预应力板-柱结构地下车库的设计探讨及经济对比  

Research on the Design and Economic Contrast of the Underground Garage with the Prestressed Concrete Slab-column Structure

作　　者：张彩凤 董卫东[2] ZHANG Cai-feng;DONG Wei-dong(China Jiangsu International Economic and Technical Cooperation Group Co.,Ltd,Nanjing Jiangsu 210000 China;Jiangsu Research Institute of Building Science Co.,Ltd,Nanjing Jiangsu 210008 China)

机构地区：[1]中江国际集团建筑设计院,江苏南京210000 [2]江苏省建筑科学研究院有限公司,江苏南京210008

出　　处：《江苏建筑》2020年第6期51-53,70,共4页Jiangsu Construction

摘　　要：文章针对板-柱结构地下车库的预应力设计,将有限元方法并与常用的等代框架法进行对比,探讨了柱帽对结构内力的影响。作者对考虑柱帽影响的预应力次弯矩与等代框架法的计算结果进行了对比,并讨论了板中预应力筋及普通钢筋的配筋方式及计算普通钢筋时柱上板带和跨中板带预应力筋的分配比例。最后,针对一个工程实例将预应力设计方案与非预应力的设计方案进行经济对比,得出在板柱结构中采用预应力是一种经济可行的方法。In this paper,aiming at the prestressed design of slab-column structure underground garage,the author used finite element method,and compared with equivalent frame analysis method,also discussed the influence of column cap.The author compared the prestressed secondary moment in the influence of the column cap with the results calculated by the equivalent frame analysis method,and discussed the reinforcement way of the slab-column structures and the distribution proportion of the prestressed reinforced.At last,according to an engineering example,the author made an economic comparison with the design scheme which was not used prestressing,and obtained that it was economical and feasible to use prestressing in slab-column structures.

关 键 词：板-柱结构 预应力设计 有限元方法 柱帽 预应力次弯矩 预应力筋的分配比例 经济对比 

分 类 号：TU378.3:TU926[建筑科学—结构工程]