建筑结构学报2024，Vol.45Issue(5)：253-261,9.DOI:10.14006/j.jzjgxb.2023.0040
基于三角级数解的钢-混凝土组合梁弹性弯曲变形计算方法
A novel theoretical method of elastic bending deformation of steel-concrete composite beams based on trigonometric series solution
摘要
Abstract
The current bending deformation calculation formula for steel-concrete composite beams considering interface slip effects lacks wide adaptability and is inconvenient for the structural design.To address this issue,a triangular series was used to characterize the displacement function of elastic bending deformation and interface slip of composite beams,and a theoretical calculation model of elastic bending deformation and interface slip was derived for simply supported composite beams under different loading conditions based on the principle of minimum potential energy and variational method.Consequently,a unified explicit solution for the bending stiffness and interface slip value of composite beams was obtained.The effectiveness and accuracy of the proposed method were verified against with a large number of experimental results and existing calculation methods.The results showed that the bending stiffness calculation formula for steel-concrete composite beams derived from the triangular series solution was concise,intuitive,and physically meaningful,and the results were reliable.Therefore,the proposed novel method can accurately calculate the bending deformation of composite beams in serviceability limit state.关键词
钢-混凝土组合梁/界面滑移/弯曲变形/三角级数解/统一计算公式Key words
steel-concrete composite beam/interface slip/bending deformation/trigonometric series solution/unified calculation formula分类
建筑与水利引用本文复制引用
叶华文,蒋成川,黄澳,冯治皓,叶杨帆,周渝..基于三角级数解的钢-混凝土组合梁弹性弯曲变形计算方法[J].建筑结构学报,2024,45(5):253-261,9.基金项目
国家重点研发计划项目(2023YFB2604400,2023YFB2604403),国家自然科学基金项目(52278219). （2023YFB2604400,2023YFB2604403）
