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Development and Initial Planning of a New Type Structure for Ocean Space Utilization of Middle Water Professor

Research Project

Project/Area Number 63850092
Research Category

Grant-in-Aid for Developmental Scientific Research (B).

Allocation TypeSingle-year Grants
Research Field 船舶構造・建造
Research InstitutionThe University of Tokyo

Principal Investigator

YOSHIDA Koichiro  Univ. of Tokyo, Dept. of Naval Architecture & Ocean Engineering, 工学部, 教授 (90010694)

Co-Investigator(Kenkyū-buntansha) NAGAI Hideharu  Univ. of Tokyo, Dept. of Naval Architecture & Ocean Engineering Research Assista, 工学部, 助手 (20143399)
OKA Noriaki  Univ. of Tokyo, Dept. of Naval Architecture & Ocean Engineering Research Assista, 工学部, 助手 (80010891)
SUZUKI Hideyuki  Univ. of Tokyo, Dept. of Naval Architecture & Ocean Engineering Lecturer, 工学部, 講師 (00196859)
野本 敏治  東京大学, 工学部, 教授 (80011170)
深沢 塔一  東京大学, 工学部, 助教授 (80143171)
大坪 英臣  東京大学, 工学部, 教授 (20011132)
Project Period (FY) 1988 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥27,000,000 (Direct Cost: ¥27,000,000)
Fiscal Year 1990: ¥7,000,000 (Direct Cost: ¥7,000,000)
Fiscal Year 1989: ¥9,000,000 (Direct Cost: ¥9,000,000)
Fiscal Year 1988: ¥11,000,000 (Direct Cost: ¥11,000,000)
KeywordsMiddle Waters / Ocean Space Utilization / Ocean Business City Complex / Structural Engineering Feasibility / Semisubmersible Type / Ring Like Structure / Connection System / 半潜水式リング状構造体 / 初期構造設計 / 荷重推定 / 応答解析 / 支持機構 / 自然環境データ / フィージィビリティ
Research Abstract

Development and fundamental confirmation of structural engineering feasibility of ocean business city complex with population of 30,000 daytime people by using structures in middle waters of 30 to 70 m depth were aimed in this study. The site for construction of this business city complex is assumed to be laid off Tsu city in the Ise Bay. In order to produce the business space at this site, a semisubmersible type of ring-like structure with outer diameter of 1,000 m and inner diameter of 800 m was developed. This ring-like structure is fixed to the sea bed by using concrete supporting structures at the several points.
First of all, the meteorological data of the Ise Bay were collected and the maximum expected values were estimated statistically. The wind tunnel tests with a small scale model were carried out to evaluate wind and current forces. A 3D source distrubution method taking wave interaction effects into account was developed for wave force evaluation. The time history of accele … More ration of the E1 Centro earthquake was adopted to evaluate the earthquake responses.
The responses to wind and current forces were assumed to be stationary. On the other hand, the responses to wave forces and to earthquake waves were analyzed in the frequency domain and in the time domain, respectively. The results obtained from these response analysis were compared with the design criteria on stress and acceleration initially adopted and it was confirmed that the design proposed in this paper was feasible from the structural engineering view point.
In this design, a special type of mechanical connection system between the semisubmersible type of ring-like structure and the concrete supporting structure is adopted, which has such a function that both structures are almost rigidly connected in usual condition, while the connection is released in the severe earthquake case.
Finally, it was shown by optimization of the proposed structural system that the number of the supporting structures can be reduced to three. Less

Report

(4 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • 1988 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] 吉田 宏一郎: "中水深域空間利用構造体の開発ー半潜水式リング状構造体の検討ー" 日本造船学会論文集. 165. 203-213 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 具 滋三: "多数の三次元任意形状物体の相互干渉" 日本造船学会論文集. 165. 193-202 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 吉田 宏一郎: "多数の浮体で支持された長大な半潜水式構造体の波浪応答解折" 日本造船学会論文集. 166. 131-138 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Yoshida,K.: "A Concept for Creation of Business Space by Using Huge Ringlike Semisubmersibles" Pro.Fourth Pacific Corgress on Marine Science and Technology. II. 106-114 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Yoshida,K.: "A Numerical Method for Huge Semisubmersible Response in waves" Preprants of 1990 Annual Meeting of tho Soceitey of Novol Architects and Marine Engineers. 11-1-11-22 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Yoshida,K.: "A conceptuol Design of a Huge Ringーlike Semisubmersible" to be pnesented at the First International Workshop on Very Large Floating Structures. (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Yoshida, K. et al.: "Development of a New Type Structure for Ocean Space Utilization of Middle Water-Investigation of a Semisubmersible Type Ring-like Structure--" J. of the Society of Naval Architects of Japan. Vol. 165. 203-213 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Goo, Ja-Sam et al.: "Hydrodynamic Interaction between Multiple Three-dimensional Bodies of Arbitrary Shape in Waves" J. of the Society of Navel Architects of Japan. Vol. 165. 193-202 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Yoshida, K. et al: "Response Analysis of Huge Semisubmersible Type Structures Supported by a Large Number of Floating Bodies in Waves" J. of the Society of Navel Architects of Japan. Vol. 166. 131-138

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Yoshida, K. et al: "A Concept for Creation of Business Space by Using Huge Ring-like Semisubmersibles" Pro. Fourth Pacific Congress on Marine Science and Technology. Vol. II. (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Yoshida, K. et al: "A Numerical Method for Huge Semisubmersible Response in Waves" Presented at the Annual Meeting of Society of Naval Architects and Marine Engineers. 11-1 - 11-22

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Yoshida, K. et al: "A Conceptual Design of a Huge Ring-like Semisubmersible" First International Workshop on Very Large Floating Structures. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 吉田 宏一郎: "中水深域空間利用構造体の開発ー半潜水式リング状構造体の検討ー" 日本造船学会論文集. 165. 203-213 (1988)

    • Related Report
      1990 Annual Research Report
  • [Publications] 具 滋三: "多数の三次元任意形状物体間の相互干渉" 日本造船学会論文集. 165. 193-202 (1988)

    • Related Report
      1990 Annual Research Report
  • [Publications] 吉田 宏一郎: "多数の浮体で支持された長大な半潜水式構造体の波浪応答解析" 日本造船学会論文集. 166. 131-138 (1988)

    • Related Report
      1990 Annual Research Report
  • [Publications] Yoshida,K.: "A Concept for Creation of Business Space by Using Hcege Ringlike Semisubmersibles" Pro.Fourth Pacific Congness on Marine Science and Technology. II. 106-114 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Yoshida,K.: "A Numerical Method for Huge Semisuibuarsible Resporse in Waves" Preprinto of 1990 Annual Meefing of the Society of Naval Architects and Marine Engireers. 11-1-11-22 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Yoshida,K.: "A conceptual Design of a Huge Ringーlike semisubmersible" to be presented at the First Intervational Workshop on Very Large Floating Structures. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 吉田宏一郎,有馬俊明,岡徳昭: "中水深域空間利用構造体の開発" 日本造船学会論文集. 165. 203-213 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 吉田宏一郎,具滋三,岡徳昭: "多数の浮体で支持された長大な半潜水式構造体の波浪応答解析" 166. 131-138 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 吉田宏一郎: "海洋空間利用のための計画の考え方" 第9回海洋工学シンポジウム. 25-31 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 吉田宏一郎,有馬俊朗,岡徳昭: 日本造船学会論文集. 165. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 吉田宏一郎: 第9回海洋工学シンポジウム論文集. (1989)

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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