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木村 俊明キムラ トシアキ

所属部署芸術工学研究科建築都市領域
職名講師
メールアドレス
ホームページURLhttps://structuraldesignlab.com/
生年月日
Last Updated :2020/07/02

研究者基本情報

基本情報

    科研費研究者番号:60816057

学歴

  • 2010年04月 - 2013年04月, 名古屋大学大学院, 環境学研究科
  • 2006年04月 - 2008年03月, 名古屋大学大学院, 環境学研究科

学位

  • 博士(工学), 名古屋大学

所属学協会

  • 日本機械学会
  • American Concrete Institute
  • 日本コンクリート工学会
  • International Association for Shell and Spatial Structures
  • 日本建築学会

委員歴

  •   2020年04月 - 現在, 日本建築学会, コンクリートシェル構造小委員会 幹事
  •   2020年04月 - 現在, 日本建築学会 構造最適化と協創小委員会 委員
  •   2019年04月 - 現在, ⽇本建築学会, 国際学術交流WG委員
  •   2015年04月 - 現在, 日本建築学会 構造形態創生小委員会, 委員

経歴

  •   2019年10月 - 現在, 名古屋市立大学大学院, 芸術工学研究科, 講師
  •   2017年10月 - 2019年09月, 京都大学, 工学研究科建築学専攻, 助教
  •   2008年04月 - 2017年09月, (株)佐々木睦朗構造計画研究所

研究活動情報

研究分野

  • 社会基盤(土木・建築・防災), 建築構造、材料

研究キーワード

    構造最適化, 構造形態創生, シェル・空間構造, 建築構造設計

論文

  • 鉄骨置屋根構造体育館の柱頭支承部応答低減のための下部構造最適化, 木村 俊明, 大崎 純, 佐藤 耕平, 日本建築学会構造系論文集, 85, (767) 61 - 71,   2020年01月,

     Fracture around the connections between the roof and the columns in the supporting wall of a long-span structure was reported as a key issue in the recent earthquake disasters in Japan. A school gymnasium needs highest-level seismic resistance, because it is used as a shelter when in the event of earthquake disaster. Especially for a lightweight steel roof supported by stiff RC structure, deformation concentrates around the connections. Accordingly, slip occurs at the pin/roller supports, and the steel members near the support exhibit plastic buckling and fracture. This kind of damage may be due to vibration of cantilever columns in the gable wall as reported in previous studies. Therefore, it can be prevented by designing the roof and supporting structure simultaneously so that a global vibration mode dominates against seismic motions. However, most of studies focused on the characteristics of seismic response of school gymnasium or the method for seismic design, and few studies have focused on the design to reduce the seismic response of the connections of the steel roof. The second author proposed an optimization approach to design of the supporting columns of a long-span arch to reduce the responses of the arch. It has been shown that flexibility rather than stiffness of the columns reduces the response of upper arch especially in the normal direction of the arch.

     In this study, we propose an optimization method for stiffness design of RC columns of a school gymnasium to reduce the interaction forces between the steel roof and supporting structure under seismic motions. The objective function is the maximum force at the connections, which is evaluated using the SRSS method for the seismic motions corresponding to the specified acceleration response spectrum. Constraints are given for the total weight and the interstory drift angles of columns. The sizes of columns are optimized using simulated annealing (SA).

     It is shown in the numerical examples that the maximum interaction force is drastically reduced to about half of the reference model through optimization. The property of optimal solution to reduce the interaction force is investigated in detail from the mode shapes, natural periods, and effective mass ratios. It is shown that the depths of the RC columns of the frame in the longitudinal direction increases while the depth of the columns in the transverse direction decreases. As a result, the shear stiffness of the longitudinal frame is increased, the vibration mode of the top of the frame in the transverse direction is suppressed, and the maximum shear force of the bearing is reduced. Furthermore, the accuracy of SRSS estimation is confirmed by the time-history analysis against 10 artificial ground motions compatible to the design response spectrum. It is shown that the maximum interaction forces of optimal solutions using SRSS method is smaller than the average of the time-history analysis due to the difference of the damping factor between the dominant mode and the target value for generating the artificial ground motions. Besides, the results of the time-history analysis also show that the maximum shear force of the bearing is reduced due to the suppression of the dominant vibration mode.

