南通兴东机场新建T3航站楼结构分析与设计

Structural analysis and design on the building of Nantong Xingdong Airport Terminal 3

南通机场T3航站楼为复杂、超长、大跨结构,主楼下部主体结构为钢筋混凝土框架结构,屋盖采用三角形立体钢桁架结构。结合建筑体型,对航站楼合理设缝和后浇带,并在混凝土施工时适当添加抗裂剂,解决了超长混凝土收缩产生的裂缝问题;采用预应力混凝土连续梁满足了建筑竖向净空和平面大空间的要求;在合适位置设置耗能型抗震屈曲约束支撑,可有效提高由航站楼特殊工艺布置产生的不规则结构的整体抗震性能。

The structural of Nantong Xingdong Airport terminal 3 is complex,super- length and large span. Reinforced concrete frame structure was adopted as low- part structure and triangular three- dimensional steel truss was adopted as roof. Combined with the building size,the reasonable setting expansion joint and post cast strip for terminal building,and in the concrete construction of the appropriate adding of anti cracking agent,to solve the problem of super- length concrete cracks. The prestressed concrete continuous beam is adopted to satisfy the vertical clearance and plane space requirements. In the proper position,the energy dissipation seismic buckling restrained brace can effectively improve the overall seismic performance of the irregular structures produced by the special process layout of the terminal building.