Bending Stiffness and Strength of Reinforcement Arrangements for CFRP Reinforced Glulam (AFRW)

Abstract

FRP reinforced glulam has been actively developed in USA and EU since 2000 to now. Our colleges also had developed AFRW （advanced fiber reinforced wood） in 2000, in Japan. We restarted to develop AFRW to help solve Japanese forestry problems, while aiming at future high quality timber buildings. Experiments aiming to lower the cost of AFRW were conducted with the parameters of CFRP reinforcement arrangements and the CFRP ratio, taking into account end joint processing. It was found that AFRW with only a bottom CFRP arrangement was economically effective when aiming at less than 1.5 times of bending stiffness, but AFRW with both top and bottom CFRP arrangement was economically effective when aiming at more than 1.7 times of bending stiffness. New types of CFRP arrangements for AFRW edges were developed, and were demonstrated to have the same mechanical properties as fully arranged CFRP sheets against the longitudinal and width directions of the AFRW. (cid:9487)(cid:9513)(cid:9533)(cid:9531)(cid:9523)(cid:9526)(cid:9512)(cid:9527) : Fiber Reinforced Wood, Arrangement of CFRP, Mechanical property, Glued laminated Timber.