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DEVELOPMENT OF SYSTEM FOR EVAUATING SEISMIC GROUDA MOTION AND HAZARD IN IRREGULARLY STRATEFIED LAYER BASED ON MICROTREMOR MEASUREMENTS

Research Project

Project/Area Number 12555158
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Building structures/materials
Research InstitutionTOKYO INSTITUTE OF TECHNOLOGY

Principal Investigator

TOKIMATSU Kohji  Professor, Faculty of Engineering, Tokyo Institute of Technology, 大学院・理工学研究科, 教授 (50134846)

Co-Investigator(Kenkyū-buntansha) ARAI Hiroshi  Research Engineer, Structural Performance Team, Earthquake Disaster Mitigation Research Center, NIED, 地震防災フロンティアセンター, 研究員 (40302947)
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥10,500,000 (Direct Cost: ¥10,500,000)
Fiscal Year 2002: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2001: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2000: ¥5,800,000 (Direct Cost: ¥5,800,000)
KeywordsMicrotremors / H / V Ratio / Shear wave velocity profile / Earthquake / Array observation / Rayleigh waves / Dispersion curve / Dynamic response characteristics
Research Abstract

The object of this study is to develop a method for estimating shear wave velocity structures as well as ground motions and resulting hazards in the area involving irregularly stratified deposits, based on microtremor measurements using either array of sensors or a single sensor, or a combination of both. For this purpose, (l)data acquisition system is developed for extracting surface wave characteristics (I.e., dispersion data and H/V spectra) in microtremors ; (2) analysis method is developed to estimate one and two-dimensional shear wave velocity profiles based on the inversion of either microtremor dispersion data or H/V spectra, or both ; (3) microtremor measurements are conducted at several arias where shear wave velocity is known and the effectiveness of the proposed method is examined ; (4) strong motion array observation is also conducted in one of the areas to characterize spatial variation in ground motions across irregularly stratified deposits ; (5) two-dimensional dynamic … More response analysis is conducted to evaluate ground motion characteristics in the area and to compare with the observed records; and (6) the effects of surface geology on building damage is examined at the areas of building damage during recent strong earthquakes, based on the proposed method and analysis.
It is shown that
(1) The one- and two-dimensional shear wave velocities determined by microtremor measurements using either array of sensors or a single sensor, or a combination of both, are consistent with available geological information, indicating that the proposed method is effective in geophysical exploreation.
(2) The two-dimensional dynamic response analysis can simulate reasonably well the observed spatial variation of ground motions, indicating that the proposed method is also effective in site response evaluation.
(3) The spatial variation of ground motions and building damage during recent earthquakes are strongly affected by the effects of surface geology and can readily be estimated by the proposed method. Less

