| 地铁盾构区间穿越铁路站场设计与施工分析 |
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| 引用本文： | 贺斯进,蔺云宏.地铁盾构区间穿越铁路站场设计与施工分析[J].现代隧道技术,2012,49(3):166-170. |
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| 作者姓名： | 贺斯进 蔺云宏 |
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| 作者单位： | 广州地铁设计研究院有限公司,广州,510010 |
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| 摘 要： | 文章以郑州地铁1号线火车站站至二七广场站盾构区间隧道为背景,对隧道施工中的特级风险源——区间下穿国铁站场路段的施工过程进行了三维仿真数值模拟。按照国家相关规范标准,两轨面间的差异沉降不得大于5 mm,这对地铁下穿段的施工提出了较高要求。数值模拟计算结果表明,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,从而保证既有铁路的运营安全。
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| 关 键 词： | 盾构隧道 下穿铁路 沉降控制 注浆加固 |
Influence of Metro Shield Driving under Railway Yard and Construction Design |
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| He Sijin
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Lin Yunhong.Influence of Metro Shield Driving under Railway Yard and Construction Design[J].Modern Tunnelling Technology,2012,49(3):166-170. |
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| Authors: | He Sijin Lin Yunhong |
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| Institution: | He Sijin Lin Yunhong(Guangzhou Metro Design Research Institute Co.,Ltd.,Guangzhou 510010) |
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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 railway yard 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,ensuring the operation safety of existing railways. |
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| Keywords: | Shield tunnel Underpassing the railway yard Settlement control Grouting reinforcement |
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