钢管混凝土框架结构抗震性能的试验研究*
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（1天津大学建筑工程学院；2江汉石油学院土建系）
［提要］ 按照现行规范的有关规定设计制作了一榀两跨3层钢梁’圆钢管混凝土柱的钢管混凝土框架结构模型，并通过施加恒定竖向荷载和低周反复水平荷载，对模型框架进行了抗震性能试验研究。结果表明，基于现行规范所设计的钢管混凝土框架在地震时能形成梁铰破坏机制，框架的变形能力、承载能力、延性、耗能能力等受力性能均满足延性框架的抗震要求，且模型框架的有效延性系数达到了7.54，远大于一般延性框架延性系数应不小于4.0的要求。由此可以得出结论，钢管混凝土框架结构的抗震性能优于钢筋混凝土框架结构和钢框架结构，可在我国中高层住宅建筑中推广应用。［关键词］ 钢管混凝土,框架结构,抗震性能,模型试验,低周反复水平荷载,延性,承载力耗能Abstract: According to the related specifications in current Chinese codes，a 2 bays，3-stories model of concrete-filled steel tubular(CFST)frame is designed and manufactured，and the experimental research on its seismic behavior is carried out under vertical stable loads and lateral cyclic loads．The test results show that the CFST frame may form the beam hinged collapse mechanism under lateral cyclic loads，and its deformation capacity，bearing capacity，ductility and energy dissipation may meet the requirement for seismic design of ductile frames，in which the effective ductility factor of the model frame reaches 7．54 and is far greater than the required value 4．0 of the ordinary ductile frames．The seismic performance of the CFST frames is superior to that of reinforced concrete frames or steel frames，SO that the CFST frames may be broadly applied to the multistory residential buildings in our country．Keywords：concrete-filled steel tubular(CFST)frame; seismic behavior; model experiment; lateral cyclic load; ductility; bearing capacity; energy dissipation
