Enhanced Method of Predicting Residual Yield and Tensile Strength Capacities of Corroded Steel Plates

• CHUN Pang-jo

  愛媛大学　工学部環境建設工学科

• IKEDA Hiroyuki

  本州四国連絡高速道路株式会社

• KAITA Tatsumasa

  徳山工業高等専門学校　土木建築工学科

• FURUKAWA Seiji

  西日本高速道路エンジニアリング四国株式会社

• OHGA Mitao

  愛媛大学　工学部環境建設工学科

Bibliographic Information

Other Title

• 腐食鋼板の応力状態の考察と要求精度に応じた残存引張強度評価式の構築

Abstract

The interest in the mechanical behavior of corroded steel members has been stimulated by the increase of aged steel structures including steel bridges. Some researchers have developed formulas to estimate the residual tensile strength from an average thickness of minimum cross section. However, it is found from the tensile tests and finite element analysis conducted in this research that the conventional methods do not necessarily predict the strength with high accuracy. Therefore, more accurate formulas are developed to estimate the strength which considers not only the average thickness of minimum cross section but also standard deviation of the thickness by reference to the nonlinear behavior observed experimentally and numerically. In addition, we have developed yet other formulas with acceptable accuracy, but required measurement efforts are much less. This allows the owner of steel structures to understand the residual strength of their structures with realistic efforts and costs.

Journal

• Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

  Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 69 (2), I_665-I_676, 2013

  Japan Society of Civil Engineers

Keywords

• corrosion
• corroded steel plate
• residual tensile strength
• residual yield strength
• effective thickness
• surface profile measurement

Details

• CRID: 1390001205349821952
• NII Article ID: 130004557398
• DOI: 10.2208/jscejam.69.i_665
• ISSN: 21854661
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed