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考虑参数相关性,应用结构多尺度模型,对外加强环式钢管混凝土柱-钢梁节点进行了不确定性结构灵敏度分析,并进行多尺度半刚性组合平面框架体系模型在典型地震波下的弹塑性时程分析.分析表明,采用的多尺度界面连接方法,对于单一材料截面和组合材料截面是同样有效的;获得该组合节点转动的弯矩-转角曲线模型;在进行该组合框架体系地震时程分析时,框架顶层位移的平均相对偏差达到14.6%,,表明考虑节点半刚性是必要的.本文所提方法弥补了实体单元模型与杆系模型的不足,计算精确、有效,且可以关注局部区域.
Considering the parameter dependence, the multi-scale model of the structure is used to analyze the uncertainty structure of the externally-reinforced concrete filled steel tubular column-steel beam joint, and the elastic-plastic behavior of the multi-scale semi-rigid composite plane frame system under typical seismic waves The analysis shows that the multi-scale interface method is equally effective for the cross-section of single material and the cross-section of composite material. The moment-rotation curve model of the combined node rotation is obtained. After analyzing the seismic time history of the composite frame system, , The average relative displacement of the top of the frame reaches 14.6%, which shows that it is necessary to consider the semi-rigidity of the joints.The method proposed in this paper makes up for the shortcomings of the solid element model and the rod model, and the calculation is accurate and effective and can focus on the local area.