西南交通大学学报2011，Vol.46Issue(4)：541-546,6.DOI:10.3969/j.issn.0258-2724.2011.04.003
组合梁挠度计算的新方法——有效刚度法
Effective Stiffness Method for Calculation of Deflection of Composite Beams
摘要
Abstract
Accurate calculation of deflection of composite beairs with elastic shear connections is difficult because of difficultly getting an analytical solution under an arbitrary load, and analytical solutions in common load cases are quite complicated. For these reasons, a simplified calculation method called " method of reduction of stiffness" was provided in Chinese Code for Design of Steel Structures. However, the results obtained by the method are not accurate enough and its application is limited under some circumstances. In order to solve the above problem, a new method called "effective stiffness method" was proposed. Calculations with this method are simple and accurate, and the proposed method has a clear mechanic background and can give a composite factor showing the actual effect of shear connections. It can be used to composite beams with an arbitrary stiffness of shear connections, I. E. , from near zero to infinity. The calculation results show that the relative error between its solutions and analytical solutions is less than 1.0%.关键词
有效刚度法/组合梁挠度/弹性剪切连接/组合系数Key words
effective stiffness method/ deflection of composite beam/ elastic shear connection/ composite factor分类
建筑与水利引用本文复制引用
周东华,孙丽莉,樊江,赵志曼,刘永芳..组合梁挠度计算的新方法——有效刚度法[J].西南交通大学学报,2011,46(4):541-546,6.基金项目
国家自然科学基金资助项目(50778086) （50778086）
云南省自然科学基金资助项目(2006E0024M) （2006E0024M）
教育部博士点基金资助项目(20095314110008) （20095314110008）
