双线盾构隧道正交下穿既有铁路框架桥数值模拟分析
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- 英文论文题名：Numerical Simulation of Double Line Shield Tunnel Orthogonally Undercrossing Existing Railway Frame Bridge
- 论文作者：伍超 ; 汪辉武 ; 陈中天 ; 方勇
- 英文论文作者：WU Chao ; WANG Huiwu ; CHEN Zhongtian ; FANG Yong ; MOE Key Laboratory of Transportation Tunnel Engineering ; Southwest Jiaotong University
- 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;
- 论文关键词：地铁盾构 ; 铁路框架桥 ; 荷载 ; 沉降 ; 数值模拟
- 英文论文关键词：Metro shield ; Railway frame bridge ; Load ; Settlement ; Numerical simulation
- 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：8
- 文件大小：2121k
- 原文格式：O
- 会议级别：全国
摘要
在城市地铁修建中,难免出现新建隧道下穿铁路框架桥的情况。为研究新建双线盾构隧道施工对上方既有铁路框架桥的影响,以成都地铁5号线福宁路~五块石区间盾构隧道正交下穿既有铁路框架桥工程依托,采用三维有限元数值分析方法,研究在有无列车荷载两种情况下,双线盾构隧道穿越对铁路轨面沉降、框架桥竖向位移及侧向位移影响的规律,计算结果表明:轨面最大沉降为6.73mm,框架桥竖向位移最大为4.41 mm,侧向位移最大为7.82 mm;列车荷载对轨面沉降及框架桥竖向位移有较大影响,而对侧向位移影响不大,施工中应根据列车运行情况进行全面监测和必要的参数调整;对于双线盾构隧道,先行隧道引起的沉降值小于后行隧道引起的沉降值。此研究对类似盾构隧道下穿铁路框架桥工程的实施提出了建议。
In the construction of urban subway,new shield tunnels are often undercrossing existing railway frame bridge.In order to study the influence of new shield tunnel construction on existing railway frame bridge with reference to Chengdu Metro Line 5 Funing Road Station—Wukuaishi Station tunnel,three-dimensional finite element numerical analysis has been applied in this paper.Under two conditions of the train load,the influence of double line shield tunnel construction on the settlement of railway track,and on the vertical and lateral displacement of frame bridge has been studied.The results show that:the maximum settlement of the track is 6.73 mm,the maximum vertical displacement of the frame bridge is 4.41 mm,meanwhile the maximum lateral displacement is 7.82 mm;the train load has great influence both on the settlement of the track and the vertical displacement of frame bridge,while has little effect on the lateral displacement.During the construction,monitoring should be comprehensive and the parameters should be adjusted based on the condition of train operation;as for the double line shield tunnel,the settlement induced by the construction of former tunnel is smaller than the later one.This study can provide suggestions for the construction of shield tunnel undercrossing existing railway frame bridge.
In the construction of urban subway,new shield tunnels are often undercrossing existing railway frame bridge.In order to study the influence of new shield tunnel construction on existing railway frame bridge with reference to Chengdu Metro Line 5 Funing Road Station—Wukuaishi Station tunnel,three-dimensional finite element numerical analysis has been applied in this paper.Under two conditions of the train load,the influence of double line shield tunnel construction on the settlement of railway track,and on the vertical and lateral displacement of frame bridge has been studied.The results show that:the maximum settlement of the track is 6.73 mm,the maximum vertical displacement of the frame bridge is 4.41 mm,meanwhile the maximum lateral displacement is 7.82 mm;the train load has great influence both on the settlement of the track and the vertical displacement of frame bridge,while has little effect on the lateral displacement.During the construction,monitoring should be comprehensive and the parameters should be adjusted based on the condition of train operation;as for the double line shield tunnel,the settlement induced by the construction of former tunnel is smaller than the later one.This study can provide suggestions for the construction of shield tunnel undercrossing existing railway frame bridge.
