摘要
钢梁和混凝土之间的相对滑移效应使钢-混凝土组合梁变形增大.组合梁变形计算的现行换算截面法未考虑滑移效应,导致变形计算值偏小、偏于不安全.本文提出用折减刚度法考虑滑移效应对组合梁变形的影响,建立了刚度折减系数的简化实用计算公式.利用本文方法算得的组合梁在使用荷载作用下的挠度计算值与实验结果吻合良好.
The slip effect between steel and concrete in composite beam has an evident contribution to the deformation of the beam.However, this slip effect is ignored in the current design method of composite beam such as the transformee section method. Thus, the deformation obtained by this method are relatively small and the structure may be on the unsafe side. In this paper, a reduced rigidity method is presented in which the slip effect is taken into account in calculating the deformation of composite beam. A simple formula using the parameters of the reduced rigidity is proposed. The results calculated by this method has a good agreement with those obtained from experiment.
出处
《土木工程学报》
EI
CSCD
北大核心
1995年第6期11-17,共7页
China Civil Engineering Journal
基金
国家教委回国留学人员科研资助项目
