Seismic Performance of Prestressed Reinforced Concrete Piles Reinforced with Nonprestressed Reinforcements

Abstract

The main purpose of this paper is to study the seismic performance of prestressed reinforced concrete pile (PRC pile) reinforced with nonprestressed reinforcements. Two prestressed high strength concrete piles (PHC piles) and two PRC piles were tested. The variables studied in this research are the prestressed reinforcements ratio and nonprestressed reinforcements ratio. The piles subjected to low-cycle loading were presented in this paper, including the hysteretic performance, stiffness degradation curves, coefficient of equivalent viscous damping and skeleton-frame curves. It is shown that the failure modes of all specimens are bending damage from the test and PRC piles have good energy-absorbing hysteretic behavior.

Analysis and experimental research on the reliability of the connection between large-diameter bridge piles and caps

“…Research shows that adding steel fibers to pile concrete can improve the seismic performance of PHC pipe piles. Wang Tiecheng et al [8] completed the low-period reciprocating load test of six joints between PHC pipe piles and caps, and described the failure process and failure form at the joints. Li Qiang et al [9] used ABAQUS software to calculate and analyze the combination model of PHC pipe piles and caps, and investigated the mechanical characteristics of the joints between PHC pipe piles and caps under the combined action of axial tension and horizontal loads.…”