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钢筋水泥轨枕和合成闸瓦的广泛采用,增加了线路刚度和制动时的热负荷,明显改变了轮对的运用条件。因此,在运用中增加了有踏面缺陷车轮的数量,使动力惯性过载值显著增加,同时导致特别是货车整体辗钢轮的损坏。对因各种不同缺陷而停止运用的整体辗钢轮的分析表明,轮辐板损坏是最危险的。1971～1979年,全苏铁路运输科学研究院进行了辐板损坏车轮材质的研究。被研究的车轮在辐板产生疲劳裂纹前使用了4～12年。在事故过程中,辐板带裂纹的车轮产生脆性破坏,从属于轮辋厚度碎成3～6块(图1)。
Extensive use of reinforced concrete sleepers and synthetic brake shoes increases line stiffness and thermal load during braking, significantly changing the conditions for wheelset application. As a result, the number of wheels with tread defects is increased during use, resulting in a significant increase in dynamic inertia overloading values, as well as in particular damage to the overall steel drum of the truck. The analysis of the integral steel drum that has been discontinued for a variety of different flaws shows that it is most dangerous to damage the spoke plates. From 1971 to 1979, Quanzhou Railway Transportation Research Institute conducted a study on the material of the damaged spoke plate. The studied wheels were used for 4 to 12 years before the web developed fatigue cracks. In the course of the accident, the brittle failure of the web with cracked webs occurred and was subdivided into 3 to 6 pieces of rim thickness (Figure 1).