隅撑支撑布置对高层RC框架抗震性能影响研究  

Research on vulnerability of layout optimization of knee brace in high rise reinforced concrete frame

作　　者：代正帅 卜文豪 Dai Zhengshuai;Bu Wenhao(College of Civil Engineering,Yantai University,Yantai Shandong 264005,China)

机构地区：[1]烟台大学土木工程学院,山东烟台264005

出　　处：《山西建筑》2025年第6期46-50,55,共6页Shanxi Architecture

摘　　要：隅撑支撑具有构造简单、抗震性能好、震后易于更换的特点。设计了一个10层的RC框架结构,通过在结构竖向上优化隅撑支撑布置层数来比较不同布置方案之间框架的抗震性能。利用有限元软件opensees对两种不同布置方案的支撑框架进行易损性评估。结果表明,通过隅撑支撑在框架结构中的合理使用,框架的破坏概率得到了很好的降低;当PGA较低时,在结构竖向上连续布置隅撑支撑的结构,抗震性能表现较好;在PGA达到0.35g之后,按照设防烈度下纯框架结构最大层间位移角出现位置布置隅撑支撑的方案,使得结构失效概率显著降低。Knee brace have the characteristics of simple structure,excellent seismic capacity and easy to replace after earthquakes.This article design a 10 story RC frame structure and compares the seismic capacity of the frame between different layout schemes by optimizing the number of layers in the vertical of the structure.Vulnerability assessment of Knee-braced-frames with two different arrangement schemes by opensees.The results indicate that the reasonable use of knee brace in the frame structure has significantly reduced the failure probability of frame;When the peak ground acceleration is low,structures that are fully supported by Knee braces in the vertical direction of the structure have better seismic capacity;After the peak ground acceleration reaches 0.35 g,the scheme of arranging Knee braces according to the position of the maximum story dirft ratio of the structure has effectively reduced the failure probability of frame.

关 键 词：隅撑支撑 支撑布置 易损性 抗震性能 

分 类 号：TU375.4[建筑科学—结构工程]