| 斜拉桥钢-混凝土组合索塔锚固区焊钉剪力分布 |
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| 引用本文： | 曾明根,苏庆田,吴冲.斜拉桥钢-混凝土组合索塔锚固区焊钉剪力分布[J].桥梁建设,2008(4). |
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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： | 结合上海长江大桥工程,采用空间有限元模型,计算在斜拉索索力作用下钢-混凝土组合索塔锚固区焊钉的剪力,分析焊钉竖向剪力、横向剪力和合剪力分别在索塔竖桥向和横桥向的分布规律.结果表明各剪力沿索塔竖桥向和横桥向分布相当不均匀,在竖桥向塔顶焊钉剪力大、塔底剪力小,在横桥向外侧焊钉剪力大、中间焊钉剪力小.对焊钉横向间距的调整,能有效改善焊钉剪力在横桥向的不均匀程度.焊钉刚度对焊钉最大剪力有很大影响,在设计中需予以重视.
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| 关 键 词： | 斜拉桥 桥塔 钢锚箱 组合结构 焊钉 剪力 |
Shear Force Distribution of Welded Studs in Anchorage Zone of Steel and Concrete Composite Pylon of Cable-Stayed Bridge |
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| ZENG Ming-gen,SU Qing-tian,WU Chong.Shear Force Distribution of Welded Studs in Anchorage Zone of Steel and Concrete Composite Pylon of Cable-Stayed Bridge[J].Bridge Construction,2008(4). |
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| Authors: | ZENG Ming-gen SU Qing-tian WU Chong |
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| Institution: | ZENG Ming-gen,SU Qing-tian,WU Chong(Department of Bridge Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | With reference to the Shanghai Changjiang River Bridge Project,the three-dimensional finite element model is used to calculate the shear forces of welded studs in anchorage zone of steel and concrete composite pylon of cable-stayed bridge under the action of stay cable forces.The distribution laws of the vertical,transverse and resultant shear forces of the studs in the pylon respectively verical and transverse to the bridge are analyzed.The results of analysis show that each type of the shear forces in the... |
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| Keywords: | cable-stayed bridge pylon steel anchor box composite structure welded stud shear force |
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