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Ground Motion of Subduction Earthquakes for Seismic Design

Research Project

Project/Area Number 05044089
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionJoint Research
Research InstitutionTokyo Institute of Technology

Principal Investigator

OHMACHI Tatsuo  Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology Professor, 大学院・総合理工学研究科, 教授 (90126269)

Co-Investigator(Kenkyū-buntansha) CRUZ Ernesto  Catholic University of Chile, 工学部, 助教授
RIDDELL Rafael  Catholic University of Chile, 工学部, 教授
MATSUOKA Masashi  Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of, 大学院・総合理工学研究科, 助手 (80242311)
TOSHINAWA Takumi  Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of, 大学院・総合理工学研究科, 助教授 (00188749)
MIDORIKAWA Saburoh  Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of, 大学院・総合理工学研究科, 教授 (00143652)
TOKIMATSU Kohji  Faculty of Engineering, Tokyo Institute of Technology, 工学部, 教授 (50134846)
ERREST Cruz  チリカトリカ大学, 工学部, 助教授
RAFAEL Ridde  チリカトリカ大学, 工学部, 教授
ERNESTO Cruz  チリカトリカ大学, 工学部, 助教授
Project Period (FY) 1993 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 1995: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1994: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1993: ¥3,000,000 (Direct Cost: ¥3,000,000)
KeywordsSeismic Design / Subduction Earthquake / Strong-motion Record / Source Effect / Site Effect / Database / Attenuation Relation / Microtremor / 応答スペクトル / S波速度 / 最大速度振幅 / アレイ微動測定
Research Abstract

1. Site investigation at strong-motion sites in the central part of Chile.
At 9 strong-motion sites where strong-motion records have been obtained in the 1985 Central Chile earthquake, microtremor array observations were conducted to estimate the shear-wave velocity profiles at the sites. The microtremors were also observed in Santiago where the strong-motion array have been developed. The results contributed to complete information about site characteristics at strong-motion sites in the central part of Chile.
2. Construction of strong-motion database
The database of the strong-motion records from Chilean and Japanese earthquakes were constructed. About 100 Chilean data and more than 500 Japanese data were compiled in the database. In the database, imformation about site characteristics of the strong-motion sites were also included.
3. Analysis of strong-motion records from subduction earthquakes
Ground motion parameters such as peak ground acceleration, velocity and response spectra were computed for strong-motion records in the database. The source, propagation path and site effects on the ground motion parameters were analyzed. The results indicate that (1) site effects are significant in longer periods, (2) the amplitude of ground motion increases with increase of the source depth, (3) earthquakes in the ocean plate tend to generate stronger seismic waves than those in the continental plate, and (4) attenuation of seismic waves from large earthquakes in the ocean plate is smaller.
4. Evaluation of ground motion characteristics from large subduction earthquakes
Empirical relationships for predicting peak acceleration and velocity were proposed in terms of earthquake magnitude, fault distance, source depth, and average shear-wave velocity of ground. It was also pointed out that ground motion from large subduction earthquakes is considered to have longer-period contents, smaller attenuation decay, and larger amplitudes from deeper events.

Report

(3 results)
  • 1995 Final Research Report Summary
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] Toshinawa,Matsuoka and Yamazaki: "Ground-motion characteristics in Santiago,,Chile,obtained by microtremor observations" Proc.11th World Conference on Earthquake Eng.(印刷中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Midorikawa,Si and Matsuoka: "Empirical analysis of peak horizontal velocity for the IIyogo-ken Nanbu,Japan earthquake of January 17,1995" Proc.11th World Conference on Earthquake Eng.(印刷中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Midorikawa,Si and Matsuoka: "Attenuation of peak horizontal acceleration and velocity observed during recent large earthquakes in Japan" Proc.International Workshop on Site Response Subjected to Strong Earthquake Motions. (印刷中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Ohmachi: "Preliminary review of Japanese seismic codes for civil structures" Proc.International Symposium Lessons Learned in Recent Earthquakes. 1. 41-48 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Riddell: "Comparison of response and energy spectra for severe earthquake motions" Proc.International Symposium Lessons Learned in Recent Earthquakes. 1. 248-275 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Toshinawa, Matsuoka and Yamazaki: "Ground-motion characteristics in Santiago, Chile, obtained by microtremor observations" Proc.11th World Conference on Earthquake Eng.(In Printing). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Midorikawa, Si and Matsuoka: "Empirical analysis of peak horizontal velocity for the Hyogo-ken Nanbu, Japan earthquake of January 17,1995" Proc.11th World Conference on Earthquake Eng.(In Printing). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Midorikawa, Si and Matsuoka: "Attenuation of peak horizontal acceleration and velocity observed during recent large earthquakes in Japan" Proc.International Workshop on Site Response Subjected to Strong Earthquake Motions. (In Printing). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Ohmachi: "Preliminary review of Japanese seismic codes for civil structures" Proc.International Symposium Lessons Learned in Recent Earthquakes. 1. 41-48 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Riddell: "Comparison of response and energy spectra for severe earthquake motions" Proc.International Symposium Lessons Learned in Recent Earthquakes. 1. 248-275 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] R.Riddell: "Effects of Soil Conditions on Inelastic Response Spectra" Proc.the Ninth Japan Earthq.Eng.Sympo.3. 145-150 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] R.Riddell: "Site-Dependent Inelastic Design Spectra" Proc.the Fifth U.S National Conf.on Earthq.Eng.3. 15-24 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Midorikawa,M.Matsuoka,K.Sakugawa: "Site Effects on Strong-Motion Records Observed during the 1987 Chiba-ken-toho-oki.Japan Earthquake" Proc.the Ninth Japan Earthq.Eng.Sympo.3. 85-90 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 時松孝次他: "短周期微動の水平鉛直振幅比と地盤特性の関係" 日本建築学会構造系論文報告集. 457. 11-18 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 大町達夫,年縄巧他: "常時微動の水平動と上下動のスペクトル比を用いる地盤固有周期推定の改良と適用" 土木学会論文集. 489. 251-260 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.MIDORIKAWA: "PRELIMINARY ANALYSIS FOR ATTENUATION OF PEAK GROUND VELOCITY ON STIFF SITE" Proc.of the International Workshop on Strong Motion Data. (in Printing). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] R.RIDDELL: "STRONG-MOTION RECORDING IN CHILE" Proc.of the International Workshop on Strong Motion Data. (in Printing). (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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