Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient

Ertuğrul Türker UZUN, (İzmir Yüksek Teknoloji Enstitüsü, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümü, İzmir, Türkiye)
Mutlu SEÇER (İZMİR KATİP ÇELEBİ ÜNİVERSİTESİ/MÜHENDİSLİK VE MİMARLIK FAKÜLTESİ/İNŞAAT MÜHENDİSLİĞİ BÖLÜMÜ)
Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi
5 0
Yıl: 2019 Cilt: 25 Sayı: 6 Sayfa Aralığı: 635 - 642 Metin Dili: İngilizce DOI: 10.5505/pajes.2018.46656 İndeks Tarihi: 01-07-2020

Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient

Öz:
Due to technical developments and wider range of applications in thesteel structures, significance of the research on structural stabilityproblems become forward. Lateral torsional buckling is a majorproblem especially for doubly symmetric I-shaped steel memberssubjected to flexure about their strong axis. If these members are notappropriately braced against lateral deflection and twisting, they areunder the risk of failure by lateral torsional buckling prior to the reachtheir load carrying capacity. In this study, elastic lateral torsionalbuckling behavior of doubly symmetric I-shaped steel members underlinear moment gradient is investigated considering a proposed method,several design standards and codes, approaches from the literature andfinite element analysis. Proposed method herein is based on finitedifference solution of lateral torsional buckling differential equationconsidering linear moment gradient. Different unbraced memberlengths and various end moment values are considered in order tocompare and evaluate these approaches in terms of critical moment andmoment modification factor. Analysis results show that lateraltorsional buckling is a key issue for doubly symmetric I-shaped steelmembers that are under flexure and it is reflected satisfactorily with theproposed method considering the design codes and standards,approaches from the literature and finite element analysis results.
Anahtar Kelime:

Çift simetri eksenli I-enkesitli çelik elemanların doğrusal değişen momentler altındaki yanal burulmalı burkulma davranışı

Öz:
Çelik yapılardaki teknik gelişmeler ve daha geniş uygulama alanları nedeniyle yapısal stabilite problemleri üzerine yapılan araştırmaların önemi artmaktadır. Yanal burulmalı burkulma, özellikle kuvvetli eksenlerinde eğilmeye maruz kalmış çift simetri eksenli I-kesitli çelik elemanlar için önemli bir sorundur. Bu elemanlar yatay yer değiştirme ve dönmeye karşı uygun bir şekilde desteklenmezlerse, yük taşıma kapasitelerine ulaşamadan önce yanal burulmalı burkulma riski altındadırlar. Bu çalışmada, farklı uç moment etkisi altındaki çift simetri eksenli I-kesitli çelik elamanların elastik yanal burulmalı burkulma davranışı, önerilen bir yöntem ile birlikte çeşitli tasarım standartları, literatürdeki yaklaşımlar ve sonlu eleman analizleri dikkate alınarak incelenmiştir. Burada önerilen yöntem, doğrusal değişen moment etkisi altında yanal burulmalı burkulma davranışını temsil eden diferansiyel denklemin sonlu farklar yöntemi ile çözümüne dayanır. Kritik moment ve moment düzeltme faktörü açısından bu yaklaşımları karşılaştırmak ve değerlendirebilmek için farklı yatay yönde tutulma uzunlukları ve çeşitli uç moment değerleri dikkate alınmıştır. Analiz sonuçları, yanal burulmalı burkulmanın, eğilme altında bulunan çift simetri eksenli I-kesitli çelik elemanlar için önemli bir konu olduğu ve önerilen yöntem ile tasarım standartları, literatürdeki yaklaşımlar ve sonlu elemanlar sonuçları ile karşılaştırıldığında sonuçların tatmin edici bir şekilde yansıtıldığını göstermektedir.
Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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APA UZUN E, SEÇER M (2019). Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient. , 635 - 642. 10.5505/pajes.2018.46656
Chicago UZUN Ertuğrul Türker,SEÇER MUTLU Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient. (2019): 635 - 642. 10.5505/pajes.2018.46656
MLA UZUN Ertuğrul Türker,SEÇER MUTLU Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient. , 2019, ss.635 - 642. 10.5505/pajes.2018.46656
AMA UZUN E,SEÇER M Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient. . 2019; 635 - 642. 10.5505/pajes.2018.46656
Vancouver UZUN E,SEÇER M Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient. . 2019; 635 - 642. 10.5505/pajes.2018.46656
IEEE UZUN E,SEÇER M "Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient." , ss.635 - 642, 2019. 10.5505/pajes.2018.46656
ISNAD UZUN, Ertuğrul Türker - SEÇER, MUTLU. "Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient". (2019), 635-642. https://doi.org/10.5505/pajes.2018.46656
APA UZUN E, SEÇER M (2019). Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, 25(6), 635 - 642. 10.5505/pajes.2018.46656
Chicago UZUN Ertuğrul Türker,SEÇER MUTLU Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi 25, no.6 (2019): 635 - 642. 10.5505/pajes.2018.46656
MLA UZUN Ertuğrul Türker,SEÇER MUTLU Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, vol.25, no.6, 2019, ss.635 - 642. 10.5505/pajes.2018.46656
AMA UZUN E,SEÇER M Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi. 2019; 25(6): 635 - 642. 10.5505/pajes.2018.46656
Vancouver UZUN E,SEÇER M Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi. 2019; 25(6): 635 - 642. 10.5505/pajes.2018.46656
IEEE UZUN E,SEÇER M "Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient." Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, 25, ss.635 - 642, 2019. 10.5505/pajes.2018.46656
ISNAD UZUN, Ertuğrul Türker - SEÇER, MUTLU. "Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient". Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi 25/6 (2019), 635-642. https://doi.org/10.5505/pajes.2018.46656
Sayfa Oluşturulma Tarihi
23-04-2024 12:29

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