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ADVANCED EQUI-LINEARIZED TECHNIQUE FOR EARTHQUAKE RESPONSE ANALYSIS OF SOFT LAYERED GROUND

Research Project

Project/Area Number 07650543
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 構造工学・地震工学
Research InstitutionGIFU UNIVERSITY

Principal Investigator

SUGITO Masata  CIVIL ENGINEERING,GIFU UNIVERSITY PROFESSOR, 工学部, 教授 (60115863)

Co-Investigator(Kenkyū-buntansha) SAWADA Tsutomu  CIVIL ENGINEERING,TOKUSHIMA UNIVERSITY,PROFESSOR, 工学部, 教授 (20035645)
YASHIMA Atsushi  CIVIL ENGINEERING,GIFU UNIVERSITY ASSOC.PROFESSOR, 工学部, 助教授 (90144394)
OKA Fusao  CIVIL ENGINEERING,GIFU UNIVERSITY PROFESSOR, 工学部, 教授 (10111923)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1996: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1995: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsEarthquake response analysis / Equi-linearized technique / Multiple reflection theory / Ground motion amplification / Shear modulus and damping / 軟弱地盤 / ひずみ依存性 / 非線形増幅特性 / 地盤震動 / 応答解析 / 非線形増幅 / 地震動
Research Abstract

A method is developed for equi-linearized seismic response analysis of multi-layred ground including frequency dependent effect of shear modulus and damping on ground motion amplification. The frequency dependent equivalent strain in proportion to the Fourier amplitude of shear strain time history is defined for evaluation of shear modulus and damping factor depending on the frequency contents. The method is examined in the strong motion array records and minutely surveyed soil profile at array observation station located at very soft ground. Superiority of the present method to the conventional equi-linearized method is demonstrated especially in case of strong ground motion level and soft ground condition.
A comprehensive Fortran program for the proposed technique was completed, which can be used under the Windows 95 system.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 杉戸真太: "Analysis of Strong Motion Records from the South Hyogo Earchguake of January 17, 1995" Engineering Geology. 43. 85-106 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 杉戸真太: "レベル2地震を対象とした強震動の地域分布の相対評価" 土木学会中部支部学術講演会概要集. (印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 杉戸真太: "埋立地盤での鉛直アレー記録に基づく地震動増幅特性の検討" 第23回地盤工学研究発表会概要集. (印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Masata Sugito: "Analysis of Strong Motion Records from the South Hyogo Earthquake of January 17,1995" Engineering Geology. 43. 85-106 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Masata Sugito: "Strong Motion Distribution from the Hypothetical Level 2 Earthquake Fault" Proc. of Annual Symposium of JSCE. Chubu Branch. in printing (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Masata Sugito: "Ground Motion Amplification observed at Borehole Array Observation Systems in Recraimed Land" 23^<rd> Symposium of Japanese Geotechnical Society. in printing (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 杉戸真太: "Frequency-Dependent Equivalent Strain for Equi-Linearized Technique" Proc.of IS-Tokyo '95. 655-660 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] 杉戸真太: "Correction of Orientation Error of Borehole Strong Motion Array Records obtained during the South Hyogo Earthquake of Jan.17,1995" 土木学会論文集. Vol.12 No.3. 51-63 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 岡二三生: "Anarysis of Strong Motion Records from the South Hyogo Earthquake of January 17,1995" Engineering Geology. Vol.43. 85-106 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 杉戸真太: "GISの技術を取り入れた地震防災システムに関する基礎的検討" 第32回地盤工学研究発表会概要集. (印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 杉戸真太: "兵庫県南部地震における鉛直アレー強震記録に基づく地震動.非線形増幅特性と地盤震動解析法の検討" 阪神・淡路大震災に関する学術講演会論文集. 109-116 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 杉戸真太: "Correction of Orientation Error of Borehole Strong Motion Array Records Obtained During the South Hyogo Earthquake of Jan 17,1995." 土木学会論文集. Vol.12 No.3. 51-63 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 岡二三生: "大口径ラバル型サンドサンプラーの開発" 第31回地盤工学研究発表会論文集. (発表予定). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 八嶋厚: "鋼矢板工法の液状化 止効果について" 第7回中部支部地盤工学シンポジウム論文集. 1. 17-22 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 沢田勉: "A Localized Identification of Dynamic Soil Properties of Sub-Surface Layers in Ground by Veltical Array Records" Proc.of First Int.Conference on Earthquake Geotechnical Eugineering. 1. 493-498 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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