  • NURBS曲面モデルを用いた鉄筋コンクリート造の自由曲面屋根の施工プロセスと合理化, 林 盛, 山﨑 康造, 木村 俊明, 権藤 智之, 日本建築学会技術報告集, 25, (60) 935 - 940,   2019年06月,

    This paper reports the design and construction process of 3D curved reinforced concrete roof in a recent project. In design process, "base model" based on NURBS was used to make consensus on the shape between designers and contractors. In construction, it was utilized for high precision construction and rationalization.

  • 既存躯体との接触接合による耐震補強格子ブロック壁の形状最適化, 木村 俊明, 大崎 純, 山岡 祐貴, 日本建築学会構造系論文集, 84, (757) 385 - 391,   2019年03月,  Among various methods for seismic retrofit, installation of shear wall composed of light weight blocks to existing frame is an effective approach in view of reduction of construction cost because they can resist compression (contact to wall) only and complex anchoring and/or welding is not necessary. However, shape of block in practical design tends to be regular due to simplicity in manufacturing process. The second author developed a method of shape optimization of latticed blocks based on ground structure approach. Since a nonlinear programming approach is used, very thin lattice members existed in the optimal solutions. To prevent this difficulty, a combinatorial method has been presented for layout optimization of blocks with given pattern. In both studies, location of the node is fixed, and the latticed block is discretized into beam element.
     This paper presents a new method of shape optimization of a shear wall consisting of latticed blocks, where the lattice members are discretized into plane stress shell elements and the location of node and the width of diagonal elements of latticed blocks are adopted as design variables, respectively. In the first phase of proposed method, the geometry of lattice is optimized with fixed topology and width of lattice members. In the second phase, the width of lattice members are optimized with fixed topology and geometry. Each phase is repeated alternatively, and the members with small width are removed to change the topology before restarting the first phase. In each phase, an optimization problem is formulated to maximize the lateral reaction force for specified inter-story drift angle. Simulated Annealing (SA) is used for solving the optimization problem. Moreover, to obtain various shapes, force density method is utilized to move the nodes without modifying topology. In this approach, force density is treated as an auxiliary parameter for arrangement of latticed element.
     Numerical examples are presented to demonstrate effectiveness of the proposed method. In numerical examples, it can be confirmed that various kinds of optimal solution are obtained. And it is shown that a truss frame which each member is arranged diagonally for smooth stress transmission through optimization process. Optimal solutions can resist the shear force 1.09-1.34 times larger than that of the initial shape. By using this proposed method, it can be confirmed that optimal solution can be archived maximizing the lateral reaction force.
  • 鋼構造骨組のブレース配置と柱・梁断面の同時最適化, 木村俊明, 大崎 純, 岡崎 綾, 日本建築学会構造系論文集, 83, (752) 1445 - 1454,   2018年10月, 査読有り
  • Structural design of free-curved RC surface, Toshiaki Kimura, Mutsuro Sasaki, Proc. 12th Asian Pacific Conference on Shell and Spatial Structures, 421 - 426,   2018年
  • Shape and topology optimization of shear wall consisting of latticed blocks, T. Kimura, M. Ohsaki, Y. Yamaoka, Proceedings of IASS Symposium 2018,   2018年
