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2017 年度 実績報告書

ネパールカトマンズ盆地堆積層における2015年ゴルカ地震時地震動地盤応答解析

研究課題

研究課題/領域番号 17F17056
研究機関愛媛大学

研究代表者

N.P Bhandary  愛媛大学, 社会共創学部, 准教授 (10363251)

研究分担者 TIWARI RAM CHANDRA  愛媛大学, 社会共創学部, 外国人特別研究員
研究期間 (年度) 2017-04-26 – 2019-03-31
キーワードEarthquake / Ground Response Analysis / Kathmandu Valley / 2015 Nepal Earthquake / Spectral Element Method
研究実績の概要

This work is related with 3D seismic ground response analysis in Kathmandu valley during the Mw7.8 2015 Nepal Earthquake using Spectral Element Method. In this year, I was primarily involved in data collection, database building, research meetings, and ground modeling. So far, almost 40% of the research work has been completed and in next one year, I plan to complete the remaining work as well as do some additional work towards checking the reliability of the method developed in other similar areas. The following are some of the main research activities and achievements.
- Data collection and research discussions in Kathmandu in Sep-Oct 2017
- Ground damage survey in Kumamoto area in Jun and Sep 2017
- Presentations on an int'l conference and on a local conference
- Five manuscript preparation

現在までの達成度 (区分)
現在までの達成度 (区分)

2: おおむね順調に進展している

理由

As stated above in the summary of research achievements, I have completed nearly 40% of the research plan. In fact, I was planning to accomplish more than 50% in the first year of my research period, unexpected difficulties in borehole data collection has largely affected my work in the first half of this year. Moreover, the database preparation and precise ground model building have required a large part of my time, and finally I have come to complete the 90% of the 3D ground model building by the end of April 2018. As soon as the ground model is complete, I will run the SEM program to do the 3D ground response analysis using the available data of the 2015 Nepal Earthquake. So, in this sense, I think I have not been able to move as expected but from now onward, the work will speed up.

今後の研究の推進方策

As stated above, the work is slightly behind the schedule, but this can be well compensated by completing the ground model in next one month. As soon as the model is complete, different trials of ground response analyses will need another 2-3 months, and by the end of first half of the second year of my research period, I will be done with most of my planned work. However, the verification of the method developed will have to be checked for its reliability, so I plan to conduct the same analysis in a part of Japan where the reliability of secondary data is high. For example, I will use this method to do ground response analysis in Kumamoto area during the 2016 Kumamoto Earthquakes. Out of all this work, I plan to write at least 5 additional journal papers and publish them within 2018.

  • 研究成果

    (4件)

すべて 2018 2017

すべて 学会発表 (4件) (うち国際学会 2件)

  • [学会発表] Impact of soil-structure interaction on the response of structures with underground stories2018

    • 著者名/発表者名
      Bhandary, N. P., Tiwari, R. C. and Ryuichi, Y.
    • 学会等名
      地盤工学会・平成30年度地盤工学研究発表会
  • [学会発表] FEM-based Stability Analysis of Roadside Settlement Slopes in Epicentral Area of the 7.8Mw 2015 Gorkha Nepal Earthquake2017

    • 著者名/発表者名
      Tiwari, R. C., Bhandary, N. P., and Ryuichi, Y.
    • 学会等名
      2017年度地盤工学会四国支部研究発表会
  • [学会発表] Uncertainty to Explore Suspected Anomaly in the Main Impact Zone of Langtang Snow Avalanche2017

    • 著者名/発表者名
      Tiwari, R. C., Bhandary, N. P., and Ryuichi, Y.
    • 学会等名
      International Symposium on Geo-disaster Reduction, International Consortium on Geo-Disaster Reduction
    • 国際学会
  • [学会発表] FEM-based Slope Stability Analysis of Sindhupalchwok, Jure Landslide after 7.8Mw 2015 Gorkha earthquake2017

    • 著者名/発表者名
      Bhandary, N. P., Tiwari, R. C., and Ryuichi, Y.
    • 学会等名
      The 11th Asian Regional Conference of IAEG, November, 28-30, 2017, Kathmandu, Nepal Geological Society
    • 国際学会

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公開日: 2018-12-17  

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