| 大悬臂多腹板宽箱梁受力特性研究 |
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| 引用本文： | 华波,朱朝阳,朱安静.大悬臂多腹板宽箱梁受力特性研究[J].交通科技,2012(2):1-3. |
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| 作者姓名： | 华波 朱朝阳 朱安静 |
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| 作者单位： | 中国市政工程西北设计研究院有限公司 武汉430056 |
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| 摘 要： | 结合工程实际,应用有限元软件MIDAS/CIVIL分别建立杆系有限元模型和空间实体模型,对大悬臂、多腹板、宽箱室变截面箱梁在对称荷载作用下的剪力滞效应、偏载作用下的腹板受力不均匀效应进行分析。结果表明,截面上下翼缘剪力滞效应较为显著,按规范提供的有效翼缘宽度折减计算不能完全包络剪力滞效应的影响;同时,箱梁的偏载效应从跨中至支点方向逐渐增大。
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| 关 键 词： | 大悬臂 多腹板 宽箱梁 剪力滞 偏载 |
Force Analysis for Broad Box Girder with Long Cantilever and Multi Web |
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| Hua Bo
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Zhu Chaoyang
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Zhu Anjing.Force Analysis for Broad Box Girder with Long Cantilever and Multi Web[J].Transportation Science & Technology,2012(2):1-3. |
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| Authors: | Hua Bo Zhu Chaoyang Zhu Anjing |
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| Institution: | (Northwest Design and Research Institute Co.,Ltd.,of China Municipal Engineering,Wuhan 430056,China) |
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| Abstract: | Based on practical engineering,stick-system finite model and solid model were established respectively by finite element software MIDAS CIVIL in order to carry on the analysis of shear lag effect under asymmetrical loading and non-uniform load under partial load of tapered box girder with long cantilever,multi web and wide box.The result of calculation indicates that the section upper and lower shear lag effect is significant and formulas for effective flange width according to code cannot overcasts the shear lag effect completely.Meanwhile the offset load effect of box girder increases gradually from mid-span to supports. |
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| Keywords: | long cantilever multi web wide box shear lag offset load |
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