基于抗侧刚度比的防屈曲支撑钢框架住宅设计及分析  

DESIGN AND ANALYSIS OF BUCKLING RESTRAINED BRACED STEEL FRAME RESIDENCE BASED ON LATERAL STIFFNESS RATIO

作　　者：王宏伟[1] 苑清山[2] 叶达伟[1] 赵志东[2] 覃建华[1] Wang Hongwei Yuan Qingshan Ye Dawei Zhao Zhidong Qin Jianhua(School of Civil Engineering, Guangzhou University, Guangzhou 510006, China Beijing Metallurgical Equipment Research Design Institute Co. Ltd, Beijing 100029, China)

机构地区：[1]广州大学土木工程学院,广州510006 [2]北京中冶设备研究设计总院有限公司,北京100029

出　　处：《钢结构》2017年第2期72-76,53,共6页Steel Construction

摘　　要：为探讨支撑钢框架结构中支撑的合理设计方法,以抗侧刚度比为控制指标,对一栋20层的钢结构住宅进行防屈曲支撑的优化设计。基于弹塑性时程分析,对比防屈曲支撑框架结构在固定抗侧刚度比与变化抗侧刚度比对结构性能的影响。研究结果表明:在防屈曲支撑总截面面积不变化的情况下,相对于固定抗侧刚度比的结构,采用变化抗侧刚度比结构的最大层间位移角均有所降低,在保证支撑用量不变的前提下,提高了结构整体抗震性能。In order to explorate the reasonable design method of the braces in the Braced steel frame structure, an optimal design for the buckling restrained brace of a 20 storeys steel structure was conducted with the lateral stiffness ratio as the control aim. According to the elasti-plastic time history analysis, the different effects between the design of fixed lateral stiffness ratio and variable lateral stiffness ratio of buckling restrained braced steel frame on the structural performance were compared. The results showed that under the condition of contant area of the total cross section for the buckling restrained brace, the maximum storey displacement angle of the structure With fixed lateral stiffness ratio was higher than that of the structure with variable lateral stiffness ratio, on the premise of ensuring the same amount of braces, the aseismic performance of the overall structure should be improved.

关 键 词：钢结构住宅 防屈曲支撑 抗侧刚度比 层间位移角 

分 类 号：TU391[建筑科学—结构工程]