| 公轨双层大跨径钢桁架桥节点试验研究 |
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| 引用本文： | 闫兴非,邓玮琳,彭俊,周良.公轨双层大跨径钢桁架桥节点试验研究[J].中国市政工程,2011(5):68-72. |
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| 作者姓名： | 闫兴非 邓玮琳 彭俊 周良 |
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| 作者单位： | 上海市城市建设设计研究总院,上海,200125 |
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| 基金项目： | 上海市科技人才计划项目 |
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| 摘 要： | 以上海闵浦二桥中的典型整体焊接节点为背景,采用节点模型进行了不同荷载工况下钢桁梁整体焊接节点受力全过程试验研究。研究显示:在设计荷载工况及超载工况下,节点安全可靠,满足规范要求;节点板的上弦杆与腹杆之间、左右腹杆之间的圆弧转角处出现一定的应力集中现象;上、下翼板的应力相比其他板件的要大。
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| 关 键 词： | 桥梁工程 整体焊接节点 模型试验 应力集中 |
A Node Experimental Study of a Highway & Rail Double-layer Large-span Steel Truss Bridge |
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| YAN Xing-fei,DENG Wei-lin,PENG Jun,ZHOU Liang.A Node Experimental Study of a Highway & Rail Double-layer Large-span Steel Truss Bridge[J].China Municipal Engineering,2011(5):68-72. |
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| Authors: | YAN Xing-fei DENG Wei-lin PENG Jun ZHOU Liang |
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| Affiliation: | YAN Xing-fei,DENG Wei-lin,PENG Jun,ZHOU Liang(Shanghai Urban Construction Design & Research Institute,Shanghai 200125,China) |
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| Abstract: | Taking the typical integral welded joint of Shanghai Minpu Bridge Ⅱ for example,an experimental study about steel truss girder integral welded joint stress whole process is completed under different load cases by use of node model in this paper.The results indicate that 1) the safety and reliability of the nodes can meet the requirements of relevant standards under the condition of the designed load case and the over-load case;2) stress concentration has appeared on the arc-shaped corners of upper chords & web members and right & left web members;3) the stress of top & bottom plates is bigger than other ones. |
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| Keywords: | bridge engineering integral welded joint model test stress concentration |
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