高烈度区新型钢筋砼框架的抗震性能

Aseismatic behavior of new RC frames for high seismic-intensity regions

研究高烈度区环境下带屈曲约束支撑钢筋混凝土框架的抗震性能,给出屈曲约束支撑在抗侧刚度不足的混凝土框架结构中的设计流程.结合工程算例,对原结构进行支撑的设计和布置,并对整体结构进行静力分析和动力时程分析.结果表明,屈曲约束支撑在增加结构刚度、减小层间位移以及抗震耗能等方面均具有良好的性能.

Aseismatic behavior of RC frames with buckling restraining braces was investigated for their application in the regions under high seismic intensity. The design flowchart of RC frames with buckling restraining braces was given to overcome the deficiency in their side stiffness. Taking an actual engineering project as example, the design and disposition of the braces were carried out for the original structure to be improved and the time history analysis of statics and dynamics of the overall structure was conducted. The result showed that this buckling restraining brace exhibited a good performance in connection with the improvement of the stiffness of the structure, decrease in interlayer displacement, and energy dissipation of earthquake.