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

Mitsuyoshi Akiyama; Motoyuki Suzuki; Ryota Abe

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

Mitsuyoshi Akiyama, Motoyuki Suzuki, Ryota Abe

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings
Publisher	Precast Prestressed Concrete Institute
ISBN (Electronic)	9780937040904
Publication status	Published - 2010
Externally published	Yes
Event	3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010 - Washington, United States Duration: 2010 May 29 → 2010 Jun 2

Other

Other	3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010
Country/Territory	United States
City	Washington
Period	10/5/29 → 10/6/2

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

Flexural strength of prestressed reinforced concrete piles using high-strength material. / Akiyama, Mitsuyoshi; Suzuki, Motoyuki; Abe, Ryota.
3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings. Precast Prestressed Concrete Institute, 2010.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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, 3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010, Washington, United States, 10/5/29.

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

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Keywords

ASJC Scopus subject areas

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