钢管约束钢筋混凝土压弯构件抗震性能与设计方法  

Seismic behavior and design method of tubed reinforced concrete (RC) beam-columns

作　　者：刘景云[1] 张小冬[1] 刘界鹏[1] 

机构地区：[1]哈尔滨工业大学建筑设计研究院,哈尔滨150090

出　　处：《哈尔滨工业大学学报》2009年第6期11-15,共5页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(50708027);黑龙江省自然科学基金(E2007-24)

摘　　要：为研究钢管约束钢筋高强混凝土压弯构件的抗震性能和设计方法,进行圆钢管和方钢管约束钢筋高强混凝土压弯构件的滞回性能试验研究.试验结果表明,由于钢管对核心混凝土的有效约束,核心高强混凝土柱的承载力、延性和耗能能力得到显著提高.在轴压比和钢管径厚比相同的条件下,圆钢管约束钢筋混凝土压弯构件的抗弯承载力和延性明显优于方钢管约束钢筋混凝土.根据试验结果,建立钢管约束钢筋混凝土压弯构件的纤维模型方法和截面抗弯承载力计算方法,计算结果与试验结果吻合极好.To investigate the seismic behavior and design method of tubed reinforced concrete （RC） beam - columns, circular tubed RC （ CTRC ） and square tubed RC （ STRC ） columns were experimentally studied. Results indicate that CTRC and STRC columns with high axial load ratio exhibit much higher flexural strength, displacement ductility and greater energy dissipation capability than common RC columns due to the effective confinement of the tube to the core concrete. The moment strength and ductility of CTRC columns are higher than those of STRC columns with the same axial load ratio and diameter - to - thickness ratio. The design method for steel tube confined RC beam - columns is proposed based on the experimental results. Fiber models are developed for CTRC and STRC beam - columns, and the analysis results of fiber models agree well with the experimental resuhs.

关 键 词：圆钢管约束钢筋混凝土 方钢管约束钢筋混凝土 压弯构件 纤维模型 

分 类 号：TU398[建筑科学—结构工程]