| 地铁盾构隧道下穿京津城际高速铁路影响分析 |
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| 引用本文： | 徐干成,李成学,王后裕,赵月,胡萍.地铁盾构隧道下穿京津城际高速铁路影响分析[J].岩土力学,2009,30(Z2):269-272. |
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| 作者姓名： | 徐干成 李成学 王后裕 赵月 胡萍 |
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| 作者单位： | 1.空军工程设计研究局，北京 100068；2.铁道部第三勘查设计院集团有限公司，天津 300251 |
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| 摘 要： | 以北京地铁14号线马家堡东路站–永定门外大街站盾构区间隧道为背景，对隧道施工中的特级风险源--区间下穿京津城际铁路段的施工过程进行了三维仿真数值模拟。京津城际列车最大时速可达350 km/h，两轨面间的差异沉降不得大于5 mm，对地铁下穿段的施工提出了较高要求。数值模拟的计算结果表明，通过对下穿段一定范围内的土体进行注浆加固可以有效控制盾构隧道施工引起的既有铁路纵向和横向沉降及不均匀沉降，从而保证既有铁路安全运营不受影响；同时，计算获得的管片后注浆参数及盾构机内土舱压力为隧道设计、施工提供了重要的参考依据。
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| 关 键 词： | 盾构隧道 下穿铁路 沉降控制 注浆加固 |
| 收稿时间： | 2009-08-18 |
Analysis of influence of metro shield tunneling crossing underneath high speed railway |
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| XU Gan-cheng,LI Cheng-xue,WANG Hou-yu,ZHAO Yue,HU Ping.Analysis of influence of metro shield tunneling crossing underneath high speed railway[J].Rock and Soil Mechanics,2009,30(Z2):269-272. |
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| Authors: | XU Gan-cheng LI Cheng-xue WANG Hou-yu ZHAO Yue HU Ping |
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| Institution: | 1.The Air Force Engineering Design & Research Institute, Beijing 100068, China; 2.The Third Survey & Design Group Co. Ltd., Ministry of Railway, Tianjin 300251, China |
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| Abstract: | A numerical simulation is carried out to study the settlement of ground caused by the construction of a shield tunnel. As a high speed railway is just above the tunnel and the differential settlement of the steel rails is limited in 5 mm; it requires high quality of the tunnel construction. The simulation results indicate that the grouting reinforcement to the stratum between the railway and the tunnel is an effective way to control the settlement of ground; and the values of several parameters gained in the calculation can serve for reference in the construction. |
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| Keywords: | shield tunnel cross below the railway settlement control grouting reinforcement |
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