中文摘要：

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.

英文摘要：

In order to fully grasp the structural behavior of tubular hollow slab,a nonlinear finite element analysis on this new type of hollow structure is conducted with ANSYS.The threedimensional finite element models of two kinds of tubular hollow slabs which have different arrangement manner of the high-strength thin-walled tubes are both established,which proved rational and highly computational efficient.The finite element model of parallel slab is a separated type of model which is almost the same as the actual structure.The steel and concrete are considered separately,and the tubes are also separated from the surrounding concrete to establish its own model.The finite element model of vertical slab is an integral model of steel smearing the concrete,but the tubes are still separated from the surrounding concrete.Through the comparison between finite element analysis results and experimental results,it is shown that the finite element model established is correct and rational.And through finite element analysis,the stress and strain of the tubes inside the slab which is difficult to investigate in experiment are grasped.The analysis shows that the tubes and the concrete are incorporated into one body.The tubes work together with concrete in taking load and producing deformation.The finite element analysis makes up for the deficiency of experimental study,and offers an effective and economic model platform for further study on this kind of structure.