To suppress the future deterioration of precast members.SOLUTION: A precast member (5) includes: a concrete body 14; and multiple insert members 15 buried in the concrete body 14 for locking during lifting. The insert member 15 is made of fiber-reinforced plastic and has a protruding part 15b that protrudes from an upper surface of the concrete body 15. Since the insert member 15 has the protruding part 15b, there is no need to provide a through hole or a box-out on an upper surface of the concrete body 14, and there is no need to provide post-fill materials on the upper surface of the concrete body 14. Therefore, occurrences of cracks and edge separation are suppressed.SELECTED DRAWING: Figure 3
【課題】プレキャスト部材の将来の劣化を抑制する。【解決手段】プレキャスト部材(5)は、コンクリート本体14と、吊り上げ時の係止のためにコンクリート本体14に埋設された複数のインサート部材15とを備える。インサート部材15は、繊維補強プラスチックからなり、且つコンクリート本体15の上面から突出する突出部15bを有する。インサート部材15が突出部15bを有するため、コンクリート本体14の上面に貫通孔や箱抜きを設ける必要がなく、後埋材をコンクリート本体14の上面に設ける必要もない。よって、ひび割れや縁切れの発生が抑制される。【選択図】図3
PRECAST MEMBER AND LIFTING STRUCTURE OF PRECAST MEMBER
プレキャスト部材及びプレキャスト部材の吊り上げ構造
2024-03-26
Patent
Electronic Resource
Japanese
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