Flexural strength of prestressed reinforced concrete piles using high-strength material

Mitsuyoshi Akiyama, Motoyuki Suzuki, Ryota Abe

研究成果: Conference contribution

抄録

If concrete bridge systems are constructed in conditions such as very soft soil that can experience soil liquefaction due to a severe earthquake, it is difficult to prevent yielding of the pile foundation. In this study prestressed reinforced concrete pile using high-strength material to increase the pile's flexural capacity is developed. The main structural characteristics of the developed pile are that (1) the neutral axis is constantly near the centroidal axis of the pile, even if longitudinal reinforcements are yielding due to flexural moment, because the pile has a high axial compression force induced by the prestressing steel bars. This means that the concrete in the compression region can contribute to increasing the flexural strength of the pile; and (2) using carbon fiber sheets to prevent the spalling of the cover concrete can contribute to increasing the flexural strength of the pile. The results of the bending test show that the proposed prestressed reinforced concrete pile with carbon fiber sheets and infilling concrete has a higher flexural capacity than that of a pile without these sheets and infilling concrete, and the pile did not exhibit brittle behavior.

本文言語English
ホスト出版物のタイトル3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings
出版社Precast Prestressed Concrete Institute
ISBN(電子版)9780937040904
出版ステータスPublished - 2010
外部発表はい
イベント3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010 - Washington, United States
継続期間: 2010 5 292010 6 2

Other

Other3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010
国/地域United States
CityWashington
Period10/5/2910/6/2

ASJC Scopus subject areas

  • 建築および建設
  • 土木構造工学

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