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2004 Fiscal Year Final Research Report Summary

Study on the Damage Assessment method of Reinforced Concrete Structure by Nondestructive Impact Type Inspection

Research Project

Project/Area Number 15560407
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Structural engineering/Earthquake engineering/Maintenance management engineering
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

SONODA Yoshimi  Kyushu University, Faculty of Engineering, Associate Professor, 工学研究院・建設デザイン部門, 助教授 (40304737)

Co-Investigator(Kenkyū-buntansha) KATSUKI Satoshi  National Defense Academy, Faculty of Engineering, Professor, 建設環境工学科, 教授
HIKOSAKA Hiroshi  Kyushu University, Faculty of Engineering, Professor, 工学研究院・建設デザイン部門, 教授 (10037864)
HINO Shinichi  Kyushu University, Faculty of Engineering, Professor, 工学研究院・建設デザイン部門, 教授 (00136532)
Project Period (FY) 2003 – 2004
KeywordsDamage Assessment / Nondestructive test / Reinforced Concrete Structure / Damage Mechanics / Multi-pattern Differentiation Neural Network
Research Abstract

Recently, the maintenance problem of the existing RC structures has increased in Japan, and it is important to estimate the total life cycle cost of structure. In order to attain this purpose, it is necessary to evaluate the durability and predict the deterioration of the existing structures accurately. In this study, the following considerations are presented.
1)Several Nondestructive Impact Type Inspections were performed for the existing reinforced concrete bridges in order to investigate its reliability and the accuracy.
2)To develop the analytical method that could estimate the damage evolution process caused by chemical and mechanical effect, numerical program based on continuum damage mechanics was constructed. It is found that the proposed method could evaluate the durability of the existing RC beam, and the change of its ultimate strength under the various exposition conditions.
3)This study also presents an application of multi-pattern differentiation neural network for monitoring of fatigue damage in concrete material. This system uses the relationship between input data and output data for monitoring signal to detect the change of structural characteristic, and it can detect the progress of fatigue damage of concrete very well which has plural pattern between input data and output data

  • Research Products

    (8 results)

All 2005 2004 2003

All Journal Article (8 results)

  • [Journal Article] 疲労損傷モニタリングへの複関数分類学習ニューラルネットワークの適用2005

    • Author(s)
      作田健, 坊原尚記, 香月智, 梶田幸秀, 園田佳巨
    • Journal Title

      構造工学論文集 Vol.51A

      Pages: 379-388

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] An application of multi-pattern differentiation neural network system for monitoring of fatigue damage2005

    • Author(s)
      T.Sakuda, N.Bouhara, S.Katsuki, Y.Kajita, Y.Sonoda
    • Journal Title

      Journal of Structural Engineering Vol.51A

      Pages: 379-388

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 損傷力学を用いた鋼構造部材の疲労寿命評価法に関する基礎的研究2004

    • Author(s)
      園田佳巨, カンパセウステップオンサ, 彦坂煕
    • Journal Title

      土木学会論文集 No.752/I-66

      Pages: 79-88

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 損傷力学による既設RC桁の耐荷性能評価法に関する研究2004

    • Author(s)
      園田佳巨, 結城洋一, 杣辰雄, 牧角龍憲
    • Journal Title

      構造工学論文集 Vol.50A

      Pages: 771-780

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Basic Study on the Fatigue Life Prediction of Steel Structural Member Based on the Continuum Damage Mechanics2004

    • Author(s)
      Y.Sonoda, T.Khampaseuth, H.Hikosaka
    • Journal Title

      Journal of Structural Mechanics and Earthquake Engineering No.752/I-66

      Pages: 79-88

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] A Study on the Evaluation Method of Ultimate Strength and Durability of the Existing RC Beams by Damage Mechanics2004

    • Author(s)
      Y.Sonoda, Y.Yuuki, T.Soma, T.Makizumi
    • Journal Title

      Journal of Structural Engineering Vol.50A

      Pages: 771-780

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] A fundamental study on deterioration of theexisting RC beam by chemical and mechanical damage2003

    • Author(s)
      Y.Sonoda, N.Murato, H.Hikosaka
    • Journal Title

      Proc.of the 1st InternationalConference on fatigue damage of materials experiment and analysis

      Pages: 295-306

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] A fundamental study on deterioration of theexisting RC beam by chemical and mechanical damage2003

    • Author(s)
      Y.Sonoda, N.Murato, H.Hikosaka
    • Journal Title

      Proc.of the 1st International Conference on fatigue damage of materials experiment and analysis 7

      Pages: 295-306

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2006-07-11  

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