A study on the performance of GRS integral bridge against tsunami

• Project/Area Number: 26820193
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Geotechnical engineering
• Research Institution: National Agriculture and Food Research Organization
• Principal Investigator: KAWABE Shohei 国立研究開発法人農業・食品産業技術総合研究機構, 農村工学研究部門・施設工学研究領域, 研究員 (30609384)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: ジオシンセティックス / 補強土 / 一体橋梁 / 津波 / 水平載荷 / 安定性

Outline of Final Research Achievements

The girders of a number of bridges were damaged by the great tsunami of the 2011 Great East Japan Earthquake. Many of the bridges close to coastal lines are required to have high resistance against not only seismic load but also tsunami load. In this study, the stability against tsunami load of the geosynthetics-reinforced soil integral bridge was studied experimentally, and the followings were shown. The geosynthetics-reinforced soil integral bridge has high performance for the tsunami thanks to that the girder, the abutments and the approach fill are structurally integrated to each other. The lateral load acting on the abutment is resisted by the friction between the abutment and approach fill. And geosynthetics are effective in increase that friction.

Research Products

• [Journal Article] 津波横荷重を受けるGRS一体橋梁橋台の室内静的水平載荷実験 (2015)
  • Author(s): 川邉翔平，深津圭佑
  • Journal Title: ジオシンセティックス論文集 Volume: 30 Pages: 59-66
  • NAID: 130005165164
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] ジオグリッドの面内せん断試験と補強土壁水平載荷試験結果の再現計算 (2016)
  • Author(s): 川邉翔平
  • Organizer: 土木学会平成28年度全国大会第71回年次学術講演会
  • Place of Presentation: 東北大学川内北キャンパス(宮城県・仙台市)
  • Year and Date: 2016-09-07
• [Presentation] Model tests on the stability of GRS integral bridge against tsunami load (2015)
  • Author(s): 川邉翔平，菊池喜昭，渡辺健治，龍岡文夫
  • Organizer: The 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering
  • Place of Presentation: 福岡国際会議場(福岡県・福岡市)
  • Year and Date: 2015-11-09
  • Int'l Joint Research
• [Presentation] ジオシンセティックス補強土一体橋梁橋台の水平載荷試験 (2015)
  • Author(s): 川邉翔平,深津圭佑
  • Organizer: 土木学会全国大会第70回年次学術講演会
  • Place of Presentation: 岡山大学（岡山県・岡山市）
  • Year and Date: 2015-09-16 – 2015-09-18
• [Presentation] ジオシンセティックス補強土一体橋梁橋台の水平載荷試験 (2015)
  • Author(s): 川邉翔平，深津圭佑
  • Organizer: 土木学会平成27年度全国大会第70回年次学術講演会
  • Place of Presentation: 岡山大学津島キャンパス(岡山県・岡山市)
  • Year and Date: 2015-09-16
• [Presentation] Evaluation of resistance of GRS coastal dikes against over-flowing tsunami current by model tests (2014)
  • Author(s): 青柳悠大,藤井公博,川邉翔平,菊池喜昭,渡辺健治,飯島正敏,龍岡文夫
  • Organizer: Proceedings of The 13th International Symposium on New Technologies for Urban Safety of Mega Cities in Asia
  • Place of Presentation: Yangon(Myanmar)
  • Year and Date: 2014-11-03 – 2014-11-05
• [Presentation] 津波波力を受けるジオシンセティックス補強土一体橋梁の橋台に着目した模型実験 (2014)
  • Author(s): 川邉翔平,山口晋平,古川大祐,青柳悠大,菊池喜昭,龍岡文夫,渡辺健治
  • Organizer: 第49 回地盤工学研究発表会
  • Place of Presentation: 北九州国際会議場(福岡県・北九州市)
  • Year and Date: 2014-07-15 – 2014-07-17
• [Presentation] ジオシンセティックス一体橋梁の津波に対する挙動の実験的検討 (2014)
  • Author(s): 山口晋平,古川大祐,青柳悠大,川邉翔平,菊池喜昭,龍岡文夫,渡辺健治
  • Organizer: 第49 回地盤工学研究発表会
  • Place of Presentation: 北九州国際会議場(福岡県・北九州市)
  • Year and Date: 2014-07-15 – 2014-07-17
• [Presentation] 津波越流に対するGRS一体橋梁の安定性の検討 (2014)
  • Author(s): 山口晋平,川邉翔平,渡辺健治,菊池喜昭,二瓶泰雄,龍岡文夫
  • Organizer: 地盤工学会特別シンポジウム-東日本大震災を乗り越えて-
  • Place of Presentation: 東京電機大学(東京都・足立区)
  • Year and Date: 2014-05-14 – 2014-05-15