（中国建筑西南设计研究院有限公司， 成都 610041）

［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。

［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

中图分类号：TU378-4文献标识码：A文章编号：1002848X(2018)01-0001-04

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

Zhu Jianfu, Xiong Xiaolin, Feng Yuan, Wu Xiaobin, Chen Zhiqiang, Yi Dan

(China Southwest Architectural Design and Research Institute Co., Ltd.， Chengdu 610041， China)

Abstract:An airport terminal hall is super-long concrete frame structural system  with the main column grid sizes of 9m×9m and 15-888m×18m. In 9m×9m 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 15-888m×18m 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.

Keywords:airport terminal hall; super-long frame structure; large-span; post-tensioned prestress; temperature stress

作者简介：朱建甫，硕士，高级工程师，一级注册结构工程师，Email:crazyzjf@163.com。