| 新建铁路路基上跨既有隧道安全性评估 |
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| 引用本文： | 张健.新建铁路路基上跨既有隧道安全性评估[J].中南公路工程,2012(4):37-39,143. |
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| 作者姓名： | 张健 |
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| 作者单位： | 中铁隧道股份有限公司,河南郑州450003 |
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| 基金项目： | 国家自然科学基金资助项目（50908234） |
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| 摘 要： | 依据福州罗源湾北岸铁路支线疏解线以路基形式近距离上跨既有杭深线飞鸾隧道洞身顶部的工程实例，运用有限差分析数值计算软件FLAC^3D进行三维数值模拟分析，研究了新建上跨铁路运营期间列车静载作用下飞鸾隧道结构的安全性及位移的稳定性。研究结果表明运营期间列车静载对下部已有隧道的影响在安全范围之内，为类似工程的修建提供了可靠的参考依据。
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| 关 键 词： | 铁路隧道 上穿 列车静载 数值模拟 安全性评估 |
The Safety Assessment of New Railway Embankment on the Cross-tunnel |
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| ZHANG Jian.The Safety Assessment of New Railway Embankment on the Cross-tunnel[J].Central South Highway Engineering,2012(4):37-39,143. |
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| Authors: | ZHANG Jian |
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| Institution: | ZHANG Jian (China Railway Tunnel Group Co. Ltd. , Zhengzhou, Henan 450003, China) |
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| Abstract: | Based on the project of North Shore railway extension, Luoyuan Bay, whose Ease-line is in the form of subgrade, on the top of body of the Feiluan Tunnel. Using finite difference numerical analysis software-FLAC3V-dynamic analysis module to analyze the dynamic response of the train, studying the safety of the Feiluan Tunnel structure and the stability of displacement, which is under the static load during the new cross-rail operation, the results show that during the operation, the effects of the train＇s static load to the lower part exiting tunnel is within the safe range. At the same time, put forward some reliable conclusions and recommendations through the study. |
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| Keywords: | railway tunnel upper cross static load of the train numerical simulation safety as-sessment |
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