木造高層化に向けた燃え止まり型木質耐火構造梁の耐火性能の高度化と断面制御の両立

In order to ensure fire resistance with wooden structures, self-extinguishment and carbonization control are necessary, but as the required fire resistance time increases, the cross section becomes larger. Therefore, in this study, bench-scale and full-scall beam heating tests were conducted on wooden fireproof structural members using fire-retardant cedar for the barrier layer, using the laminated direction and the amount of chemicals as parameters. As a result, the difference in the effect of the barrier layer during heating and cooling, and the cross-sectional configuration of the member that reduces the volume and weight of the barrier layer were clarified.