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

Fundamental Research on High Seismic Performance RC Piers with Unbonded Bars

Research Project

Project/Area Number 13450180
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 土木材料・力学一般
Research InstitutionKyoto University

Principal Investigator

IEMURA Hirokazu  Kyoto University, Engineering, Professor, 工学研究科, 教授 (10026362)

Co-Investigator(Kenkyū-buntansha) TAKAHASHI Yoshikazu  Kyoto University, Engineering, Research Assoc, 工学研究科, 助手 (10283623)
井上 晋  大阪工業大学, 工学部, 教授 (30168447)
IGARASHI Akira  Kyoto University, Engineering, Assoc.Professor, 工学研究科, 助教授 (80263101)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥14,900,000 (Direct Cost: ¥14,900,000)
Fiscal Year 2003: ¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 2002: ¥5,100,000 (Direct Cost: ¥5,100,000)
Fiscal Year 2001: ¥5,900,000 (Direct Cost: ¥5,900,000)
Keywordsunbonded bars / RC structure / cyclic loading tests / pseudodynamic tests / single column pier / rigid frame pier / post-yield stiffness / seismic design method / 鋼より線 / 付着剥離制御 / 二段階耐震設計法 / 合理的設計
Research Abstract

In this study, the UBRC structure was proposed as the high seismic performance structure in the next generation. And, the cyclic loading tests and the pseudodynamic tests were carried out in order to obtain the fundamental performance. Furthermore the analytical method for the UBRC structure was developed, and we carried out the parametric studies. From this study, the following results are obtained:
(1) By installing unbonded bars, it is possible to easily realize the RC structure with the stable post-yield stiffness. And the UBRC structure has small residual displacement in comparison with the conventional RC structure by the bar effect.
(2) The capacity of the energy dissipation is only depend on the amount of longitudinal reinforcement, and never change due to the installation of bars. That is to say, the optimal amount of longitudinal reinforcement for the UBRC structure is the equivalent to that of RC structure in order to expect the energy dissipation.
(3) From the results of the cyclic loading tests, it can be obtained the equivalent results to the principle got by installing the elastic member into RC structures. This structure can be realized only by installing unbonded bars into RC structure. Therefore this structure can be constructed with simple and easy construction works and low cost.
(4) In order to increase the post-yield stiffness, we have three method; Increase the bar ratio, Place bars outside and Shorten the bar length. By installing the gap at the anchor, the post-yield stiffness doesn't change. Changing these parameters, the various kind of the load -displacement hysteresis can be realized.
(5) In the pseudo dynamic tests it is also recognized the bars' effect (stable post-yield stiffness and the small residual deformation). Considering with the easy construction and the low construction cost, the UBRC structure has the high seismic performance.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] 家村浩和, 高橋良和: "二次剛性を利用した二段階耐震設計法の提案とUBRC橋脚への適用"地震工学論文集. No.27(CD-ROM). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 高橋良和, 家村浩和: "アンボンド芯材入りRC構造の解析モデルと芯材パラメータの影響"構造工学論文集. Vol.49A. 995-954 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 家村浩和, 高橋良和: "アンボンド芯材を活用した高耐震性RC橋脚の開発"土木学会論文集. Vol.I-60. 283-296 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 家村浩和, 高橋良和: "UBRC構造を用いた小規模断面橋脚の二段階耐震性能評価"第11回日本地震工学シンポジウム論文集. (CD-ROM). 1465-1470 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 家村浩和, 高橋良和: "ハイブリッド地震応答実験による高耐震化芯材を用いたRC橋脚の性能評価"第26回地震工学研究発表会講演論文集. 