1)长安大学建筑工程学院，西安，710061；2)西安建筑科技大学，710055；3)西安高架快速干道工程建设有限责任公司，710004
［提要］对某3层3跨的纵向消能支撑框架模型结构进行了拟静力加载试验。介绍了试验情况，并根据试验结果对模型结构的变形性能和位移反应进行了研究，对部分构件的转角位移及其延性进行了分析，指出了此结构的薄弱层，并提出了加强措施。试验结果表明，消能支撑框架模型结构具有良好的延性性能和耗能能力。给出了模型结构刚度参数的确定方法和公式，提出了设计建议，为进一步的理论分析和工程应用奠定基础。
［关键词］纵向消能支撑框架；变形性能；位移反应；刚度参数
Analysis of Deformation Performance and  Stiffness of Longitudinal Frame Model with Energydissipation Braces/Sun Xianghong1,2, Wang Sheliang2, Yao Tao2,3(1 College of Civil Engineering, Chang"an University, Xi"an 710061, China;2 Xi"an University of Architecture & Technology, Xi"an 710055, China;3 Xi"an Liability of Elevated Express Way Project Co., Ltd., Xi"an 710004, China)
Abstract:The pseudostatic test on the longitudinal frame model of 3 stories and 3 spans with energydissipation braces is carried out. The experimental summary is briefly introduced. On the basis of experimental results, the deformation performance and ductility of the model structure are studied. Strengthening measure for weak story is put forward. The results indicate that the structure is of good ductility and energydissipation capacity, which meets the requirements of code. A method and a simplified formula for the determination of the stiffness parameter are proposed. Some recommendations to seismic design are presented for the sake of advanced theoretical analysis and engineering practice.
Keywords:longitudinal energydissipation braced frame; deformation performance; stiffness parameter
*国家自然科学基金资助项目（50278077）;长安大学自然科学青年基金资助项目（04Q01）。