【摘要】 为克服型钢混凝土柱-钢梁组合框架结构体系存在的缺点,提出了一种新型外包钢混凝土组合梁-型钢混凝土柱组合框架结构体系。设计制作了一榀一跨两层型钢混凝土柱-外包钢砼梁的组合框架结构模型,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,基于现行规范及作者新研究外包钢组合梁计算理论所设计的型钢混凝土组合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7.93。可见,新型型钢混凝土组合柱-外包钢混凝土组合梁框架结构的抗震性能优于钢框架结构和型钢混凝土柱-钢梁框架结构,可在高层建筑中应用。更多还原

【Abstract】 To overcome the shortcoming of common composite frame structure,the authors put forward a new type of frame structure system,steel-encased composite beam-steel reinforced concrete column.A 1 bay and 2-stories model of composite frame is designed and manufactured.The composite frame is composed of steel-encased concrete composite beams(SCCB) and steel reinforced concrete columns.Experiments on the seismic behavior of the frame are carried out under vertical stable loads and lateral cyclic loads.And its deformation capacity,bearing capacity,ductility and energy dissipation basically meet the requirement for seismic design of ductile frames.SCCB frame may form the beam-hinged collapse mechanism when it is destroyed.Its effective ductility factor reaches 7.93.We may draw a conclusion that SCCB frames merit broad applications to the multistory residential buildings in our country as the design has been improved by us.更多还原