引文
[1]许有俊,陶连金,李文博,范俊毅,王文沛.地铁双线盾构隧道下穿高速铁路路基沉降分析[J].北京工业大学学报,2010,36(12):1618-1623.XU Youjun,TAO Lianjin,LI Wenbo,FAN Junyi,WANG Wenpei.A Numerical Simulation Study on the Settlement Laws of the High-speed Railway's Subgrade Induced by the Construction of Twin Shield Tunnel[J].Journal of Beijing University of Technology,2010,36(12):1618-1623.
[2]张迪,周庆久,卓旭阳,姚捷.大型盾构隧道穿越铁路框架桥的影响分析[J].现代隧道技术,2013,50(6):131-138.ZHANG Di,ZHOU Qingjiu,ZHOU Xuyang,YAO Jie.Analysis of the Influence of a Large Shield Tunnel Passing Under a Railway Frame Bridge[J].Modern Tunnelling Technology,2013,50(6):131-138.
[3]李奇.盾构隧道下穿铁路框架桥施工控制及影响分析[J].市政技术,2015,33(2):225-228.LI Qi.Construction Control of Shield Tunneling through-under the Rail Frame Bridge and the Effects Analysis[J].Municipal Engineering Technology,2015,33(2):225-228.
[4]张金伟,徐东,苗润,李昂.地铁盾构隧道下穿铁路框架桥沉降控制研究[J].市政技术,2015,33(2):27-31.ZHANG Jinwei,XU Dong,MIAO Rui,LI Ang,Research of Settlement Control for Metro Shield Tunnel through under the Rail Frame Bridge[J].Municipal Engineering Technology,2015,33(2):27-31.
[5]晏成.盾构隧道下穿既有铁路框架桥工程安全性分析[J].铁道标准设计,2011,(7):84-87.YAN Cheng.Analysison Safety in Construction of Shield Tunnel Undergoing through Frame Bridge on Existing Railways[J].Railway Standard Design,2011,(7):84-87.
[6]周正宇.地铁邻近既有桥梁施工影响分析及主动防护研究[D].北京:北京交通大学,2012.ZHOU Zhengyu.Reaearch on Effect and the Active Protetion of Neighboring Exisiting Bridge with Subway Construction[D].Beijing:Beijing Jiaotong University,2012.
[2]张迪,周庆久,卓旭阳,姚捷.大型盾构隧道穿越铁路框架桥的影响分析[J].现代隧道技术,2013,50(6):131-138.ZHANG Di,ZHOU Qingjiu,ZHOU Xuyang,YAO Jie.Analysis of the Influence of a Large Shield Tunnel Passing Under a Railway Frame Bridge[J].Modern Tunnelling Technology,2013,50(6):131-138.
[3]李奇.盾构隧道下穿铁路框架桥施工控制及影响分析[J].市政技术,2015,33(2):225-228.LI Qi.Construction Control of Shield Tunneling through-under the Rail Frame Bridge and the Effects Analysis[J].Municipal Engineering Technology,2015,33(2):225-228.
[4]张金伟,徐东,苗润,李昂.地铁盾构隧道下穿铁路框架桥沉降控制研究[J].市政技术,2015,33(2):27-31.ZHANG Jinwei,XU Dong,MIAO Rui,LI Ang,Research of Settlement Control for Metro Shield Tunnel through under the Rail Frame Bridge[J].Municipal Engineering Technology,2015,33(2):27-31.
[5]晏成.盾构隧道下穿既有铁路框架桥工程安全性分析[J].铁道标准设计,2011,(7):84-87.YAN Cheng.Analysison Safety in Construction of Shield Tunnel Undergoing through Frame Bridge on Existing Railways[J].Railway Standard Design,2011,(7):84-87.
[6]周正宇.地铁邻近既有桥梁施工影响分析及主动防护研究[D].北京:北京交通大学,2012.ZHOU Zhengyu.Reaearch on Effect and the Active Protetion of Neighboring Exisiting Bridge with Subway Construction[D].Beijing:Beijing Jiaotong University,2012.