b钢管混凝土柱RC梁框架计算模型研究.pdfVIP

第22 卷第6 期 工 程 力 学 Vol.22 No.6 2005 年 12 月 ENGINEERING MECHANICS Dec. 2005 文章编号 1000-4750(2005)06-0117-05 RC 环梁连接的钢管混凝土柱 RC 梁框架 计算模型研究 * 1 1 2 周栋梁 钱稼茹 方小丹 (1. 清华大学 北京 100084 2. 华南理工大学 广州510641) 摘 要 RC 环梁连接的钢管混凝土柱 RC 梁框架在竖向荷载和水平荷载作用下 在环梁一定高度范围内 环梁 与柱之间会有很窄的缝隙 通过有限元分析研究了环梁连接的转角刚度和环梁区域框架梁等效宽度以及它们的影 响因素 结果表明环梁宽度和框架梁宽度对转角刚度和等效宽度影响较大 框架内力 位移计算以及两层两跨框 架结构的静力试验和拟动力试验表明 环梁连接的钢管混凝土柱 RC 梁框架可以采用梁柱直接刚性连接的模型 进行弹性分析 关键词 钢管混凝土柱 环梁 转角刚度 等效宽度 计算模型 中图分类号 TU375 文献标识码 A ANALYSIS MODEL OF STEEL-TUBE CONFINED CONCRETE COLUMN AND RC BEAM FRAME CONNECTED BY RC RING BEAM * 1 1 2 ZHOU Dong-liang , QIAN Jia-ru , FANG Xiao-dan (1. Tsinghua University, Beijing 100084, China; 2. South-China Polytechnic University, Guangzhou 510641, China) Abstract: For the steel tube confined concrete (STCC) column-RC beam frame connected by reinforced concrete (RC) ring beam subjected to combined vertical and horizontal loads, there may be a very narrow gap between the ring beam and the column at certain height. The gap has influence on the frame stiffness. By finite element analysis (FEA) of the beam-column joints, the rotation stiffness and the equivalent beam width of the ring beam connector are examined, and the influence factors are investigated. It is found that the ring beam and the frame beam width have significant influence on the rotation stiffness and the equivalent width. Static and pseudo-dynamic tests on a two bay-two story STCC column-RC b