| 水中裸露基岩中大直径双壁钢围堰施工技术 |
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| 引用本文： | 魏贤华.水中裸露基岩中大直径双壁钢围堰施工技术[J].铁道建筑技术,2009(3). |
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| 作者姓名： | 魏贤华 |
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| 作者单位： | 中铁十四局集团有限公司,济南,250014 |
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| 摘 要： | 广深港铁路客运专线沙湾水道特大桥14号主墩承台全部埋于沙湾水道水中裸露基岩中,双壁钢围堰须嵌入基岩8m。结合沙湾水道特大桥14号墩双壁钢围堰施工,介绍32.6m大直径双壁钢围堰变截面设计、制作、下水、浮运、定位、下沉、封底、拆除和水下爆破等关键施工技术。
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| 关 键 词： | 裸露基岩 水下爆破 大直径 双壁钢围堰 施工技术 |
Construction Technique for Long-diameter Double-wall Steel Cofferdam in Underwater Exposed Bedrock |
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| WEI Xianhua.Construction Technique for Long-diameter Double-wall Steel Cofferdam in Underwater Exposed Bedrock[J].Railway Construction Technology,2009(3). |
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| Authors: | WEI Xianhua |
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| Institution: | Wei Xianhua(China Railway 14th Bureau Group Co.Ltd.; Ji nan 250014; China); |
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| Abstract: | In Guang-Shen-Gang Railway PDL s Shawan River extra-large bridge,the bearing platform of 14# main pier is deeply buried in Shawan River s underwater exposed bedrock,with the double wall steel cofferdam inserting the bedrock 8 m.In light of the double wall steel cofferdam construction in Shawan River extra-large bridge 14# pier,key construction techniques in 32.6 m large-diameter double wall steel cofferdam are introduced,including the variable cross section design,fabrication,launching,floating,settlement,... |
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| Keywords: | exposed bedrock underwater blast large diameter double wall steel cofferdam construction technique |
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