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A platform for research: civil engineering, architecture and urbanism
EARTHQUAKE-RESISTANCE REINFORCEMENT METHOD AND PC ELECTRIFICATION COLUMN
PROBLEM TO BE SOLVED: To provide an earthquake-resistance reinforcement technology of a PC electrification column capable of shortening work manhours.SOLUTION: A reinforcement layer 12 is formed by "a winding-up process" of winding up PVA-based fiber on an outer periphery up to a predetermined height of 1.5 m or more and 4.0 m or less by providing an unfixed part 14 of about several centimeters from the root of an existing PC electrification column 10. A volumetric change to a hollow part caused by compression fracture of the PC electrification column 10 is restricted in "an injection process" of injecting an infilling material 18 into a hollow part 16 of the PC electrification column 10. The PVA-based fiber is lighter than a reinforcement material of a steel iron property and also excellent in transportability due to being carriable in by winding as a sheet-like fiber structure, and work manhours can also be shortened. The PVA-based fiber can also omit finish coating due to being excellent in weatherability and alkali resistance.
【課題】作業工数を短縮できるＰＣ電化柱の耐震補強技術を提供する。【解決手段】既設のＰＣ電化柱１０の付け根から数ｃｍ程度の未定着部１４を設けるようにして１．５ｍ以上４．０ｍ以下の所定の高さまでその外周にＰＶＡ系繊維を巻き立てる「巻き立て工程」で補強層１２を形成する。また、ＰＣ電化柱１０の中空部１６に中詰め材１８を注入する「注入工程」で、ＰＣ電化柱１０の圧縮破壊に伴う中空部への体積変化を拘束する。ＰＶＡ系繊維は、鋼鉄性の補強材に比べて軽く、またシート状等の繊維構造体にして巻いて搬入することができるので運搬性に優れ、作業工数の短縮化も図れる。また、ＰＶＡ系繊維は、耐候性・耐アルカリ性等に優れるため上塗りも省略可能である。【選択図】図２
EARTHQUAKE-RESISTANCE REINFORCEMENT METHOD AND PC ELECTRIFICATION COLUMN
PROBLEM TO BE SOLVED: To provide an earthquake-resistance reinforcement technology of a PC electrification column capable of shortening work manhours.SOLUTION: A reinforcement layer 12 is formed by "a winding-up process" of winding up PVA-based fiber on an outer periphery up to a predetermined height of 1.5 m or more and 4.0 m or less by providing an unfixed part 14 of about several centimeters from the root of an existing PC electrification column 10. A volumetric change to a hollow part caused by compression fracture of the PC electrification column 10 is restricted in "an injection process" of injecting an infilling material 18 into a hollow part 16 of the PC electrification column 10. The PVA-based fiber is lighter than a reinforcement material of a steel iron property and also excellent in transportability due to being carriable in by winding as a sheet-like fiber structure, and work manhours can also be shortened. The PVA-based fiber can also omit finish coating due to being excellent in weatherability and alkali resistance.
【課題】作業工数を短縮できるＰＣ電化柱の耐震補強技術を提供する。【解決手段】既設のＰＣ電化柱１０の付け根から数ｃｍ程度の未定着部１４を設けるようにして１．５ｍ以上４．０ｍ以下の所定の高さまでその外周にＰＶＡ系繊維を巻き立てる「巻き立て工程」で補強層１２を形成する。また、ＰＣ電化柱１０の中空部１６に中詰め材１８を注入する「注入工程」で、ＰＣ電化柱１０の圧縮破壊に伴う中空部への体積変化を拘束する。ＰＶＡ系繊維は、鋼鉄性の補強材に比べて軽く、またシート状等の繊維構造体にして巻いて搬入することができるので運搬性に優れ、作業工数の短縮化も図れる。また、ＰＶＡ系繊維は、耐候性・耐アルカリ性等に優れるため上塗りも省略可能である。【選択図】図２
EARTHQUAKE-RESISTANCE REINFORCEMENT METHOD AND PC ELECTRIFICATION COLUMN
耐震補強方法およびＰＣ電化柱
NAKATA HIROKI (author) / OKAMOTO MASARU (author) / KAWASHIMA NORIKO (author) / OGAWA ATSUHISA (author)
2015-10-08
Patent
Electronic Resource
Japanese
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