TY  - JOUR
TI  - Lateral torsional buckling of doubly symmetric I-shaped steel members under linear moment gradient
AB  - 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.
AU  - SEÇER, MUTLU
AU  - UZUN, Ertuğrul Türker
DO  - 10.5505/pajes.2018.46656
PY  - 2019
JO  - Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi
VL  - 25
IS  - 6
SN  - 2147-5881
SP  - 635
EP  - 642
DB  - TRDizin
UR  - http://search/yayin/detay/347756
ER  -