| 斜拉桥钢桥塔极限承载力分析 |
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| 引用本文： | 吴斌暄,肖汝诚,魏乐永.斜拉桥钢桥塔极限承载力分析[J].石家庄铁道学院学报,2009,22(2). |
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| 作者姓名： | 吴斌暄 肖汝诚 魏乐永 |
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| 作者单位： | 吴斌暄,肖汝诚(同济大学,桥梁工程系,上海,200092);魏乐永(中交公路规划设计院,北京,100010)
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| 基金项目： | 高等学校博士学科点专项科研基金项目 |
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| 摘 要： | 斜拉桥钢桥塔相对于混凝土桥塔而言一个值得注意的问题是,钢桥塔还关注局部稳定对结构整体稳定性的影响.当无法了解结构在复杂的初始缺陷、温度荷载等非线性因素作用和整体-局部相关稳定作用下的临界荷载时,只能靠放大安全系数来保证结构的安全,这样进行钢桥塔的设计以及建造,存在较大的盲目性,势必造成大量的隐患和浪费.以某斜拉桥为例,通过空间杆系模型和板壳元模型的对比分析,考虑不同的失稳判定准则和整体、局部缺陷及非线性温度影响,对钢桥塔的极限承载力进行研究,为大跨度斜拉桥钢桥塔的极限承载力分析及设计提供一定的理论依据.
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| 关 键 词： | 钢桥塔 整体-局部相关稳定作用 极限承载力 |
Study on Ultimate Load Capacity of Steel Pylon of Cable Stayed Bridge |
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| Wu Binxuan,Xiao Rucheng,Wei Leyong Consultants,Inc.,Beijing ,China.Study on Ultimate Load Capacity of Steel Pylon of Cable Stayed Bridge[J].Journal of Shijiazhuang Railway Institute,2009,22(2). |
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| Authors: | Wu Binxuan Xiao Rucheng Wei Leyong Consultants Inc Beijing China |
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| Institution: | Wu Binxuan1,Xiao Rucheng1,Wei Leyong2(1.Department of Bridge Engineering,Tongji University,Shanghai 200092,China,2.China Highway Planning and Design Institute(HPDI) Consultants,Inc.,Beijing 100010,China) |
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| Abstract: | Compared with cable stayed bridge's concrete pylon,an important problem of steel pylon is the interaction between global and local buckling.For structures with many nonlinear factors such as complex initial defects and nonlinear temperature and interaction between local and global buckling while the critical load is unknown,the safety of the structures just depends on magnifying the safety factor.It is unreliable to design and construct the steel pylon in this way mentioned above.As a case study,a detail co... |
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| Keywords: | steel pylon interaction between global and local buckling ultimate load capacity |
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