框架—带防屈曲支撑钢连梁核心筒结构耗能能力分析

为分析带防屈曲支撑钢连梁新型结构体系耗能能力,以某框架—核心筒结构为例,其筒体部分剪力墙分别采用全楼层均为钢筋混凝土连梁和局部层间位移较大楼层采用带防屈曲支撑钢连梁而其余楼层为钢筋混凝土连梁的两种方案,采用能量分析方法,分析了两种方案在罕遇地震作用下的耗能能力。通过对比两种方案的能量时程曲线可知,带防屈曲支撑钢连梁结构体系能有效降低结构构件的塑性发展,减轻结构的破坏,保护主体结构的安全。带防屈曲支撑钢连梁结构体系具有良好的耗能能力。

The Analysis of Energy Dissipation Capacity of Core Tube Structurein Steel Coupled-beam Frame and Buckling Support

In order to analyze the energy dissipation capacity of the new type structural steel coupled-beam with buckling support,this paper takes a frame-core tube structure as an example to analyze the energy dissipation capacity in the case of rare earthquakes under the two schemes by using the energy analysis method.The tube part of shear wall is respectively made of reinforced concrete coupling beam in whole building,the steel coupled-beam with buckling support in local floors with larger displacement and the reinforced concrete coupling beam in the rest floors.With the comparison of the energy dissipation time-history curves of two schemes,the results show that the steel coupled-beam structure with buckling support can effectively reduce the plastic development of structural members,reduce structural damage,and protect the safety of the main structure.The steel coupled-beam structural system with buckling support has good energy dissipation capacity.