| 方忠强,王涛,李浩,王新刚.苏州凤凰山连拱加小净距隧道计算[J].现代交通技术,2010,(1):60-62 |
| 苏州凤凰山连拱加小净距隧道计算 |
| Calculation Analysis of Multi-arch and Small Spacing Tunnels in Suzhou Fenghuang Mountain |
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| DOI： |
| 中文关键词: 连拱隧道 小净距隧道 有限元 爆破施工 |
| 英文关键词:multi-arch tunnel small spacing tunnel finite element blasting construction |
| 基金项目: |
| 方忠强 王涛 李浩 王新刚 |
| 江苏省交通规划设计院有限公司,江苏南京210005 |
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| 中文摘要: |
| 苏州市凤凰山隧道属于软弱围岩中浅埋大跨度连拱加小净距隧道，且隧道穿越凤凰山公墓区，隧道上方公墓密集，对隧道设计和施工技术要求很高。基于地层一结构法，用有限元对隧道施工过程进行模拟，重点分析了围岩位移场和应变场以及初期支护、锚杆和二次衬砌的受力，分析隧道横断面危险点，在设计中采取相应安全措施，并优化开挖工法，计算确定隧道爆破施工和机械开挖的埋深分界点。 |
| 英文摘要: |
| Fenghuang mountain tunnels are shallow covered multi-arch and small spacing tunnels with large span in soft-weak surrounding rock,and tunnels under pass Fenghuang mountain cemetery on which graves are intensive. The project is very strict to design and construction.Based on layer-structure method,the construction is simulated by finite element method,and the displacement and strain of surrounding rock,the internal force of primary lining,anchor stocks and secondary lining are analyzed. The critical sections... |
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