| 大跨斜拉桥扁平钢箱梁受力计算 |
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| 引用本文： | 曾明根,苏庆田,吴冲.大跨斜拉桥扁平钢箱梁受力计算[J].桥梁建设,2007(3):17-19,23. |
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| 作者姓名： | 曾明根 苏庆田 吴冲 |
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| 作者单位： | 同济大学桥梁工程系,上海,200092 |
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| 摘 要： | 主跨1 088 m的苏通大桥主梁采用扁平钢箱梁,分别用杆系有限元法和混合有限元方法计算其内力,得到了箱梁板件的应力,并对二者结果进行比较,结果表明混合有限元方法能较真实反映主梁板件的受力情况,特别是能直接反映出在车轮局部荷载作用下顶板应力变化和主梁的应力在横桥向分布不均匀性。
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| 关 键 词： | 斜拉桥 钢箱梁 有限元法 力学分析 |
| 文章编号： | 1003-4722（2007）03-0017-03 |
| 修稿时间： | 2007-03-13 |
Mechanical Calculation of Flat Steel Box Girder of Long Span Cable-Stayed Bridge |
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| ZENG Ming-gen,SU Qing-tian,WU Chong.Mechanical Calculation of Flat Steel Box Girder of Long Span Cable-Stayed Bridge[J].Bridge Construction,2007(3):17-19,23. |
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| Authors: | ZENG Ming-gen SU Qing-tian WU Chong |
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| Institution: | Department of Bridge Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | The flat steel box girder was designed for the main girder of Sutong Bridge with a main span 1 088 m.In this paper,the link finite element and mixed finite element methods are respectively used to calculate the internal force of the box girder,the plate stress of the girder has therefore been obtained and the results of calculation by the two kinds of the methods are compared.The results show that the mixed finite element method can fairly truly represent the plate stress of the main girder,especially can directly represent the stress variations of the top plate under local wheel load and the non-uniformity of the main girder stress distribution transverse to the Bridge. |
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| Keywords: | cable-stayed bridge steel box girder finite element method mechanical analysis |
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