论文部分内容阅读
利用模态分析法,建立了车辆-轨道垂向耦合动力计算模型。在模型中,车辆为附有二系弹簧的整车模型,钢轨被离散为双层弹性基础上的欧拉梁。采用Wilson-θ数值积分方法,得到了钢轨在列车荷载作用下的随机振动响应。基于结构动力可靠度理论的拟静力分析方法,得到了列车荷载作用下武汉轻轨系统轨道结构的可靠指标。根据计算结果,建议我国既有无缝线路轨道交通的可靠指标为3.70。
Using modal analysis method, a vehicle - track vertical coupled dynamic calculation model is established. In the model, the vehicle is a complete vehicle model with a secondary spring, and the rails are separated into Euler beams based on a double-layer elasticity. Using the Wilson-θ numerical integration method, the random vibration response of the rail under the train load is obtained. Based on the pseudo-static analysis method of structural dynamic reliability theory, the reliable index of orbit structure of Wuhan light rail system under train load is obtained. According to the calculation result, it is suggested that the reliable index of the rail transit of the existing seamless railway in our country is 3.70.