(1 同济大学建筑工程系 上海 200092； 2 南京工业大学土木工程学院 210009)
［提要］ 通过1∶2隅撑支撑钢框架模型的单调加载试验，研究了隅撑支撑钢框架的抗侧力性能和破坏机理。试验结果表明，在水平荷载作用下隅撑最先发生屈服，并具有很好的变形能力，结构具有很好的滞回耗能性能和延性。对隅撑支撑钢框架进行了弹塑性受力分析，并给出了其恢复力模型，从而为简化隅撑支撑钢框架的非线性分析提出了一种新的方法。
［关键词］ 隅撑支撑钢框架 抗侧力性能 破坏机理 弹塑性受力分析 恢复力模型
Experimental Study and Elastoplastic Analysis of the Kneebracesteelframe/Sun Aifu1,Dong Jun2,Wang Zhaomin1(1 Department of Building Engineering, Tongji University, Shanghai 200092，China；2 College of Civil Engineering, Nanjing University of Technology,Nanjing 210009,China)
Abstract:Experiment on 1∶2 model of the kneebracedsteelframe was conducted
under monotonic load to investigate the lateral loadresisting performance and
its failure mechanisms.The experimental results show that under horizontal loads the knee element can yield firstly and has excellent deformation capacity This makes the kneebracedsteelframe has excellent capacity of energy dissipation and ductility. Then the kneebracesteelframe is elasticplastic analyzed and its restoring force model is given to present a new way that can simplify the nonlinear analysis of the kneebracedsteelf
rame.
Keywords:kneebracesteelframe; resistantlateral behavior; fracture mechanism; restoring force model