| 盾构长距离下穿铁路股道引起的地表沉降分析 |
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| 引用本文： | 肖立,张庆贺.盾构长距离下穿铁路股道引起的地表沉降分析[J].上海交通大学学报,2011,45(5):672-676. |
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| 作者姓名： | 肖立 张庆贺 |
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| 作者单位： | (同济大学 岩土及地下工程教育部重点实验室， 地下建筑与工程系， 上海 200092) |
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| 摘 要： | 以天津津滨轻轨天津站至七经路站的盾构施工区间工程为对象，对多条铁路轨道下，盾构长距离推进过程中引起的地表变形进行了三维有限元数值模拟，根据模拟结果分析了盾构施工导致沿盾构方向和垂直于盾构方向的地表沉降量，总结了盾构施工各阶段发生的地表沉降变化规律；研究了盾构掘进对地表的扰动范围；模拟和分析了不同工况下盾构施工引起的地表沉降差异.结果表明，数值计算的地表最大沉降量在18~20 mm，与其监测值较吻合，注浆量对地表沉降的影响比注浆压力和土舱压力显著.
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| 关 键 词： | 盾构施工 铁路轨道 地表沉降 施工参数 数值模拟 |
| 收稿时间： | 2010-09-21 |
Study on Ground Settlement Caused by Shield Tunneling Long Distance Across Multi-tracks |
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| XIAO Li,ZHANG Qing-he.Study on Ground Settlement Caused by Shield Tunneling Long Distance Across Multi-tracks[J].Journal of Shanghai Jiaotong University,2011,45(5):672-676. |
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| Authors: | XIAO Li ZHANG Qing-he |
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| Affiliation: | (Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China) |
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| Abstract: | Based on the bid-section of Binhai mass transit from Tianjin station to Qijing road station,3D-FEM was put forward to simulate shield tunneling long distance under multi-tracks of railway.According to the simulation results,settlement of ground surface along and perpendicular to the shield tunnel were analyzed.The disturbance area of ground and the settlement ratio dedicated by first tunnel and second tunnel were studied.The ground settlements caused by tunneling in different conditions were simulated and s... |
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| Keywords: | shield tunneling railway track ground settlement tunneling parameters numerical modeling |
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