| 混凝土箱梁顶板横向预应力框架效应分析 |
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| 引用本文： | 张启亮.混凝土箱梁顶板横向预应力框架效应分析[J].石家庄铁道学院学报,2007,20(2):49-51,60. |
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| 作者姓名： | 张启亮 |
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| 作者单位： | 贵州中铁路桥公司,贵州都匀558004 |
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| 摘 要： | 针对目前预应力混凝土箱梁腹板开裂现象比较普遍这一现象,拟从预应力混凝土箱梁顶板横向预应力框架效应查找开裂原因。首先,分析了箱梁截面参数对顶板预应力横向框架效应的影响,然后结合具体预应力混凝土连续箱梁桥,分析了预应力混凝土箱梁顶板横向框架效应所引起的腹板竖向拉应力,得到了一些有意义的结论,可为改进该类桥梁的设计提供参考。
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| 关 键 词： | 预应力混凝土箱梁 横向预应力 框架效应 腹板 开裂 |
| 文章编号： | 1006-3226（2007）02-0049-04 |
| 收稿时间： | 2007-04-26 |
| 修稿时间： | 2007-04-26 |
Analysis of Frame Effect of Concrete Box Girder Caused by Crown Plate Transverse Tendon |
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| Zhang Qiliang.Analysis of Frame Effect of Concrete Box Girder Caused by Crown Plate Transverse Tendon[J].Journal of Shijiazhuang Railway Institute,2007,20(2):49-51,60. |
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| Authors: | Zhang Qiliang |
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| Institution: | Guizhou China Railway Bridge Company, Duyun 558004, China |
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| Abstract: | The phenomenon of web and anchorage zone cracks of continuous PC box girder is fairly common. This paper intends to find the cause of web cracks from frame effect of PC box girder caused by crown plate transverse tendon. The influence of box girder cross section dimension on frame effect of PC box girder caused by crown plate transverse tendon is studied. Then, taking several continuous PC box girder bridges as examples, the vertical tension stress caused by frame effect is analyzed and several significant conclusions are drawn. |
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| Keywords: | PC box girder transverse tendon frame effect web crack |
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