预应力技术在某机场航站楼大厅结构设计中的应用  

Application of prestress technique in structural design of an airport terminal hall

作　　者：朱建甫[1] 熊小林[1] 冯远[1] 吴小宾[1] 陈志强[1] 易丹[1] 

机构地区：[1]中国建筑西南设计研究院有限公司

出　　处：《建筑结构》2018年第1期1-4,共4页Building Structure

摘　　要：某机场航站楼大厅为超长混凝土框架结构体系,主要柱网尺寸为9m×9m和15.888m×18m。对于9m×9m轴网的大跨度区域,设置后张直线无粘结预应力筋,用于抵抗由于结构超长产生的混凝土收缩应力和温度应力;对于15.888m×18m轴网的大跨度区域,设置后张曲线有粘结预应力筋,用于提高梁的承载力,并满足梁的正常使用极限状态要求,同时也解决由于结构超长产生的混凝土收缩应力和温度应力。An airport terminal hall is super-long concrete frame structural system with the main column grid sizes of 9 m × 9 m and 15. 888 m × 18 m. In 9 m × 9 m column grid size area with large-span,straight unbonded post-tensioned prestressed tendons are set to resist concrete shrinkage and temperature stresses due to the super-long structure. In 15. 888 m × 18 m column grid size area with large-span,bonded post-tensioned prestressed tendons are set to improve bearing capacity of beams,which meets the requirement of beams in serviceability limit state and solves the problems of shrinkage stress and temperature stress of concrete due to super-long structure.

关 键 词：机场航站楼 超长框架结构 大跨度 后张预应力 温度应力 

分 类 号：TU378.4[建筑科学—结构工程]