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jwri39_01_069
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論文情報
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
Transactions of JWRI / Vol.39 No.1 (2010-09)
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著者版フラグ
publisher
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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