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] 時松孝次: "微動観測から推定した台湾集集地震強震観測点の表層S波速度構造とその建物被害への影響"日本建築学会構造系論文集. 550. 65-70 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Tokimatsu: "Shallow Vs Profiles and Site Effects Estimated From Microtremor Measurements at Selected Strong Motion Stations in Taiwan"International Workshop on Annual Commemoration of Chi-Chi Earthquake. 3. 263-272 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Tokimatsu: "Site Effects Estimated From Microtremor Measurements at Selected Strong Motion Stations in Taiwan"4th International Conf.On Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. No.3・31(CD-ROM). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 中島俊介: "微動および地震動のアレイ観測に基づく不整形地盤の地震動特性評価"第37回地盤工学研究発表会. 2099-2100 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 岩崎和明: "トルコ・コジャエリ地震において建物振動被害に与えた地盤特性の影響"第37回地盤工学研究発表会. 1841-1842 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Tokimatsu: "Evaluation of Site Effects on Building Damage in the 1999 Chi-Chi Earthquake Based on Microtremor Measurements"Proceedings of the Fourth Forum on Implications of Recent Earthquakes on Seismic Risk. 73-83 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kohji Tokimatsu: "Shallow Shear-Wave Structure and Its Effects on Building Damage at Strong Motion Stations in Taiwan Based on Microtremor Measurements"J. Struct. Constr. Eng., AIJ. No550. 65-70 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kohji Tokimatsu: "Shallow Vs Profiles and Site Effects Estimated From Microtremor Measurements at Selected Strong Motion Stations in Taiwan"International Workshop on Annual Commemoration of Chi-Chi Earthquake. 3. 263-272 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kohji Tokimatsu: "Site Effects Estimated From at Selected Strong Motion Advances in Geotechnical Stations in Taiwan"4^<th> International Conf. On Recent Earthquake and Soil Dynamics. No.3. 31. 31 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shunsuke Nakajima: "Estimation of Ground Motion Characteristics of Irregularly Layered Soils Baased on Microtremor and Earthquake Array Observations"Proceedings of The 37 Japan National Conference on Geotechnical Engineering. 2099-2100 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kazuaki Iwasaki: "Effects of Ground Characteristics on Damage of Structures by Vibration During the 1999 Kocaeli, Turkey Earthquake"Proceedings of The 37 Japan National Conference on Geotechnical. 1841-1842 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kohji Tokimatsu: "Evaluation of Site Effects on Building Damage in The 1999 Chi-Chi Earthquake Based on Microtremor Measurements"Proceedings of The Fourth Forum on Implications of Recent Earthquakes on Seismic Risk. 73-83 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kohji Tokimatsu: "Evaluation of Site Effects on Building Damage in the 1999 Chi-Chi Earthquake Based on Microtremor Measurements"Proceedings of the Fourth Forum on Implications of Recent Earthquakes on Seismic Risk. 73-83 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 中島 俊介: "微動および地震動のアレイ観測に基づく不整形地盤の地震動特性評価"第37回地盤工学研究発表会. 2099-2100 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 岩崎 和明: "トルコ・コジャエリ地震において建物振動被害に与えた地盤特性の影響"第37回地盤工学研究発表会. 1841-1842 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 岩崎 和明: "コーン貫入試験結果に基づく液状化に伴う直接基礎建物沈下量の推定"日本建築学会大会学術講演梗概集. 429-430 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 時松孝次: "微動観測から推定した台湾集集地震強震観測点の表層S波速度構造とその建物被害への影響"日本建築学会構造系論文集. 550. 65-70 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Kohji Tokimatsu: "Site Effects Estimated From Microtremor Measurements at Selected Strong Motion Stations in Taiwan"Proc., 4th International Conf. on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. (CD-ROM). 8pp (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 中島俊介: "台湾集集地震における建物被害に与えた表層地盤増幅特性の影響"日本建築学会大会学術講演梗概集. 773-774 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 中島俊介: "微動および地震動のアレイ観測に基づく不撃形地盤の地震動特性評価"第37回地盤工学研究発表会. (発表予定). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 岩崎和明: "トルコ・コジャエリ地震において建物振動被害に与えた地盤特性の影響"第37回地盤工学研究発表会. (発表予定). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 中島俊介: "微動H/Vスペクトルに基づく地震動の空間的変化の評価"日本建築学会大会学術講演会. 235-236 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kohji TOKIMATSU: "Shallow Vs Profiles and Site Effects Estimated From Microtrmor Measurements at Selected Strong Motion Stations In Taiwan"Proc.International Workshop on Annual Commemoration of Chi-Chi Earthquake. 263-272 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 関口徹: "微動観測から推定した台湾集集地震強震観測点の表層地震増幅特性"第36回地盤工学研究発表会. (発表予定). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kohji TOKIMATSU: "Site Effects Estimated From Microtremor Measurements at Selected Strong Motion Stations In Taiwan."4^<th> International Conference on Recent Advances In Geotechnical Earthquake Engineering and Soil Dynamics. (発表予定). (2001)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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