| 预偏补偿悬臂端位移在钢桁架拱桥跨中无应力合拢施工中的应用 |
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| 引用本文： | 孙玉祥,汪存书,蔡新民.预偏补偿悬臂端位移在钢桁架拱桥跨中无应力合拢施工中的应用[J].水运工程,2010(1). |
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| 作者姓名： | 孙玉祥 汪存书 蔡新民 |
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| 作者单位： | 中交第二航务工程局有限公司第二工程有限公司,重庆,400042 |
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| 摘 要： | 重庆朝天门长江大桥是目前世界上最大跨度的拱桥,设计无应力跨径为190 m+552 m+190 m,从边支点向跨中悬臂安装.采取预偏施工技术,调整边、中支点高差及位移,补偿合拢口高差及位移,成功实现桁拱跨中无应力合拢,可供类似工程施工参考.
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| 关 键 词： | 钢桁架拱桥 预偏补偿法 无应力合拢 |
Application of pre-deviation compensation for cantilever end displacement in non-stress closure construction at mid-span steel truss arch bridge |
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| SUN Yu-xiang,WANG Cun-shu,CAI Xin-min.Application of pre-deviation compensation for cantilever end displacement in non-stress closure construction at mid-span steel truss arch bridge[J].Port & Waterway Engineering,2010(1). |
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| Authors: | SUN Yu-xiang WANG Cun-shu CAI Xin-min |
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| Institution: | SUN Yu-xiang,WANG Cun-shu,CAI Xin-min(China Communications 2nd Harbor Bureau 2nd Engineering Co.,Ltd,Chongqing 400042,China) |
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| Abstract: | Chongqing Chaotianmen Yangtze River Bridge is the largest arch bridge in span currently in the world with a design non-stress span of 190 m+552 m+190 m,installed from side bearing point to mid-span cantilever.This paper uses pre-deviation construction technique to successfully achieve non-stress closure at the mid-span by adjusting the elevation difference and displacement between side and middle bearing points to compensate the elevation difference and displacement at the closure opening,serving as a refer... |
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| Keywords: | steel truss arch bridge pre-deviation compensation method non-stress closure |
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