钢筋桁架组合楼板刚度影响因素的试验研究

Experimental research on factors influencing the rigidity of concrete composite slab with steel bar truss

钢筋桁架组合楼板是一种新型组合楼板,在使用阶段,钢筋桁架、底部钢板和混凝土楼板形成了一个整体,共同承受使用荷载。文章设计了5块足尺钢筋桁架混凝土楼板试件的静力加载试验,得到了使用阶段不同设计参数的单向板构件的破坏形式和不同荷载下的变形,分析试验结果可知,底部钢板对钢筋桁架组合楼板受力性能和刚度的影响不可忽略,此外钢筋桁架高度也是主要影响因素。

The concrete composite slab with steel bar truss is a new type of composite slab .At service stage , the steel bar trusses ,bottom steel plate and concrete slab form the structural system which can afford service loads .The static loading test which contains five full-scale specimens of concrete slab with steel bar truss is designed ,and the failure modes of one-way plate components with different design parameters at service stage and their displacements under various loads are gotten .The test results show that the influence of bottom steel plate on the rigidity and stress performance of the concrete composite slab with steel bar truss should not be ignored ,and the height of steel bar truss is also critical .