| 290m空腹式刚构桥三角区施工技术 |
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| 引用本文： | 韩洪举,黄坤全.290m空腹式刚构桥三角区施工技术[J].桥梁建设,2011(3). |
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| 作者姓名： | 韩洪举 黄坤全 |
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| 作者单位： | 1. 贵州路桥集团有限公司,贵州贵阳,550001
2. 贵州高速公路开发总公司,贵州贵阳,550004 |
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| 摘 要： | 北盘江特大桥主桥为(82.5+220+290+220+82.5)m预应力混凝土空腹式连续刚构。为解决三角区上、下弦施工相互干扰,无法同步进行的问题,对该部位施工技术进行研究。采用上弦滞后于下弦2个梁段(先施工下弦、后施工上弦)的总体施工方案,并合理设计挂篮及支架系统。下弦采用挂篮并辅以扣索张拉施工,上弦采用支撑于下弦顶面的支架分段现浇施工,待上、下弦箱梁施工至11号节段后,利用上弦处挂篮浇筑三角区汇合段混凝土。
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| 关 键 词： | 北盘江特大桥 刚构桥 空腹式 挂篮 支架 悬臂拼装架桥 桥梁施工 |
Construction Techniques for Triangle Area of a 290-m Span Open-Web Continuous Rigid-Frame Bridge |
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| HAN Hong-ju,HUANG Kun-quan.Construction Techniques for Triangle Area of a 290-m Span Open-Web Continuous Rigid-Frame Bridge[J].Bridge Construction,2011(3). |
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| Authors: | HAN Hong-ju HUANG Kun-quan |
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| Institution: | HAN Hong-ju1,HUANG Kun-quan2(1.Guizhou Road and Bridge Group Co.,Ltd.,Guiyang 550001,China,2.GuizhouExpressway Development Corporation,Guiyang 550004,China) |
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| Abstract: | The main bridge of Beipan River Bridge is a prestressed concrete open-web continuous rigid-frame bridge with span arrangement(82.5+220+290+220+82.5) m.To tackle the problem that the construction of the upper and lower chords in the triangle area of the bridge would interfere with each other and the construction of the upper and lower chords could not be carried out in the same step,the construction techniques for the area were studied.It was determined through the study that the overall construction scheme ... |
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| Keywords: | Beipan River Bridge rigid-frame bridge open-web form traveler scaffolding cantilever assembling and erection of bridge bridge construction |
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