摘要
采用无厚度接触单元模拟岩体中的节理,选取含1组节理且有隧道的岩质高仰坡,应用动力有限元法分别在水平地震、垂直地震以及水平与垂直地震同时作用下的全时程动力反应规律进行模拟.对岩质高仰坡的坡顶、坡腰、坡脚的位移、速度以及加速度进行比较,结果表明,在发生地震时,主要危险点在坡顶处.
The joints of rock mass is simulated by using the thickness of the contact element, we cnoose high rock slope with 1 group joints and tunnel to simulate the earthquake response with dynamic finite element method under conditions of horizontal, vertical and both horizontal and vertical input. The displacement, velocity, acceleration of the hill top, the back slope and the slope toe are calculated. The results show that the major risk point is in the back slope.
出处
《兰州交通大学学报》
CAS
2012年第3期8-11,共4页
Journal of Lanzhou Jiaotong University
基金
西部交通建设科技项目(2009318000102)
关键词
岩质高仰坡
节理
隧道
动力有限元
地震动力反应
high rock slope
joints
tunnel
dynamic finite element method
earthquake response