  • Structural design of a seismic isolated building in Matsumoto city, Toshiaki Kimura, Yuki Nagai, Mutsuro Sasaki, IABSE Conference, Vancouver 2017: Engineering the Future - Report, 1297 - 1303,   2017年, © 2018 Ingenta. This paper reports under construction project of a seismic isolated building designed by Toyo Ito Architects and Associates. In the structural planning, for function maintenance of post-disaster, seismic isolation structure which is capital seismic isolation at basement floor has been adopted. All seismic isolators are on the capital of SRC and RC columns. By adopting capital seismic isolation at basement floor, the depth of the foundation can be made shallow and drilling cost is reduced. And for realization of open space, the upper is planned as steel rigid frame structure which CFT columns and H-section steel beams are utilized. First, this paper describes about the architectural plan. Next, structural planning with respect to mainly seismic isolation structure is explained. After explanation of the structural planning, the detail of the structural design (verification by using time history response analysis) is shown.
  • Structural design of the crematorium in Kawaguchi, T. Kimura, Y.Hiraiwa, M.Sasaki, Proceedings of IASS Symposium 2016,   2016年
  • Computational Morphogenesis of Free Formed Shells with Consideration of Structural Stability -Shape Optimization for Linear Buckling Load-, T. Kimura, H. Ohmori, WG12 & WG18 Colloquium: Bio-based and Bio-inspired Environmentally Compatible Structures,   2015年
  • 線形座屈荷重を目的関数とした形状最適化法の構築 構造安定性を考慮した自由曲面シェル構造の構造形態創生手法の提案(その1), 木村 俊明, 大森 博司, 日本建築学会構造系論文集, 78, (686) 733 - 733,   2013年04月
  • Shape Optimization of Free Formed Shells Considering Buckling, Proceedings of IASS Symposium 2012, H.Hayata, T. Kimura, H. Ohmori, Proceedings of IASS Symposium 2012,   2012年
  • 形状と厚さの同時最適化法の構造位相決定問題への応用 自由曲面シェル構造の構造形態創生手法の提案(その2), 木村 俊明, 大森 博司, 日本建築学会構造系論文集, 75, (648) 367 - 367,   2010年02月, The scheme of computational morphogenesis for the shell structures with free curved surface is proposed, where shape, distribution of thickness and topology can be simultaneously optimized. In the proposed scheme, distribution of thickness is discretized based on those values at each node, and Non Uniform Rational B-Spline (NURBS) is utilized by which the number of unknowns can be controlled while the high degree of freedom for expression of the shape of the curved surface and distribution of thickness are maintained. Moreover, the contour lines with respect to shell thickness over the shell surface are utilized by which topology of shell structures can be not only scraped but also grown up. By using this method, shell structure optimized with respect to not only shape and shell thickness but also topology can be obtained. The problem in question has been mathematically formulated as strain energy minimization problem of which coordinate of NURBS control point with respect to the shape of the curved surface and distribution of thickness are adopted as the design variables and numerical examples are presented where the effectiveness of the proposed scheme is investigated.
  • Computational Morphogenesis of Shells with Free Curved Surface through Optimization of Shape, Thickness and Topology, A. Maene, T. Kimura, H. Ohmori, Proceedings of IASS Symposium 2010, 133 - 134,   2010年
  • 形状と厚さの同時最適化法の定式化とその応用 自由曲面シェル構造の構造形態創生手法の提案(その1), 木村 俊明, 大森 博司, 日本建築学会構造系論文集, 74, (640) 1091 - 1091,   2009年06月, The scheme of computational morphogenesis for the shell structures with free curved surface is proposed, where shape and distribution of thickness can be simultaneously optimized. Generally, when nodal coordinates and shell thicknesses of finite element are adopted as design variables in structural optimization problem, computational cost generally becomes very large. In the proposed scheme, distribution of thickness is discretized according to the nodal points, and NURBS (Non Uniform Rational B-Spline) is utilized by which the number of unknowns can be controlled while the high degree of freedom for expression of the shape of the curved surface as well as the distribution of thickness are maintained. Consequently, the problem in question has been mathematically formulated as strain energy minimization problem where coordinates of NURBS control points with respect to both the shape of the curved surface and the distribution of thickness are adopted as design variables and numerical examples are presented where the effectiveness of the proposed scheme is investigated.