第2巻. 929-932 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 家村浩和, 高橋良和: "UBRC部材を用いた鉄道ラーメン高架橋の合理的耐震設計"第26回地震工学研究発表会講演論文集. 第2巻. 921-924 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Iemura, H., Takahashi, Y.: "Development of Two-Level Seismic Design using Post-Yield Stiffness and Application for UBRC Piers (in Japanese)"JSCE Journal of Earthquake Engineering. No.27. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Iemura, H., Takahashi, Y.: "Analytical model for Unbonded Bar Reinforced Concrete structure and influence of bar parameters on the structural characteristics (in Japanese)"JSCE Journal of Structural Engineering. Vol.49A. 995-954 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Iemura, H., Takahashi, Y.: "Innovation of High-Performance RC Structure with Unbonded Bars for Strong Earthquakes (in Japanese)"Journal of JSCE. Vol.I-60. 283-296 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Iemura, H., Takahashi, Y: "Two-level seismic design for UBRC piers with small section (in Japanese)"Proceedings of 11th Japan Earthquake Engineering Symposium. 1465-1470 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Iemura, H., Takahashi, Y.: "Pseudodynamic tests of RC piers with High strength unbonded bars (in Japanese)"Proceedings of 26th JSCE Earthquake Engineering Symposium. Vol.2. 929-932 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Iemura, H., Takahashi, Y.: "Rational Seismic Design for Railway Elevated Bridges using UBRC Members (in Japanese)"Proceedings of 26th JSCE Earthquake Engineering Symposium. Vol.2. 921-924 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 家村浩和, 高橋良和: "二次剛性を利用した二段階耐震設計法の提案とUBRC橋脚への適用"地震工学論文集. No.27(CD-ROM). (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 高橋良和, 家村浩和: "アンボンド芯材入りRC構造の解析モデルと芯材パラメータの影響"構造工学論文集. Vol.49A. 995-954 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 家村浩和, 高橋良和: "小規模断面を有するUBRC橋脚の二段階耐震性能評価"土木学会第58回年次学術講演会講演概要集. Vol.V. V-352 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 家村浩和, 高橋良和: "芯材に対するアンボンド処理の有無がUBRC橋脚の構造特性に及ぼす影響"土木学会第58回年次学術講演会講演概要集. Vol.V. V-351 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 家村浩和, 高橋良和, 曽我部直樹: "アンボンド芯材を活用した高耐震性能RC構造の開発"土木学会論文集. Vol.I-60No.710. 283-296 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 家村浩和, 高橋良和, 曽我部直樹, 鵜飼正裕: "UBRC構造を用いた小規模断面橋脚の二段階耐震性能評価"第11回日本地震学シンポジウム論文集. 1465-1470 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 家村浩和, 高橋良和, 曽我部直樹, 鵜飼正裕: "アンボンド高強度芯材による高耐震性能RC高橋脚の開発"第11回日本地震工学シンポジウム論文集. 1455-1460 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 中尾幸平, 家村浩和, 高橋良和, 曽我部直樹: "鋼より線を曲げ配置したUBRC橋脚の実験的検討"第57回土木学会年次学術講演会講演概要集. V-089 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 家村浩和ほか: "芯材の付着特性がUBRC橋脚の構造特性に及ぼす影響"第3回構造物の破壊過程解明に基づく地震防災向上に関するシンポジウム論文集. 201-206 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 家村浩和: "ハイブリッド地震応答実験による高耐震化芯材を用いたRC橋脚の性能評価"第26回地震工学研究発表会講演論文集. Vol.2. 929-932 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 家村浩和: "UBRC部材を用いた鉄道ラーメン高架橋の合理的耐震設計"第26回地震工学研究発表会講演論文集. Vol.2. 921-924 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 高橋良和: "オブジェクト指向構造解析システムの分析と設計"土木学会論文集. I-57/689. 301-320 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 井上 晋: "PR-Cはり部材の正負交番繰返し荷重下におけるせん断耐荷特性"第56回土木学会年次学術講演会講演概要集. V-442 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 家村浩和: "高耐震化芯材の付着特性がRC橋脚の弾塑性挙動に及ぼす影響"第56回土木学会年次学術講演会講演概要集. V-393 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 家村浩和: "高耐震化芯材の定着条件がRC橋脚の弾塑性挙動に及ぼす影響"平成13年度土木学会関西支部年次学術講演概要. V-27 (2001)

    • Related Report
      2001 Annual Research Report

URL: 

Published: 2001-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi