摘要
扬州中学实验楼作为重点设防类建筑,采用屈曲约束支撑-混凝土框架结构体系,共使用了78套由低屈服强度软钢钢芯制作而成的屈曲约束支撑。采用PERFORM 3D程序对实验楼在罕遇地震作用下进行的弹塑性动力分析的结果表明,屈曲约束支撑的地震耗能占总结构耗能的比例最高达到40%,框架部分承担的地震剪力有效减小,混凝土框架结构进入塑性损伤比例有效减小,说明屈曲约束支撑的消能减震作用有效地保护了主体结构。
Yangzhou High School laboratory building is an important fortification building. The buckling restrained braced concrete frame structural system was adopted with a total of 78 sets of buckling restrained braces made of low yield strength steel cores. PERFORM 3D program was used for dynamic elastic-plastic dynamic analysis of the building under the rare earthquake. The results show that seismic energy dissipation of buckling restrained braces accounts for up to 40% of the whole energy consumption of the structure. The seismic shear capacity of the frame part effectively reduces and the plastic damage ratio of concrete frame structure effectively reduces,which illustrates that the energy dissipation effect of buckling restrained braces effectively protects the main structure.
出处
《建筑结构》
CSCD
北大核心
2014年第20期54-59,共6页
Building Structure
关键词
屈曲约束支撑
低屈服强度软钢钢芯
混凝土框架结构
弹塑性动力分析
buckling restrained brace
steel core with low yield strength
concrete frame structure
elastic-plastic dynamic analysis