  • Computational Morphogenesis of Free Form Shells, H. Ohmori, T. Kimura, A. Maene, Proceedings of IASS Symposium 2009, 158 - 159,   2009年
  • Computational morphogenesis of free form shells, T. Kimura, H. Ohmori, Journal of the International Association for Shell and Spatial Structures, 49, (159) 175 - 180,   2008年12月, 査読有り, The scheme of computational morphogenesis for the shell structures with free curved surface is proposed, where not only the shape of shell surface but also the topology of the curved surface can be simultaneously obtained. For the topology optimization, the optimization process for the shell thickness is utilized, where the topology of the curved surface with a multi-connecting surface is dealt with as a limit of the case in which the shell thickness vanishes. For numerical expression for the configuration of the shells, NURBS (Non Uniform Rational B-Spline) is utilized, by which the number of unknowns can be effectively controlled while the high degree of freedom for the expression of the shape of shell surface as well as the shell thickness are maintained. Additionally, the contour line method which has been originally developed by the authors as the extension scheme for the topology optimization of elastic continuums is also introduced for the expression of the shell thickness distribution as well as the shell topology. In this paper, the fundamental formulation of the proposed scheme for the optimization problem for both the shape and the topology of the free form shell is shown, followed by the numerical examples which clearly show the effectiveness of the proposed method.
  • 設計者の選好と力学的合理性を勘案した自由曲面シェル構造の構造形態創生法の開発 : 設計事例による考察, 木村 俊明, 浜田 英明, 大森 博司, 構造工学論文集.B, 54B, (54) 281 - 288,   2008年03月25日, The scheme of computational morphogenesis for the shell structures with free curved surface is proposed, where the requirement on both the aesthetic aspect and the structural rationality can be simultaneously satisfied according to the judgment of the designer. In the proposed scheme, Non Uniform Rational B-Spline (NURBS) is utilized by which the number of unknowns can be controlled while the high degree of freedom for expression of the shape of the curved surface is maintained. For the scale index concerning with the aesthetic aspect, the degree of geometrical difference between the curved surfaces given by the designers and those given by computation has been adopted and, on the other hand, the strain energy of the structures has been adopted as the quantitative scale for the mechanical measurement. Consequently, the problem in question has been mathematically formulated as the multi-objective optimization problem, where the multi-objective genetic algorithms and the optimality condition are utilized for obtaining the Pareto solutions and numerical examples are presented where the effectiveness of the proposed scheme is investigated through the application to several shell structures actually planned.
  • Computational Morphogenesis of Free Form Shells Considering both Designer's Preference and Structural Rationality, T. Kimura, H. Ohmori, H.Hamada, Proc. of IASS 2007, 199 - 200,   2007年
  • Fundamental Studies on Numerical Approach to Homeostatic Model Technique, H. Ohmori, T. Kimura, Proceedings of IASS-APCS Symposium 2006, 516 - 517,   2006年

