铁道标准设计

2015, v.59;No.647(11) 10-14

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重载道岔轨底坡设置研究
Research on Rail Cant of Heavy Load Turnout

何雪峰;高亮;许有全;辛涛;
HE Xue-feng;GAO Liang;XU You-quan;XIN Tao;China Railway Engineering Consulting Group Co.,Ltd.;Beijing Jiaotong University;

摘要(Abstract):

轨底坡作为道岔的主要参数,直接影响钢轨使用寿命,结合30 t轴重重载道岔研究需要,对轨底坡进行系统研究。针对重载线路道岔鱼鳞纹、掉块、肥边等病害,运用车辆轨道耦合动力学理论,对25 t轴重货车通过不同轨底坡道岔时的动力响应进行分析。结果表明:轨底坡增加,横向轮轨力、接触应力和安全指标,导曲线上股钢轨磨耗功都有不同程度的降低,长期观测结果显示,采用1∶20轨道坡的试验道岔,导曲线钢轨光带居中,未见伤损。
Rail cant affects rail life directly as an important design parameter of turnout and rail cant is studied systematically to meet research need of heavy turnout of 30 t axle load. Dynamic responses of 25 t axle load freight car passing turnouts with different rail cants are analyzed with vehicle-track coupling dynamics theory in perspective of fine corner crack,fall-block,fat edge and other defects. The research results show that lateral wheel-rail force,contact stress,safety indicators and wear power for outside guiding curve rail decrease with the increase of rail cant. The long-term observation indicates that the test turnout with 1∶ 20 rail cant has its light band in the middle of upper surface of the guiding curve rail without damage.

关键词(KeyWords): 重载铁路;30 t轴重;重载道岔;轨底坡
Heavy haul railway;30 t axle load;Heavy haul turnout;Rail cant

Abstract:

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基金项目(Foundation): 中国铁路总公司科技研究资助项目(2011G028-A)

作者(Author): 何雪峰;高亮;许有全;辛涛;
HE Xue-feng;GAO Liang;XU You-quan;XIN Tao;China Railway Engineering Consulting Group Co.,Ltd.;Beijing Jiaotong University;

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DOI: 10.13238/j.issn.1004-2954.2015.11.003

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