Study on Optimal Design of Grotto-Eave System with Cable Inerter Viscous Damper for Vibration Control

Buildings

Jizhong Huang¹  Ruoyu Zhang¹  Xiuwei Guo¹  Meigen Cao²  Qingyang Luo³ 

[1] Institute for Conservation of Cultural Heritage, Shanghai University, Shanghai 200444, China;School of Civil Engineering, North China University of Technology, Beijing 100144, China;School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;

关键词: grotto–eave system;    inerter element;    stochastic response;    demand-based optimal method;    dynamic response;   

DOI  :  10.3390/buildings12050661

来源: DOAJ

【 摘 要 】

In this paper, the mechanical model of grotto–eave system with cable inerter viscous damper (CIVD) is established, and the vibration control equations are established. Firstly, the stochastic response is carried out, and the optimization design of design parameters of CIVD is carried out for the grotto–eave systems with different connection types. Finally, the vibration mitigation control performance of CIVD under different seismic inputs is analyzed. The research shows that in the optimal design of CIVD, the inerter–mass ratio and damping ratio should be reduced as much as possible to improve the feasibility of the application of CIVD in cultural relics protection engineering under the condition of meeting the target damping ratio. The demand-based optimal method can minimize the cost by enhancing damping element deformation in a small damping ratio, while ensuring that the value of displacement index of grotto–eave system can be reached. Hence, the deformation and damping force of CIVD will increase simultaneously due to the efficient tuning and damping amplification of CIVD. CIVD can enlarge the apparent mass through rotation and damping force through enhancement deformation. Hence, compared with other conventional dampers (such as viscous damper), optimal CIVD has lower damping ratio under the same demand index of grotto–eave system. It can be realized that the lightweight and high efficiency of the damper, and can be applied to the vibration mitigation and reinforcement of the grotto–eave system.

【 授权许可】

Unknown