某项目后浇型与密拼缝型桁架钢筋叠合楼板有限元分析比较

在桁架钢筋叠合楼板中,板与板之间的不同拼接形式,直接影响着整体楼板的受力。本文以具体实例为基础,对后浇型和密拼缝型两种最常用拼接方式的不同叠合楼板进行限元程序ABAQUS受力分析,并从混凝土、钢筋的拉压应力、裂缝、挠度等方面受力结果进行比较。结果表明,后浇型和密拼缝型叠合楼板虽然拼接方式不同,在一些受力的细节方面存在差异,但总体的受力形式较为接近。在满足合理的构造要求的情况下,均能较好地表现出双向板的受力模式。

Finite Element Analysis and Comparison of the Post-casting Type and Close-fitting Truss-Reinforced Composite Floor Slabs

In the truss-reinforced composite floor slabs,the different splicing forms between the slabs directly affect the stress of the whole slab.Based on specific examples,this paper conducts the finite element program ABAQUS stress analysis of the two most commonly used splicing floors of the post-casting type and the close-fitting joint type,and compares the stress results from the tensile and compressive stress,cracks and deflection of concrete and steel bars.The results show that although the post-casting type and the close-fitting type superimposed floor slab have different splicing methods,there are differences in some details of the stress,but the overall stress form is relatively close.In the case of satisfying reasonable structural requirements,they can better show the force mode of the two-way plate.