摘要
本文通过在北京地铁区间隧道中所进行的现场试验,获得了衬砌若干控制点以及附近一座地面风亭两个控制点的动态反应,并对其进行了频谱分析。根据轨道加速度测试数据和分析车辆体系的振动,得到了列车荷载的模拟数定表达式。进而采用有限元法分析了隧道和周围土体体系的动力性态。分析结果表明对于若干测点的实测和计算加速度值符合良好。文中还给出了一些动态反应的预测数值。
Measurements were carried out in a running tunnel of Beijing subway to obtain the dynamic responses at some specified points on the tunnel lining and also on a ventilation kiosk nearby. A frequency spectral analysis was performed and a simulated deterministic expression of train loading was obtained by analysing the vibration of the carriage system. FEM was then adopted to study the dynamic behaviour of the tunnel-mass system. Results indicate that the calculated acceleration components at some specified points agree with that of the measured well enough. Some quantitative values of the responses are also predicted.
出处
《土木工程学报》
EI
CSCD
北大核心
1990年第2期21-28,共8页
China Civil Engineering Journal
