【摘要】 围绕大跨度预应力混凝土楼盖工程,建立了空间计算模型。以抗裂验算为设计重点,讨论了框架结构和井字梁两种楼盖布置方案。通过分析计算,比较了各自的预应力筋用量、结构内力以及变形的分析,提出了在设计中较优的结构方案,及应注意的问题和相应措施。更多还原

【Abstract】 Focus on project of long span concrete floor,the spatial calculated models are built.Frame structure and crossing girder structure are considered.Through emphasizing on beam cracking capacity,the number of prestressed steel area,internal force and displacement are calculated.As compared with two structural plans,the design method is put forward to satisfy the technical specification.更多还原