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

Design and prototype of cantilever-type module bridge based on shape optimization approach

Research Project

Project/Area Number 18K18888
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 22:Civil engineering and related fields
Research InstitutionTohoku Gakuin University

Principal Investigator

Nakazawa Masatoshi  東北学院大学, 工学部, 教授 (20198063)

Co-Investigator(Kenkyū-buntansha) 近広 雄希  信州大学, 学術研究院工学系, 助教 (10778905)
有尾 一郎  広島大学, 先進理工系科学研究科(工), 助教 (50249827)
Project Period (FY) 2018-06-29 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsトポロジー最適化 / カンチレバー橋 / 周期性構造 / 基本モジュール / 寸法最適化 / 試作 / 周期性構造物 / 3DCAD / 3Dプリンター / 単位モジュール / 緊急橋 / 形状最適化アプローチ / カンチレバー形式 / ポンツーン
Outline of Final Research Achievements

We can get a optimum structure of X-shaped configuration analogous to Forth Railway Bridge, by carrying out the topology optimization analysis for trapezoidal region modelling the cantilever.
Next, by summarizing the results of parametric analysis for optimum shape of simply-supported beam isolated from periodic structure, we can propose two types of fundamental module. Moreover, shape optimization analysis is carried out for T-shaped elements which compose the fundamental module and is suitable for the connectivity between modules. As a results, 2 types of prototype model which have constant and variable cross section in the longitudinal beam direction can be designed. Finally, prototype of fundamental module is produced by 3D Printer.

Academic Significance and Societal Importance of the Research Achievements

周期性構造の場合、発生する断面力および応力度分布も周期性を有するが、トポロジー最適化理論による最適構造も周期性を有するのかという学術的命題でもあった。結果として、最適形状もほぼ周期性を示すが、予想されたように異なる新しい形状も得ることができた。
基本モジュールを模した単純ばりの最適形状に関するパラメトリック解析より、単純ばりの2次元最適形状の特性が得られたことは、実橋形式との相関の観点から技術的意義が大きい。また、この結果より基本モジュールを構成する2つの基本モジュールを作成したが、これらは横方向に1/4周期ずれた形状で関連性もあることより、学術的意義も認められる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (13 results)

All 2021 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (10 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Topological optimum shape of a fundamental module of the periodic structure and cantilever bridge2021

    • Author(s)
      中沢正利・近広雄希・有尾一郎
    • Journal Title

      Journal of Structural Engineering, A

      Volume: 67A Issue: 0 Pages: 90-98

    • DOI

      10.11532/structcivil.67A.90

    • NAID

      130008026033

    • ISSN
      1881-820X
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of multiple bifurcation behaviour for periodic structures2020

    • Author(s)
      I.Ario and M.Nakazawa
    • Journal Title

      Archives of Mechanics

      Volume: 72 Pages: 283-306

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural analysis of a scissor structure2020

    • Author(s)
      I.Ario, T.Yamashita, Y.Chikahiro, M.Nakazawa, K.Fedor, C.Graczykowski and P.Pawlowski
    • Journal Title

      BULLETIN OF THE POLISH ACADEMY OF SCIENCES TECHNICAL SCIENCES

      Volume: 68 Pages: 1319-1332

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 架設橋を構成する基本モジュール試作のための設計方法2021

    • Author(s)
      中沢正利
    • Organizer
      令和2年度土木学会東北支部技術研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 一軸引張荷重を受けるモジュール橋のピン接合部の継手強度2021

    • Author(s)
      小池 悠、近広雄希、中沢正利、有尾一郎
    • Organizer
      令和2年度土木学会中部支部研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 架設橋を構成する基本モジュールの最適構造2020

    • Author(s)
      中沢正利
    • Organizer
      令和元年度土木学会東北支部技術研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] パネル橋を構成する基本モジュールの最適構造について2020

    • Author(s)
      中沢正利,有尾一郎,近広雄希
    • Organizer
      令和2年度土木学会全国大会第75回年次学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 周期性構造橋梁のトポロジー最適化解析2019

    • Author(s)
      中沢正利・近広雄希・有尾一郎
    • Organizer
      土木学会2019年度全国大会 第74回年次学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Longest Scissors Type of Deployable Bridge using Topology Optimizaton by Microtruss Model2019

    • Author(s)
      Y.Yokotani, I.Ario, Y.Chikahiro and M.Nakazawa
    • Organizer
      9th International Conference on Steel and Aluminium Structures(ICSAS19)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Optimal Design of Large-span Bridges2019

    • Author(s)
      I.Ario, Y.Yokotani, Y.Chikahiro and M.Nakazawa
    • Organizer
      9th International Conference on Steel and Aluminium Structures(ICSAS19)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Smart Bridge Developing Based on Micro-Truss Optimization Method2019

    • Author(s)
      Y.Yokotani, I.Ario, Y.Chikahiro and M.Nakazawa
    • Organizer
      IX ECCOMAS Thematic Conference on Smart Structures and Materials(SMART2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analysis of Multiple Bifurcation Behavior for Periodic Structures2019

    • Author(s)
      Ario,I. and Nakazawa,M.
    • Organizer
      Proc. of 4th Polish Congress of Mechanics and 23rd International Conference on Computer Methods in Mechanics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 架設橋のトポロジー最適化解2019

    • Author(s)
      中沢 正利
    • Organizer
      土木学会東北支部技術研究発表会
    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-07-25   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi