摘   要：PKG预制底板是直接在2.4~6.0 m跨PK预应力混凝土预制底板的混凝土肋上外包内卷边C型槽钢所得，其特点是工业化预制程度高，预制过程支模简单、有利于成品保护，预制底板及其叠合后的叠合楼板刚度大。由于PK预制底板受力性能均已满足规范要求，外包型钢后，其力学性能有很大富余度。本文研究了PKG板的截面参数，并编制了仅输入板跨和板宽即可进行PKG板迭代设计计算的MATLAB程序，对2.4~6 m跨PKG预制底板考虑最小用钢量时的肋高、预应力钢筋数目等进行了截面优化和规整化设计，利用程序迭代设计计算了6.3~9 m跨的PKG预制底板，最终设计出了截面合理、力学性能优异的既满足规范要求又适合于工业化生产的PKG预制底板；并对PKG叠合楼板的工业化生产与施工进行了介绍，可为PKG预制底板的设计及叠合板的生产、施工提供参考。

Abstract: The PKG precast baseplate is directly to outsource inner edge C channel steel on concrete ribs of the PK prestressed concrete precast baseplate within the span of 2.4~6.0 m, which has such advantage as high degree of industrialized precast, formwork rectification of prefabricated process is simple, and it is advantageous to the finished product protection, stiffness of precast baseplate and composite slab is big. Since the performance of the PK precast baseplate has contented the requirements of the specification, the mechanical properties of the outsourced section steel have a great degree of redundancy. The section parameter of the PKG slab is studied, and the MATLAB program that can be done iterative design and calculation of the PKG slab only inputing span and width of slab has been designed, the costal height, the number of prestressed reinforcement bars and so on of the PKG precast baseplate that has considered the minimum amount of steel have been carried the section optimization and regularization design within the span of 2.4~6.0 m, and the iterative design program was used to calculate the PKG precast baseplate within the span of 6.3~9 m. Finally, the PKG precast baseplate with reasonable section, excellent mechanical properties, contenting the specification requirements and suitable for its industrialized production was designed, and the industrial production and construction of PKG composite slab are briefly introduced, which can provide a reference for the design of the PKG precast baseplate and production construction of the PKG composite slab.