Bending Analysis of Timber Connection Strengthen with Glass Fiber Reinforced Plastic

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Bending Analysis of Timber Connection Strengthen with Glass Fiber Reinforced Plastic


Sarıbıyık, Mehmet
AKGUL, Tahir
APAY, Ahmet
Sarıbıyık, Ali


In order to obtain both durability and originality of the timber structures it is necessary to strengthen them particularly in the weak joint places. The aims of strengthen in the connecting places are to decrease the stress, to obtain fibre continuity, to reduce disadvantages of nail and bolts. Nowadays, Glass Fibre Reinforced Plastics, (GFRP) produced via pultrusion process that is one of fibre reinforced polymer types, are used for strengthen of the structural elements. In recently, it has been increased strengthen for timber structural elements by using GFRP because of its high strength, light weight, corrosion resistance and also very easily applying to the structures. The aim of this study is to obtain the fibre continuity of connecting places of timber structural elements of construction systems that under the bending conditions. Mechanical performances of the connecting places of fibre reinforced longitudinal notched lap joints have been investigated. Experimental specimens have been prepared from black pine timber which is very abundant in nature. To determine performances of the specimens, 5 different types of adhesively bonded and strengthen with GFRP bar samples, have been prepared. The specimens have been tested subjected to bending strength and the obtained results have been compared each others. The outcomes demonstrate that the bending strength of the connection points strengthen with GFRP bar has higher than adhesively bonded connection specimen and this ratio is about 300 %.


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