为了适应市场对大跨度楼盖结构的需要，在总结当前楼盖体系主要指标的基础上，提出一种新的“大跨度预应力空腹楼盖结构”体系。此结构不仅可满足跨度18m左右的建筑需要，且使楼盖结构层高度相对降低。并对这一结构进行了初步设计和内力分析，从而证实了其良好的空间工作性能，是一种具有广阔应用前景的新体系。 In order to meet the needs of the market for large-span floor structures, a new “large-span prestressed open-space floor structure” system was proposed based on a summary of the main indicators of the current floor system. This structure can not only meet the needs of the building with a span of about 18m, but also make the height of the structural layer of the floor relatively lower. The preliminary design and internal force analysis of this structure were carried out, thus confirming its good space performance and being a new system with broad application prospects.