| 深基坑开挖对高速公路影响的三维优化分析 |
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| 引用本文： | 王飞.深基坑开挖对高速公路影响的三维优化分析[J].路基工程,2014,0(2):179-183. |
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| 作者姓名： | 王飞 |
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| 作者单位： | 安徽省交通规划设计研究院，合肥 230088 |
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| 摘 要： | 以合肥高铁南站#6风井基坑工程为背景，采用三维FLAC3D数值模拟手段，分析了不对称荷载下支护体系内力及变形规律以及对临近高速公路的影响。分析结果表明:基坑开挖导致南侧绕城高速路基出现较大沉降和侧向位移，存在一定的风险；优化后的基坑支护设计方案比原方案能够更好地控制变形，支护体系内力和稳定性等在安全范围之内；将基坑变形控制在一级基坑允许变形范围内，能够确保高速公路和基坑工程的安全。
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| 关 键 词： | 深基坑 开挖 高速公路 控制指标 FLAC3D 优化设计 |
| 收稿时间： | 2019-11-09 |
3D Optimization Analysis on Influence of Deep Foundation Pit Excavation on Highway |
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| Abstract: | Based on the foundation pit engineering for the No.6 ventilation shaft at the south station of Hefei high-speed rail, the influences of both the force inside the supporting system and the deformation law under unsymmetrical load on the adjacent highway were studied with FLAC3D numerical simulation. The results show that the foundation pit excavation leads to relatively large settlement and lateral displacement of the subgrade for the south beltway, causing certain risk; the optimized design of foundation pit support could control the deformation better than the original one, with the force inside the supporting system and the stability in a safe range; controlling the deformation in a scope allowed by Grade A foundation pit may secure the safety of highway and foundation pit engineering. |
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