柔性铺装防护体系在铁路钢桥有砟轨道桥面中的适用性
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摘要
以冷拌树脂沥青混凝土铺装层为研究对象,通过试验研究其在铁路钢桥有砟轨道桥面中的适用性。研究内容包括铺装层耐道砟竖向刺穿疲劳性能和铺装层耐道砟水平向磨耗性能2方面。通过耐道砟竖向刺穿疲劳试验发现,以1. 5倍高速铁路列车轴重循环加载500万次,铺装层未出现明显的局部凸起、磨损、刺穿或破碎现象,状态良好;通过耐道砟水平向磨耗试验发现,在道砟往复摩擦作用下,铺装层与道砟之间的摩擦因数约为1. 06,冷拌树脂沥青混凝土铺装层具有较好的耐道砟水平向磨耗性能。冷拌树脂沥青混凝土铺装层对铁路钢桥有砟轨道桥面具有良好的适用性。
Taking the cold mix resin asphalt concrete pavement as a research object,the adaptability of pavement to railway ballast track steel bridge deck was studied by experiment in this paper. The research contents include the vertical puncture fatigue performance and the horizontal wear performance of ballast resistance on pavement.Through the vertical puncture fatigue test of ballast resistance,it is found that the pavement is in good condition without obvious local protrusion,wear,puncture or breakage when the axle load of 1. 5 times high speed railway train is cyclically loaded for 5 million times.Through the horizontal wear test of ballast resistance,it is found that the friction coeff icient between the pavement and ballast is about 1. 06 under the reciprocating friction of ballast. The cold mix resin asphalt concrete pavement has better horizontal wear performance of ballast resistance,and it has good adaptability to railway ballast track steel bridge deck.
Taking the cold mix resin asphalt concrete pavement as a research object,the adaptability of pavement to railway ballast track steel bridge deck was studied by experiment in this paper. The research contents include the vertical puncture fatigue performance and the horizontal wear performance of ballast resistance on pavement.Through the vertical puncture fatigue test of ballast resistance,it is found that the pavement is in good condition without obvious local protrusion,wear,puncture or breakage when the axle load of 1. 5 times high speed railway train is cyclically loaded for 5 million times.Through the horizontal wear test of ballast resistance,it is found that the friction coeff icient between the pavement and ballast is about 1. 06 under the reciprocating friction of ballast. The cold mix resin asphalt concrete pavement has better horizontal wear performance of ballast resistance,and it has good adaptability to railway ballast track steel bridge deck.
引文
[1]刘巍.黄大线黄河特大桥钢桁梁明桥面轨道结构方案研究[J].铁道建筑,2013,53(6):139-141.
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[6]艾宗良,马庭林,袁明,等.环氧沥青混凝土柔性防水保护层在铁路钢桥上的应用[J].钢结构,2013,28(4):41-45.
[7]鞠晓臣,刘晓光,赵欣欣,等.铁路钢桥桥面铺装结构力学分析[J].铁道建筑,2017,57(9):13-16.
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[9]ONISCHENKO A,AKSENOV S,NEVYNHLOVSKYY V.Numerical Simulation of Stress-strain State of Asphalt Concrete Pavement on the Carriageway of the South Bridge in Kiev[J].Procedia Engineering,2016,134:322-329.
[10]陈志超.水泥混凝土桥面铺装防水性能研究[D].西安:长安大学,2011.
[11]张占军.水泥混凝土桥面沥青混凝土铺装结构研究[D].西安:长安大学,2000.
[2]陶晓燕.钢梁桥面与无砟轨道连接构造疲劳试验研究[J].钢结构,2013,28(6):14-17.
[3]CHEN L L,QIAN Z D,HU H Z.Epoxy Asphalt Concrete Protective Course Used on Steel Railway Bridge[J].Construction and Building Materials,2013,41:125-130.
[4]刘桂红.南京大胜关长江大桥正交异性钢桥面设计[J].铁道建筑技术,2010(增2):44-46.
[5]陈磊磊,钱振东,王建伟,等.武汉天兴洲公铁两用长江大桥钢桥面环氧沥青混凝土铺装设计与施工[J].桥梁建设,2011,41(1):79-82.
[6]艾宗良,马庭林,袁明,等.环氧沥青混凝土柔性防水保护层在铁路钢桥上的应用[J].钢结构,2013,28(4):41-45.
[7]鞠晓臣,刘晓光,赵欣欣,等.铁路钢桥桥面铺装结构力学分析[J].铁道建筑,2017,57(9):13-16.
[8]高博,王俏,王民,等.国内外典型桥面铺装组合结构性能研究[J].公路交通技术,2011(2):43-47.
[9]ONISCHENKO A,AKSENOV S,NEVYNHLOVSKYY V.Numerical Simulation of Stress-strain State of Asphalt Concrete Pavement on the Carriageway of the South Bridge in Kiev[J].Procedia Engineering,2016,134:322-329.
[10]陈志超.水泥混凝土桥面铺装防水性能研究[D].西安:长安大学,2011.
[11]张占军.水泥混凝土桥面沥青混凝土铺装结构研究[D].西安:长安大学,2000.