自复位黏滞阻尼器的构造设计与抗震韧性提升  

Development of self-centering viscous damper and seismic resilience enhancement

作　　者：王伟[1,2] 李俊霖[1,2] 曹纵 WANG Wei;LI Junlin;CAO Zong(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;Department of Structural Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092 [2]同济大学建筑工程系,上海200092

出　　处：《建筑结构学报》2023年第3期59-69,共11页Journal of Building Structures

基　　金：十四五国家重点研发计划项目(2022YFC3801904);国家自然科学基金重点国际合作项目(51820105013),国家自然科学基金面上项目(52078366)。

摘　　要：为提高建筑结构抗震韧性,提出了一种将环簧阻尼器和黏滞阻尼器并联的自复位黏滞阻尼器构造,分析其工作原理,在元件和构件层次分别进行了静力和动力试验研究。试验结果表明:自复位黏滞阻尼器构造合理,在不同振动频率下表现出良好的自复位能力与无损伤耗能能力。采用基于性能的塑性设计方法,设计了屈曲约束支撑钢框架、自复位环簧支撑钢框架和自复位黏滞阻尼支撑钢框架,对比分析不同结构体系的地震响应。分析结果表明:基于性能的塑性设计方法可以实现自复位黏滞阻尼支撑钢框架的性能目标;在一致的性能目标下,自复位黏滞阻尼支撑钢框架相比自复位环簧支撑钢框架具有更低的承载力需求,降低了结构用钢量,同时降低了楼层加速度响应,减少非结构构件损失;相比屈曲约束支撑钢框架,具有与之相当的消能减震效果,同时能够有效地控制结构残余变形,进而提高结构的抗震韧性。To improve the seismic resilience of building structures, this paper proposed a construction scheme for a self-centering viscous damper. This damper employs a ring spring damper with a viscous damper in parallel. The working principle was first analyzed. This was followed by serial static and dynamic experiments on element and damper level. The experimental results show that the proposed construction is feasible. It has good self-centering ability and non-destructive energy consumption ability under different vibration frequencies. Based on the performance-based plastic design method(PBPD), three different building frames were designed, including buckling restrained braced steel frame(BRBSF), self-centering ring spring braced steel frame(RSBSF) and self-centering viscous damping braced steel frame(SCVBSF), and the seismic responses of different structural systems were compared. The results show that PBPD can be successfully applied in SCVBSF design. SCVBF possesses much lower strength demand compared with RSBSF designed with the same objectives. The steel consumption can be well saved. The floor acceleration responses can be significantly reduced, leading to a reduction of non-structural loss. Compared with BRBSF, SCVBSF possesses similar level of energy dissipation capacity, and can effectively control the residual deformation of the structure, to improve the seismic resilience of the structures.

关 键 词：自复位阻尼器 黏滞阻尼 环形弹簧 试验研究 基于性能的设计方法 抗震韧性 

分 类 号：TU352.1[建筑科学—结构工程]