EXPERIMENTS ON THE SEISMIC BEHAVIOR OF PHC PILES : Study of the improvement in the bearing capacity and deformability of the prestressed high strength concrete(PHC) pile, Part 1

Kokusho, Seiji; Wada, Akira; Kobayashi, Kazuo; Mitsugi, Shiro; Ueda, Kuninari

doi:10.3130/aijsx.376.0_71

Cited by 4 publications

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“…There was no consideration of filling materials within the hollow section of the pile. The observed shear capacities from Kishida et al, [14] Sugimura et al, [21] and Kokusho et al [22] specimens were obtained from each respective references while shear capacities from the tested pile specimens were extracted directly from the experimental results since the dataset was part of the recent project conducted by authors.…”

Section: Validation Of Shear Design Equation Based On Dataset From Th...mentioning

confidence: 99%

Shear performance evaluation of PHC piles under different levels of axial load ratio

Oktiovan

Otaki

Obara

et al. 2022

Earthq Engng Struct Dyn

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Precast prestressed high-strength spun concrete (PHC) piles are one of the common types of piles used in Japan due to its high bearing capacity. These piles have been utilized as an industrial standard since the 1970s as part of earthquakeresilient foundation systems. The focus of this research is to examine the shear performance of PHC piles subjected to large earthquake loads. Three hollowsection PHC pile specimens were tested under constant compressive or tensile axial load along with quasi-static antisymmetric lateral load. An investigation using finite element analysis was carried out to reproduce the damage that occurred during the experiment. Comparison between experimental and analytical results were presented in terms of global and local behaviors of the piles. The finite element models were able to simulate axial splitting cracks that occurred for specimens under axial compression load. In addition, a parametric study was conducted to observe the influence of axial load ratio and shear span to diameter ratio on the shear capacity and failure mode of PHC piles. The study results along with the results from a PHC pile database are compared to the shear design equation proposed in the guidelines for PHC piles from the Architectural Institute of Japan (AIJ).

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Section: Validation Of Shear Design Equation Based On Dataset From Th...mentioning

confidence: 99%

Shear performance evaluation of PHC piles under different levels of axial load ratio

Oktiovan

Otaki

Obara

et al. 2022

Earthq Engng Struct Dyn

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“…In order to improve the horizontal bearing capacity of PHC piles, a lot of research has been done. Kokusho et al [6,7] found that a combination of concrete filled in the hollow part of PHC piles and high-strength spiral hoop was very effective for improving the deformability of PHC piles. Nagae et al [8,9] conducted cyclic test on prestressed reinforced concrete pile (PRC pile) and considered the effect of axial deformed bars and lateral reinforcement on the seismic performance of PRC piles.…”

Section: Introductionmentioning

confidence: 99%

Study on Seismic Performance of Improved High‐Strength Concrete Pipe‐Pile Cap Connection

Yang

Nan

2020

Advances in Materials Science and Engineering

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Four prestressed high-strength concrete pile- (PHC pile-) pile cap connections under low-cycle loading were tested to study the test phenomena, failure modes, hysteretic performance, ductility, and bearing capacity. The PHC piles were reinforced with steel fiber and deformed bars and CFRP. The tests results showed that the connections were damaged by bending. The concrete of the caps were squeezed to be crushed. The concrete of connection was crushed and formed a hinge joint that resulted in the connection rotating unrestricted, and the rotation capacity of connection increased. The PHC pile reinforced with steel fiber and deformed bars can improve the displacement ductility of the connections. The finite element software ABAQUS was used to simulate the nonlinear behavior of pile-cap connections. The prediction agreed relatively well with the experimental results. The stress and strain of specimens were studied. The connections should be designed with enough rotating capacity and make sure the cap will not be damaged by squeezing or prying due to the rotation of pile end.

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単純梁方式曲げ試験によるsc杭の中空部に中詰めした効果の検討

Tanaka¹,

Sekiguchi

Nakai

et al. 2017

Nihon Kenchiku Gakkai Kozokei Ronbunshu

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The objective of this study is to examine the concrete filled effect in the hollow part of SC pile in order to improve the deformation performance of pile. In the pile foundation structure, the improvement is prompted, assuming secondary seismic design. But, Study on the deformation capacity of precast concrete pile is not sufficiently advanced. This study focuses on SC pile in precast concrete pile. SC pile has an excellent bending strength and deformation performance. This study examined the effect of some parameters for deformation performance of SC pile by simple beam bending test.

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EXPERIMENTS ON THE SEISMIC BEHAVIOR OF PHC PILES : Study of the improvement in the bearing capacity and deformability of the prestressed high strength concrete(PHC) pile, Part 1

Cited by 4 publications

References 0 publications

Shear performance evaluation of PHC piles under different levels of axial load ratio

Shear performance evaluation of PHC piles under different levels of axial load ratio

Study on Seismic Performance of Improved High‐Strength Concrete Pipe‐Pile Cap Connection

単純梁方式曲げ試験によるsc杭の中空部に中詰めした効果の検討

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