摘要
A space coupling vibration model of the system of wheel and lead curve rails of turnouts is presented, in which the vibration of the straight and curved rails are taken into account and the variations of the elasticity of roadbed with the length of switch ties are considered. It is used to investigate the dynamic characteristics of different configuration of lead curve, such as circular curve, cubic spiral and high order transition curves. Based on the numerical analysis, some advantageous configurations of lead curve are suggested.
A space coupling vibration model of the system of wheel and lead curve rails of turnouts is presented, in which the vibration of the straight and curved rails are taken into account and the variations of the elasticity of roadbed with the length of switch ties are considered. It is used to investigate the dynamic characteristics of different configuration of lead curve, such as circular curve, cubic spiral and high order transition curves. Based on the numerical analysis, some advantageous configurations of lead curve are suggested.
