论文部分内容阅读
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 relative slip effect between steel girders and concrete causes the deformation of steel-concrete composite beams to increase. The existing conversion section method for the calculation of composite girder deformation does not consider the slip effect, resulting in a small calculated value and unsafe for the deformation. The reduction stiffness method was used to consider the effect of slip effect on the deformation of the composite beam, and a simplified practical calculation formula of the stiffness reduction factor was established. The calculated deflection values of the composite beam under the applied load are in good agreement with the experimental results.