Repair by Heating/Pressing on Locally Buckled Steel Bridge Pier and Its Behavior under Cyclic Loads

Hirohata, Mikihito; Morimoto, Takuya; Kim, You-Chul

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タイトル	Repair by Heating/Pressing on Locally Buckled Steel Bridge Pier and Its Behavior under Cyclic Loads
著者	Hirohata, Mikihito Hirohata, Mikihito
	Morimoto, Takuya Morimoto, Takuya
	Kim, You-Chul Kim, You-Chul
キーワード等	Repair
	Correction by heating/pressing
	Steel bridge pier
	Local buckling
	Residual imperfection
抄録	A series of experiments was conducted in order to elucidate behavior under cyclic loads of a steel bridge pier of which local buckling damage was repaired with correction by heating/pressing. The steel bridge pier specimens were locally buckled by loading simulating the situation of an earthquake. The locally buckled part was corrected by heating/pressing with or without water-cooling. Some deformations were left to avoid cracking in the welds, which were residual imperfections. After that, the same loading experiments were conducted. From the results, no deterioration was confirmed in the mechanical properties of the steel even with water-cooling only if the heating temperature was kept below the A1 transformation temperature. Although ideally the local buckling deformation was repaired within an allowance of initial deflection in correction by heating/pressing, it was apparent that making the residual imperfection mode opposite to the local buckling mode was effective for ensuring the maximum load was the same level as that of the virgin pier.
公開者	大阪大学接合科学研究所
公開者の別表記	Joining and Welding Research Institute, Osaka University
公開者 (ヨミ)	オオサカダイガクセツゴウカガクケンキュウジョ
掲載誌名	Transactions of JWRI
巻	39
号	1
開始ページ	69
終了ページ	74
刊行年月	2010-09
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/4669
言語	英語
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.39 No.1 (2010-09)

著者版フラグ	publisher
NII資源タイプ	紀要論文
ローカル資源タイプ	紀要論文
dcmi資源タイプ	text
DCTERMS.bibliographicCitation	Transactions of JWRI.39(1) P.69-P.74
DC.title	Repair by Heating/Pressing on Locally Buckled Steel Bridge Pier and Its Behavior under Cyclic Loads
DC.creator	Hirohata, Mikihito
	Morimoto, Takuya
	Kim, You-Chul
DC.publisher	大阪大学接合科学研究所
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2010-09
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/4669
DC.subject	Repair
	Correction by heating/pressing
	Steel bridge pier
	Local buckling
	Residual imperfection
DCTERMS.abstract	A series of experiments was conducted in order to elucidate behavior under cyclic loads of a steel bridge pier of which local buckling damage was repaired with correction by heating/pressing. The steel bridge pier specimens were locally buckled by loading simulating the situation of an earthquake. The locally buckled part was corrected by heating/pressing with or without water-cooling. Some deformations were left to avoid cracking in the welds, which were residual imperfections. After that, the same loading experiments were conducted. From the results, no deterioration was confirmed in the mechanical properties of the steel even with water-cooling only if the heating temperature was kept below the A1 transformation temperature. Although ideally the local buckling deformation was repaired within an allowance of initial deflection in correction by heating/pressing, it was apparent that making the residual imperfection mode opposite to the local buckling mode was effective for ensuring the maximum load was the same level as that of the virgin pier.
citation_title	Repair by Heating/Pressing on Locally Buckled Steel Bridge Pier and Its Behavior under Cyclic Loads
citation_author	Hirohata, Mikihito
	Morimoto, Takuya
	Kim, You-Chul
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2010-09
citation_journal_title	Transactions of JWRI
citation_volume	39
citation_issue	1
citation_firstpage	69
citation_lastpage	74
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/4669
citation_keywords	Repair
	Correction by heating/pressing
	Steel bridge pier
	Local buckling
	Residual imperfection

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