下穿既有铁路管涵顶进施工的变形分析与安全控制研究
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  • 英文篇名:Study on the Analysis of Deformation and Safety Control About Jacking Construction of Pipe Culverts Underneath Existing Railway
  • 作者:曹坤阳 ; 冉志红 ; 林帆 ; 张静 ; 段佳宏 ; 高玄 ; 李能
  • 英文作者:CAO Kun-yang;RAN Zhi-hong;LIN Fan;ZHANG Jing;DUAN Jia-hong;GAO Xuan;LI Neng;School of Architecture and Planning,Yunnan University;
  • 关键词:下穿铁路 ; 管涵 ; 沉降 ; 顶进施工 ; 监测
  • 英文关键词:underneath railway;;pipe culvert;;settlement;;jacking construction;;monitor
  • 中文刊名:JMDB
  • 英文刊名:Journal of Jiamusi University(Natural Science Edition)
  • 机构:云南大学建筑与规划学院;
  • 出版日期:2018-11-15
  • 出版单位:佳木斯大学学报(自然科学版)
  • 年:2018
  • 期:v.36;No.157
  • 基金:国家自然科学基金(51208452);; 云南省交通厅科技项目(云交科2016(A)02)
  • 语种:中文;
  • 页:JMDB201806003
  • 页数:5
  • CN:06
  • ISSN:23-1434/T
  • 分类号:8-12
摘要
管涵道下穿既有铁路施工时势必会引起周围地层移动,影响铁路正常运营。针对不同土质和不同管涵的埋深建立三维数值模型。结合中缅管道昭通支线天然气管涵工程下穿沪昆铁路工程为研究对象,通过MIDAS GTS NX数值模拟软件对施工过程进行模拟分析,利用JMDL-62XX系列智能数码静力水准仪实时监控施工期间路基沉降。重点研究顶管施工对既有轨道和路基的变形规律,对比数值模拟结果和监控数据得出两者沉降趋势一致,施工期间最大沉降和残余形变分别为-6. 7mm和-4. 48mm,验证了该工程的安全性,对同类工程的施工具有指导意义。
        When a pipe culvert is constructing underneath existing railway,it will inevitably cause the surrounding stratum to move and affect the normal operation of the railway. According to different soil behavior and buried depths of pipe culverts,three-dimensional numerical model is established. The natural gas pipe culvert project of Zhaotong branch underneath the Shanghai-Kunming railway is taken as the research object,its constructing process is taken simulation analysis by MIDAS GTS NX. Meanwhile,the intelligent digital static level gages of JMDL-62 XX is used to monitor the subgrade settlement during construction. The research focuses on the deformation law of the existing rails and subgrade. Comparing between the results of simulation analysis and monitor data,it shows the tendency of them is same. And the maximum settlement and residual deformation during construction are-6. 7 mm and-4. 48 mm respectively. The paper verifies the safety of the project,and has guiding significance for the construction of similar projects.
引文
[1]余彬泉.顶管施工技术[S].北京:人民交通出版社,1998.
    [2]朱正国,李兵兵,李文江,等.新建铁路隧道下穿既有铁路施工引起的地表沉降控制标准研究[J].中国铁道科学,2011,32(05):78-82.
    [3] R B Peck. Deep Excavations and Tunneling in Soft Ground[A].Proceedings of 7th Int. Conf. SMFE. Mexico City. State-ofthe-Art[C]. 1969:225-90.
    [4]中华人民共和国铁道部.铁路线路修理规则[M].北京:中国铁道出版社,2006.
    [5]工程地质手册第四版[S].北京:中国建筑工业出版社,2006.
    [6]铁路桥涵设计规范(TB10002-2017).中华人民共和国国家铁路局.

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