Pamukkale Univ Muh Bilim Derg. Ahead of Print: PAJES-39345 | DOI: 10.5505/pajes.2023.39345

The effect of fluid viscous dampers on performance of a residential building

esra özer
Department of Civil Engineering, Gaziosmanpasa University, Tokat, Turkey

In this study, the change of seismic performance was investigated by using linear and nonlinear fluid viscous dampers (FVD) in a mid-rise conventional reinforced concrete (RC) building with torsional irregularity. Analysis models were designed as three-dimensional (3D) and 5-story. In the structural elements of the models, nonlinear behavior was taken into account. A total of 66 bi-directional nonlinear time history dynamic analyzes were performed using 11 spectrum-compatible real earthquake record sets. Linear and nonlinear seismic behavior of fluid viscous dampers were compared with the fixed-base model. These comparisons were made using roof drift ratios, interstory drift ratio, torsion irregularity coefficient and absolute acceleration parameters. The FVD dampers applied diagonally through the height of the building significantly reduced seismic demands compared to the fixed-base model. In addition, the torsional irregularity caused by structural eccentricity was reduced to negligible level by using FVD. The best seismic performance was obtained using nonlinear fluid viscous damper (NFVD).

Keywords: Fluid Viscous Damper-FVD, Torsion Irregularity, Time-History Analysis

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Akýþkan viskoz sönümleyicilerin bir konut binasýnýn performansý üzerindeki etkileri

esra özer
Tokat Gaziosmanpaþa Üniversitesi Mühendislik Ve Mimarlýk Fakültesi, Yapý Ana Bilim Dalý, Tokat

Bu çalýþmada, burulma düzensizliðine sahip orta yükseklikteki geleneksel betonarme bir binada, doðrusal ve doðrusal olmayan akýþkan viskoz sönümleyiciler (FVD) kullanýlarak sismik performansýn deðiþimi incelenmiþtir. Analizlerde kullanýlan betonarme bina modelleri üç boyutlu(3B) ve beþ katlý olarak tasarlanmýþtýr. Modellerin yapýsal elemanlarýnda doðrusal elastik olmayan davranýþ dikkate alýnmýþtýr. Spektrum uyumlu 11 adet gerçek ivme kayýt takýmý kullanýlarak toplam 66 adet çift yönlü doðrusal olmayan zaman taným alanýnda dinamik analiz yapýlmýþtýr. Akýþkan viskoz sönümleyicilerin doðrusal ve doðrusal olmayan sismik davranýþlarý, ankastre mesnetli model ile karþýlaþtýrýlmýþtýr. Bu karþýlaþtýrmalar, tepe yer deðiþtirme oranlarý, katlar arasý göreli öteleme oranlarý, burulma düzensizlik katsayýsý ve mutlak ivme parametreleri kullanýlarak gerçekleþtirilmiþtir. Bina yüksekliði boyunca çapraz olarak uygulanan FVD sönümleyiciler, ankastre mesnetli modele göre sismik talepleri ciddi oranda azaltmýþtýr. Ayrýca, yapýsal eksantrisiteden kaynaklanan burulma düzensizliði FVD kullanýmý ile ihmal edilebilecek düzeye indirgenmiþtir. En iyi sismik performans doðrusal elastik olmayan akýþkan viskoz sönümleyicinin (NFVD) kullanýldýðý modelde elde edilmiþtir.

Anahtar Kelimeler: Akýþkan Viskoz Sönümleyici-FVD, Burulma Düzensizliði, Zaman Taným Alanýnda Analiz

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