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（北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045）

［摘要］采用鋼框架-屈曲約束支撐結(jié)構(gòu)體系以增強(qiáng)整體結(jié)構(gòu)的抗震性能；在小震作用下，通過對(duì)鋼框架和屈曲約束支撐結(jié)構(gòu)進(jìn)行彈性對(duì)比分析，表明屈曲約束支撐能更有效提高結(jié)構(gòu)的平動(dòng)、抗扭剛度；采用SAUSAGE對(duì)設(shè)屈曲約束支撐結(jié)構(gòu)進(jìn)行大震下的動(dòng)力彈塑性分析，研究結(jié)構(gòu)在大震下塑性發(fā)展過程、滯回曲線、最大層間位移角及能量消耗分布情況，表明屈曲約束支撐耗能占比較大，能有效保護(hù)主體結(jié)構(gòu)；用ABAQUS對(duì)典型支撐連接節(jié)點(diǎn)進(jìn)行有限元分析，保證節(jié)點(diǎn)在大震下保持彈性，表明整體結(jié)構(gòu)和節(jié)點(diǎn)滿足大震下的變形和承載力要求。

［關(guān)鍵詞］?？跈C(jī)場(chǎng)； 屈曲約束支撐； 鋼框架； 動(dòng)力彈塑性分析； 節(jié)點(diǎn)有限元分析

中圖分類號(hào)：TU352-1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)18-0079-04

Seismic performance analysis on steel frame-buckling restrained brace structure of Haikou Airport Comprehensive Transportation Center

Xu Yanfeng, Lü Guang, Yu Donghui

(Beijing Institute of Architectural Design， Beijing 100045， China)

Abstract:The steel frame-buckling restrained brace structural system was adopted to enhance the seismic performance of the overall structure; under small earthquakes, through the comparative analysis of the elastic analysis on steel frame and buckling restrained brace structure, it indicates that buckling restrained brace can effectively improve the translational and torsional stiffness of the structure; SAUSAGE was used to conduct the dynamic elastic-plastic analysis on the buckling restrained brace under the rare earthquake to study the plastic development process, hysteretic curve, largest interlayer displacement angle and energy dissipation distribution conditions of the structure,  which indicate that energy dissipation of buckling restrained brace covers a large proportion to effectively protect the main structure; ABAQUS was used to conduct finite element analysis of typical support and connection nodes to guarantee the nodes remain elastic in the earthquake, which indicate that the overall structure and node meet the requirements of deformation and bearing capacity under the rare earthquake.

Keywords:Haikou Airport; buckling restrained brace; steel frame; dynamic elastic plastic analysis; finite element analysis on node

作者簡介：徐彥峰，碩士，工程師，Email：xu-yan-feng@163.com。