| 东新赣江特大桥钢桁梁架设施工技术 |
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| 引用本文： | 李华军,田大千.东新赣江特大桥钢桁梁架设施工技术[J].桥梁建设,2011(2). |
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| 作者姓名： | 李华军 田大千 |
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| 作者单位： | 中铁大桥局集团第五工程有限公司,江西九江,332001 |
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| 摘 要： | 东新赣江特大桥主桥为变截面双主桁连续钢桁梁桥,跨径布置为(126+196+126)m,主桁采用N形上弦变高桁式。为确保主桥钢桁梁准确定位,针对钢桁梁结构特点,在陆地上设置钢梁预拼场组拼杆件,在水上采用浮吊架设,采取膺架与悬臂法拼装相结合的方案,由两端边跨向主跨拼装,采用边墩顶落梁,并结合顶拉钢桁梁纵移的方法进行合龙。通过调整上下弦横向偏移、高差、纵向偏移等技术使钢桁梁中线偏位、主桁高差、钢梁竖向线形等均得到较好控制,实现钢桁梁高精度合龙。
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| 关 键 词： | 钢桁梁 架设 合龙 桥梁施工 |
Construction Techniques for Erection of Steel Truss Girder of Dongxin Ganjiang River Bridge |
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| LI Hua-jun,TIAN Da-qian.Construction Techniques for Erection of Steel Truss Girder of Dongxin Ganjiang River Bridge[J].Bridge Construction,2011(2). |
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| Authors: | LI Hua-jun TIAN Da-qian |
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| Institution: | LI Hua-jun,TIAN Da-qian(The 5th Engineering Co.,Ltd.,China Railway Major Bridge Engineering Group,Jiujiang 332001,China) |
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| Abstract: | The main bridge of Dongxin Ganjiang River Bridge is a two-main-truss continuous steel truss girder bridge with variable cross section with span arrangement(126+196+126) m.The main trusses of the bridge are designed as the N-shaped trusses,of which the upper chords are the ones of variable depth.To ensure that the steel truss girder could be accurately positioned and in consideration of the structural features of the girder,an assembling yard was arranged on land where the members of the steel truss girder w... |
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| Keywords: | steel truss girder erection closure bridge construction |
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