自行走悬索桥主缆检修车抗风稳定性研究

Study on wind resistant stability of main cable inspection vehicle of self-walking suspension bridge

以某悬索桥主缆检修车为研究对象,基于有限元分析软件ANSYS建立了检修车抗风稳定性研究有限元模型。采用谐波叠加法模拟脉动风压时程样本并对主缆检修车进行抗风稳定性研究。研究结果表明:检修车危险节点的应力峰值、最大振幅几乎不随接触面积比的改变而变化。增大接触面积比能够减小检修车位移、应力的峰值,使检修车抗风稳定性增强。

Taking the main cable maintenance vehicle of a suspension bridge as the research object, the wind resistant stability model of the inspection vehicle was established by ANSYS. Then wind resistant stability was researched through simula- ting the fluctuating wind pressure sample by harmony superposition method. The results show that with the increase of tile contaet area ratio, the peak value of the displacement and stress of inspection vehicle reduces,anti wind resistant stability of inspection vehicle improves.