摘要
利用ANSYS有限元分析软件,考虑地应力的逐步释放,对某公路隧道软弱围岩标段的台阶法开挖支护进行了数值模拟,并对围岩和支护体系的变形和受力特点进行了分析,得到了拱顶沉降、洞内水平收敛以及支护结构内力变化规律,这为工程的顺利实施提供了依据和指导,可供类似工程参考。
Using ANSYS program,and in thought of releasing stress step by step,we simulate tunnel excavation and support by the bench cut method in the soft rock,and study the characteristics of stress and deformation of surrounding rock and supporting system,then get the development regularity according to time of vault crown settlement,horizontal convergence and supported structure force.It provides instruction for the project and other similar projects.
出处
《山西交通科技》
2008年第5期59-63,共5页
Shanxi Science & Technology of Transportation
关键词
软弱围岩
公路隧道
台阶法
数值模拟
soft rock
highway tunnel
bench cut method
numerical simulation
