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Study on temporary investigation of bearing capacity and reinforce method of in-situ ground for prevention of overturning accidents of construction machineries.

Research Project

Project/Area Number 25750141
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Social systems engineering/Safety system
Research InstitutionNational Institute of Occupational Safety and Health, Japan

Principal Investigator

Hori Tomohito  独立行政法人労働安全衛生総合研究所, 建設安全研究グループ, 主任研究員 (20508634)

Co-Investigator(Renkei-kenkyūsha) TAMATE Satoshi  独立行政法人 労働者健康安全機構, 労働安全衛生総合研究所, 部長代理 (10344243)
Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords大型建設機械 / 敷鉄板 / 地盤の仮設補強 / 簡易地盤調査法 / 敷鉄板の敷設方法 / 地盤養生 / 変位速度依存性
Outline of Final Research Achievements

Drill rigs and mobile cranes are heavy machinery used in construction sites. Sufficient bearing capacity is required in the supporting ground to keep the machinery horizontal. However, overturning accidents frequently occur because of ground penetration at the foundations. This study set out to determine the optimum layout of a steel plate to prevent accidents involving the overturning of machinery. Loading tests using a 1/10-scale model of the steel plate were performed, to investigate the decrease in the pressure acting on the bearing ground. It was found that the reduction in the pressure acting on the ground differed depending on the positioning of the steel plate.
In addition, bearing capacity testing (BCT) method was newly developed. Several sets of BCT and PLT (existing methods) were conducted in various conditions of grounds to compare the results. It was ascertained that an almost identical relationship between loading stress and settlement are obtained from both the tests.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (8 results)

All 2016 2015 2014 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (5 results) Book (2 results)

  • [Journal Article] EXPERIMENTAL STUDY ON DISTRIBUTION OF ACTING PRESSURE ON BEARING GROUND THROUGH MODEL STEEL PLATES.2015

    • Author(s)
      堀智仁、玉手聡
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. F6 (Safety Problem)

      Volume: 71 Issue: 2 Pages: I_83-I_88

    • DOI

      10.2208/jscejsp.71.I_83

    • NAID

      130005123682

    • ISSN
      2185-6621
    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Presentation] 敷鉄板による地盤養生の面的評価に関する基礎的検討2016

    • Author(s)
      堀智仁、玉手聡
    • Organizer
      安全工学シンポジウム2016
    • Place of Presentation
      日本学術会議
    • Year and Date
      2016-07-07
    • Related Report
      2015 Annual Research Report
  • [Presentation] 建設現場の地盤養生に関する基礎的検討2016

    • Author(s)
      竹内一起、堀智仁、伊藤和也
    • Organizer
      第43回土木学会関東支部技術研究発表会
    • Place of Presentation
      東京都市大学世田谷キャンパス
    • Year and Date
      2016-03-14
    • Related Report
      2015 Annual Research Report
  • [Presentation] 平板載荷試験機を用いた支持力評価の迅速化に関する実験的検討2015

    • Author(s)
      堀智仁、玉手聡
    • Organizer
      第50回地盤工学研究発表会講演概要集
    • Place of Presentation
      岡山大学
    • Year and Date
      2015-09-13
    • Related Report
      2015 Annual Research Report
  • [Presentation] 敷鉄板による地盤養生に関する基礎的検討2014

    • Author(s)
      堀智仁,玉手聡
    • Organizer
      安全工学シンポジウム2014
    • Place of Presentation
      建築会館(東京)
    • Year and Date
      2014-07-10 – 2014-07-11
    • Related Report
      2014 Research-status Report
  • [Presentation] 敷板の敷設方法と建設機械の接地圧分散に関する基礎的研究

    • Author(s)
      堀 智仁、玉手 聡
    • Organizer
      第10回地盤工学会関東支部発表会(GeoKanto2013)
    • Place of Presentation
      東京
    • Related Report
      2013 Research-status Report
  • [Book] 平成26年度版建設業安全衛生年鑑2015

    • Author(s)
      堀智仁、玉手聡
    • Total Pages
      216
    • Publisher
      建設業労働災害防止協会
    • Related Report
      2015 Annual Research Report
  • [Book] 平成26年版建設業安全衛生年鑑2014

    • Author(s)
      堀智仁,玉手聡
    • Total Pages
      203
    • Publisher
      建設業労働災害防止協会
    • Related Report
      2014 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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