带X型支撑钢筋混凝土框架结构抗震性能分析

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发布时间：2022-07-05

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摘要:为了提高钢筋混凝土框架结构抵抗超设防烈度地震的能力,研究了在框架中合理设置支撑对
结构看能的号时间：工程 2.新种不同约机方卡——钢27.
框架、带 X型钢管支撑钢筋混凝土框架和带X型钢管混凝土支撑钢筋混凝土框架结构在强震作用
下的受力性能进行了Pushover分析。结果表明:在钢筋混凝土框架结构中合理设置支撑可以有效
提高结构抗侧刚度，增大结构耗能能力和抗震能力,减小结构顶点侧移和层间侧移;不同材料的支
撑起到的抗震效果也不相同,对于本文分析模型，合理设置钢管混凝土支撑起到的抗震效果比设置
钢管支撑更加明显。
关键词:钢筋混凝土框架结构;X型支撑;抗震性能；能力谱法
中图分类号：TU375
文献标志码：A
Analysis of Seismic Performance of RC Frame Structure with X-bracings
FAN Hai-tao，WANG Zhi-xin，ZHAO Huang juan, SUN Ai-fu
(School of Civil Engineering , Yantai University, Yantai 264005,Shandong，China）
Abstract: In order to improve the seismic performance of reinforced concrete (RC) frame
structure under strong earthquake, the influences of rational arranging bracings on the seismic
performances were investigated. Analysis models of 8-story RC frame without bracing, with steel
tube x-bracings and with concrete-filled steel tube x-bracings were built, and Pushover analysis
of mechanical behavior under strong earthquake of these models was carried out. The results
show that the rational arranging bracings in RC frame structure can efficiently increase the
structural lateral stiffness, energy dissipation capacity and seismic performance, and significantly
decrease the top displacement and the story drift of the RC frame structure. The seismic effects
or different materialbracingsarenotthesame.and to analvsis modesinthe paper. the concrete
filled steel tube bracings can provide more seismic effect than the steel tube bracings for the Rc
frame,
Key words：RC frame structure；X-bracing；seismic performance；capacity spectrum method
0 引言
造成了巨大的经济损失和人员伤亡。
中国是强震多发国家之一，钢筋混凝土框架结
近年来,世界各地强震频发,智利的8.8级地
构具有平面布置灵活、施工技术比较成熟的优点,是
震,海地的7.0级地震、新西兰的7.8级地震、日本
在中国抗震区广泛使用的一种结构形式：但钢筋混
的9.0级地震以及中国的唐山地震、汶川地震等都
凝土框架抗侧刚度小,水平荷载作用下侧移大,结构