| 孙自强,曹广勇,程桦.合肥地铁深基坑开挖对邻近高速公路沉降的影响[J].安徽建筑大学学报,2015,23(2):30-33 |
| 合肥地铁深基坑开挖对邻近高速公路沉降的影响 |
| Influence of Deep Excavation to The Surface of Adjacent Motorway |
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| DOI：10.11921/j.issn.2095-8382.20150206 |
| 中文关键词: 深基坑，高速公路，数值模拟，Midas |
| 英文关键词: Deep Excavation Motorway Numerical simulation Midas |
| 基金项目: |
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| 中文摘要: |
| 针对合肥地铁深基坑开挖对邻近高速公路沉降的影响，采用MidasGTS有限元数值计算软件进行分析，建立了考虑高速公路及基坑施工过程的三维有限元模型，研究了邻近高速公路在不同开挖阶段的最大沉降变化以及不同开挖阶段高速公路的路面沉降分布规律，研究表明：路面最大沉降位置始终在离基坑最近的一侧路面，最终沉降量为7.77mm，对路面安全没有造成影响；随着开挖的进行，沉降量和沉降影响范围不断增加，但增加速率越来越缓慢；研究所得到结论可用来指导未来的相似工程。 |
| 英文摘要: |
| For the deep foundation pit excavation of subway Hefei effect on adjacent highway settlement, by using the finite element method software-MidasGTS, a three-dimensional finite element model considering the motorway as well as the deep excavation process is established to analyze the influence of the deep excavation on adjacent motorway’s subsidence. The maximum subsidence of the adjacent motorway and the distribution of the subsidence in different steps are studied. The motorway’s maximum subsidence is at the edge of the foundation pit and the maximum subsidence is at 7.77mm were found. It doesn’t damage the motorway’s security. The amount and distribution’ size of subsidence gradually increases as the excavation process, but the speed of the increases gradually reduce. These conclusions can be used to guide the future similar projects. |
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