摘要
以基本周期、首层剪重比为主要控制参数,建立3个不同强度和刚度的多层规则钢框架单体模型,并于中部采用不同形式的连接以形成连体模型,在弹塑性时程分析下,研究模型的动力响应机理。结果表明:各模型的层反应、连体模型的强侧刚度与强度足够大时,不同形式中部连接对强侧均有连接效果,而弱侧的连接效果不明显,而连体模型强侧相对弱时,连接构件对连体模型无明显的连接效果;各连体模型整体强度越高,塑性变形能量总和越小,同模型不同连接形式时的塑性变形能量总和依次为:梁式连接>梁+楼板式连接>层式连接;连接构件的动力响应,梁式连接的连接构件有较大的轴力,而梁+楼板式连接构件的轴力接近于零。
Three regular monomer-structural models with different strength and stiffness for the regular connected structural multi-story steel frame with different middle connections were built based on the fundamental period and shearweight ratio parameters. And the dynamic response mechanism studies were conducted through the nonlinear time history analysis method. The research results showed that the connection effects of story-drift were obvious to the strong side relative to the weak side of the connected structure when the stiffness and strength were large enough; otherwise,the connection effects were not obvious when the strong part side was only a little stronger relative to another part. Plastic deformation energy decreased with the increasing of connected structural overall strength; and the amount of the energy decreased from beam connection style to beam-slab connection style,then layer connection style. The dynamic response of the connecting member showed that the axial force was strong in the beam connection style,and almost zero with the beamslab connection style.
出处
《钢结构》
北大核心
2017年第3期1-6,共6页
Steel Construction
基金
国家自然科学基金资助项目(51409051)
广西矿冶与环境科学实验中心重点项目(KH2013ZD005)
关键词
连体结构
不同连接形式
塑性变形能量
连接构件反应
connected structure
different connection styles
plastic deformation energy
response of the connecting member
