耐火木造部材の荷重支持部の木材密度が耐火性能に与える影響

大橋 宏和; 長岡 勉; 永盛 洋樹; 高橋 拡; 山本 正人; 杉田 敬太郎; 遊佐 秀逸; 大宮 喜文; 山田 誠; 齋藤 潔

doi:10.3130/aijt.21.151

Fire Safety

INFLUENCE OF WOOD DENSITY TO FIRE RESISTANCE OF THE LOAD-BEARING PART

Hirokazu OHASHI, Tsutomu NAGAOKA, Hiroki NAGAMORI, Hiromu TAKAHASHI, Masato YAMAMOTO, Keitaro SUGITA, Shuitsu YUSA, Yoshifumi OHMIYA, Makoto YAMADA, Kiyoshi SAITO

Author information

Hirokazu OHASHI
Research & Development Institute, Takenaka Corporation
Tsutomu NAGAOKA
Research & Development Institute, Takenaka Corporation
Hiroki NAGAMORI
Research & Development Institute, Takenaka Corporation
Hiromu TAKAHASHI
Research & Development Institute, Takenaka Corporation
Masato YAMAMOTO
Research & Development Institute, Takenaka Corporation
Keitaro SUGITA
Research & Development Institute, Takenaka Corporation
Shuitsu YUSA
Center for Better Living
Yoshifumi OHMIYA
Tokyo Univ. of Science
Makoto YAMADA
Japan Housing & Wood Technology Center
Kiyoshi SAITO
Saito Wood Industry

Keywords: Fire resistance wooden structure, Load-bearing part, Wood density, Fire resistance, Self-charring-stop, Fire resistance test

JOURNAL FREE ACCESS

2015 Volume 21 Issue 47 Pages 151-156

DOI https://doi.org/10.3130/aijt.21.151

Details

Abstract

Fire-resisting wood structural elements for building were developed. It is composed of three layers made of glued laminated timber, “a load-bearing part, a self-charring-stop and a surface layer”. Tree species of load-bearing part is limited to the only kind. In order to enable a species different, this research was carried out. Fire resistance test was performed to demonstrate the effect on fire resistance of the wood density. The relationship of fire resistance and wood density of the load-bearing part was clear. Usage of high wood density of the load-bearing part was obtained a conclusion that is advantageous to fire performance.

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