Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
KDamper Concept for Base Isolation and Damping of High-Rise Building Structures
https://orcid.org/http://orcid.org/0000-0002-6619-7374
Throughout the past decades, seismic isolation of structures has attracted the attention of civil engineers and scientists. Research around this field has progressed tremendously, starting from the use of simple elastomeric bearings for the decoupling of the superstructure from the foundation and moving toward the invention of more complex devices (characteristic examples being the Tuned Mass Dampers—TMDs or the Quasi-Zero Stiffness oscillators—QZSs) aiming to enhance structural dynamic behavior. In this context, the implementation of novel passive seismic isolation devices incorporating negative stiffness elements to a high-rise building structure is introduced and proposed in this effort. The design of these devices follows the scope of general vibration isolation and damping concept, entitled KDamper concept based on Antoniadis et al. (2016). This paper considers the application of a KDamper system to 10-storey concrete building structure. A dynamic system consisting of a simplified flexible structure model and KDamper devices is considered and is subjected to artificial accelerograms designed to match the EC response spectra. The KDamper is designed to higher frequencies compared to the isolated system with seismic isolation bearings, exploiting the extraordinary damping properties it offers. A comparison with a base isolated structure using Lead Rubber Bearings designed to greatly increase the natural period of the system (2.0–2.5 s), confirms that KDamper base seismic absorption designs can provide great reduction to the inter-story drifts and absolute accelerations reducing at the same time the base displacement.
KDamper Concept for Base Isolation and Damping of High-Rise Building Structures
https://orcid.org/http://orcid.org/0000-0002-6619-7374
Throughout the past decades, seismic isolation of structures has attracted the attention of civil engineers and scientists. Research around this field has progressed tremendously, starting from the use of simple elastomeric bearings for the decoupling of the superstructure from the foundation and moving toward the invention of more complex devices (characteristic examples being the Tuned Mass Dampers—TMDs or the Quasi-Zero Stiffness oscillators—QZSs) aiming to enhance structural dynamic behavior. In this context, the implementation of novel passive seismic isolation devices incorporating negative stiffness elements to a high-rise building structure is introduced and proposed in this effort. The design of these devices follows the scope of general vibration isolation and damping concept, entitled KDamper concept based on Antoniadis et al. (2016). This paper considers the application of a KDamper system to 10-storey concrete building structure. A dynamic system consisting of a simplified flexible structure model and KDamper devices is considered and is subjected to artificial accelerograms designed to match the EC response spectra. The KDamper is designed to higher frequencies compared to the isolated system with seismic isolation bearings, exploiting the extraordinary damping properties it offers. A comparison with a base isolated structure using Lead Rubber Bearings designed to greatly increase the natural period of the system (2.0–2.5 s), confirms that KDamper base seismic absorption designs can provide great reduction to the inter-story drifts and absolute accelerations reducing at the same time the base displacement.
KDamper Concept for Base Isolation and Damping of High-Rise Building Structures
https://orcid.org/http://orcid.org/0000-0002-6619-7374
Throughout the past decades, seismic isolation of structures has attracted the attention of civil engineers and scientists. Research around this field has progressed tremendously, starting from the use of simple elastomeric bearings for the decoupling of the superstructure from the foundation and moving toward the invention of more complex devices (characteristic examples being the Tuned Mass Dampers—TMDs or the Quasi-Zero Stiffness oscillators—QZSs) aiming to enhance structural dynamic behavior. In this context, the implementation of novel passive seismic isolation devices incorporating negative stiffness elements to a high-rise building structure is introduced and proposed in this effort. The design of these devices follows the scope of general vibration isolation and damping concept, entitled KDamper concept based on Antoniadis et al. (2016). This paper considers the application of a KDamper system to 10-storey concrete building structure. A dynamic system consisting of a simplified flexible structure model and KDamper devices is considered and is subjected to artificial accelerograms designed to match the EC response spectra. The KDamper is designed to higher frequencies compared to the isolated system with seismic isolation bearings, exploiting the extraordinary damping properties it offers. A comparison with a base isolated structure using Lead Rubber Bearings designed to greatly increase the natural period of the system (2.0–2.5 s), confirms that KDamper base seismic absorption designs can provide great reduction to the inter-story drifts and absolute accelerations reducing at the same time the base displacement.
KDamper Concept for Base Isolation and Damping of High-Rise Building Structures
Lect.Notes Mechanical Engineering
Sapountzakis, Evangelos J. (Herausgeber:in) / Banerjee, Muralimohan (Herausgeber:in) / Biswas, Paritosh (Herausgeber:in) / Inan, Esin (Herausgeber:in) / Kapasakalis, Konstantinos A. (Autor:in) / Antoniadis, Ioannis A. (Autor:in) / Sapountzakis, Evangelos J. (Autor:in)
International Conference on Vibration Problems ; 2019 ; Crete, Greece
Proceedings of the 14th International Conference on Vibration Problems ; Kapitel: 16 ; 265-289
24.12.2020
25 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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