Experimental Investigation of The Effects of Mechanical Anchor Number and Layout Shape on Bond Stress-Slip Displacement Behavior at Timber Joints

Year 2021, Volume: 13 Issue: 1, 1 - 12, 18.01.2021

Ayşegül Özden Acehan , Ömer Mercimek , Rahim Ghoroubi , Ozgur Anıl

https://doi.org/10.29137/umagd.805399

Abstract

The general load-displacement and shear stress-shear displacement behavior of the joining area combined with adhesive and mechanical connectivity in wooden structures and structural elements are highly effective on the capacity of the structural system and collapse mechanisms. The behavior of the wood joining area is an important subject that needs to be examined. Also, it exhibits different shear stress-shear displacement behaviors that vary greatly according to the mechanical properties, structure, and type of the material. The comprehensive experimental study examining the general load-displacement behavior, stress distributions and shear stress-shear displacement behaviors in the connection area which wood structural elements are combined with adhesive or adhesive and mechanical anchors have not been found in the literature. Therefore, an experimental study was planned. In this study, the general load-displacement behavior of the timber connection regions which are connected by adhesive and mechanical anchors together with adhesive, with varying length of 180, 240 and 350 mm are investigated experimentally. Besides, the effect of changing in the number and location of mechanic anchors used in the connection area on the general load-displacement and shear stress-shear displacement behavior was also investigated.

Keywords

Timber to timber joint, Anchorage, Stress distribution, Bond-slip model

Ahşap Bağlantı Noktalarında Mekanik Ankraj Sayısı ve Yerleşim Şeklinin Kayma Gerilmesi-Kayma Deplasmanı Davranışı Üzerindeki Etkilerinin Deneysel Olarak İncelenmesi

Abstract

Ahşap yapılar ve yapı elemanlarında yapıştırıcı ve mekanik bağlantı elemanları ile bir araya getirilmiş birleşim bölgerinin genel yük-deplasman davranışı, kayma gerilmesi- kayma deplasmanı davranışları, yapısal sistemin kapasitesi ve göçme mekanizmaları üzerinde son derece etkilidir. Ahşap-ahşap bağlantı bölgelerinin davranışları, malzemenin mekanik özelliklerine, yapısına ve türüne göre çok büyük oranda değişim gösteren farklı kayma gerilmesi-kayma deplasmanı davranışları sergileyen, incelenmesi gerekli olan önemli bir konudur. Ahşap yapı elemanlarının yapıştırıcı ve yapıştırıcı ile birlikte mekanik ankrajlar ile birleştirilmesi durumunda genel yük-deplasman davranışlarının, bağlantı bölgesindeki gerilme dağılımları ile kayma gerilmesi - kayma deplasmanı davranışlarının incelendiği kapsamlı bir deneysel çalışmaya literatürde rastlanmamıştır. Bu nedenle deneysel bir çalışma planlanmıştır. Bu çalışma kapsamında birbirlerine yapıştırıcı ve yapıştırıcı ile birlikte mekanik ankrajlar ile bağlanmış olan, kenetlenme uzunlukları 180, 240 ve 350 mm olarak değişim gösteren ahşap bağlantı bölgelerinin, eksenel çekme yükü etkisi altındaki genel yük deplasman davranışları deneysel olarak incelenmiştir. Ayrıca çalışma kapsamında birleşim bölgesinde kullanılan mekanik ankraj sayısı ve yerleşiminin değişim göstermesinin, genel yük-deplasman davranışı ve kayma gerilmesi-kayma deplasmanı davranışları üzerindeki etkileri de araştırılmıştır.

Keywords

Ahşap bağlantı, Ankraj, Gerilme Dağılmı, Gerilme-kayma deplasmanı

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