| 27t轴重条件下轨道结构劣化规律和适应性分析 |
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| 引用本文： | 潘振,马战国,郄录朝,张欢,尤瑞林,李闯.27t轴重条件下轨道结构劣化规律和适应性分析[J].铁道建筑,2020(1):89-94. |
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| 作者姓名： | 潘振 马战国 郄录朝 张欢 尤瑞林 李闯 |
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| 作者单位： | 中国铁道科学研究院集团有限公司铁道建筑研究所;中国铁道科学研究院集团有限公司金属及化学研究所 |
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| 基金项目： | 中国铁路总公司科技研究开发计划（P2018X011） |
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| 摘 要： | 针对既有轨道结构在27 t轴重条件下的劣化问题,在北同蒲(大同—蒲州)线、大秦(大同—秦皇岛)线选择有代表性区段建立跟踪观测试验段,在试验段内铺设了强化型扣件进行长期跟踪观测,并结合仿真计算和现场测试,研究27 t轴重条件下轨道结构的劣化规律和适应性。研究结果表明:目前使用的U78CrV在线热处理钢轨、Ⅲ型混凝土轨枕及配套的弹条Ⅱ型扣件、道床基本适应27 t轴重车辆运营需求,但建议小半径曲线区段更换为加强型扣件或Ⅳ型混凝土轨枕,以提高线路稳定性和承载能力。
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| 关 键 词： | 重载铁路 轨道结构 27 t轴重 现场测试 劣化规律 适应性 |
Analysis of Deterioration Law and Adaptability of Track Structure Under 27t Axle Load |
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| PAN Zhen,MA Zhanguo,QIE Luchao,ZHANG Huan,YOU Ruilin,LI Chuang.Analysis of Deterioration Law and Adaptability of Track Structure Under 27t Axle Load[J].Railway Engineering,2020(1):89-94. |
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| Authors: | PAN Zhen MA Zhanguo QIE Luchao ZHANG Huan YOU Ruilin LI Chuang |
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| Institution: | (Railway Engineering Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Metals&Chemistry Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China) |
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| Abstract: | Aiming at the deterioration problem law of the existing track structure under 27 t axle load,representative sections of North Datong-Puzhou railway and Datong-Qinhuangdao railway were selected and reinforced fasteners were laid in the sections for long-term testing and observation.Meanwhile,combined with the simulation calculation and field test,the deterioration law and the adaptability of the track structure under 27 t axle load were analyzed.The results show that the present U78CrV heated rail,concrete tie of typeⅢ,fastener of typeⅡand ballast are adapt to the 27 t axle load train running,but at sharp curve,the reinforced fastener or concrete tie of typeⅣare advised to install to improve the track stability and strength. |
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| Keywords: | heavy haul railway track structure 27 t axle load field test deterioration law adaptability |
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