【摘要】 以均布荷载作用下的简支组合梁为研究对象,同时考虑滑移效应和纵向剪力重分布的影响,将界面受力全过程划分为3个工作阶段,通过建立截面曲率函数,推导了组合梁挠度变形的计算公式,并将根据本文公式得到的计算结果与按我国钢结构设计规范建议的折减刚度法得到的计算结果进行了比较。研究表明:当荷载超过0.5倍的极限荷载时,按本文方法得到的挠度结果普遍大于根据规范得到的计算值。更多还原

【Abstract】 The effects of slip and longitudinal shear-force redistribution were taken into consideration for the study of simply supported composite beams under uniform distribution load,with the mechanics full-range of interface divided into three work-stages.Based on the curvature function,a set of formulae for calculating the deflection of composite beams were presented at different work-stage.The(deflection) obtained from these formulae were compared with that calculated by the reduced rigidity method suggested in the code of steel(structures) design of P.R.China.The research shows that when load exceeds half ultimate load,the deflection calculated by the proposed method is greater than that calculated under the design code.更多还原