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预制装配式钢筋混凝土薄壳屋盖应用于大中跨度的建筑物时,既需要充分发挥它在力学性能上的优越性,又需要简化施工方法,加快工程进度,它通常由预制装配式钢筋混凝土双曲拱壳、钢或预应力混凝土水平拉杆、钢筋混凝土拱脚圈梁三部分组成。拱圈主拱轴线以采取圆弧拱为好,这样预制构件规格最少,其矢跨比以1/10左右为好,太小则水平力增加很快,从而要加大拉杆断面;太大则建筑物立面造型不易处理好。垂
When prefabricated reinforced concrete thin-shell roofs are used in large and medium-span buildings, it is necessary to give full play to its superiority in mechanical properties, but also to simplify the construction method and speed up the progress of the project. It is usually made of prefabricated reinforced concrete. Double curved arch shell, steel or prestressed concrete horizontal tie rod, reinforced concrete arch foot ring beam consists of three parts. The main arch axis of the arch circle is preferably arc arched, so that the prefabricated component has the least specification, and its span ratio is better than 1/10. If it is too small, the horizontal force increases rapidly, so as to increase the cross section of the rod; The facade of the building is not easy to handle. Hanging