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

Mitsuyoshi Akiyama, Motoyuki Suzuki, Ryota Abe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publication3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings
PublisherPrecast Prestressed Concrete Institute
ISBN (Electronic)9780937040904
Publication statusPublished - 2010
Externally publishedYes
Event3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010 - Washington, United States
Duration: 2010 May 292010 Jun 2

Other

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

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Keywords

  • Carbon fiber sheet
  • Flexural strength
  • High strength concrete
  • High strength steel
  • Pile

ASJC Scopus subject areas

  • Building and Construction
  • Civil and Structural Engineering

Cite this

Akiyama, M., Suzuki, M., & Abe, R. (2010). Flexural strength of prestressed reinforced concrete piles using high-strength material. In 3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings Precast Prestressed Concrete Institute.