【作者】 潘梦阳； 周奎； 林杰；

【Author】 PAN Meng-yang;ZHOU Kui;LIN Jie;School of Environment and Architecture, University of Shanghai for Science & Technology;

【机构】 上海理工大学环境与建筑工程学院；

【摘要】 该文在已有试验研究的基础上,采用平面非线性软件IDARC 2D建立数值模型,对一榀配置核心钢管的混凝土柱和钢骨混凝土梁新型组合框架进行滞回分析,并与试验结果对比。同时,对此框架的套建增层改造实例进行地震反应时程分析。研究结果表明:IDARC 2D能较好地模拟组合框架在低周往复荷载作用下的受力过程,为此类框架滞回性能的模拟提供了合适的方法;此新型框架具有梁铰耗能,延缓柱底出铰的特点,抗倒塌能力较强。更多还原

【Abstract】 In this study, a theoretical research on hysteretic behavior of a new composite frame composed of RC column encased steel-tube and steel reinforced concrete beam was proposed by using the plane nonlinear software-IDARC2 D. The theoretical analysis results were compared with experiments. In addition, seismic response regarding to an outer-jacketing reconstruction example of composite frame was analyzed by the way of time-history analysis. The research results showed that IDARC 2D could preferably simulate the entire loading process on the composite frame, and provide a suitable analytical method for hysteretic behavior. The emergence sequence of plastic hinges on this fame is ‘beam ends before and column bottoms after’, so that the anti-collapse ability of the structure was largely enhanced.更多还原