摘要
压型钢板-混凝土组合楼板在我国工程设计中越来越多地考虑其组合效应,组合楼板的剪切-粘结性能受到了工程设计人员的重视,通过9块足尺寸简支板的系列性能试验,总结了压型钢板-混凝土组合楼板剪切-粘结破坏的形态及受力变形性能,利用回归分析提出了以混凝土抗拉强度特征值ft表征的剪切-粘结承载力计算公式,并得到了试验板型的粘结系数。分析表明,采用ft和采用国际上通行的f′c表征的计算式得出的计算结果具有等同的相关性,这为组合楼板剪切-粘结承载力的计算适应我国规范体系提出了新的思路。并给出了该板型在设计时的建议修正公式。
With more and more considerations given to the com bination effect of composite floor design in our country, designers should pay much attention to floor shear-bond p erform ance. To summarize the behavior and shear-bond failure modes of this closed pro filed sheeting-concrete composite slab, series experiments were conducted on 9 full-scale simply supported composite slabs. Proposed the calculation formula of shear-bond bearing capacity by ft through regressive analysis meth od was proposed and coefficients for this steel plate were. It was i ndicated that equation expressed by ft or f′c had a similar relativity which provided new thought to fit our code. Finally the proposed revised formula was give n for the design of this slab.
出处
《钢结构》
2005年第3期30-34,共5页
Steel Construction
