| 考虑波纹钢腹板箱梁特点的挠度分析 |
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| 引用本文： | 刘保东,任红伟,李鹏飞.考虑波纹钢腹板箱梁特点的挠度分析[J].中国铁道科学,2011,32(3). |
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| 作者姓名： | 刘保东 任红伟 李鹏飞 |
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| 作者单位： | 1. 北京交通大学,土木建筑工程学院,北京,100044
2. 北京交通大学,土木建筑工程学院,北京,100044;交通运输部,公路科学研究院,北京,100088 |
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| 基金项目： | 国家自然科学基金资助项目，交通运输部西部交通科技项目 |
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| 摘 要： | 基于波纹钢腹板箱梁特点,利用变分原理法,推导考虑箱梁剪力滞和剪切变形影响的波纹钢腹板箱梁挠度计算公式.结合室内模型试验和有限元分析,对该公式的有效性进行验证,并分析各影响因素对波纹钢腹板箱梁挠度的影响程度.分析结果表明:该公式的计算结果与试验和有限元分析的结果具有较高的一致性,表明该公式可用于波纹钢腹板箱梁设计和施工中的挠度计算,剪力滞对正应力分布有影响,剪切变形对正应力分布没有影响;与初等梁理论的计算结果比较,剪力滞效应和剪切变形分别增大波纹钢腹板箱梁挠度1.3%和44.7%.因此在实际计算波纹钢腹板箱梁挠度时,不可忽略剪力滞和剪切变形的影响.
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| 关 键 词： | 箱梁 波纹钢腹板 挠度 变分原理法 剪力滞 剪切变形 |
Deflection Analysis Considering the Characteristics of Box Girder with Corrugated Steel Webs |
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| LIU Baodong,REN Hongwei,LI Pengfei.Deflection Analysis Considering the Characteristics of Box Girder with Corrugated Steel Webs[J].China Railway Science,2011,32(3). |
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| Authors: | LIU Baodong REN Hongwei LI Pengfei |
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| Institution: | LIU Baodong1,REN Hongwei1,2,LI Pengfei1(1.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China,2.Research Institute of Highway,Ministry of Communications,Beijing 100088,China) |
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| Abstract: | Based on the characteristics of box girder with corrugated steel webs, using the variational principle method,the deflection formula of box girder with corrugated steel webs was deduced.The effects of shear lag and shear deformation on the box girder were considered in the deflection formula.Combined with the results of the indoor model test and the finite element analysis,the effectiveness of the formula was verified and the influence degree of each influencing factor on the deflection of box girder with c... |
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| Keywords: | Box girder Corrugated steel web Deflection Variational principle method Shear lag Shear deformation |
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