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为解决高烈度地震区框架结构抗侧刚度小、冗余度较低的问题,提出对框架结构增设黏滞阻尼墙与防屈曲支撑(BRB)的方法来提高其抗震性能。阐述了黏滞阻尼墙和BRB的工作机理,并结合工程实例分别对框架结构进行四种工况下(纯框架结构、带黏滞阻尼墙的框架结构、带BRB的框架结构、带黏滞阻尼墙和BRB的框架结构)的小震、中震和大震抗震性能研究。结果表明,在小震和中震作用下黏滞阻尼墙和BRB既能提高框架结构的抗侧刚度,又能更好地耗散能量,框架结构抗震性能较好,两者能够有机地结合起来;在大震作用下,黏滞阻尼墙和BRB滞回曲线饱满,耗能效果明显,是一种值得推广的方式。
In order to solve the problem of low lateral stiffness and low redundancy of frame structure in high seismicity area, a method of adding viscous damping wall and anti-buckling brace (BRB) to the frame structure is proposed to improve its seismic performance. The working mechanism of viscous damping wall and BRB is expounded. Combined with engineering examples, the frame structure under four conditions (pure frame structure, frame structure with viscous damping wall, frame structure with BRB, viscous damping Wall and BRB frame structure) of small earthquakes, earthquakes and large earthquake seismic performance. The results show that the viscous damping wall and BRB can enhance the lateral stiffness of the frame structure and dissipate the energy better, and the seismic performance of the frame structure is better, and the two can be combined organically ; Under the action of large earthquake, the viscous damping wall and the BRB hysteresis curve is full, and the energy dissipation effect is obvious, which is a way worth promoting.