MISC

  • さがす建築:これからのフォーム・ファインディングの道標は何か, 木村俊明, 建築討論web043|202005|特集:構築と分解 終わり方から考える建築デザイン,   2020年05月
  • 20447 施工段階の制約を考慮したRC空間構造の構造最適化, 澄川 有矢, 木村 俊明, 大崎 純, 構造I, (2019) 893 - 894,   2019年07月20日
  • 20108 鉄骨置屋根構造体育館の地震時支承部反力低減のための下部RC架構の最適化, 佐藤 耕平, 木村 俊明, 大崎 純, 構造I, (2019) 215 - 216,   2019年07月20日
  • 20107 大型電波望遠鏡の鏡面形状誤差最小化のための支持架構の最適設計, 沈 旭, 大崎 純, 木村 俊明, 構造I, (2019) 213 - 214,   2019年07月20日
  • 20098 機械学習を用いた鋼構造骨組の最適ブレース配置の特徴抽出, 阪口 一真, 大崎 純, 木村 俊明, 構造I, (2019) 195 - 196,   2019年07月20日
  • Shape and topology optimization of shear wall consisting of latticed blocks for seismic retrofit of existing building and its prototype model using additive manufacturing, T. Kimura, M. Ohsaki, Proc. the Second International Conference on Simulation for Additive Manufacturing (Sim-AM 2019),   2019年
  • Shape optimization of masonry arch against static seismic loads, T. Kimura, S. Fujita, M. Ohsaki, T. Michels, S. Adriaenssens, Proc. IASS Annual Symposium 2019 -Structural Membranes 2019 Form and Force, Barcelona, Spain, Int. Assoc. Shell and Spatial Struct.,   2019年
  • 20192 既存躯体との接触接合による耐震補強ブロック壁の形状最適化, 山岡 祐貴, 大崎 純, 木村 俊明, 構造I, (2018) 383 - 384,   2018年07月20日
  • 20187 鉄骨置屋根構造体育館の柱頭支承部性能を考慮した最適設計, 大塚 陽汰, 大崎 純, 木村 俊明, 構造I, (2018) 373 - 374,   2018年07月20日
  • 20188 機械学習を用いた鋼構造骨組のブレース配置の性能予測と組合せ最適化, 田村 拓也, 大崎 純, 木村 俊明, 高木 次郎, 構造I, (2018) 375 - 376,   2018年07月20日
  • 免震装置のパラメータと上部骨組断面の同時最適化, 木村 俊明, 大崎 純, 日本建築学会近畿支部研究報告集. 構造系, (58) 237 - 240,   2018年06月23日
  • 21世紀の空間構造の現状と展望 第8回IASS2016東京シンポジウム報告(8), 吉中 進, 田村 淳一, 田川 浩之, 細見 亮太, 木村俊明, 鉄構技術, 31, (358) 23 - 27,   2018年03月
  • Machine Learning for Layout Optimization of Braces of Building Frames, M. Ohsaki, T. Tamura, J. Takagi, T. Kimura, Proceedings of ACSMO 2018,   2018年
  • Computational Morphogenesis of Free-form Shells through Optimization with Respect to Shape and Distribution of Thickness, T. Kimura, H. Ohmori, M. Ohsaki, Proceedings of ACSMO 2018,   2018年
  • なかまちテラス 小平市中町公民館・仲町図書館:透明でオープンな建築空間を実現させる構造体, 木村俊明, 佐々木睦朗, (783) 25 - 27,   2015年04月
  • 形状と厚さの同時最適化法の構造位相決定問題への応用 : 自由曲面シェル構造の構造形態創生手法の提案(その2)(2014年日本建築学会奨励賞), 木村 俊明, 建築雑誌, (1661) 85 - 85,   2014年08月20日
  • 特集 鉄骨造建築の柱材・柱形式:建築空間の立体的なつながりを作り出す架構, 木村俊明, 鉄構技術, 25, (295) 57 - 59,   2012年08月
  • 自由曲面シェル構造の構造形態創生に関する研究, 前根 文子, 大森 博司, 木村 俊明, 理論応用力学講演会 講演論文集, 59, (0) 21 - 21,   2010年
