新型SRC框架-支撑结构体系抗震性能研究

Study of seismic performance of a new SRC frame-brace structure system

文章采用振型分解反应谱理论和弹性动力时程分析法,利用SAP2000对新型SRC框架-支撑结构体系进行数值模拟分析与研究。研究分析发现,结构体系的抗震受力性能与框架-剪力墙结构体系相似,竖向受力单元系统中框架柱截面比预估截面还可以减小23.5%,而对于抗震单元系统则需在截面和层高突变的位置进行加强。研究结果表明,新型SRC框架-支撑结构体系各项抗震性能指标满足我国的现行建筑抗震设计规范与高层建筑混凝土结构技术规程中规定要求,且抗震性能好,其经济效益也得到提高。

Based on the mode-superposition response spectrum method and the elastic time history anal- ysis, a new steel reinforced concrete（SkC） frame-brace structure system was simulated and analyzed by using SAP2000. The results show that the seismic behavior of the structure system is similar to that of the frame-shear wall structure system. tern can be reduced by 23.5 G compared to the The frame column section of the vertical load unit sys- assumed section. For the seismic unit system, the sec- tion and story height mutation positions should be reinforced. It is shown that the seismic perform- ance index of the new SRC frame-brace structure meets the requirements of the Code for Seismic De- sign of Buildings and Technical Specification for Concrete Structures of Tall Building in China. The structure system has good seismic performance and promotes the economic benefits.