Optimization of Tuned Liquid Damper Including Different Liquids for Lateral Displacement Control of Single and Multi-Story Structures

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Ocak A., Bekdas G., Nigdeli S. M., Kim S., Geem Z. W.

BUILDINGS, vol.12, no.3, 2022 (SCI-Expanded, SSCI, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 12 Issue: 3
  • Publication Date: 2022
  • Doi Number: 10.3390/buildings12030377
  • Journal Name: BUILDINGS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Social Sciences Citation Index (SSCI), Scopus, Aerospace Database, Applied Science & Technology Source, Avery, Communication Abstracts, INSPEC, Metadex, Directory of Open Access Journals, Civil Engineering Abstracts
  • Keywords: harmony search, adaptive harmony search, tuned liquid damper, structural control, optimization, SEISMIC RESPONSE CONTROL, MASS DAMPERS, HARMONY SEARCH, VIBRATION CONTROL, MITIGATION, PARAMETERS, EXCITATION, DESIGN, SYSTEM, TLD
  • Open Archive Collection: AVESIS Open Access Collection
  • Istanbul University-Cerrahpasa Affiliated: Yes

Abstract

This study focuses on tuned liquid dampers (TLDs) using liquids with different characteristics optimized with the adaptive harmony search algorithm (AHS). TLDs utilize the characteristic features of the liquid to absorb the dynamic forces entering the structure and benefit from the sloshing movement and the spring stiffness created by the liquid mass. TLDs have been optimized to investigate the effect of liquid characteristics on the control by analyzing various liquids. For optimization, the memory consideration ratio (HMCR) and fret width (FW) values were adapted from the classical harmony search (HS) algorithm parameters. The TLDs were used on three types of structure models, such as single-story, 10, and 40 stories. The contribution of the liquid characteristics to the damping performance was investigated by optimizing the minimum displacement under seismic excitation. According to the results, it was understood that the liquid density and kinematic viscosity do not affect single-story structures alone. However, two characteristic features should be evaluated together. As the structure mass increases, the viscosity and density become more prominent.