北京新机场航站楼大跨度钢结构主楼C1区静力和抗震性能试验研究  

Experimental study on static and seismic performance of long-span steel structure in C1 area of Beijing New Airport Terminal Building

作　　者：张爱林[1,2] 牟俊霖 刘学春[1,2] 王小青 方浩 马晓飞[1] 束伟农[3] 朱忠义[3] ZHANG Ailin;MU Junlin;LIU Xuechun;WANG Xiaoqing;FANG Hao;MA Xiaofei;SHU Weinong;ZHU Zhongyi(College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China;Beijing Engineering Research Center of High-Rise and Large-Span Prestressed Steel Structure,Beijing University of Technology,Beijing 100124,China;Bejing Institute of Architectural Design,Beijing 100045,China)

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京工业大学北京市高层和大跨度预应力钢结构工程技术研究中心,北京100124 [3]北京市建筑设计研究院有限公司,北京100045

出　　处：《建筑结构学报》2020年第4期1-10,共10页Journal of Building Structures

基　　金：北京市科技计划(Z161100001216010)。

摘　　要：北京新机场航站楼大跨度钢结构的最大结构单元长度504 m,最大跨度125 m,属于超限高层建筑结构。选取北京新机场航站楼屋盖钢结构C1区结构单元制作1∶10缩尺模型进行静力和拟静力试验,研究C形柱体系与上部屋盖结构组成的整体结构的静力和抗震性能。研究结果表明:在竖向荷载作用下,结构响应的试验值与有限元模拟值吻合较好;在水平往复荷载作用下,C形柱的破坏形式为局部杆件的屈曲和断裂,在破坏发生后C形柱的承载能力没有显著下降,变形没有显著增大,整体稳定性能良好;C1区整体结构的耗能能力比较稳定,进入弹塑性工作阶段后结构刚度衰减较快;C1区整体结构的破坏模式为广义的梁端出现塑性铰,满足"强柱弱梁"的结构设计要求;C1区整体结构可以承受超过9度罕遇地震作用,结构具有较高的安全储备,抗震性能良好。The long-span steel structure of Beijing New Airport Terminal Building is an over-limit high-rise building structure. Its maximum structural length is 504 m and its maximum span is 125 m. In order to investigate the static and seismic performance of the overall structure composed of a C-shaped column system and an upper roof structure,a static test and a pseudo-static test were conducted on a 1∶ 10 scale model of the structural unit in the C1 area of the roof steel structure of the Beijing New Airport Terminal Building. The results indicate that the experimental values of the structural response under vertical loading is consistent with the finite element analysis values. The failure modes of the C-shaped column structure under horizontal cyclic loading were the buckling and fracture of local members. After the failure occurred,the bearing capacity of the C-shaped column structure did not decrease significantly and the deformation did not increase significantly. It indicates that the C-shaped column structure has a good overall stability.The energy dissipation capacity of the C1 overall structure was relatively stable,and the stiffness degradation of the structure was significant when it entered the elastic-plastic state. The failure mode of the C1 overall structure was in the form of plastic hinges at the end of the generalized beam,which met the structural design concept of ‘strong columns and weak beams ’. The C1 overall structure can withstand the impact of rare earthquake of magnitude exceeding 9 degrees. The structure has a high safety reserve and good seismic performance.

关 键 词：大跨度钢结构 C形柱 缩尺模型 静力试验 拟静力试验 抗震性能 

分 类 号：TU393.303[建筑科学—结构工程]