REQUIRED FRACTURE TOUGHNESS OF STEEL TO PREVENT BRITTLE FRACTURE DURING EARTHQUAKES IN STEEL BRIDGE PIERS

• SASAKI Eiichi

  社団法人土木学会 東京工業大学大学院理工学研究科土木工学専攻

• ARAKAWA Taiji

  社団法人土木学会 東京工業大学大学院理工学研究科土木工学専攻

• MIKI Chitoshi

  社団法人土木学会 東京工業大学大学院理工学研究科土木工学専攻

• ICHIKAWA Atsushi

  社団法人土木学会 東京工業大学大学院理工学研究科土木工学専攻

Bibliographic Information

Other Title

• 鋼製橋脚における地震時脆性破壊防止に必要な鋼材の破壊靭性レベル
• コウセイ キョウキャク ニ オケル ジシンジゼイセイ ハカイ ボウシ ニ ヒツヨウ ナ コウザイ ノ ハカイジンセイ レベル

Abstract

In this study, the investigations were conducted on the required fracture toughness of steels to prevent brittle fracture during earthquakes in steel bridge piers. By considering the scenarios of the occurrence of brittle fracture, the patterns of prestrain that should be considered were shown, and then the effects of various patterns of prestrain on fracture toughness of steels made to be clear by the development of the method to introduce prestrain into specimens. Finally, by arranging all the results of this study and our previous study on the effects of plastic prestrain, the level of the required fracture toughness was suggested. To prevent brittle fracture during earthquakes, the temperature shift of 50 degrees of Celsius of the critical CTOD curves by plastic prestrain should be considered.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 2003 (731), 93-102, 2003-04-21

  Japan Society of Civil Engineers

Keywords

• steel bridge piers
• earthquakes
• brittle fracture
• plastic strain
• fracture toughness

Details

• CRID: 1390282680579424384
• NII Article ID: 10012499613
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.2003.731_93
• ISSN: 18827187
• ISSN: 02897806
• ISSN: http://id.crossref.org/issn/02897806
• NDL BIB ID: 6574427
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6574427
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/2003/731/2003_731_93/_pdf
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed