This work deals with the development of a series of experimental tests for the determination of the flexural behaviour of un-reinforced and reinforced beams of glue laminated (glulam) timber. The reinforcements consisted of steel bars. All the timber beams were tested to failure in a four point loading set-up. The results showed that the reinforced beams performed better than the un-reinforced beams, concerning the mechanical strength. The reinforced beams showed, on the contrary of the un-reinforced beams, consistent increasing in stiffness and ultimate loads. And, above all, they redistributed the stress field in the cross-section so they showed a significant spread ductile zone against a brittle zone in a typical un-reinforced beam. For the reinforced beams the percentage of increase was 25.9 % for the stiffness, 48.1% for the maximum load, and it was 43.8 % for the ductility, respectively.
A Comparison of Un-reinforced and Reinforced GlulamTimber with Steel Bars
DE LUCA, Vincenzo;MARANO, Cosimo
2011-01-01
Abstract
This work deals with the development of a series of experimental tests for the determination of the flexural behaviour of un-reinforced and reinforced beams of glue laminated (glulam) timber. The reinforcements consisted of steel bars. All the timber beams were tested to failure in a four point loading set-up. The results showed that the reinforced beams performed better than the un-reinforced beams, concerning the mechanical strength. The reinforced beams showed, on the contrary of the un-reinforced beams, consistent increasing in stiffness and ultimate loads. And, above all, they redistributed the stress field in the cross-section so they showed a significant spread ductile zone against a brittle zone in a typical un-reinforced beam. For the reinforced beams the percentage of increase was 25.9 % for the stiffness, 48.1% for the maximum load, and it was 43.8 % for the ductility, respectively.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
