| 虎门二桥坭洲水道桥近塔区无吊索钢箱梁临时支承体系设计 |
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| 引用本文： | 谭立心,李传习.虎门二桥坭洲水道桥近塔区无吊索钢箱梁临时支承体系设计[J].世界桥梁,2019,47(4):6-11. |
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| 作者姓名： | 谭立心 李传习 |
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| 作者单位： | 长沙理工大学土木与建筑学院,湖南长沙410004;广东省长大公路工程有限公司,广东广州511430;长沙理工大学土木与建筑学院,湖南长沙,410004 |
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| 摘 要： | 虎门二桥坭洲水道桥为主跨1688m的不对称双塔双跨钢箱梁悬索桥。针对近塔区无吊索钢箱梁段的临时支承及线形调节需要,设计了“挑梁支架+临时吊索”的临时支承体系。挑梁支架布置于桥塔下横梁顶部,单幅主梁由2根12m长的3HM588型钢组成,主梁上布置分配梁和轨道梁。挑梁支架临时支承钢箱梁段,并可通过钢滑靴的高度和坡度以及三向千斤顶调整梁段线形。临时吊索由临时索夹、骑跨钢丝绳、螺杆扁担梁、可调节螺杆、连接件组成,既可悬吊支承钢箱梁,又可调节钢箱梁前端标高。全桥钢箱梁段吊装完成后、梁段间环焊施工前,采用临时吊索和布置于挑梁支架上的三向千斤顶调整无吊索梁段的线形及平面位置,环焊使其连接成为整体,再对已成整体的无吊索梁段精调后与合龙段进行环焊施工。
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| 关 键 词： | 悬索桥 钢箱梁段 临时支承体系 挑梁支架 临时吊索 刚柔结合支承 桥梁施工 |
Design of Temporary Supporting System for Hangers-Free Steel Box Girders near Towers of Nizhou Waterway Bridge of Second Humen Bridge |
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| TAN Li-xin,LI Chuan-xi.Design of Temporary Supporting System for Hangers-Free Steel Box Girders near Towers of Nizhou Waterway Bridge of Second Humen Bridge[J].World Bridges,2019,47(4):6-11. |
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| Authors: | TAN Li-xin LI Chuan-xi |
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| Institution: | (School of Civil Engineering, Changsha University of Science and Technology, Changsha 410004, China;Guangdong Provincial Changda Highway Engineering Co. , Ltd. , Guangzhou 511430, China) |
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| Abstract: | TAN Li-xin;LI Chuan-xi(School of Civil Engineering, Changsha University of Science and Technology, Changsha 410004, China;Guangdong Provincial Changda Highway Engineering Co. , Ltd. , Guangzhou 511430, China) |
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| Keywords: | suspension bridge steel box girder section temporary supporting system cantilever supporting frame temporary hanger supporting provided by both rigid and flexible systems bridge construction |
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