Investigation of partially isolated structure

• Project/Area Number: 23560681
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/materials
• Research Institution: Tokyo City University
• Principal Investigator: NISHIMURA Isao 東京都市大学, 工学部, 教授 (60328929)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2013: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
• Keywords: 免震構造 / 非線形座屈 / 耐震構造 / 積層ゴム

Research Abstract

The recent data recorded on the event of Tohoku Earthquake in March 11, 2011 have been recognized as a shock to the society of civil engineers who have worked with application of damping augmentation project for tall buildings. Because the recorded data showed little damping effect in spite of the excellent performance expected from the pre-analytical prediction. This research investigated a new structural frame with damping devices along with laminated rubber bearings. Analytical research clarified the required specification of laminated rubber bearings that are quite different from the conventional base isolation bearings. Further research is necessary for realizing the device for partially isolated frame structure.

Research Products

• [Presentation] 限界耐力設計法に対応した免震構造の開発 （その１：開発概要） (2014)
  • Author(s): 西村功、鈴木敏史、豊嶋学、沼上清
  • Organizer: 日本建築学会
  • Place of Presentation: 神戸大学
• [Presentation] 限界耐力設計法に対応した免震構造の開発（その２：プロトタイプ積層ゴムの形状） (2014)
  • Author(s): 鈴木敏志、西村功、豊嶋学
  • Organizer: 日本建築学会
  • Place of Presentation: 神戸大学
• [Presentation] 限界耐力設計法に対応した免震構造の開発（その３：積層ゴム支承の基本特性試験） (2014)
  • Author(s): 菅野洸太、鈴木敏志、西村功
  • Organizer: 日本建築学会
  • Place of Presentation: 神戸大学
• [Presentation] Performance Evaluation of a Building Structure with Nonlinear Dampers under Strong Ground Motion on March 11, 2011 (2012)
  • Author(s): Isao Nishimura
  • Organizer: 14th US-Japan Workshop on Improvement of Structural Desing and Construction Practices
  • Place of Presentation: Maui, Hawaii
• [Presentation] The Structure Health Monitoring for Identifying the Damping Performance of Building Structures under Strong Ground Motion on March 11 in 2011 (2012)
  • Author(s): Isao Nishimura
  • Organizer: Fifteenth World Conference on Earthquake Engineering
  • Place of Presentation: Lisboa, Portugue
• [Presentation] Base Isolation of lightweight structure by laminated rubber bearings (2011)
  • Author(s): Isao Nishimura
  • Organizer: Structural Engineers World Congress
  • Place of Presentation: Como, Itally
• [Presentation] 中空孔寸法に着目した戸建免震構造用積層ゴム支承の性能評価 (2011)
  • Author(s): 水越一晃、鈴木敏志、西村功
  • Organizer: 日本建築学会年次大会
  • Place of Presentation: 東京 早稲田大学
• [Remarks] http://www.nishimura-lab.jp
• [Patent(Industrial Property Rights)] 部分免震構造 (2014)
  • Inventor(s): 西村功
  • Industrial Property Rights Holder: 学校法人五島育英会
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2014-243860
  • Filing Date: 2014-12-02