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为了更准确地分析钢轨应力和列车荷载作用下的受力特性,该文将钢轨看作三维实体,并考虑扣件支承面积的影响,将其视为均布弹簧,建立了更接近实际的力学模型,分析了钢轨在竖向力作用下的应力和位移,并对枕上应力进行了求解,将结果与传统的点支承梁简化模型进行比较,指出了两者之间的相似之处和差异性;同时指出,三维实体方式建模更有利于指导钢轨和轨枕的细部设计。
In order to analyze the stress characteristics under rail stress and train load more accurately, this paper regards the rail as a three-dimensional entity and considers the influence of fastener support area as a uniform spring, establishing a mechanics closer to reality Model, the stress and displacement of rail under vertical force are analyzed, and the stress on the pillow is solved. The result is compared with the traditional simplified model of point support beam, and the similarities and differences between the two are pointed out At the same time, it is pointed out that the modeling of three-dimensional solid mode is more conducive to the detailed design of rail and sleeper.