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针对地铁减振扣件(GJ-III,DTVI2)在实际使用中对于轨道道床振动的减振效果,利用车辆-轨道耦合动力学模型,采用等效集总质量法,将连续轨道简化为具有有限自由度的弹簧-质量系统,避免了四阶不连续偏微分方程的求解。利用多体动力学软件simpack进行计算,并与在线测试的数据进行对比,计算出GJ-III扣件相对于DTVI2扣件,道床减振量的数值模拟值Z振级在垂向为8.5 d B,横向为7.4 d B,计算结果与实测数据基本一致。
Aiming at the vibration reduction effect of railroad bed vibration damping for subway vibration reduction fastener (GJ-III, DTVI2), the equivalent orbital mass method is used to reduce the continuous orbit to finite The spring-mass system of degrees of freedom avoids the solution of fourth-order discontinuous partial differential equations. The multi-body dynamics software simpack was used to calculate and compare with the online test data to calculate the GZ-III fastener relative to the DTVI2 fastener. , Horizontal 7.4 d B, the calculated results are basically consistent with the measured data.