Investigation of Box Sections with Heading Plates Under the Effect of Flexural and Axial Force

Abstract

Ductility needs to be ensured in the building system, from connection design to overall structure design. For the RHS profiles that are commonly used in general, the sudden loss of capacity and brittle fractures that occur under the influence of internal forces may cause irreversible damage. For this reason, the design of structural elements should be made with the consideration of the possible buckling conditions. In this study, RHS profiles are strengthened with endplates in order to prevent local buckling. The effects of this reinforcement on local buckling and carrying capacity of welded joints in RHS profiles under the influence of axial force are examined. Analyzes are made numerically under the influence of cyclic static incremental loads. It has been observed that the strengthening technique with the endplate gives effective results when possible fractures in the weld seam are prevented.

Keywords

• RHS Beams-Columns
• End Plate Connections
• Welded Moment Resisting Connections
• Moment Resisting Frame Systems

Eğilme ve Eksenel Kuvvet Etkisindeki Başlık Levhalı Kutu Kesitlerin İncelenmesi

Abstract

Yapı sistemi üzerinde birleşim tasarımından genel yapı tasarımına dek, süneklik özelliklerinin sağlanması gerekir. Ülkemizde yaygın olarak tercih edilen kutu kesitli profillerin iç kuvvetler tesiri altında oluşan ani kapasitelerin kayıplarına ve gevrek kırılmalarına yol açarak telafi edilemez hasarlara neden olabilir. Bu nedenle yapı elemanlarının tasarımlarında gerçekleşebilecek burkulma durumunun dikkate alınarak tasarımları yapılmalıdır. Yapılan bu çalışmada, kutu profillerin lokal burkulmalarının önlenmesi amacıyla başlık levhalarıyla güçlendirilmiştir. Bu güçlendirmenin eksenel kuvvet etkisi altındaki kutu kesitli profillerde kaynaklı birleşim lokal burkulmaları ve taşıma kapasitesi üzerindeki etkileri incelenmiştir. Analizler, tersinir statik artımsal yükler etkisinde sayısal olarak yapılmıştır. Kaynak dikişinde meydana gelmesi olası yırtılmalar önlendiğinde başlık levhasıyla güçlendirme tekniğinin etkili sonuçlar verdiği görülmüştür.

Keywords

• Kutu Kesitli Kiriş-Kolonlar
• Alın Levhalı Birleşim
• Kaynaklı Moment Aktaran Birleşim
• Moment Aktaran Çerçeve Sistemler

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