Tuned vibration absorbers for control of tall buildings under wind and earthquake loads

S. Elias, R. Rupakhety, S. Olafsson

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Abstract

This study presents an application of tuned vibration absorbers (TVAs) to reduce dynamic response of tall buildings under multiple excitations such as wind and earthquake ground motion. A finite element model of a typical tall building is prepared with rotational degrees of freedom reduced by static condensation. Mechanical models of TVAs are incorporated in the model. The coupled equations of motion are formulated and solved using numerical methods. The uncontrolled building (NC) and the controlled building are subjected to a number of near fault earthquake ground motions and wind forces (mass excitations). The effectiveness of using multiple TVAs as opposed to a single TVA (STVA) is investigated. The design parameters affecting the effectiveness of the TVA arrangements are chosen to investigate optimal setups. It is observed that STVA are more effective for wind response mitigation than seismic response mitigation of tall buildings. Multiple TVAs are, however, found to be effective for controlling both wind and earthquake induced vibrations. It is concluded that optimally designed TVAs are effective in controlling vibration of buildings subjected to action of wind and earthquake loads.

Original languageEnglish
Title of host publicationCOMPDYN 2019 - 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Proceedings
EditorsManolis Papadrakakis, Michalis Fragiadakis
PublisherECCOMAS
Pages5212-5222
Number of pages11
ISBN (Electronic)9786188284456
DOIs
Publication statusPublished - 2019
Externally publishedYes
Event7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2019 - Creta Maris Conference Centre, Crete, Greece
Duration: 24 Jun 201926 Jun 2019
Conference number: 7

Publication series

NameCOMPDYN Proceedings
PublisherECCOMAS
Volume3
ISSN (Print)2623-3347

Conference

Conference7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2019
Abbreviated titleCOMPDYN 2019
Country/TerritoryGreece
CityCrete
Period24/06/1926/06/19

Keywords

  • Buildings
  • Earthquake
  • Multi-hazard
  • Tuned Vibration Absorbers (TVAs)
  • Wind loads

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