摘要
基于轮轨接触理论,考虑固定辙叉复杂的轨头廓形变化及轨距线不连续,提出能够准确计算固定辙叉轮轨接触参数的算法并编制相应计算软件。通过现场试验,对LM型踏面通过60 kg/m钢轨12号合金钢组合辙叉时的轮轨接触点位置(包括沿辙叉纵向和各关键断面)进行测量,并与软件计算结果对比分析;采用该算法分析60 kg/m钢轨12号提速道岔整铸辙叉翼轨加高这一优化设计对轮轨接触参数的影响。结果表明,沿辙叉走行方向和辙叉各关键断面,实测值与软件计算的轮轨接触点变化规律基本一致;对翼轨适当加高可以优化轮轨接触关系,降低辙叉竖向不平顺,验证了该算法的正确性和软件的可行性,便于准确、高效地对固定辙叉区轮轨关系进行优化设计。
Based on wheel / rail contact theory,an algorithm is proposed to obtain accurate wheel / rail contact parameters of rigid frogs and the corresponding software is developed in consideration of the change of complex railhead profiles and the discontinuity of gauge lines in rigid frogs. The LM wheel tread passing over No. 12 alloy steel combination frog is simulated by field test,and wheel / rail contact points along the longitudinal direction and key cross sections of frogs are measured and compared with those calculated by software. This software is used to analyze the influences on wheel / rail contactparameters when wing rails of cast manganese steel frog are heightened. The results show the variation regularities of wheel / rail contact points measured by field test agree with those of pointscalculated by software; the reasonable heightening of the wing rail can optimize the wheel / rail contact relationship and reduce vertical irregularities in rigid frogs, which validates the correctness of the algorithm and the feasibility of the software; the software is an accurate and efficient tool to optimize the design of wheel / rail contact relationship in the rigid frog zone.
出处
《铁道标准设计》
北大核心
2016年第5期15-19,24,共6页
Railway Standard Design
基金
国家自然科学基金资助项目(51508098
51308081)
福建省教育厅资助项目(JA15327)
关键词
铁路道岔
固定辙叉
轮轨接触关系
软件开发
不平顺
优化设计
Turnout
Rigid frog
Wheel / rail contact geometry
Software development
Irregularity
Optimization design
作者简介
赵卫华（1984-），女，讲师，博士，E-mail：whzhao．good@163．com。
