宽翼缘组合梁结构剪滞效应计算分析与试验研究

胡少伟; 喻江; 谢建锋

doi:10.3879/j.issn.1000-0887.2014.04.009

宽翼缘组合梁结构剪滞效应计算分析与试验研究

doi: 10.3879/j.issn.1000-0887.2014.04.009

¹南京水利科学研究院, 南京 210024;²河海大学土木与交通学院, 南京 210098

基金项目: 国家杰出青年基金（51325904 ）；国家自然科学基金（51279111）

详细信息

作者简介:
胡少伟（1969—），男，河南人，教授，博士，博士生导师(通讯作者. E-mail: hushaowei@nhri.cn)

中图分类号: O302
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- 被引次数: 0
出版历程
- 收稿日期: 2013-10-12
- 修回日期: 2013-11-30
- 刊出日期: 2014-04-15

Analytic Solution and Experimental Study on Shear Lag Effect of Steel-Concrete Composite Beams With Wide Flanges

¹Nanjing Hydraulic Research Institute, Nanjing 210024, P.R.China;²College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, P.R.China

Funds: The National Science Fund for Distinguished Young Scholars of China（51325904）;The National Natural Science Foundation of China（51279111）

摘要

摘要: 剪滞效应将导致钢-混凝土组合梁翼缘板纵向正应力沿翼板宽度方向分布不均，从而产生不利的横向裂缝.因此，有必要深入研究剪滞效应对宽翼缘组合梁结构的作用机理，以便加以防范.根据组合翼板微元的变形协调条件和平衡微分方程，建立了薄壁双箱组合梁翼板横截面法向应力微分方程.在考虑两端简支的边界条件下，利用解析解法求得其解析应力解.最后给出算例，通过与室内试验结果进行比较，表明该文方法具有较好的精度和实用性.
- 组合梁结构 /
- 剪滞效应 /
- 解析解法 /
- 试验验证
Abstract: The sheer lag effect of the steel-concrete composite beam leads to nonuniform distribution of longitudinal stress along the width of flange, thus probably producing disadvantageous transverse cracks. And so, it is necessary to further study the mechanism of shear lag effect of the steel-concrete composite beams with wide flanges, in order to prevent those cracks. The cross-section normal stress differential equation was established for the thin-walled double-room box composite beams, based on the combination of flange micro-unit deformation compatibility condition and equilibrium differential equation; and the analytic stress solution was obtained with the simple-support boundary condition at both ends of the composite beam considered. Finally, the analytic solution was compared with the results of model tests, to prove the accuracy and applicability of the presented method.
- composite beam /
- sheer lag effect /
- analytic method /
- experimental validation

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参考文献(24)

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