扬州中学实验楼结构消能减震性能分析
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（北京市建筑设计研究院有限公司， 北京 100045）［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。［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; 弹塑性动力分析中图分类号：TU352.1 文献标识码：A 文章编号：1002-848X(2014)20-0054-06Energy dissipation performance analysis of Yangzhou High School laboratory building structureYang Yong, Wang Ran,Xu Fugui, Tang Shaoxue, Shao Zehui( Beijing Institute of Architectural Design, Beijing 100045, China)Abstract: 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.Keywords: buckling restrained brace; steel core with low yield strength; concrete frame structure; elastic-plastic dynamic analysis作者简介：杨勇，硕士，高级工程师，一级注册结构工程师，Email:yynjtu@sohu.com。参考文献［1］PAULAY THOMAS, PRIESTLEY M J N. Seismic design of reinforced concrete and masonry buildings［M］. New York: Wiley-Interscience, 1992.［2］韩小雷，陈学伟.基于纤维模型的超高层钢筋混凝土结构弹塑性时程分析［J］.建筑结构，2010,40（2）:13-16.［3］ATC 40 Seismic evaluation and retrofit of concrete buildings：volume 1［S］. 1996.［4］FEMA 356 Prestandard and commentary for the seismic rehabilitation of buildings［S］. Washington, D. C., 2000.［5］孙逊，方立新.人民日报社报刊综合业务楼动力弹塑性时程分析［J］.建筑结构，2012,42（9）:56-60.［6］ASCE/SEC 41-06 Seismic rehabilitation of existing building［Ｓ］．Reston: American Society of Civil Engineers, 2007.
