| 预偏补偿悬臂端位移在钢桁架拱桥跨中无应力合龙施工中的应用 |
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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龙施工中的应用[J]. 中国港湾建设, 2009, 0(5): 38-41 |
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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： | 中交二航局第二工程有限公司,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190m＋552m＋190m。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，补偿合龙口高差及位移，成功实现了桁拱跨中无应力合龙。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 无应力合龙 |
Application for Pre-deviation Compensation for Cantilever End Displacement of Steel Truss Arch Bridge in Non-stress Closure Construction |
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| SUN Yu-xiang,WANG Cun-shu,CAI Xin-min. Application for Pre-deviation Compensation for Cantilever End Displacement of Steel Truss Arch Bridge in Non-stress Closure Construction[J]. China Harbour Engineering, 2009, 0(5): 38-41 |
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| Authors: | SUN Yu-xiang WANG Cun-shu CAI Xin-min |
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| Affiliation: | (China Communications 2nd Navigational Bureau 2nd Engineering Co., Ltd., Chongqing 400042, China ) |
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| Abstract: | Chongqing Chaotianmen Yangtze River Bridge is the largest-span steel truss arch bridge in the world, the designed non-stress spans be 190 m ＋ 552 m ＋ 190 m, cantilever installation carried out from side bearing point to mid-span, using pre-deviation construction technique to adjusting level difference and displacement between the side and middle bearing points to compensate the level difference and displacement at the closure mouth for the final successful non-stress closure at mid-span, this method can be reference for similar works construction. |
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| Keywords: | steel truss arch bridge pre-deviation compensation method non-stress closure |
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