缩口型压型钢板-混凝土组合板的承载力及变形(二):考虑滑移效应的折减刚度  

Load-carrying and Deforming Capacities of Composite Slabs with Re-entrant Trough Profiled Steel Sheeting(Ⅱ): Reduced Rigidity with Consideration of Slip Effects

作　　者：聂建国[1] 唐亮[1] 黄亮[1] 

机构地区：[1]清华大学土木工程系结构与振动教育部重点实验室,北京100084

出　　处：《建筑结构》2007年第1期65-67,共3页Building Structure

基　　金：高等学校博士点基金资助项目(2000000344)

摘　　要：压型钢板与混凝土之间的相对滑移对压型钢板-混凝土组合板的变形影响较大。现行有关规范在计算组合板挠度时,未考虑滑移效应,导致变形计算值偏低,偏于不安全。在钢-混凝土组合梁挠度计算的折减刚度法基础上,考虑组合板自身的受力特点,提出了考虑滑移效应的组合板折减刚度公式。试验结果表明,该法能较准确地预测组合板在正常使用状态下的挠度。The slip effect between profiled steel sheeting and concrete in composite slabs has an evident contribution to the deformation of the slab. However, it is ignored in the current design method of composite slabs such as the transformed section method. Therefore, the deflection obtained by this method is relatively low and the structure may be on the unsafe side. A new method is presented in which the slip effect is taken into account based on the reduced rigidity method of composite beams. The results predicted by this method have a good agreement with those obtained from tests.

关 键 词：压型钢板-混凝土组合板 滑移效应 折减刚度 挠度 

分 类 号：TU375.2[建筑科学—结构工程]