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2010 Fiscal Year Final Research Report

SEISMIC REINFORCEMENT OF EXISTING CYLINDRICAL STEEL PIERS BY TAKING ADVANTAGE OF CONTACT EFFECT OF ADDED STIFFENERS

Research Project

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Project/Area Number 20560455
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Structural engineering/Earthquake engineering/Maintenance management engineering
Research InstitutionToyota National College of Technology

Principal Investigator

CHU Kazuo  Toyota National College of Technology, 環境都市工学科, 教授 (20141898)

Research Collaborator KAWANISI Naoki  豊田工業高等専門学校, 環境都市工学科, 准教授 (60300589)
Project Period (FY) 2008 – 2010
Keywords耐震構造
Research Abstract

In order to seismically strengthen existing bridge piers, it is commonly required to improve only their ductility while suppressing any excessive strengthening of load bearing capacity. In the present study, we proposed and verified a new method, which is, unlike the conventional method of providing longitudinal stiffeners, the same stiffeners are provided to existing cylindrical steel piers while elaborately allowing a slight gap in between the bottom of a stiffener and bottom plate of a pier. The estimated seismic effect has been verified by an experiment and the numerical analysis. Our studies showed that only the ductility has been effectively increased by being contacted the bottom of stiffeners and the bottom plate of piers after seismic force has reached a maximum level.

  • Research Products

    (1 results)

All 2010

All Journal Article (1 results) (of which Peer Reviewed: 1 results)

  • [Journal Article] 接触効果を利用した縦リブ補強による既設円形断面鋼製橋脚の耐震性能の向上2010

    • Author(s)
      忠和男、川西直樹、櫻井孝昌
    • Journal Title

      土木学会論文集 Vol.66, No.2

      Pages: 239-252

    • Peer Reviewed

URL: 

Published: 2012-01-26   Modified: 2016-01-21  

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