Development of Monte-Carlo simulation method for structural collapse

2009 Fiscal Year Self-evaluation Report

• Project/Area Number: 19360200
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: The University of Tokyo
• Principal Investigator: OGUNI Kenji The University of Tokyo, 理工学部, 准教授 (20323652)
• Project Period (FY): 2007 – 2009
• Keywords: 破壊現象 / PDS-FEM / RC構造物 / 崩壊過程 / 確率挙動

Research Abstract

本研究では,地震動を受ける構造物が,健全な状態(弾性変形)から塑性変形,終局限界状態を経て崩壊に至る一連の過程をばらつきも含めて予測可能な解析手法を提案する.具体的には
(1)破壊現象に適した解析手法,PDS-FEMを三次元動的弾塑性解析ツールとして整備
(2)並列化による計算効率の向上
(3)崩壊に至る過程のモンテカルロ・シミュレーション
を行う.また,構造物の大規模な震動台(E-ディフェンスなど)実験の際に展開し,計算結果を検証のための計測装置として,時刻同期稠密機動センサネットワークを開発する.

Research Products

• [Journal Article] Crack propagation analysis using PDS-FEM and comparison with fracture experiment. (2009)
  • Author(s): Kenji Oguni, M.L.L.Wijerathne, Tomoo Okinaka, Muneo Hori
  • Journal Title: Mechanics of Materials 41 Pages: 1242-1252
  • Peer Reviewed
• [Journal Article] Numerical analysis of growing crack problems using particle discretization scheme. (2009)
  • Author(s): M.L.L.Wijerathne, K. Oguni, M. Hori
  • Journal Title: International Journal for Numerical Methods in Engineering 10 Pages: DOI : 10.1001/nme.2620
  • Peer Reviewed
• [Journal Article] 超高速ビデオカメラとX-FEMを用いた平行亀裂の進展経路に関する基礎的研究 (2009)
  • Author(s): 沖中知雄, 堀宗朗, 小国健二
  • Journal Title: 土木学会論文集 65, 2 Pages: 321-334
  • Peer Reviewed
• [Journal Article] Quasi-static analysis of strike fault growth in layered media. (2008)
  • Author(s): N. Kame, S. Saito, K. Oguni
  • Journal Title: Geophysics Journal International 173 Pages: 309-314
  • Peer Reviewed
• [Journal Article] Hierarchical Localization of Sensor Network for Infrastructure Monitoring. (2008)
  • Author(s): M. Saeki, K. Oguni, J. Inoue, M. Hori
  • Journal Title: Journal of Infrastructure Systems 14.1 Pages: 15-26
  • Peer Reviewed
• [Presentation] 3D-FEM-beta: an efficient numerical method for modeling 3D fracture. (2007)
  • Author(s): M.L.L. Wijerathne, H. Sakaguchi, K. Oguni, M. Hori
  • Organizer: ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
  • Year and Date: 20070000
• [Book] いまさら聞けない計算力学の常識(社団法人 土木学会 応用力学委員会 計算力学章委員会 編) (2008)
  • Author(s): 共著, 小国健二
  • Total Pages: 155-164
  • Publisher: 丸善