大跨度现浇混凝土空心楼盖结构内力分析方法与工程应用

Analysis method and engineering application of large span cast-in-situ concrete hollow floors

以某典型大跨度现浇混凝土空心楼盖项目为例,分别用有限元法、拟梁法和拟板法对大跨度现浇混凝土空心楼盖进行分析。通过对计算结果进行比较,得出整体计算有限元模型能真实模拟构件的边界条件,直观反映各区域的内力分布情况,有限元法计算结果优于其他方法。因此提出了在合理划分网格的情况下,有限元法最适用于大跨度现浇混凝土空心楼盖的结论,并介绍了大跨度现浇混凝土空心板技术在熙汇广场项目的实际应用。

Taking a typical large-span cast-in-situ concrete hollow floor as an example,the finite element method,analogue cross beam method and plate analogy method were used to analyze the results. By comparing the calculated results,it is concluded that the finite element model of the whole calculation can simulate the boundary condition of the component,and reflect the distribution of internal forces intuitively. The result of the finite element method is better than other methods.Therefore,the conclusion that the finite element method is suitable for large-span cast-in-situ concrete hollow floor was put forward,and the practical application of large-span cast-in-situ concrete hollow floor in Xihui Square project was presented.