EFFECT OF DIFFERENT VERTICAL STRUCTURAL IRREGULARITIES ON NONLINEAR RESPONSE OF REINFORCED CONCRETE BUILDINGS

Rebaz Karim; Esra Mete Güneyisi

doi:10.17780/ksujes.1645544

EN TR

EFFECT OF DIFFERENT VERTICAL STRUCTURAL IRREGULARITIES ON NONLINEAR RESPONSE OF REINFORCED CONCRETE BUILDINGS

Abstract

To achieve either some architectural view or functional utilization, many structures have been designed with some irregularity in plan or elevation. However, during the recent earthquakes, it has been noted that the presence of such irregularities can lead to structural damage in a single member or even the collapse of an entire building. In the current study, the seismic behavior of vertically irregular low-rise and medium-rise buildings was examined in comparison with the regular ones. As low- and medium-rise buildings, those with three and seven stories, respectively, and as types of vertical irregularities, stiffness/strength irregularity (missing beams or columns), mass irregularity, and vertical geometric irregularity due to setbacks were considered. For this purpose, analytical models of the two reference regular framed structures and thirty different irregular framed structures were developed, and their seismic behavior was evaluated using nonlinear finite element analysis. The effects of different irregularities on the seismic demand were discussed in terms of the variations in capacity curves, plastic hinge formations, and axial internal forces obtained in the columns. The results of the analysis indicate that, depending on the type of irregularity, buildings with irregularities, especially those with missing columns, become more vulnerable to seismic impacts.

Keywords

FARKLI DÜŞEY DOĞRULTUDAKİ YAPISAL DÜZENSİZLİKLERİN BETONARME BİNALARIN DOĞRUSAL OLMAYAN DAVRANIŞINA ETKİSİ

Öz

Mimari görünüm veya işlevsel kullanım sebebiyle pek çok yapı yatayda ve düşeyde düzensizliklere sahip olarak tasarlanmaktadır. Ancak, son dönemde yaşanan depremler, yapılarda bu tür düzensizliklerin olması durumunda yapısal elemanlarda hasar oluşabileceği, hatta binada çökme meydana gelebileceğini göstermiştir. Bu çalışmada düşeyde düzensiz olan az ve orta katlı binaların sismik davranışları düşeyde düzenli binalarla karşılaştırmalı olarak incelenmiştir. Az ve orta katlı binalar olarak üç ve yedi katlı binalar düşünülmüştür. Düşey düzensizlikler olarak da kiriş veya kolon eksikliğinden kaynaklı düşeyde rijitlik ve dayanım düzensizliği, kütle düzensizliği ve düşeyde geometrik düzensizliği dikkate alınmıştır. Bu sebeple, referans olarak iki düzenli çerçeveli yapının ve otuz farklı düzensiz çerçeveli yapının analitik modelleri geliştirilmiş ve doğrusal olmayan sonlu elemanlar analizi kullanılarak sismik davranışları değerlendirilmiştir. Farklı düzensizliklerin sismik talep üzerindeki etkileri, kapasite eğrilerindeki değişimler, plastik mafsal oluşumları ve kolonlarda elde edilen eksenel iç kuvvetler açısından tartışılmıştır. Analiz sonuçları, düzensizlik türüne bağlı olarak, özellikle de kolonları düzensiz olan binaların sismik etkiler karşısında daha riskli hale geldiğini göstermektedir.

Anahtar Kelimeler

References

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TBDY 2018. Türkiye Bina Deprem Yönetmeliği. Afet ve Acil Durum Yönetimi Başkanlığı, Ankara.

Details

Primary Language

English

Subjects

Numerical Modelization in Civil Engineering

Journal Section

Research Article

Authors

Rebaz Karim
0009-0009-2108-370X
Türkiye

Esra Mete Güneyisi ^*
0000-0002-4598-5582
Türkiye

Publication Date

June 3, 2025

Submission Date

February 23, 2025

Acceptance Date

May 7, 2025

Published in Issue

Year 2025 Volume: 28 Number: 2

DOI

https://doi.org/10.17780/ksujes.1645544

IZ

https://izlik.org/JA27ND85TE

Cite

RIS / Bibtex

APA

Karim, R., & Güneyisi, E. M. (2025). EFFECT OF DIFFERENT VERTICAL STRUCTURAL IRREGULARITIES ON NONLINEAR RESPONSE OF REINFORCED CONCRETE BUILDINGS. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi, 28(2), 957-974. https://doi.org/10.17780/ksujes.1645544