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为全面掌握圆管式空心板受力性能,基于ANSYS对这种新型空心结构进行了非线性有限元分析.对两种不同布管方式的圆管式空心板建立了合理而计算效率较高的三维有限元模型.其中顺管向板将钢筋、混凝土与管分开建模,得到了与实际结构非常接近的分离式模型.横管向板将钢筋弥散于混凝土中,但仍将管与混凝土分开考虑,建立了整体式模型.有限元分析结果与试验结果的对比验证了有限元模型的正确性.通过有限元分析掌握了试验中难以测量的薄壁管应力应变状况.分析表明薄壁管与周围混凝土基本融合一体,共同受力与变形.有限元分析弥补了试验研究的不足,为以后进一步深入研究该结构提供了一个有效而经济的模型平台.
In order to fully understand the mechanical performance of the circular tube hollow slab, the nonlinear finite element analysis of this new hollow structure was carried out based on ANSYS.The reasonable and high computational efficiency of the two hollow tube hollow slab tubes The three-dimensional finite element model, in which the tube-to-tube plate models the steel bars, concrete and pipe separately, gives a detached model that is very close to the actual structure. The cross-tube plate disperses the rebar into the concrete but separates the pipe from the concrete Considering, the integral model was established. The comparison between the finite element analysis and the experimental results verified the correctness of the finite element model. The stress and strain of the thin-walled tube which was difficult to measure in the experiment was grasped by finite element analysis. The surrounding concrete is basically integrated, with the common force and deformation.The finite element analysis makes up for the lack of experimental research, which provides an effective and economical model platform for further study of the structure in the future.