Investigation Of Different Fasteners In Roof Truss Elements In The Woodworking Industry

Ramazan Bülbül; H.özgür İmirzi; Nihat Döngel; Musa Kaya; Nurettin Gökbulut; İbrahim Pazarkaya; Emin Berk Kaya; Mert Arslan

Makale detayları

Investigation Of Different Fasteners In Roof Truss Elements In The Woodworking Industry

Yazarlar:

Ramazan Bülbül | H.özgür İmirzi | Nihat Döngel | Musa Kaya | Nurettin Gökbulut | İbrahim Pazarkaya | Emin Berk Kaya | Mert Arslan

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Ahşap İşleme

Dergi:

Turkish Journal of Forestry Vol.26 Issue 1, pp.45-54

Belge Tipi:

Makale

Yayın Tarihi:

3/2025

Belge Dili:

Türkçe

Document ID (Org No.):

2001344383

pISSN:

2149-3898

Anahtar kelimeler:

Özet:

 In this study, the compressive safety stresses of the roof trusses were determined depending on the different joining angles 90 at the rafter, 90 at the base and bisector at the connection points of the rafter and base elements used in traditional wooden roof systems and the different fastening materials nails, screws and bolts used to fix these connection points. In this study, the compressive safety stresses of roof trusses made of cedar Cedrus libani A.Rich. wood with air dry humidity value of 14, density value of 0.539 gcm3, bending strength of 95.37 Nmm2, modulus of elasticity in bending value of 10793,53 Nmm2 and dynamic bending strength value of 16.142 kJm2 were determined. The highest compressive safety stress value determined at the connection points of the elements in the roof truss made of cedar Cedrus libani A.Rich. wood was found to be 366.77 Nmm² depending on the bolt connection material and the 90 angle applied on the rafter. The lowest compressive safety stress value was determined as 38.93 Nmm² depending on the 90 angle applied to the nail fastener and rafter. In addition, it was determined that there was no statistically significant difference between the 90 joint angles applied at the rafter or base. According to the results obtained, in roof systems with both large spans and high load-bearing potential; 90 joint angles at the rafter or base are insignificant, but it is recommended to use bolt fasteners as fasteners. Another aspect of this study is that the experimental procedures applied to determine the compressive safety stress in the roof truss were also applied with the finite element method FEM. According to this method, it was found that shear stresses were higher in screw connected rafter and base joints.

 In this study, the compressive safety stresses of the roof trusses were determined depending on the different joining angles 90 at the rafter, 90 at the base and bisector at the connection points of the rafter and base elements used in traditional wooden roof systems and the different fastening materials nails, screws and bolts used to fix these connection points. In this study, the compressive safety stresses of roof trusses made of cedar Cedrus libani A.Rich. wood with air dry humidity value of 14, density value of 0.539 gcm3, bending strength of 95.37 Nmm2, modulus of elasticity in bending value of 10793,53 Nmm2 and dynamic bending strength value of 16.142 kJm2 were determined. The highest compressive safety stress value determined at the connection points of the elements in the roof truss made of cedar Cedrus libani A.Rich. wood was found to be 366.77 Nmm² depending on the bolt connection material and the 90 angle applied on the rafter. The lowest compressive safety stress value was determined as 38.93 Nmm² depending on the 90 angle applied to the nail fastener and rafter. In addition, it was determined that there was no statistically significant difference between the 90 joint angles applied at the rafter or base. According to the results obtained, in roof systems with both large spans and high load-bearing potential; 90 joint angles at the rafter or base are insignificant, but it is recommended to use bolt fasteners as fasteners. Another aspect of this study is that the experimental procedures applied to determine the compressive safety stress in the roof truss were also applied with the finite element method FEM. According to this method, it was found that shear stresses were higher in screw connected rafter and base joints.

 In this study, the compressive safety stresses of the roof trusses were determined depending on the different joining angles 90 at the rafter, 90 at the base and bisector at the connection points of the rafter and base elements used in traditional wooden roof systems and the different fastening materials nails, screws and bolts used to fix these connection points. In this study, the compressive safety stresses of roof trusses made of cedar Cedrus libani A.Rich. wood with air dry humidity value of 14, density value of 0.539 gcm3, bending strength of 95.37 Nmm2, modulus of elasticity in bending value of 10793,53 Nmm2 and dynamic bending strength value of 16.142 kJm2 were determined. The highest compressive safety stress value determined at the connection points of the elements in the roof truss made of cedar Cedrus libani A.Rich. wood was found to be 366.77 Nmm² depending on the bolt connection material and the 90 angle applied on the rafter. The lowest compressive safety stress value was determined as 38.93 Nmm² depending on the 90 angle applied to the nail fastener and rafter. In addition, it was determined that there was no statistically significant difference between the 90 joint angles applied at the rafter or base. According to the results obtained, in roof systems with both large spans and high load-bearing potential; 90 joint angles at the rafter or base are insignificant, but it is recommended to use bolt fasteners as fasteners. Another aspect of this study is that the experimental procedures applied to determine the compressive safety stress in the roof truss were also applied with the finite element method FEM. According to this method, it was found that shear stresses were higher in screw connected rafter and base joints.

