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Evaluation of Seismic Capacity of Existing Reinforced Concrete Structures in Turkey

Research Project

Project/Area Number 09044181
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionJoint Research
Research Field Building structures/materials
Research InstitutionShibaura Institute of Technology

Principal Investigator

OKADA Tsuneo  Shibaura Institute of Technology, Dept.of Architecture & Engineering, Professor, 工学部, 教授 (40013122)

Co-Investigator(Kenkyū-buntansha) KARADOGAN Faruk  Istanbul Technical University, Dept.of Structural Engineering, Professor, 構造工学部, 教授
HAYASHI Masashi  Shibaura Institute of Technology, Dept.of Architecture & Engineering, Associate, 工学部, 助教授 (80052885)
OHWADA Yoshimasa  Shibaura Institute of Technology, Dept.of Architecture & Engineering, Associate, 工学部, 助教授 (70052826)
ILKI Alper  イスタンブール工科大学, 構造工学部, 助手
YUKSEL Ercan  イスタンブール工科大学, 構造工学部, 助手
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 1998: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1997: ¥2,300,000 (Direct Cost: ¥2,300,000)
KeywordsTURKEY / Seismic Capacity / Microtremor / Hollow Brick / Ductility / DINAR Earthquake / ADANA-CEYHAN Earthquake / RC造 / 耐力壁 / 耐震診断 / 固有周期 / 地震被害 / ねじれ振動 / 低層鉄筋コンクリート造建物 / 耐力 / 設計規準 / 常時微動測定 / 動的特性 / 応答解析
Research Abstract

Rapid urbanization and industrialization cause serious structural problems in and around big metropolises. One of these big cities in the world is Istanbul that is located on a seismically active region of Anatolian peninsula.
In TURKEY, it is common that the partitioning walls and external walls were made by hollow bricks with plaster finish in almost of all modern reinforced concrete buildings, and with few RC share walls. We have done micro-tremor measurements on more than 10 RC-buildings in ISTANBUL, including bear frame under construction for the purpose to know their dynamical characteristics, We have also take measurements on 10 buildings in DINAR and in ADANA, where have been damaged seriously to sever earthquakes.
And we have examined Seismic Index Evaluation method on some buildings of them to estimate their strength and ductility.
We have also investigated damage to buildings by the 1995 DINAR Earthquake, and the 1998 ADANA-CEYHAN Earthquake.
Results of this investigation were given as under.
1)Rigidities of the RC buildings in Turkey were quite different between bear frame and finished with hollow bricks and mortar.
2)Predominant period of RC buildings will become very long after damaged by large ground motion compare with non-damaged structures.
3)Ductility of RC frames were very poor compare with them in Japan.
4)Quality of concrete was very poor too.
5)Quality of works for reinforcement was not good, because lack of knowledge about arrangement of reinforcement.
6)Walls made by Hollow bricks were very brittle, and never could sustain any axial force, then RC structures in Turkey have no redundancies to collapses of columns.
We have to start improvement immediately, design methods and construction technique, strength, ductility, quality of concrete, technique of reinforcement arrangement, to avoid losing living space and lives at severe earthquake.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (5 results)

All Other

All Publications (5 results)

  • [Publications] 大和田、林、岡田: "トルコ国内の一般的な鉄筋コンクリート建物の耐震性能の検討(その1. イスタンブール工科大学施設の耐震診断およびディナールにおける補強事例の調査)" 日本建築学会学術講演梗概集. C2. 649-650 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 林、大和田、岡田: "トルコ国内の一般的な鉄筋コンクリート建物の耐震性能の検討(その2. 常時微動測定結果)" 日本建築学会学術講演梗概集. C2. 651-652 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 林、大和田、岡田、大橋: "トルコ国内の一般的な鉄筋コンクリート建物の耐震性能の検討(その3.常時微動・強制振動実験による振動性状の検討)" 日本建築学会学術講演梗概集. 投稿済み. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 大和田義正、林正司 岡田恒男: "トルコ共和国内の一般的な鉄筋コンクリート建物の耐震性能の検討その1.耐震診断結果" 日本建築学会学術講演梗概集. B構造. 649-650 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 林正司、大和田義正 岡田恒男: "トルコ共和国内の一般的な鉄筋コンクリート建物の耐震性能の検討その2.常時微動測定結果" 日本建築学会学術講演梗概集. B構造. 651-652 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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