Post-tensioning glulam timber beams with basalt FRP tendons

Fire resistance of FRP reinforced glulam beams

Thin laminates made of high-strength pultruded fiber reinforced polymers (FRP) are increasingly being used to reinforce glue-laminated timber (glulam) beams, creating a new composite glulam (FRP glulam) significantly stronger in bending than a conventional (unreinforced) glulam of equal size. Large timber members have long been recognized for maintaining structural integrity in fires and this p...

FRP for Flexural Strengthening of Timber Bridge Beams

The majority of timber bridges in Canada requires flexural and/or shear strengthening to increase their load-carrying capacity in response to the demand to increase the allowable gross vehicle weight. This paper presents an innovative approach for the use of fibre reinforced polymers (FRP) to strengthen timber bridges. The advantages of this strengthening system are inevitable: fibre reinforced...

Commercialization of FRP reinforced glulam beam technology

Thin laminates made of high-strength pultruded fiber reinforced polymers (FRP) have been developed to reinforce gluelaminated timber (glulam) beams. The FRP reinforced glulams are significantly stiffer, stronger, and have less variation in bending strength than a conventional (unreinforced) glulam of equal size. Following the technical development and model building code approval of design proc...

Shear Resistance of Glulam Beams with Cracks

A reduction of the shear resistance was introduced with the crack factor kcr in Eurocode 5. The factor 0.67 corresponds to cracks that have a depth of 1/3 of the beam width, which rarely occurs under normal conditions. The glulam industry in Sweden has not observed any problems or shear failures due to cracks with previously used shear values. Hence the design requirements do not seem reasonabl...

Cib-w18/34-12-3 International Council for Research and Innovation in Building and Construction Working Commission W18 - Timber Structures Design Model for Frp Reinforced Glulam Beams