| 南盘江特大桥钢管混凝土真空一次压注技术 |
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| 引用本文： | 贺常松.南盘江特大桥钢管混凝土真空一次压注技术[J].铁道建筑技术,2014(5):7-9. |
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| 作者姓名： | 贺常松 |
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| 作者单位： | 中铁十八局集团第二工程有限公司,河北唐山063000 |
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| 摘 要： | 根据云桂南盘江特大桥主桥上承式钢管混凝土拱桥的结构形式,钢管拱管内混凝土采用真空辅助一次压注顶升进行施工。介绍了管内混凝土采用真空辅助一次压注顶升的主要施工工艺和控制要点,为今后国内类似的大跨度钢管拱真空辅助一次压注施工积累了经验。
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| 关 键 词： | 特大桥 钢管拱 真空辅助 一次压注 C80微膨胀混凝土 |
One-time Pressure Injection Technology in Vacuum Condition of Steel Pipe Concrete for the Nanpanjiang Super River Bridge |
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| He Changsong.One-time Pressure Injection Technology in Vacuum Condition of Steel Pipe Concrete for the Nanpanjiang Super River Bridge[J].Railway Construction Technology,2014(5):7-9. |
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| Authors: | He Changsong |
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| Institution: | He Changsong (China Railway 18th Bureau Group Co. Ltd. , Tangshan 063000, China) |
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| Abstract: | According to the structural form of the main bridge of concrete filled deck steel pipe arch bridge of Nanpanjiang River Bridge, the concrete-filled steel pipe adopts vacuum assisted one-time pressure jacking construction. The paper introduces the concrete in the pipe with vacuum assisted one-time grouting construction technology and control points of lifting to provide experiences for similar domestic vacuum assisted one-time pressure injection large-span steel pipe arch construction in the future. |
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| Keywords: | extra large bridge steel pipe arch vacuum assisted one-time pressure injection C80 micro expansion concrete |
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