地铁列车荷载作用下隧道的静动力响应分析

Analysis on static and dynamic response under subway metro train load

以某地铁区间隧道为研究对象,依照列车动荷载激励力公式,设计列车振动模型装置,观测了隧道衬砌模型和周围介质在静荷载及列车动荷载作用下的应变、加速度等力学参数,分析了动荷载作用下隧道结构的受力状态,并和初始静应力做了比较,得出了一些有指导意义的结论。

Taking subway transit tunnels as the studying object, according to train dynamic load simulation formula, it designs train vibration model device, detects the strain and acceleration and other mechanical properties of the tunnel lining model and surrounding medium under the static load and train load, analyzes the mechanical situation of the tunnel structure under the dynamic load, and compares it to the initial static stress, finally achieves some useful conclusions