| Title |
Seismic Performance of Lead-Rubber-Dampers Attached on Building Exterior |
| Authors |
Jeon, Seong-Ha ; ParkJi-Hun |
| Keywords |
Lead Rubber Damper ; Seismic Retrofit ; Masonry-infilled Frame |
| Abstract |
New detail of lead rubber bearing installed between an existing building structure and an added steel frame for seismic retrofit is proposed and verified. Dependency of the damper's characteristics on deformation amplitude and frequency is evaluated through cyclic loading tests. The elastic stiffness, yield displacement and post-yield stiffness ratio of the bi-linear model based on experimental force-displacement relationship have considerable dependency on amplitude and frequency. Bi-linear models of the test specimen is applied to the numerical analysis of an existing masonry-infilled RC frame. Proposed installation scheme of lead rubber bearing mitigates displacement response of the RC frame effectively below collapse margins determined from a nonlinear pushover analysis, and shows slightly dependency of the seismic performance on the idealized model characteristics. |