Performance Improvement of Semi-Rigid Moment Frames With Rim Dampers

• Main Authors: Yi-Yu Lin, 林宜豫
• Other Authors: 許協隆
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/a8s2gt

碩士 === 國立中央大學 === 土木工程學系 === 106 === A new type of passive damper, namely rim damper, consisting of aesthetics, economical and great energy dissipation capability was proposed to improve the performance of framed structures. Rim damper was made by two pieces of pipes and located in the middle of a brace which was connected to the semi-rigid frame, forming a braced frame. Rim damper has good ductility to dissipate the energy when an external load is applied to the structure. This damper exhibited yielding at an early stage of frame deformation. A series of cyclic loading tests on the rim damper and braced frames with the proposed dampers were conducted in this study. Two loading protocols were used in the frame tests to validate the effectiveness of the proposed method in seismic design. Test results showed that the strength, stiffness and energy dissipation of the framed structures were effectively improved. It is also validated from the tests that braced frame exhibited significant performance in deformation capacity when the rim damper was applied.