Comparison of Buckling Loads of Masonry Slender Columns with Rectangular and Circular Cross-Section

Year 2021, Volume: 24 Issue: 1, 131 - 142, 01.03.2021

Arif Gürel Rabia İzol Beyhan İpekyüz H. Almıla Arda Büyüktaşkın Recep Kadir Pekgökgöz

https://doi.org/10.2339/politeknik.561059

Cited By: 2

Abstract

This study aims at comparison of buckling loads of masonry slender columns having rectangular and circular cross-section subjected to their own weight and eccentric vertical top load. It has been assumed that the material of the columns is a homogeneous continuum which has no tensile strength and, linear-elastic in compression. For the practical determination of the buckling loads, an effective calculation method existing in the literature has been adopted. For sample square and circular columns, buckling loads have been obtained and the effect of cross-section shape discussed. Finite element model for one of the square columns has been created with the Abaqus program, the buckling load has been determined and compared with the result of the present study’s method. It has been seen that there is a good agreement between the results. Variation of buckling loads of the considered columns depending on the load eccentricity have been determined. Moreover, analytical expressions have been obtained for the variation of buckling loads of the square and circular columns depending on the vertical load eccentricity. 

Keywords

Masonry column, rectangular and circular section, buckling load, eccentricity, Abaqus

Dikdörtgen ve Daire Kesitli Yığma Narin Kolonların Burkulma Yüklerinin Karşılaştırılması

Abstract

Bu çalışma kendi ağırlığı ve dışmerkez düşey tepe yükü etkisinde bulunan dikdörtgen ve daire kesitli yığma narin kolonların burkulma yüklerini karşılaştırmayı amaçlamaktadır. Kolonların malzemesi çekme dayanımı olmayan, basınçta doğrusal-elastik, homojen bir sürekli ortam kabul edilmiştir. Burkulma yüklerinin pratik olarak belirlenmesi için literatürde bulunan etkin bir hesap yöntemi esas alınmıştır. Örnek kare ve dairesel kolonlar için burkulma yükü değerleri elde edilmiş ve bu yük üzerinde kesit şeklinin etkisi irdelenmiştir. Kare kolonlardan birinin Abaqus programıyla sonlu eleman modeli oluşturulup, burkulma yükü belirlenmiş ve çalışmadaki yöntemin sonucuyla karşılaştırılmıştır. Sonuçlar arasında iyi bir uyuşum olduğu görülmüştür. Ele alınan kolonların burkulma yüklerinin yükün dışmerkezliğine bağlı değişimi belirlenmiştir. Ayrıca, kare ve daire kesitli kolonların burkulma yüklerinin dışmerkezliğe bağlı değişimi için analitik ifadeler elde edilmiştir.

Keywords

Yığma kolon, dikdörtgen ve daire kesit, burkulma yükü, dışmerkezlik, Abaqus

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