• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Ultimate reasonable countermeasure for wall against earthquake

Research Project

Project/Area Number 19K15265
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 25030:Disaster prevention engineering-related
Research InstitutionTokai University

Principal Investigator

Fujiwara Kakuta  東海大学, 工学部, 助教 (40824925)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2020: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords地震 / 耐震 / 壁 / 構造物 / 液状化 / 岸壁 / 模型実験 / 安価 / 杭 / 空気袋 / 堤防 / 補強 / 安価材 / 被災 / 実験 / 解析
Outline of Research at the Start

地震から壁構造を守るため、「安価な」耐震構造を考案する。壁構造とは、住宅擁壁や港湾岸壁など「壁」であれば種類は問わない。これらの壁は、その背面の地盤が液状化した場合、壁への負担が大きくなり損傷が増大する。すなわち液状化を抑えることができれば壁は守られる。これまで、背面の地盤に杭を打って補強する工法が考案されており、効果は十分であるもののコスト面では課題は多い。より安価に同等の効果が発揮でき、かつ実用に資する材料を見出すことが、本研究の目的である。

Outline of Final Research Achievements

Two countermeasures ware proposed for reinforcement wall against earthquake reasonably. One is that piles with low rigidity are inserted in backfill ground. The other is that air packs are buried in backfill ground. The effectiveness for reduction of deformation of the wall could be found through several model tests. These countermeasures had advantage against relatively weak earthquake. Optimum position of these countermeasures in actual field should be discussed in the future. Furthermore, reasonable wall itself was also studied. In this study, embankment reinforcement by sheet-piles that has partially short piles was discussed.

Academic Significance and Societal Importance of the Research Achievements

地震による壁構造を損傷・崩壊を抑制するための、安価な工法を2つ(空気袋、弱い剛性の筒)提案した。いずれも相対的に弱い地震対して効果的であった。弱い地震は発生頻度が高いため、安価に数多くの小規模な損傷を防ぐことが期待できる。一方で、強い地震動については、構造物によっては損傷を許容するという考え方もある。重要施設や人命にかかるような構造物の場合、十分な費用を投じて対策を講じる必要がある。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (8 results)

All 2022 2021 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] スキマを有する壁構造による堤防液状化対策に関する実験2022

    • Author(s)
      藤原覚太、Enayat Mallyar
    • Journal Title

      令和3年度土木学会全国大会関東支部

      Volume: 3 Pages: 59-59

    • Related Report
      2021 Annual Research Report
  • [Journal Article] EXPERIMENTAL STUDY FOR RETAINING WALL USING PILE COUNTERMEASURE AGAINST EARTHQUAKE2021

    • Author(s)
      Enayat Mallyar, Kakuta Fujiwara
    • Journal Title

      The Disaster Management 2021

      Volume: Volume 207 Pages: 225-232

    • DOI

      10.2495/dman210181

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 3-D NUMERICAL ANALYSIS OF PARTIAL FLOATING SHEET-PILE METHOD AS COUNTERMEASURE FOR LIQUEFACTION2021

    • Author(s)
      Kakuta Fujiwara, Kentaro Nakai, Nanase Ogawa
    • Journal Title

      Journal of JSCE

      Volume: 9 Issue: 1 Pages: 138-147

    • DOI

      10.2208/journalofjsce.9.1_138

    • NAID

      130008000751

    • ISSN
      2187-5103
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] スキマを有する壁構造による堤防液状化対策に関する実験2022

    • Author(s)
      藤原覚太、Enayat Mallyar
    • Organizer
      令和3年度土木学会全国大会関東支部
    • Related Report
      2021 Annual Research Report
  • [Presentation] EXPERIMENTAL STUDY FOR RETAINING WALL USING PILE COUNTERMEASURE AGAINST EARTHQUAKE2021

    • Author(s)
      Enayat Mallyar, Kakuta Fujiwara
    • Organizer
      Disaster Management 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Experimental study on air pack countermeasure for quay wall against liquefaction2020

    • Author(s)
      Enayat Mallyar
    • Organizer
      GeoKanto2020
    • Related Report
      2020 Research-status Report
  • [Presentation] スキマを開けて設置した矢板の堤防液状化対策の実験的研究2020

    • Author(s)
      藤原覚太
    • Organizer
      土木学会全国大会第75回年次学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Numerical study on pile countermeasure against liquefaction behind retaining wall2019

    • Author(s)
      Kakuta Fujiwara
    • Organizer
      ISOPE2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi