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

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

doi:https://doi.org/10.18910/4669

このアイテムのアクセス数:106件（2023-12-03 00:40 集計）

このアイテムへのリンクには次のURLをご利用ください: https://doi.org/10.18910/4669

このアイテムへのリンクには次のURLをご利用ください: https://hdl.handle.net/11094/4669

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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	NRID 1000050565140 1000050565140 ORCID 0000-0003-4013-7960 0000-0003-4013-7960 researchmap permalink m_hirohata m_hirohata Scopus Author ID 7006219862 7006219862 著者名 Hirohata, Mikihito
	著者名 Morimoto, Takuya
	NRID 1000020144529 1000020144529 著者名 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.
出版者	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
収録物名	Transactions of JWRI
巻(号)	39(1)
ページ	69-74
刊行年月	2010-09
言語	英語
ハンドルURL	https://hdl.handle.net/11094/4669
DOI	https://doi.org/10.18910/4669
PISSN	03874508
NCID	AA00867058
アクセス権	open access
出版タイプ	Version of Record
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.39 No.1 (2010-09)

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. 2010, 39(1), p. 69-74
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
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2010-09
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.
DC.identifier	10.18910/4669
DC.format	application/pdf
citation_doi	https://doi.org/10.18910/4669
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
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
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_public_url	https://hdl.handle.net/11094/4669
citation_doi_detail	10.18910/4669

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