摘要
为了准确分析钢-混凝土组合梁的抗弯性能,基于接触理论和弹性力学基本思想推导了钢-混凝土组合梁在竖向荷载作用下考虑剪切滑移效应的微分方程,给出了解析解。计算了竖向集中力作用下组合梁的各部分应变和位移状态,分析了钢梁和混凝土顶板交界面处的剪切滑移应变差,并与试验结果进行了对比。结果表明:计算值与试验值有较好的一致性,挠度相对误差不超过2%;该计算公式是合理的、可信的,为工程设计提供了一种简便的计算方法,具有较强的实用价值。
In order to accurately analyze the flexural behavior of steel-concrete composite beam,based on contact theory and basic idea of elastic mechanics and considering the shear-slip effect,differential equation of the structure under vertical load was deduced and analytical solution was given.The strain and displacement conditions of composite beam under vertical load were calculated by the analytical solution.Shear-slip strain difference of interface of steel beam and concrete top slab was also analyzed.The results calculated by this method were compared with test result.Result shows that test value has a good agreement with calculated value obtained from a simple beam experiment,and the deflection error is less than 2%.It is concluded that this equation is rational,believable and practical.The method can be used as a simple and convenient analytical method for construction design.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2010年第4期39-44,共6页
China Journal of Highway and Transport
基金
国家高技术研究发展计划("八六三"计划)项目(2009AA11Z104)
吉林省教育厅"十一五"科学技术研究项目(2009173)
关键词
桥梁工程
钢-混凝土组合梁
接触理论
抗弯性能
竖向集中荷载
bridge engineering
steel-concrete composite beam
contact theory
flexural behavior
vertical load
