Analyzing Pre-Stressed Steel Beams with Lower Flange Arch Shape

Erkan Polat; Barlas Özden Çağlayan

Makale detayları

Analyzing Pre-Stressed Steel Beams with Lower Flange Arch Shape

Yazarlar:

Erkan Polat | Barlas Özden Çağlayan

Yayıncı:

Kirikkale University

Ana Başlıklar:

Civil Engineering

Dergi:

International Journal of Engineering Research and Development Vol.15 Issue 2, pp.615-625

Belge Tipi:

Makale

Yayın Tarihi:

7/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001284755

pISSN:

1308-5506

Anahtar kelimeler:

Özet:

 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 hH  0,6.

 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 hH  0,6.

 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 hH  0,6.

 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 hH  0,6 oranından düşük değerlerden itibaren, burkulma yükü katsayısının belirgin bir şekilde arttığı gözlenmiştir.

Makale detayları

Analyzing Pre-Stressed Steel Beams with Lower Flange Arch Shape

Yazarlar:

Erkan Polat | Barlas Özden Çağlayan

Yayıncı:

Kirikkale University

Ana Başlıklar:

Civil Engineering

Dergi:

International Journal of Engineering Research and Development Vol.15 Issue 2, pp.615-625

Belge Tipi:

Makale

Yayın Tarihi:

7/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001284755

pISSN:

1308-5506

Öngermeli çelik kiriş

Burkulma analizi

Sonlu elemanlar analizi

Alt başlığı Kemer kiriş

Pre-stressed beam

Öngermeli çelik kiriş

Burkulma analizi

Sonlu elemanlar analizi

Kemer Kiriş

Sayı

Makale detayları

Yazarlar: Erkan Polat | Barlas Özden Çağlayan

Yayıncı: Kirikkale University

Ana Başlıklar: Civil Engineering

Dergi: International Journal of Engineering Research and Development Vol.15 Issue 2, pp.615-625

Belge Tipi: Makale

Yayın Tarihi: 7/2023

Belge Dili: Türkçe

Document ID (Org No.): 2001284755

pISSN: 1308-5506

Sayı

Yazarlar:

Erkan Polat | Barlas Özden Çağlayan

Yayıncı:

Kirikkale University

Ana Başlıklar:

Civil Engineering

Dergi:

International Journal of Engineering Research and Development Vol.15 Issue 2, pp.615-625

Belge Tipi:

Makale

Yayın Tarihi:

7/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001284755

pISSN:

1308-5506