| 大跨度钢管混凝土拱桥拱肋混凝土灌注顺序优化 |
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| 引用本文： | 杨小森,闫维明,陈少峰,孙航.大跨度钢管混凝土拱桥拱肋混凝土灌注顺序优化[J].公路交通科技,2010,27(1). |
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| 作者姓名： | 杨小森 闫维明 陈少峰 孙航 |
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| 作者单位： | 1. 北京工业大学,北京,100124
2. 哈尔滨工业大学,黑龙江,哈尔滨,150090 |
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| 基金项目： | 北京市教委科技与研究生教育建设项目(4700001401509) |
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| 摘 要： | 钢管混凝土拱桥拱肋混凝土灌注是施工中的控制性工序,为保证灌注过程的安全,在分析、比较弹性稳定计算方法和弹塑性稳定计算方法的特点和差别的基础上,提出了以施工过程中的弹性稳定安全系数为评价标准和用弹塑性稳定分析方法进行校核验算的拱肋混凝土灌注顺序优化方法,并以千岛湖1号特大桥为例进行了分析计算,同时还讨论了钢管拱肋合龙时初始应力对灌注顺序优化结果的影响。分析结果表明,最优的灌注顺序和拱肋合龙时的初应力关系密切,不同的拱肋架设方法将导致最优的灌注顺序发生变化。因此进行拱肋混凝土灌注顺序设计时,应该按照实际拱肋拼装过程考虑钢管拱肋的初应力。
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| 关 键 词： | 桥梁工程 拱肋混凝土灌注顺序 稳定分析 初始应力 |
Sequence Optimization of Concrete Casting in Steel Tubular Ribs for Long-span CFST Arch Bridge |
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| YANG Xiaosen,YAN Weiming,CHEN Shaofeng,SUN Hang.Sequence Optimization of Concrete Casting in Steel Tubular Ribs for Long-span CFST Arch Bridge[J].Journal of Highway and Transportation Research and Development,2010,27(1). |
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| Authors: | YANG Xiaosen YAN Weiming CHEN Shaofeng SUN Hang |
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| Institution: | 1.Beijing University of Technology;Beijing 100124;China;2.Harbin Institute of Technology;Harbin Heilongjiang 150090;China |
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| Abstract: | Concrete casting in steel tubular ribs is the key step during the construction of CFST arch bridge with long-span.In order to ensure the construction safety,the difference between the elastic stability analysis and elastoplastic stability analysis methods and their characteristics were discussed separately. Then the optimization method of the sequence design of concrete casting in steel tubular ribs was given which taking the elastic stability factor as the criterion and checking by the elastoplastic stabil... |
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| Keywords: | bridge engineering sequence of concrete casting in steel tubular ribs stability analysis initial stress |
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