摘要
铁路隧道建成后,运营期在高速列车循环振动荷载作用下,软土围岩有可能出现液化而导致隧道变形破坏.首先进行了列车振动荷载的模拟,确定出列车振动荷载的时程曲线,然后采用了适合岩土工程分析的大型有限差分法软件FLAC3D进行清水隧道出口段在列车振动荷载作用下围岩液化的可能性研究,得出了一些结论,为隧道施工及运营期的维护提供了有益的参考依据.
A rock-soil railway tunnel may show a fiquefaction phenomenon under train dynamic vibration load during the operational period. Train dynamic vibration load was first simulated. Based on the simulation vibration load, a vibration load - time curve was obtained. The rock-soil railway tunnel liquefaction probability under train dynamic vibration load of the Qingshui railway tunnel was researched by using the poplar finite difference software FLAC3D. Finally some conclusions were obtained which is valuable for tunnel construction and tunnel maintenance during the operational period.
出处
《山东大学学报（工学版）》
CAS
2008年第1期84-87,112,共5页
Journal of Shandong University（Engineering Science）
关键词
隧道
列车荷载
液化
时程曲线
有限差分
tunnel
train vibration load
liquefaction
time interval curve
finite difference method
