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建立一系列等间距移动荷载作用下悬浮隧道的动力学模型,将悬浮隧道管体简化为两端设有阻尼的弹性支撑梁,通过伽辽金法(Galerkin法)求解悬浮隧道管体的运动方程,数值模拟悬浮隧道管体的跨中位移时程响应,分析张力腿竖向刚度、移动荷载大小、移动速度、行车间距对悬浮隧道管体跨中位移的影响。结果表明:张力腿竖向刚度对悬浮隧道管体位移响应的影响最明显;移动荷载大小和速度以及行车间距也会显著影响悬浮隧道管体的跨中位移。研究结论为未来悬浮隧道的研究和建设提供重要的理论参考。
A series of dynamic models of suspended tunnel under equal distance moving load are established. The suspended tunnel tube is simplified as a flexible supporting beam with damping at both ends. The equations of motion of the suspended tunneling pipe body are solved by the Galerkin method , Numerical simulation of the mid-span displacement time-history response of the suspended tunneling pipe body, the influence of the vertical stiffness of tension leg, moving load size, moving speed and driving distance on mid-span displacement of the suspended tunneling pipe body are analyzed. The results show that the vertical stiffness of tension leg has the most obvious influence on the displacement response of the suspended tunnel pipe. The size and speed of the moving load and the distance between the trains also significantly affect the midspan displacement of the suspended tunnel pipe. The conclusion of the study provides important theoretical reference for the future research and construction of suspended tunnel.