FIRE RESISTANT STRUCTURE AND CONSTRUCTION METHOD OF FIRE RESISTANT STRUCTURE: Fid-Bau Portal

FIRE RESISTANT STRUCTURE AND CONSTRUCTION METHOD OF FIRE RESISTANT STRUCTURE

MATSUOKA NAOTO / KANAMORI SEIJI / MIYAKE AKIHIKO / HATSUTA (HONDA) AKARI

To provide a fire resistant structure which can be easily disassembled and can prevent a fastening member from becoming a thermal bridge.SOLUTION: A fire resistant structure 1 provided in a wood core material 10 as a main structure part of a wooden building includes: a first fire resistant covering material 11 which is stacked on the wood core material 10 and is fixed by a first fastening member 21; and a second fire resistant covering material 12 which is stacked on the first fire resistant covering material 11 and is fixed by coupling a second fastening member 22 to the wood core material 10, wherein a recess 26 embedding a head 22A of the second fastening member 22 is recessed in the second fire resistant covering material 12, and a fire resistant filler 15 covering the head 22A of the second fastening member 22 is detachably fit into the recess 26.SELECTED DRAWING: Figure 1

【課題】容易に解体することができると共に留付け部材が熱橋となることを防ぐことができる耐火構造を提供する。【解決手段】木造建築物の主要構造部である木質芯材１０に設けられる耐火構造１は、木質芯材１０に積層されて第１留付け部材２１で固定される第１耐火被覆材１１と、第１耐火被覆材１１に積層され、第２留付け部材２２を木質芯材１０に結合させることで固定される第２耐火被覆材１２と、を備え、第２耐火被覆材１２には、第２留付け部材２２の頭部２２Ａを埋没させる凹部２６が凹設され、凹部２６には、第２留付け部材２２の頭部２２Ａを覆い隠す耐火充填材１５が着脱可能に嵌合する。【選択図】図１

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