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工程实践中可以把单波单跨的柱面网壳作为一个结构单体,在横向和纵向扩展形成单波多跨、多波单跨以及多波多跨的整体矩形平面屋盖系统。通过研究位于多波多跨柱面网壳4个不同区域的网壳单体,发现相同区域内的单体受力性能非常接近。并且依据不同区域网壳单体的约束情况建立相应的简化模型,通过分析比较简化模型和整体模型中相应单体的受力特性,可以得到二者的受力性能也比较接近。同时应用简化的单体模型考虑网壳杆件的截面选择和张弦柱面网壳中预应力设计的问题,也都能得到比较好的效果。
In engineering practice, a single-wave single-span cylindrical reticulated shell can be used as a structural unit to expand into a rectangular rectangular flat roof system with single-wave multi-span, multi-wave single span and multi-wave multi-span in both horizontal and vertical directions. Through the study of the reticulated shell cells located in four different regions of the multi-wave multi-span cylindrical reticulated shell, it is found that the mechanical properties of single cells in the same region are very close. Based on the constraints of the single shell in different regions, a corresponding simplified model is established. By comparing and analyzing the force characteristics of the corresponding simple model and the overall model, the force performance of the two can be obtained. At the same time, the simplification of the single-body model can also get better results when considering the cross section selection of the shell member and the prestressing design of the string shell.