支撑钢框架结构住宅支撑优选研究  

RESEARCH ON THE OPTIMIZATION OF BRACES FOR BRACED STEEL FRAME STRUCTURE RESIDENCES

作　　者：李素娟[1] 王宏伟[2] 张化振[1] 叶达伟[2] 覃建华[2] LiSujuan Wang Hongwei Zhang Huazhen Ye Dawei Qin Jianhua(Beijing Metallurgical Equipment Research Design Institute Co. Ltd, Beijing 100029, China School of Civil Engineering, Guangzhou University, Guangzhou 510006, China)

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

出　　处：《钢结构》2017年第2期66-71,共6页Steel Construction

摘　　要：针对一栋20层钢结构住宅,对其中心支撑和防屈曲支撑的组合支撑布置方案进行研究。引入中心支撑替换率的概念,设计了5种不同中心支撑替换率的结构布置方案,运用Perform 3D非线性分析软件,采用静力弹塑性分析和时程分析方法对5种设计替换率方案进行了抗震性能对比,考虑结构抗震性能与经济性因素,得出了混合支撑钢框架中防屈曲支撑的最优替换率。结果表明:综合结构最大层间位移角变化曲线及等效支撑用量变化曲线,以该结构为基础,支撑的替换率控制在35%,能够在不影响结构性能的前提下最大限度降低结构造价。In order to study the mixed braces＇ arrangement of the center braces and buckling restrained braces, a 20 storeys steel structure residence was designed. The concept of replacement ratio of concentrically braces was introduced to design five structures with different replacement ratio of the concentrically braces. Through the nonlinear analysis software- perform 3D, the aseismic performance of five schemes with different replacement ratio were compared by using the method of pushover method analysis and time history analysis. The optimal replacement ratio of buckling restrained brace in the mixed braced steel frame was obtained by considering the aseismic performance and economic factors. The results showed that based on that structure and considered the variation curves of the maximum storey drift angle and the equivalent amount of braces, the cost of the structure could be further reduced without affecting the performance of structure.

关 键 词：钢结构住宅 中心支撑 防屈曲支撑 支撑替换率 优选 

分 类 号：TU973.13[建筑科学—结构工程]