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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modal Damping and Seismic Performance of Damped Shear Wall Systems for Tall Buildings in High Seismic Zones
The damped shear wall system is a structural system for tall buildings wherein two rigid shear walls are connected by vertically acting dampers. This system was originally proposed as an alternative damper arrangement for the well-known damped outrigger system and contributes to increasing significantly the connection stiffness of the “corbel” outrigger. However, compared with a number of research about the damped outrigger system, the damping and seismic performance of the damped shear wall has not been investigated not all. Therefore, in this study, a series of complex modal analyses for the damped shear wall system with linear viscous dampers were performed to investigate the effect of the shear wall height of 200 to 400, the shear wall aspect ratio of 10 to 30, and the overall shear-to-bending deformation ratio of 0.3 to 1.0 on the exact modal damping and seismic performance. The uniform distribution along with the height and the centralized distribution in the specific stories were adopted as the damper arrangements. Furthermore, the simple design equation of optimal damper-to-shear-wall stiffness ratio to maximize the first mode damping ratio was proposed.
Modal Damping and Seismic Performance of Damped Shear Wall Systems for Tall Buildings in High Seismic Zones
The damped shear wall system is a structural system for tall buildings wherein two rigid shear walls are connected by vertically acting dampers. This system was originally proposed as an alternative damper arrangement for the well-known damped outrigger system and contributes to increasing significantly the connection stiffness of the “corbel” outrigger. However, compared with a number of research about the damped outrigger system, the damping and seismic performance of the damped shear wall has not been investigated not all. Therefore, in this study, a series of complex modal analyses for the damped shear wall system with linear viscous dampers were performed to investigate the effect of the shear wall height of 200 to 400, the shear wall aspect ratio of 10 to 30, and the overall shear-to-bending deformation ratio of 0.3 to 1.0 on the exact modal damping and seismic performance. The uniform distribution along with the height and the centralized distribution in the specific stories were adopted as the damper arrangements. Furthermore, the simple design equation of optimal damper-to-shear-wall stiffness ratio to maximize the first mode damping ratio was proposed.
Modal Damping and Seismic Performance of Damped Shear Wall Systems for Tall Buildings in High Seismic Zones
Lecture Notes in Civil Engineering
Mazzolani, Federico M. (Herausgeber:in) / Piluso, Vincenzo (Herausgeber:in) / Nastri, Elide (Herausgeber:in) / Formisano, Antonio (Herausgeber:in) / Terazawa, Yuki (Autor:in) / Takeuchi, Toru (Autor:in) / Tanaka, Mizuki (Autor:in)
International Conference on the Behaviour of Steel Structures in Seismic Areas ; 2024 ; Salerno, Italy
24.06.2024
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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