟[J].铁道科学与工程学报,2011,8(1):67-72.FANGMing,LIUZhen,ZHOUCuiying,et,al.3D numerical simulation of influence of under crossing shield construction on existing tunnel[J].Journal of Railway Science and Engineering,2011,8(1):67-72.
    [11]张毅,房明.盾构隧道下穿既有隧道施工影响的三维数值模拟[J].广州建筑,2012,40(6):12-15.ZHANG Yi,FANG Ming.Study on Influence of Shield Tunnels Traversing Under Existing Tunnel by 3D Numerical Simulation[J].GUANGZHOU ARCHITECTURE,2012,40(6):12-15.