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A COMPREHENSIVE STUDY ON THE CONSTRUCTION OF MEGA-FLOATING ARTIFICIAL ISLANDS

Research Project

Project/Area Number 06302044
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section総合
Research Field 構造工学・地震工学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

WATANABE Eiichi  Kyoto University, Dept.of Civil Engineering, Professor, 工学研究科, 教授 (30026174)

Co-Investigator(Kenkyū-buntansha) FUNAKI Toshihiko  Osaka University, Dept.of Naval Architecture, Professor, 工学部, 教授 (90029174)
NAGAO Fumiaki  Tokushima University, Dept.of Civil Engineering, Assoc.Prof., 工学部, 助教授 (40172506)
KITAHARA Michihiro  Toaki University, Dept.of Ocean Engineering, Professor, 海洋学部, 教授
UTSUNOMIYA Tomoaki  Kyoto University, Dept.of Civil Engineering, Instructor, 工学研究科, 助手 (10211773)
UEDA Shigeru  Tottori University, Dept.of Civil Engineering, Professor, 工学部, 教授 (40261234)
Project Period (FY) 1994 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥9,000,000 (Direct Cost: ¥9,000,000)
Fiscal Year 1996: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1995: ¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 1994: ¥3,100,000 (Direct Cost: ¥3,100,000)
KeywordsVery Large Floating Structure / Floating Airport / Wind Force / Wave Response Analysis / Earthquake Response Analysis / Elastic Deformation
Research Abstract

This study aims at a comprehensive study on the construction of Mega-floating structure such as floating artificial islands. The size of the structure may be several kilo-meters, which may include floating airport.
Prof. Nagao studied on the wind resistant design of such a floating structure. In order to clarify it, he performed some experiments on the flat box-sectional models. It has been obtained that the wind force will be significantly affected by the close wind characteristics.
Prof. Kitahara analyzed the fluid-elastic foundation-porous ground system subjected to earthquake excitations. The method employed is the Boundary Element Method, and the three domains are separately modeled, and are combined at their boundaries. The numerical results have shown that the submergence of the foundation to the ground will be effective in terms of the reduction of ground stresses.
Prof. Funaki studied on large offshore structures moored by catenary lines, and the effect of the weight and stiffness of the catenary lines were examined. The nonlinear effect of the catenary lines are linearized based on the results of transient analysis by ABAQUS.
Prof.Ueda studied the floating structure consisting of rectangular and half-circular shapes, and the hydrodynamic forces (diffraction and radiation forces) were analyzed by the source distribution method. The floating bridges were also studied, and the effect of elasticity of the superstructure were examined.
Prof.Watanabe and Dr.Utsunomiya studied on the wave response analysis of large floating structure considering elastic deformation of the structure. The fluid and structural domains were both modeled by Finite Element Method, and the direct frequency method has been applied to wave response analysis. The HOBEM (Higher Order Boundary Element Method) program has also been developed, and the VLFS (very Large Floating Structure) has also been analyzed.

Report

(4 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • 1994 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] Tomoaki Utsunomiya: "Wave Response Analysis of a Flexible Floating Structure by BE-FE Combination Method" Proc. of the Fifth International Offshore and Polar Engineering Conference. 400-405 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 宇都宮智昭: "弾性変形を考慮した大型ポンツーン浮体の波浪応答特性について" 海岸工学論文集. 42. 961-965 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 渡邉英一: "大規模弾性浮体の固有振動解析" 構造工学論文集. 42A. 49-54 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Eiichi Watanabe: "Transient Response Analysis of a VLFS at Airplane Landing" Proc. International Workshop on VLFS. Paper No.47. (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 渡邉英一: "有限要素法による大型浮体の流力-弾性過渡応答解析" 構造工学論文集. 43A. 49-54 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 宇都宮智昭: "超大型箱形浮体の波浪応答解析のための高次要素BEMプログラムの開発" 海洋開発論文集. 13(印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Tomoaki Utsunomiya: "Wave Response Analysis of a Flexible Floating Structure by BE-FE Combination Method" Proc.of the Fifth Intemational Offshore and Polar Engineering Conference. 400-405 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Tomoaki Utsunomiya: "Wave Response of Large Pontoons considering Elastic Deformation" Proc.of Coastal Engineering, JSCE. Vol.42. 961-965 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Eiichi Watanabe: "Eigenvalue Analysis of Large-scale Flexible Floating structures" Journal of Structural Engineering. Vol.142A. 49-54 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Eiichi Watanabe: "Transient Response Analysis of a VLFS at Airplane Landing" Proc.International Workshop on VLFS. PaperNo.47. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Eiichi Watanabe: "Transient Hydroelastic Analysis of a Very Large Floating Structure by Finite Element Method" Journal of Structural Engineering. Vol.43A. 49-54 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Tomoaki Utsunomiya: "Development of Higher Order BEM Program for Wave Response Analysis of Very Large Floating Structures" Proc.of Civil Engineering in the Ocean. Vol.13. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 渡邊英一: "Transient Response Analysis of a VLFS at Airplane Landing" Proc.International Workshop on VLFS. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 宇都宮智昭: "超大型箱形浮体の波浪応答解析のための高次要素BEMプログラムの開発" 海洋開発論文集. 22. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 上田茂: "Behavior of Floating Bridge under Wind and Wave Action" Proc.International Workshop on VLFS. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.UItsunomiya: "Wave response analysis of a flexible floating structure by BE-FE combination method" Proc.5th Int.Offshore and Polar Eng.Conf.400-405 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 宇都宮智昭: "弾性変形を考慮した大型ポンツーン浮体の波浪応答特性について" 海岸工学論文集. 42. 961-965 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Utsunomiya: "Wave response analysis of a flexible floating structure by BE-FE combination method" Proc.ISOPE-95. (to be presented).

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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