北京新机场线大断面暗挖隧道下穿京沪铁路施工影响数值分析
刘胜欢1杜明芳1易领兵2吕高乐3李帅兵4
Numerical Analysis of the Large Section Tunnel Excavation for Beijing New Airport Line Crossing under Beijing\|Shanghai Railway
LIU ShenghuanDU MingfangYI LingbingLYU GaoleLI ShuaibingLI YiboWANG ShuoWANG Qiang
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作者信息:1.河南工业大学土木建筑学院，450001，郑州；
2.中交铁道设计研究总院有限公司，100088，北京；
3.郑州地铁集团有限公司，450000，郑州；
4.上海城铁建筑科技有限公司，201818，上海
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Affiliation:College of Civil Engineering, Henan University of Technology, 450001, Zhengzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2020.08.030
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中图分类号/CLCN:U456.3+1
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栏目/Col:研究报告
摘要:
北京新机场线草桥站站后折返线大断面暗挖隧道工程下穿京沪铁路，由于下穿区域为砂卵石地层且京沪铁路对路轨控制标准要求较高，因此采用MADIS/GTS有限元软件对北京新机场线大断面暗挖隧道下穿京沪铁路的施工方案进行有限元分析。模拟计算结果表明，暗挖下穿施工对土层及轨道的影响在控制标准之内。北京地区相关暗挖施工工程的监测数据验证了所采用的有限元分析模型的可靠性。
Abstracts:
The large-section tunnel excavation project of Caoqiao Station turn back line on Beijing New Airport Line crosses under Beijing-Shanghai Railway. Because the underpass area consists of sandy pebble stratum, Beijing-Shanghai Railway line has higher requirements for rail control standards, MADIS/GTS finite element software is adopted to conduct finite element analysis on the construction scheme of the large-section tunnel excavation. The simulation calculation results show that the impact of the tunnel construction on the stratum and the track is within the control standard. The monitoring data for relevant mining constructions in Beijing have verified the reliability of the finite element analysis model adopted in this paper.
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