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介绍了屈曲约束支撑(BRB)+黏滞阻尼器(VD)结构体系的减震原理,研究了体系的周期合理限值、体系的层间位移角限值,并提出BRB的逐步布置方法。以一实际工程为例,阐述了BRB+VD体系的实现过程,对比了BRB+VD,BRB,VD三种结构体系的减震效果,验证了BRB+VD结构体系的优越性。结果表明,提出的逐步布置方法能有效布置BRB,布置屈曲约束支撑和黏滞阻尼器的BRB+VD结构体系能明显提高结构的抗震性能,是高烈度地区复杂框架的合理消能体系。
The shock absorption principle of the buckling restrained bracing (BRB) + viscous damper (VD) structure system is introduced. The reasonable period limit of the system and the inter-story drift angle limit of the system are studied. The BRB gradual arrangement method is proposed. Taking an actual project as an example, the realization process of BRB+VD system is described. The shock absorption effects of BRB+VD, BRB, and VD are compared and the superiority of BRB+VD structural system is verified. The results show that the proposed step-by-step arrangement method can effectively arrange BRB, and the BRB+VD structural system with buckling restraint support and viscous damper can significantly improve the seismic performance of the structure, and it is a reasonable energy dissipation system for complex frameworks in high-intensity regions.