 Bu çalışmada, geleneksel ahşap çatı sistemlerinde kullanılan mertek ve taban elemanlarının bağlantı noktalarındaki farklı birleştirme açıları mertekte 90, tabanda 90 ve açıortay ile bu bağlantı noktalarının tespit edilmesinde kullanılan farklı bağlantı gereçlerine Çivi, vida ve bulon bağlı olarak; çatı makaslarının basınç emniyet gerilmeleri tespit edilmiştir. Yapılan çalışmada hava kurusu rutubet değeri 14, yoğunluk değeri 0.539 gcm3, eğilme direnci 95.37 Nmm2, Eğilmede elastikiyet modülü değeri 10793,53 Nmm2 ve dinamik eğilme direnci değeri ise 16.142 kJm2 olan sedir Cedrus libani A.Rich. odunundan üretilen çatı makasındaki elemanların bağlantı noktalarında tespit edilen en yüksek basınç emniyet gerilmesi değerinin; bulon bağlantı gereci ve mertekte uygulanan 90lik açıya bağlı olarak 366.77 Nmm² olduğu tespit edilmiştir. En düşük basınç emniyet gerilmesi ise çivi bağlantı gereci ve mertekte uygulanan 90lik açıya bağlı olarak 38.93 Nmm² olarak tespit edilmiştir. Ayrıca yapılan çalışmada mertek ya da tabanda uygulanan 90lik birleştirme açıları arasında istatistiksel olarak anlamlı bir farkın olmadığı tespit edilmiştir. Elde edilen sonuçlara göre hem geniş açıklıklara ve hem de fazla yük taşıma potansiyeline sahip çatı sistemlerinde; mertek ya da tabanda 90lik birleştirme açılarının önemsiz olduğu fakat bağlantı gereci olarak bulon bağlantı gerecinin kullanılması önerilir. Bu çalışmanın diğer bir yönü ise çatı makasında meydana gelen basınç emniyet gerilmesinin tespitine yönelik uygulanan deneysel işlemler sonlu elemanlar metodu FEM ile de uygulanmıştır. Bu metoda göre ise vida bağlantılı mertek ve taban birleştirmelerinde kayma gerilmelerinin daha fazla olduğu tespit edilmiştir.

Makale detayları

Investigation Of Different Fasteners In Roof Truss Elements In The Woodworking Industry

Yazarlar:

Ramazan Bülbül | H.özgür İmirzi | Nihat Döngel | Musa Kaya | Nurettin Gökbulut | İbrahim Pazarkaya | Emin Berk Kaya | Mert Arslan

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Ahşap İşleme

Dergi:

Turkish Journal of Forestry Vol.26 Issue 1, pp.45-54

Belge Tipi:

Makale

Yayın Tarihi:

3/2025

Belge Dili:

Türkçe

Document ID (Org No.):

2001344383

pISSN:

2149-3898

Cedar

roof joint

fastener

modeling

finite element analysis.Sedir

Çatı Makası

Bağlantı Elemanı

Modelleme

sonlu elemanlar analizi

Sayı

Makale detayları

Yazarlar: Ramazan Bülbül | H.özgür İmirzi | Nihat Döngel | Musa Kaya | Nurettin Gökbulut | İbrahim Pazarkaya | Emin Berk Kaya | Mert Arslan

Yayıncı: Isparta University of Applied Sciences

Ana Başlıklar: Ahşap İşleme

Dergi: Turkish Journal of Forestry Vol.26 Issue 1, pp.45-54

Belge Tipi: Makale

Yayın Tarihi: 3/2025

Belge Dili: Türkçe

Document ID (Org No.): 2001344383

pISSN: 2149-3898

Sayı

Yazarlar:

Ramazan Bülbül | H.özgür İmirzi | Nihat Döngel | Musa Kaya | Nurettin Gökbulut | İbrahim Pazarkaya | Emin Berk Kaya | Mert Arslan

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Ahşap İşleme

Dergi:

Turkish Journal of Forestry Vol.26 Issue 1, pp.45-54

Belge Tipi:

Makale

Yayın Tarihi:

3/2025

Belge Dili:

Türkçe

Document ID (Org No.):

2001344383

pISSN:

2149-3898