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针对道岔已有线型建立了车辆——道岔耦合动力学仿真模型,分析各种道岔侧线线型的动力学特性,提出适合大号码道岔的合理线型设置方案。结果表明:侧向通过速度为80 km/h道岔采用切线+圆曲线线型在结构受力、运行舒适性等方面比采用单圆曲线线型具有优越性;侧向通过速度为160 km/h道岔,采用缓圆缓线型比圆缓线型更能降低列车通过转辙器和辙叉区域的动力响应,对于缓圆缓线型,先加大起始缓和曲线半径的方法比加大中间圆曲线半径更有效。
For the existing turnout, a vehicle - turnout coupling dynamic simulation model was established, the dynamic characteristics of each turnout linetype were analyzed, and a reasonable linetype configuration scheme was proposed for large turnout. The results show that the lateral passing speed of 80 km / h is better than that of single circular curve in the aspects of mechanical strength and operational comfort. The lateral passing speed is 160 km / h Turnout, the use of slow and slow round than the slow round line model can reduce the train through the switch and the frog region dynamic response, for the slow round mode, first increase the radius of the initial relaxation curve than the middle of the increase Circular curve radius more effective.