| 单边扩帮特大跨公路隧道开挖稳定性分析 |
| |
| 引用本文： | 林镇洪.单边扩帮特大跨公路隧道开挖稳定性分析[J].铁道科学与工程学报,2009,6(4). |
| |
| 作者姓名： | 林镇洪 |
| |
| 作者单位： | 海南东环铁路有限公司,海南,海口,570125 |
| |
| 基金项目： | 国家自然科学基金资助项目(50808178) |
| |
| 摘 要： | 通过现场试验、理论分析及数值模拟计算,对深圳横龙山北隧道右线喇叭口扩帮段的围岩力学参数和动态施工力学进行研究,对扩挖修帮段进行深部位移监测得到反挖修帮造成的拱顶下沉和洞周水平收敛的实测数据,并基于神经网络BP模型反演隧道围岩力学参数.采用有限元软件对横龙山北隧道右线喇叭口扩帮段建立三维有限元模型,分析隧道各开挖阶段对地表沉降的影响以及研究隧道各开挖阶段对隧道拱顶、拱脚和竖墙脚各点应力的影响.
|
| 关 键 词： | 大跨公路隧道 力学参数反演 BP神经网络 动态施工力学 数值模拟 |
Stability analysis for large-span highway tunnel by side-expand excavation |
| |
| LIN Zhen-hong.Stability analysis for large-span highway tunnel by side-expand excavation[J].Journal of Railway Science and Engineering,2009,6(4). |
| |
| Authors: | LIN Zhen-hong |
| |
| Institution: | LIN Zhen-hong (Hainan Donghuan Railway Co Ltd,Haikou 570125,China) |
| |
| Abstract: | The mechanical parameter of the tunnel's surrounding rocks and dynamic construction mechanics were studied by theories analysis,numerical simulation and field measurement in the broadened segment of the right-way bell-mouth of Henglongshan north tunnel in Shenzhen.The deep displacement of surrounding rocks at broadened segment was monitored so as to acquire the numerical value for the settlement of vault and the horizontal convergence of the tunnel due to one-sided excavation.Based on the BP model of artifi... |
| |
| Keywords: | large-span road tunnel back-analysis of mechanical parameter BP artificial neural network dynamic construction mechanics numerical simulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
