型钢混凝土异形柱抗震性能足尺试验研究  

FULL-SCALE TEST RESEARCH ON SEISMIC PROPERTIES OF SPECIAL-SHAPED COMPOSITE STEEL CONCRETE COLUMNS

作　　者：刘平[1,2] 王泽桐 崔赛月 赵青山 LIU Ping;WANG Zetong;CUI Saiyue;ZHAO Qingshan(School of Civil Engineering,Hebei University of Technology,Tianjin 300401,China;Civil Engineering Technology Research Center of Hebei Province,Tianjin 300401,China;Hebei Tuowei Engineering Design Co.,Ltd.,Langfang 065000,China)

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]河北省土木工程技术研究中心,天津300401 [3]河北拓为工程设计有限公司,河北廊坊065000

出　　处：《工业建筑》2020年第6期156-160,188,共6页Industrial Construction

基　　金：河北省自然科学基金项目(E2018202290、E2017202278);天津市建委科技项目。

摘　　要：通过对4个足尺型钢混凝土异形柱的低周往复荷载试验,对其滞回曲线、承载能力、位移、延性、刚度退化、耗能能力等性能指标进行分析。研究结果表明:相比于足尺钢筋混凝土异形柱试件,试件内部添加型钢,可以减缓试件裂缝的发展,降低试件破坏程度;剪跨比较大时试件发生弯曲破坏,剪跨比较小时试件发生剪切破坏;相比于足尺钢筋混凝土异形柱试件,在保证试件内部配筋率的前提下,通过内部增加型钢,可以提高试件的承载能力、滞回性能、变形能力、耗能能力和刚度退化率,改善抗震性能;当减少钢筋混凝土异形柱内部纵筋配筋率并内置型钢时,试件的承载力得到提高。Four full-scale special-shaped composite steel concrete columns were tested under quasi-static loading,and the hysteretic curve,bearing capacity,displacement and ductility,stiffness degeneration and energy dissipation were analyzed.The results showed that compared with the full-scale special-shaped reinforced concrete column specimens,the addition of steel inside the specimens could slow down the development of cracks and reduce the damage degree of the specimens.Bending failure occurred when the special-shaped column specimen had a large shear-span to depth ratio.When the shear span to depth ratio was small,the shear failure occurred to the specimen.Compared with the full-scale special-shaped reinforced concrete column specimen,on a premise of ensuring the internal reinforcement ratio of the specimen,the addition of steel inside specimens could improve the seismic performance of specimens,including bearing capacity,hysteresis performance,deformation capacity,energy consumption capacity and stiffness degradation rate.When the longitudinal reinforcement ratio of the special-shaped reinforced concrete column was reduced and the steel was added inside specimens,the bearing capacity was improved.

关 键 词：型钢混凝土异形柱 抗震性能 足尺试验 低周往复荷载 剪跨比 

分 类 号：TU398.9[建筑科学—结构工程] TU352.11