Effects of Fiberglass and Steel Sheet Reinforcement on the Bending Performance of Glulam Beams Constructed with Turkish Red Pine (Pinus brutia Ten.)

Guntekin E., Aydin T. Y.

KASTAMONU UNIVERSITY JOURNAL OF FORESTRY FACULTY, vol.15, no.1, pp.73-77, 2015 (ESCI) identifier

  • Publication Type: Article / Article
  • Volume: 15 Issue: 1
  • Publication Date: 2015
  • Journal Indexes: Emerging Sources Citation Index (ESCI), TR DİZİN (ULAKBİM)
  • Page Numbers: pp.73-77
  • Süleyman Demirel University Affiliated: Yes


A study was conducted to investigate the bending performance of glulam beams constructed of Red pine reinforced by fiberglass and steel plates. Local reinforcement is proposed in order to improve the flexural strength and stiffness of glulam beams. For the study, 15 full size glulam beams constructed of Turkish red pine lumber were produced. All beams had similar 5 layers consisting of two finger-jointed-members at the bottom, a single member at the fourth, six finger-jointed-members at the third and second layer and another single member at the top. Glulam beams were tested using three-point bending test to determine their load-deformation behavior. According to test results, elasticity of the glulam beams can be improved 14% and 24% using fiber glass and steel plates. Similarly, maximum load carrying capacity of glulam beams constructed of Turkish red pine lumbers may be improved 27 % and 36 % by using fiberglass and steel reinforcements, respectively. Reinforcement also changed the failure mode of glulam beams tested.