新型全钢加劲屈曲约束支撑性能分析及试验研究  

PERFORMANCE ANALYSIS AND EXPERIMENTAL STUDY OF A NEW TYPE OF STEEL STIFFENING BUCKLING RESTRAINED BRACES

作　　者：董洁[1] 吴鹏[1] 丁婷[2] 黄镇[1] 刘毅[3] 侯兆新[3] 

机构地区：[1]东南大学土木工程学院,南京210096 [2]江苏省邮电规划设计院有限责任公司,南京210001 [3]中冶建筑研究总院有限公司,北京100088

出　　处：《钢结构》2016年第3期1-5,共5页Steel Construction

基　　金："十二五"国家科技支撑计划项目(2012BAJ13B01)

摘　　要：针对传统屈曲约束支撑的不足,提出一种新型全钢加劲屈曲约束支撑。根据该新型支撑约束单元的构造及受力特点,提出简化的力学分析模型,对该型支撑的整体稳定及局部稳定问题进行分析,并对核心单元与约束单元间隙及摩擦作用进行了讨论。对该型支撑进行的数值模拟分析和性能试验研究结果表明:简化的理论分析模型可用于工程实践中屈曲约束支撑的设计;新型全钢加劲屈曲约束支撑滞回曲线饱满,耗能性能稳定。A new type of steel stiffening Buckling-Restrained Brace（ BRB） considering the shortcomings of traditional BRB was presented. In accordance with the characteristics of the configuration and behavior of steel stiffening BRB,a simplified mechanical analysis model of BRB was proposed. The overall stability and local stability were analyzed. The gap and friction between the core and the restraint were also discussed. Numerical analysis and experimental study were carried out. The results indicated that the simplified mechanical analysis model was reliable in the application of BRB in practical projects. The hysteretic curve of steel stiffening BRB was plumper and the energy dissipation behavior was stable.

关 键 词：全钢加劲屈曲约束支撑 简化模型 数值分析 试验研究 

分 类 号：TU391[建筑科学—结构工程]