跳车冲击下车桥耦合振动参数影响性分析

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中图分类号： U441+.3 文献标志码：A 文章编号：1000-4939（2025）03-0620-09

Abstract：The influence of vehicle bridge coupling response under vehicle jumping impact with different parameters was studied.The variable cros-section beam was divided into finite micro segments and the vibration equation of the bridge was obtained through force analysis.The 1/4 vehicle model was selected and the vibration equation of the vehicle was established by using the D'Alembert principle.Then the vehicle bridge coupled vibration equation was obtained and solved with the Newmark- β method.The results show that the stiffness of suspension and tire system has no significant effect on the displacement response of the bridge under vehicle jumping impact without considering the geometric nonlinearity.It is notthat the faster the vehicle speed is，the more obvious the vehicle bridge coupling displacement response is.The vehicle weight has a significant efect on the vehicle bridge coupling response.The displacement response is more intense as the vehicle becomes heavier.

Key words ：jumping impact;vehicle-bridge coupling;arameter influence ;continuous bridge ;eometric nonlinearity

车辆驶过桥梁时产生的一系列耦合作用，引起桥梁的振动就是车桥耦合振动。（剩余10160字）