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Study on Dynamic Characteristics of Stainless Steel Structures

Research Project

Project/Area Number 04650517
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Building structures/materials
Research InstitutionOsaka Insitute of Technology (1993-1994)
Kyoto University (1992)

Principal Investigator

KOHZU Isao  Osaka Institute of Technology, Faculty of Enginnering, Professor, 工学部, 教授 (50026291)

Co-Investigator(Kenkyū-buntansha) SUITA Keiichiro  Kyoto University, Faculty of Engineering, Research Assistant, 工学部, 助手 (70206374)
Project Period (FY) 1992 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1994: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1993: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1992: ¥700,000 (Direct Cost: ¥700,000)
KeywordsStainless steel / Strain Rate / Mechanical Property / Bolted Joint / Shaking Table Experiment / Restoring Force / システム同定 / 短柱圧縮試験 / 振動実験 / 耐振安全性 / ボルト接合部
Research Abstract

In this reseach dynamic properties of stainless steel structures are experimentally investigated, when the structures would be subjected to earthquake shocks. The research consists of two parts.
Initially, the effect of strain rate on the mechanical properties of stainless steel structural joint is experimentally investigated. Raw metals and high-strength bolted joint specimens, made of SUS304 and SUS304N2 stainless steels, were prepared for monotonic tensile loading test and cyclic reversed loading test. From the test results, the following conclusions have been drawn.
(1) 0.1,0.2proof stresses and tensile strengths of raw metals are affected by strain rate in common with mild steel,
(2) The friction limits and the slip loads of friction type bolted joints are increased affected by loading rates, though those of mild steels were decreased.
Secondly, dynamic properties of SUS304 stainless steel structures are investigated by employing shaking table experiment. In the experiment, stainless RHS section was only used for the beam to construct so-called weak beam type one bay-one story framed structure, and the structure set on the shaking table was vibrated by using well known past earthquake acceleration records. The initial stiffness of the test frame can be estimated by using an equivalent modulus based on the average of the initial Young's modulus and the secant modulus at the 0.1% proof stress obtained from the stub column test result. The nondimensional relation between the restoring force and horizontal displacement of the stainless steel frame may be comparable with the relation of mild steel frame, by adopting 0.1%proof stress and the equivalent modulus.

Report

(4 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • 1992 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] 吹田啓一郎: "ステンレス鋼素材および高力ボルト接合部の履歴特性に関する高速載荷実験" 第9回日本地震工学シンポジウム(1994). 1435-1440 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 甲津功夫: "梁降伏型ステンレス架構の振動実験" 構造工学論文集. Vol.41B(掲載予定). (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Keiichiro SUITA: "A study on the behaviors of stainless steel material and high-strength bolted joints under high speed cyclic loadings" Proceedings of the 9th Japan Earthquake Enginnering Symposium. 1435-1440 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Isao KOHZU: "Shaking table experiment on weak beam type stainless steel structure" Journal of Structural Engineering, Architectural Institute of Japan. Vol.41B(to appear). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 吹田啓一郎: "ステンレス鋼素材および高力ボルト接合部の履歴特性に関する高速載荷実験" 第9回日本地震工学シンポジウム(1994). 1435-1440 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 甲津功夫: "梁降伏型ステンレス架構の振動実験" 構造工学論文集. Vol.41B(掲載予定). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 福田昌圭: "ステンレス鋼素材及び高力ボルト接合部の高速繰返し載荷実験" 日本建築学会大会学術講演梗概集. 1183-1184 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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