BİTİŞİK NİZAM YAPILARIN ÇARPIŞMASINI ÖNLEMEK İÇİN BİR HEDEF SÖNÜM ORANI VE RÖLATİF DEPLASMAN DÜŞÜNÜLEREK OPTİMUM SÖNÜMLEYİCİ YERLEŞİMİ

Year 2017, Volume: 6 Issue: 2, 581 - 592, 31.07.2017

Ersin Aydın , Baki Öztürk Muhammed Dikmen

https://doi.org/10.28948/ngumuh.341807

Cited By: 1

Abstract

   Bu çalışmada, bitişik nizam iki yapı arasına,
sönümleyiciler çarpışmayı önlemek için optimum olarak yerleştirilir. Optimizasyon
problemi için yönetici denklemler zaman tanım alanında türetilir. Hedef sönüm oranı
girişimli sistem için bulunur ve sayısal optimizasyon aşamasında aktif
kısıtlamalar kullanılır. Sönümleyicilerin sönüm katsayıları tasarım değişkeni olarak
seçilir ve sönüm katsayılarının toplamı kısıtlamalar altında minimize edilir.
Deprem yükleri altında aday optimum tasarımı test etmek için zaman tanım
alanında analizleri ve sayısal optimizasyonu içeren bir algoritma gösterilir.
Bütün katlarda rölatif deplasmanların hedef değerlerin altına düşüp düşmediği
kontrol edilir. Amaçlanan metodun geçerliliğini göstermek için 4 katlı bitişik
nizam kayma çerçeveleri sayısal örnek olarak kullanılır. Bitişik yapıların
arasına lineer viskoz sönümleyicilerin uygun yerleri ve sayıları hesaplanır ve
onların yapısal davranış üzerindeki etkileri araştırılır.   

Keywords

Çekiçleme, hedef sönüm oranı, ek sönümleyiciler, optimum pasif kontrol, çekiçlemenin önlenmesi

OPTIMAL DAMPER PLACEMENT TO PREVENT POUNDING OF ADJACENT STRUCTURES CONSIDERING A TARGET DAMPING RATIO AND RELATIVE DISPLACEMENT

Abstract

   In this study, viscous dampers are optimally
placed between two adjacent structures with the aim of preventing pounding. Governing
equations are derived in time domain for the optimization problem. Target
damping ratios are obtained for the coupled system and used as active
constraints in the numerical optimization stage. The damping coefficients of
the dampers are chosen as design variables, and the sum of the damping
coefficients is minimized under the constraints. An algorithm featuring
numerical optimization and time history analysis is put forward to test the
candidate optimal design under the earthquake loads of interest. The relative
displacements are checked at all storey levels to ensure that they remain below
the target values. Two 4-storey adjacent shear-building models are used in
numerical examples to validate the proposed method. The appropriate number and
locations of linear viscous dampers between adjacent structures are determined,
and their effects on structural behaviour are evaluated.

Keywords

Pounding, target damping ratio, added dampers, optimal passive control

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