  • 20414 形状・厚さ・位相の同時最適化による自由曲面シェル構造の形態創生に関する研究 : 実構造物への適用(骨組の形態創生,構造I), 前根 文子, 木村 俊明, 大森 博司, 学術講演梗概集. B-1, 構造I, 荷重・信頼性,応用力学・構造解析,基礎構造,シェル・立体構造・膜構造, (2009) 827 - 828,   2009年07月20日
  • 形状・厚さ・位相の同時最適化による自由曲面シェル構造の形態創生に関する研究 (Tachira Club 計画案への適用), 前根文子, 木村俊明, 大森博司, コロキウム「構造形態の解析と創生」2009,   2009年
  • 20379 形状と厚み分布の同時決定による自由曲面シェル構造の構造形態創生に関する研究 : その1 同時最適化法の定式化とその適用例(連続体の形態創生,構造I), 田邉 昌基, 木村 俊明, 大森 博司, 学術講演梗概集. B-1, 構造I, 荷重・信頼性,応用力学・構造解析,基礎構造,シェル・立体構造・膜構造, (2008) 757 - 758,   2008年07月20日
  • 20380 自由曲面シェル構造の形状と厚み分布の同時決定による構造形態創生 : その2 構造位相決定問題への応用(連続体の形態創生,構造I), 木村 俊明, 田邉 昌基, 大森 博司, 学術講演梗概集. B-1, 構造I, 荷重・信頼性,応用力学・構造解析,基礎構造,シェル・立体構造・膜構造, (2008) 759 - 760,   2008年07月20日
  • 20381 ひずみエネルギー極小化された自由曲面シェル構造の座屈不安定性状(連続体の形態創生,構造I), 藤田 慎之輔, 大森 博司, 木村 俊明, 学術講演梗概集. B-1, 構造I, 荷重・信頼性,応用力学・構造解析,基礎構造,シェル・立体構造・膜構造, (2008) 761 - 762,   2008年07月20日
  • 形状と厚さの同時最適化法の構造位相決定問題への応用~自由曲面シェル構造の構造形態創生手法の提案~, 桜井克頼, 木村俊明, 大森博司, コロキウム「構造形態の解析と創生」2008,   2008年
  • アルミニウム押出形材の最適断面算出システムの開発, 田邉昌基, 木村俊明, 大森博司, 飯嶋俊比古, 上村和男, 松橋雅彦, コロキウム「構造形態の解析と創生」2008,   2008年
  • 自由曲面シェル構造の形態創生手法への構造安定性評価の導入, 藤田慎之輔, 大森博司, 木村俊明, コロキウム「構造形態の解析と創生」2008,   2008年
  • 20411 スプライン関数による自由曲面シェル構造の形態デザインに関する研究 : その3 既存の自由曲面シェル構造への適用(形態創生(1),構造I), 木村 俊明, 浜田 英明, 大森 博司, 学術講演梗概集. B-1, 構造I, 荷重・信頼性,応用力学・構造解析,基礎構造,シェル・立体構造・膜構造, (2007) 821 - 822,   2007年07月31日
  • 設計者の選好と力学的合理性を勘案した自由曲面シェル構造の構造形態創生法の開発, 木村 俊明, 浜田 英明, 大森 博司, 計算工学講演会論文集, 12, (1) 233 - 236,   2007年05月
  • 設計者の選好と力学的合理性を勘案する自由曲面シェル構造の構造形態創生法の開発, 木村俊明, 浜田英明, 大森博司, コロキウム「構造形態の解析と創生」講演論文集 2007,   2007年
  • 20350 ホメオスタシス法による曲面構造形態の創生に関する研究(形態創生 (1), 構造I), 木村 俊明, 大森 博司, 学術講演梗概集. B-1, 構造I, 荷重・信頼性,応用力学・構造解析,基礎構造,シェル・立体構造・膜構造, (2006) 699 - 700,   2006年07月31日

書籍等出版物

  • Recent Advances in Analysis, Design and Construction of Shell & Spatial Structures in the Asia-Pacific Region, Toshiaki Kimura, Mutsuro Sasaki, 分担執筆, Chapter 4. Structural design of free-curved RC surface – new crematorium in Kawaguchi, CRC Press,   2019年12月

受賞

  •   2015年06月, 前田工学賞
  •   2014年09月, 日本建築学会奨励賞
  •   2008年10月, The 6th IASS Hangai Prize

競争的資金

  • 鋼構造骨組と免震支承の性能設計と最適化のための詳細有限要素解析システムの開発, 日本学術振興会, 科学研究費助成事業 基盤研究(B),   2019年04月01日 - 2022年03月31日
  • 自由曲面シェル構造の形状決定支援ツールの開発とその応用, 科学研究費助成事業, 若手研究,   2018年04月 - 2021年03月
  • 機械学習と強化学習を用いた鋼構造物の優良解の特徴分析と最適化, 日本学術振興会, 科学研究費助成事業 挑戦的研究(萌芽),   2018年06月 - 2020年03月


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