Experimental study of change in load carrying capacity and vibration characteristics of PC box girders with defective grout and failures in tendons

• Takemura Kohei

  京都大学 大学院工学研究科社会基盤工学専攻修士課程

• Hayashi Gen

  大阪市立大学 大学院工学研究科都市系専攻

• Kim Chul-Woo

  京都大学 大学院工学研究科社会基盤工学専攻

• Yoshida Eiji

  土木研究所 構造物メンテナンス研究センター

Bibliographic Information

Other Title

• グラウト未充填と PC 鋼材破断を模擬した PC 箱桁の耐荷性能と振動特性の変化に関する実験的検討

Abstract

Prestressed concrete (PC) bridges account for about 44% of all bridges in Japan, and damage of PC tendons caused by defective grouting has been reported. In order to inspect, repair and maintain the PC bridge efficiently, it is necessary to develop a monitoring technology that can quantitatively and simply evaluate the integrity. This study examines changes in bridge performance and modal parameters of PC box girders due to progressive loading, and defective grouting and failures in PC tendons through the experiment. Static loading test showed that local cracks were dominated around the location of defective grouting and failure of PC tendons. A moderate correlation was observed between the energy-based bending performance and the natural frequency of 1^st and 2^nd bending modes.

Journal

• Journal of Structural Engineering, A

  Journal of Structural Engineering, A 67A (0), 195-207, 2021

  Japan Society of Civil Engineers

Keywords

• PC box girder
• load-carrying capacity
• vibration characteristics
• PC tendon cut

Details

• CRID: 1390006231374023296
• NII Article ID: 130008025954
• DOI: 10.11532/structcivil.67a.195
• ISSN: 1881820X
• HANDLE: 2433/269394
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed