混合配筋预应力混凝土双向密肋板结构性能的试验研究  

Saudy on Structural Behavior of Waffle Slab Floor with Unbonded Prestressed Tendons and Nonprestressed Steel

作　　者：徐金声[1] 林春哲[1] 洪婉儿[1] 

机构地区：[1]中国建筑科学研究院

出　　处：《建筑结构学报》1995年第1期3-15,共13页Journal of Building Structures

基　　金：国家自然科学基金;建设部联合资助

摘　　要：本文通过四块密肋板１／３缩尺模型在短期使用荷载下和承载能力极限荷载下的试验观测，探讨了混合配筋预应力混凝土双向密肋板结构在加载过程中的性能（挠度、裂缝、破坏形式和无粘结筋极限应力状态）；并用实验数据检验了电算程序ＰＦＧ──１９９３［１３］和无粘结筋极限应力状态的改进的表达式的准确性；对极限承载力计算中次力矩的效应提出了设计建议，可供结构设计应用。Through the experiments of 4 1/3 scale waffle slab models subjected to short-term service load and ultimate load, the structural behavior of prestressed concrete waffle slab floor with composite reinforcement (deflections, cracks, failure modes and ultimate stress states of unbonded tendons) at different loading stages have been investigated. The experimental data have been used to checkthe accuracy of the program PFG-1993[13] and the improved equation for predicting the stress in unbonded prestressing tendons under ultimate load.Finally, the effect of secondary moment at the ultimate limit state design has also been suggested.

关 键 词：预应力混凝土 双向密肋板 结构性能 配筋 试验 

分 类 号：TU378[建筑科学—结构工程]