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

Year 2024, Volume: 30 Issue: 5, 650 - 659, 30.10.2024

Esra Özer

Abstract

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 spectrumcompatible 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 FVE DİĞ.
The best seismic performance was obtained using nonlinear fluid
viscous damper (NFVD).

Keywords

Fluid viscous damper-FVD, Torsion irregularity, Time-History analysis

Akışkan viskoz sönümleyicilerin bir konut binasının performansı üzerindeki etkileri

Abstract

Bu çalışmada, burulma düzensizliğine sahip orta yükseklikteki
geleneksel betonarme bir binada, doğrusal ve doğrusal olmayan
akışkan viskoz sönümleyiciler (FVD) kullanılarak sismik performansın
değişimi incelenmiştir. Analizlerde kullanılan betonarme bina
modelleri üç boyutlu(3B) ve beş katlı olarak tasarlanmıştır. Modellerin
yapısal elemanlarında doğrusal elastik olmayan davranış dikkate
alınmıştır. Spektrum uyumlu 11 adet gerçek ivme kayıt takımı
kullanılarak toplam 66 adet çift yönlü doğrusal olmayan zaman tanım
alanında dinamik analiz yapılmıştır. Akışkan viskoz sönümleyicilerin
doğrusal ve doğrusal olmayan sismik davranışları, ankastre mesnetli
model ile karşılaştırılmıştır. Bu karşılaştırmalar, tepe yer değiştirme
oranları, katlar arası göreli öteleme oranları, burulma düzensizlik
katsayısı ve mutlak ivme parametreleri kullanılarak
gerçekleştirilmiştir. Bina yüksekliği boyunca çapraz olarak uygulanan
FVD sönümleyiciler, ankastre mesnetli modele göre sismik talepleri
ciddi oranda azaltmıştır. Ayrıca, yapısal eksantrisiteden kaynaklanan
burulma düzensizliği FVD kullanımı ile ihmal edilebilecek düzeye
indirgenmiştir. En iyi sismik performans doğrusal elastik olmayan
akışkan viskoz sönümleyicinin (NFVD) kullanıldığı modelde elde
edilmiştir.

Keywords

Akışkan viskoz sönümleyici-FVD, Burulma düzensizliği, Zaman tanım alanında analiz

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