| 小箱梁桥虚拟横梁建模法中虚横梁间距选取研究 |
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| 引用本文： | 葛素娟,李静斌.小箱梁桥虚拟横梁建模法中虚横梁间距选取研究[J].河南科学,2009,27(10):1289-1291. |
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| 作者姓名： | 葛素娟 李静斌 |
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| 作者单位： | 郑州大学土木工程学院,郑州,450001 |
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| 基金项目： | 河南省杰出人才计划项目 |
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| 摘 要： | 利用大型有限元通用软件MIDAS对40m跨小箱梁桥建立实体单元模型和虚拟横梁单元模型,针对不同虚横梁间距模型分别计算了6种荷载工况下的跨中竖向位移,并与实体单元模型跨中竖向位移相比较,得出虚横梁间距为1/10～1/8跨长时,与实体单元的误差最小,建模时依据该结论取虚横梁间距.此结论也可以供其他跨径小箱梁桥建模计算时参考.
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| 关 键 词： | 小箱梁桥 虚横梁间距 研究 |
Research of the Virtual Beam Spacing during Modeling Virtual Beams of Small Box-Girder Bridge |
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| Ge Sujuan,Li Jingbin.Research of the Virtual Beam Spacing during Modeling Virtual Beams of Small Box-Girder Bridge[J].Henan Science,2009,27(10):1289-1291. |
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| Authors: | Ge Sujuan Li Jingbin |
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| Institution: | (School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China) |
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| Abstract: | The solid element model and the virtual beam element model of 40 m small box-girder bridge are builded by using finite element software MIDAS.The midspan vertical displacement of the bridge were calculated for six kinds of load conditions of the different virtual beam spacing models,and comparing with the midspan vertical displacement of the solid element model.The deviation between them is the smallest,when the virtual beam spacing is 1/10～1/8 span.Other long-span small box-girder bridge can reference the conclusion. |
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| Keywords: | small box-girder bridge virtual beam spacing research |
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