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以双层弹簧阻尼支承Timoshenko梁作为钢轨的力学模型,在列车荷载作用下钢轨动力响应解的基础上,采用二系质量模型,计算了不同轨下基础参数时的轮轨作用力时程曲线和频谱曲线,分析了轨下基础参数对轮轨作用力的影响。
The double-layer spring damped Timoshenko beam is taken as the mechanical model of the rail. Based on the dynamic response of the rail under the train load, the second-line mass model is used to calculate the time-history curve of the wheel- Spectrum curve, the influence of the basic parameters on the wheel-rail force is analyzed.