汉阳河特大桥主桥快速施工技术
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摘要
为了提高汉阳河特大桥主桥施工效率,采用大节段吊装+少扣索扣锚体系的施工方法进行主拱圈施工,扣塔设计时通过在交界墩顶部直接布置部分扣锚梁来减少扣塔工程量,拱上立柱及盖梁利用一次性起吊技术进行安装。由此简化了施工工序,降低了施工难度,使主桥比既定工期提前完成施工。
In order to improve the efficiency of construction for the main bridge of Hanyang River Bridge,the construction method of large section hoisting and less cable fastening-anchoring cable system was used to construct the main arch;arrangement of partial fastening-anchoring beams on the top of the juncture pier is adopted to reduce the quantities of fastening towel design;and the one-time hoisting technology is used to install the arch column and bent cap.Thus the construction process is simplified and the difficulty of the construction is reduced,and the main bridge construction is completed ahead of established schedule.
In order to improve the efficiency of construction for the main bridge of Hanyang River Bridge,the construction method of large section hoisting and less cable fastening-anchoring cable system was used to construct the main arch;arrangement of partial fastening-anchoring beams on the top of the juncture pier is adopted to reduce the quantities of fastening towel design;and the one-time hoisting technology is used to install the arch column and bent cap.Thus the construction process is simplified and the difficulty of the construction is reduced,and the main bridge construction is completed ahead of established schedule.
引文
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[2]牟宏杰.特大桥上承式钢筋混凝土拱桥拱圈施工扣锚索系统施工设计[J].公路交通科技(应用技术版),2013(11):366-370.
[3]田继开.巫山大宁河特大桥拱肋斜拉扣挂法施工设计[J].交通科技,2013(1):46-48.
[4]刘爱家.缆索吊装扣锚系统设计与“一次张拉扣索法”施工控制技术[J].科技创新导报,2009(7):67-69.
[5]吴飞志.钢管混凝土拱桥拱肋吊装时扣索索力分析计算[J].交通科技,2010(4):33-35.
[6]孔繁龙.基于插值迭代法的特大跨径拱桥扣索索力计算[J].华东公路,2012(6):89-91.
[7]左雁.上承式钢管混凝土拱桥低扣塔架设的合理施工顺序与控制方法[D].长沙:长沙理工大学,2013.