| 基于数值分析的大跨隧道不同工序下地层特性研究 |
| |
| 引用本文： | 党超,刘若文,杨校辉,马丽慧. 基于数值分析的大跨隧道不同工序下地层特性研究[J]. 现代交通技术, 2014, 0(4): 55-58 |
| |
| 作者姓名： | 党超 刘若文 杨校辉 马丽慧 |
| |
| 作者单位： | 四川省冶金地质勘查局六0六大队;四川省冶金地质勘查局六0六大队;兰州理工大学土木工程学院;四川省冶金地质勘查局六0六大队 |
| |
| 摘 要： | 利用有限差分软件FLAG3D,建立了浅埋大跨地铁隧道开挖模型.通过分析浅埋大跨隧道分别采用台阶法和双侧壁导坑法不同施工工序下的地层应力位移特性,得出了针对浅埋大跨隧道开挖,采用双侧壁导坑法优于台阶法,并说明了双侧壁导坑法能有效控制变形的理论依据.将数值模拟与现场测试试验结果对比,提出了优化的施工方案,对大跨浅埋隧道类似工程施工具有一定的指导借鉴作用.
|
| 关 键 词： | 数值分析 大跨隧道 施工工序 地层特性 |
Study on Formation Characteristics of Large-span Tunnel with Different Processes Based on Numerical Analysis |
| |
| Affiliation: | Dang Chao ,Liu Ruowen ,Yang Xiaohui ,MA Lihui ( 1. The 606 brigade metallurgical geological prospecting bureau of Sichuan, Chengdu 611730, China; 2.School of Civil Engineering, Lanzhou University of Technology, Gansu 730050, China ) |
| |
| Abstract: | This research establishes the shallow buried large span underground tunnel excavation model by using finite difference software FLAC3D.Through the analysis of formation stress and displacement characteristics about shallow buried large span tunnel with bench cut method and double wall pilot tunnel method under different construction process, it can be concluded that the double side gate method is superior to the step method, and it also illustrates theoretical basis of the double side heading method can effectively control the deformation. This article puts forward the optimization of construction scheme, through the contrastive analysis of the numerical simulation and field test results, which plays a certain guiding reference part for some similar engineering. |
| |
| Keywords: | numerical analysis large-span tunnel construction procedure formation characteristics |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《现代交通技术》浏览原始摘要信息 |
|
点击此处可从《现代交通技术》下载全文 |
|
