鹅公岩轨道专用桥主桥边跨钢箱梁施工技术研究
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摘要
鹅公岩轨道专用桥为主跨600 m的双塔双索面自锚式悬索桥,为自锚式悬索桥世界之最。轨道桥在鹅公岩公路桥上游70 m,净距45 m。由于受地形、地貌、周围既有设施及交通环境影响,且钢箱梁自身节段长、重量大,边跨钢箱梁运输、架设施工难度大。经多方案比选,确定采用从主塔处向边跨顶推施工方案,文章重点阐述了边跨钢箱梁顶推施工方案研究。
Egongyan Railway Bridge is a self-anchored suspension bridge with twin tower twin rope and has a span of 600 m.It is the longest span in the world. The railway bridge located at 70 m upstream of Egongyan Highway Bridge and the net distance is 45 m. Affected by topography,the existing facilities and traffic environment,it is difficult to transport and erect the steel box girder due to its large section and heavy weight. After comparing several schemes,the construction plan about pushing the girder from the main tower to the edge was determined and discussed in this paper.
Egongyan Railway Bridge is a self-anchored suspension bridge with twin tower twin rope and has a span of 600 m.It is the longest span in the world. The railway bridge located at 70 m upstream of Egongyan Highway Bridge and the net distance is 45 m. Affected by topography,the existing facilities and traffic environment,it is difficult to transport and erect the steel box girder due to its large section and heavy weight. After comparing several schemes,the construction plan about pushing the girder from the main tower to the edge was determined and discussed in this paper.
引文
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[2]杨兴华.顶推法施工自锚式悬索桥关键技术与控制[D].沈阳:沈阳建筑大学,2015.
[3]张立青.隋明国.客运专线大跨度、大吨位钢桁梁顶推架设技术及应用[J].铁道标准设计,2010(6):48-52.
[4]杨辉.钢箱梁步履式平移顶推受力特性与施工技术[D].南昌:南昌大学,2010.
[5]李雁鸣.步履式顶推钢箱梁高位落梁技术研究[J].铁道建筑技术,2016(7):44-47.
[6]姚发海.大跨长联钢桁梁顶推关键技术[J].桥梁建设,2011(2):1-4.
[7]彭仕国.跨铁路钢箱梁顶推施工技术[J].铁道标准设计,2009(7):45-47.
[8]杨京.探讨公路桥梁钢箱梁顶推施工技术[J].商品与质量·建筑与发展,2010(6):21-22.
[9]白云.公路桥梁钢箱梁顶推施工技术[J].中国新技术新产品,2009(10):69-70.
[10]郭胜飚.公路桥梁钢箱梁顶推施工技术探讨[J].中外建筑,2008(7):202-204.
[11]涂满明,姚发海.超大跨连续钢桁梁多点顶推架设施工技术[J].交通科技,2009(1):19-21.
[12]苗兰弟,任国庆.浅谈箱梁顶推施工工艺[J].甘肃科技,2009(20):142-143.