摘要
根据城市轨道交通轮轨相互作用特点 ,以小半径曲线为研究对象 ,建立了冲击荷载作用下轨道结构横向振动简化模型。在一系列假定的基础上 ,利用MATLAB的Simulink语言编制轮轨动力作用程序 ,通过改变钢轨扣件横向刚度 ,观察其对轮轨系统横向振动特性及钢轨磨损的影响。结果表明 :对曲线地段轨道结构横向刚度进行合理取值 ,能有效地降低轮轨相互作用以及延缓钢轨磨损。
According to the characteristic of wheel/rail interaction in urban rail transit, this paper takes the curved tracks with small radius as an object, and establishes a simple lateral track model under lateral shock force. Following a series of hypothesis, the program of wheel/rail dynamic interaction has been worked out depending on MATLAB Simulink. The dynamic effect of the rail fastener on wheel/rail system transverse vibration characteristics and rail wears in curved track is investigated when the lateral stiffness has been changed. The result indicates that the wheel/rail interaction shall be improved and rail wears be alleviated by selecting rational parameter of curved track.
出处
《城市轨道交通研究》
2002年第3期44-48,共5页
Urban Mass Transit
