Development and Application of Form-Finding Method for Free-Form Reticulated Shell Structures with High Seismic Performance and Resource Saving

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04357
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 23010:Building structures and materials-related
• Research Institution: Nagoya City University
• Principal Investigator: Kimura Toshiaki 名古屋市立大学, 大学院芸術工学研究科, 准教授 (60816057)
• Co-Investigator(Kenkyū-buntansha): 青木 孝義 名古屋市立大学, 大学院芸術工学研究科, 教授 (10202467)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 構造最適化 / 鉄骨ラチスシェル屋根構造 / 下部構造 / 形状最適化 / 構造設計

Outline of Final Research Achievements

Novel methods for optimizing the geometry of a reticulated shell structure with constructability and the bracing arrangement of the support structure for seismic performance are proposed. The obtained shell is optimized by classifying the joint angle of the member (the articulated angle) of the reticulated shells. Further, in order to improve the seismic performance, the brace arrangement of the support structure is controlled through multi-objective optimization using the horizontal and vertical response values of the reticulated shell roof as the objective function. In addition, a design tool that can be used by young structural designers is created, and structural performance and constructability are verified using a mockup of the solution constructed using additive manufacturing.

Free Research Field

構造・材料

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は，複雑な形状についても初期段階で施工性を予め考慮して合理的に設計を行うことに寄与できると考えられる。特に省資源化を考慮するためには有効である。また，耐震性能を向上させる設計解を構造最適化技術で効果的に探索することにより，設計業務の効率化に貢献できる。