Eğrisel Alt Başlıklı Çelik Kirişlerin Ön Germeli Davranışının İncelenmesi

Erkan Polat; Barlas Özden Çağlayan

doi:10.29137/umagd.1217636

EN TR

Analyzing Pre-Stressed Steel Beams with Lower Flange Arch Shape

Abstract

In this study, it is aimed to determine the ideal section height according to the beam mid-section height by examining the buckling behavior of pre-stressed beam with the lower flange arch shape of which theoretical and experimental studies have been done before, For this, about 250 finite element models were prepared in the Sap 2000 program and buckling analyzes were performed. In addition, with the FEMAP (Nastran) Finite Element Analysis program, a solid finite element model prepared and nonlinear buckling analysis was performed. As a result of the analysis made, it was seen that the buckling coefficient increased as the curvature of the lower beam flange increased. Depending on the pre-tension force and span, the largest buckling coefficient does not remain at a fixed point with respect to the beam mid-height (h) / edge height (H) ratio. However, it was observed that the buckling load coefficient increased significantly from values lower than about h/H = 0,6.

Keywords

Öngermeli çelik kiriş , Burkulma analizi , Sonlu elemanlar analizi , Alt başlığı Kemer kiriş , Pre-stressed beam

Eğrisel Alt Başlıklı Çelik Kirişlerin Ön Germeli Davranışının İncelenmesi

Öz

Bu çalışmada, daha önce teorik ve deneysel çalışmaları yapılan alt başlığı eğrisel, ön germeli kirişin, kiriş orta kesit yüksekliğine göre burkulma davranışı incelenip ideal kesit yüksekliğinin belirlenmesi amaçlanmıştır. Bunun için Sap 2000 programında 250 civarı sonlu elemanlar modeli hazırlanarak burkulma analizleri yapılmıştır. İlaveten FEMAP (Nastran) Sonlu elemanlar analizi programı ile de deneysel modele uygun solid sonlu elemanlar modeli oluşturulup nonlineer burkulma analizi yapılmıştır. Yapılan analizler sonucunda kiriş alt başlığının eğriselliği arttıkça burkulma katsayısının arttığı görülmüştür. Ön germe kuvvetine ve açıklığa bağlı olarak en büyük burkulma katsayısı, kiriş orta yüksekliği (h) / kenar yüksekliği (H) oranına göre sabit bir noktada kalmamakta. Bununla beraber yaklaşık h/H = 0,6 oranından düşük değerlerden itibaren, burkulma yükü katsayısının belirgin bir şekilde arttığı gözlenmiştir.

Anahtar Kelimeler

Öngermeli çelik kiriş , Burkulma analizi , Sonlu elemanlar analizi , Kemer Kiriş

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Details

Primary Language

Turkish

Subjects

Civil Engineering

Journal Section

Research Article

Authors

Erkan Polat ^*
0000-0002-1080-3101
United States

Barlas Özden Çağlayan
0000-0002-8986-9188
Türkiye

Early Pub Date

July 7, 2023

Publication Date

July 14, 2023

Submission Date

December 12, 2022

Acceptance Date

May 30, 2023

Published in Issue

Year 2023 Volume: 15 Number: 2

DOI

https://doi.org/10.29137/umagd.1217636

IZ

https://izlik.org/JA92WG79BN

APA

Polat, E., & Çağlayan, B. Ö. (2023). Eğrisel Alt Başlıklı Çelik Kirişlerin Ön Germeli Davranışının İncelenmesi. International Journal of Engineering Research and Development, 15(2), 615-625. https://doi.org/10.29137/umagd.1217636

Kırıkkale University, Faculty of Engineering and Natural Science, 71450 Yahşihan / Kırıkkale, Türkiye.

ijerad@kku.edu.tr

Analyzing Pre-Stressed Steel Beams with Lower Flange Arch Shape

Abstract

Keywords

Eğrisel Alt Başlıklı Çelik Kirişlerin Ön Germeli Davranışının İncelenmesi

Öz

Anahtar Kelimeler

References

Details

Primary Language

Subjects

Journal Section

Authors

Early Pub Date

Publication Date

Submission Date

Acceptance Date

Published in Issue

DOI

IZ

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