Based on the experimental results , in concrete limitation stress sandwich first stage ' s ability and one - way and two - way precast slabs sandwich , results content code require - second class crack control . resistant crack calculation is appropriate . because post - tensioned prestressed advances plane ' s resistant crack . deformation and section strain measure accord with calculation results , this indicates 3d - gridding beams modulus is reasonable to precast slabs sandwich 本文通过对试验数据的分析总结，认为：单块夹层板第一受力阶段的性能试验及单向和双向装配整体式夹层板的性能试验，满足《混凝土结构规范》 ( gb50010 - 2002 )中关于预应力楼板的二级裂缝控制等级的要求，抗裂设计得当；由于板缝无粘结预应力筋的存在提高了板的抗裂性。
