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预应力混凝土马鞍形壳板(以下简称壳板)屋盖是属于一种梁板合一的轻型屋面结构。由于其横截面为凹形曲面,纵剖面成一跨中高两端低的凸形曲面,所以能较快地把雨水集中向两端排泄,是一种自防水性能较好的构件。但在大跨度中由于其体形大、自重大、运输困难,故壳板都在现场生产。目前24米跨壳板一般沿用单块生产,进度较慢,从而在大跨度使用推
The prestressed concrete saddle-shaped shell (hereinafter referred to as the shell) roof is a lightweight roof structure with a beam-plate joint. Because its cross-section is a concave curved surface, and its longitudinal profile is a convex curved surface with a low height at both ends, it can discharge rainwater to the two ends quickly. It is a component with good waterproof performance. However, due to its large size, heavy weight, and difficulty in transportation, the shell plates are all produced on site. At present, 24-meter trans-shells generally follow the single-block production, and the progress is slower, so that the use of push in large spans