钢支撑框架受力性能研究-结构工程专业论文.docxVIP

万方数据 万方数据 Subject :The Research on the Performance of Steel-braced Frames Specialty : Structural Engineering Name : Wang Yan (Signature) Instructor :Guo Bingshan (Signature) ABSTRACT In the steel frame systems,the concentrically braced steel frame (CBSF) has good lateral force resistance performance,is one of the most common used lateral force resisting system in the rise steel structure,and also it has broad prospects for engineering applications. However,because of the brace and the frame have different lateral force resistance capacity,the integrated structure stress performance become very complicated,now researches on the CBSF structure are finite in our country,and theoretical study lags behind engineering practice,therefore researching for its performance has an important theoretical significance and engineering applications value. In this paper,concentrically braced steel frame (CBSF) model was established,which using Sap2000 software and setting up three-dimensional model to study the finite element numerical simulation.Considering about the influence on the performance of steel-braced frames from series model of different brace category,different brace layout and different slenderness ratio of the brace,establishing 13 models,using modal analysis and static elastic -plastic analysis,study structure’s period,floor displacement,story drift angle and plastic hinges’s development regular and distribution characteristic. The research show that: the period ,the floor displacement and the story drift angle of pure frame are much larger than the inverted-V concentrically braced steel frame (CBSF), the stiffness and the lateral force resistance performance of the inverted-V CBSF is much better than the pure frame.The period ,the floor displacement and the story drift angle of the V-shaped CBSF are larger than the inverted-V CBSF, the stiffness and the lateral force resistance performance of the inverted-V CBSF is superior to the V-shaped CBSF. Diff