| 下穿高速公路浅埋大跨度黄土隧道施工措施研究 |
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| 引用本文： | 李健,谭忠盛,喻渝,倪鲁肃.下穿高速公路浅埋大跨度黄土隧道施工措施研究[J].岩土力学,2011,32(9):2803-2809. |
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| 作者姓名： | 李健 谭忠盛 喻渝 倪鲁肃 |
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| 作者单位： | 1. 北京交通大学土建学院,北京,100044
2. 铁道第二勘测设计院,成都,610031 |
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| 基金项目： | 铁道部重大科技研发计划资助项目(No.2005K001-D(G)-2) |
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| 摘 要： | 依托郑西客运专线阌乡隧道,开展浅埋大跨黄土隧道优化施工研究。对隧道进入下穿高速公路前的地表沉降,拱顶下沉及初支钢架应力进行现场监测,结果表明,土体沉降及初支应力不能得到有效控制,现有的施工方案无法满足下穿段施工安全要求,需要及时对其调整;经综合分析,提出了减小开挖面积、侧导多台阶开挖、预留核心土、快速封闭及加强初期支护等一系列优化措施,并采用数值计算软件FLAC3D验证其安全性和可靠性。通过现场实施及监测结果的反馈,证明优化措施效果明显,保障了阌乡隧道顺利下穿连霍高速公路。研究成果为类似施工中采取相应措施控制土体沉降、保护周边建筑设施的安全使用提供了依据。
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| 关 键 词： | 浅埋暗挖 下穿施工 黄土隧道 现场监测 施工优化 |
| 收稿时间： | 2010-05-31 |
Research on construction procedure for shallow large-span tunnel undercrossing highway |
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| LI Jian,TAN Zhong-sheng,YU Yu,NI Lu-su.Research on construction procedure for shallow large-span tunnel undercrossing highway[J].Rock and Soil Mechanics,2011,32(9):2803-2809. |
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| Authors: | LI Jian TAN Zhong-sheng YU Yu NI Lu-su |
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| Institution: | 1. School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China; 2. The Second Survey and Design Institute of China Railway, Chengdu 610031, China |
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| Abstract: | Wenxiang tunnel for Zheng-Xi Special Passenger Railway has been done a series of research on optimizing the construction method for shallow large-span loess tunnel.According to the field monitoring of ground settlement,vault settlement and primary support stress of the tunnel section before tunnel undercrossing the Lian-Huo expressway.The result indicates that soil settlement and primary support stress can not be controlled very well;and the current construction scheme needs to be reformed since it can not ... |
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| Keywords: | shallow burying mining undercrossing construction loess tunnel field monitoring construction optimization |
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