ABSTRACT
Pretensioned high-strength concrete pipe pile reinforced with non-prestressed steel bars (PRHC piles) is a kind of pile that adds non-prestressed steel bars to ordinary pretensioned high-strength concrete pipe piles (PHC piles) to improve its horizontal bearing capacity and seismic performance. To investigate the seismic behavior of PRHC piles, a three-dimensional dynamic nonlinear finite element model of PHRC pile embedded in the soft soil is constructed. To analyze the seismic response and damage analysis, the nonlinear behavior of soil, high-strength concrete damage behavior, and the interaction between the soil and the pile are systematically considered. The seismic acceleration responses, shear forces, bedding moments, and concrete damage states of PRHC pile under one seismic ground motion with different seismic intensities are comprehensively presented and analyzed in this study. The results can provide the theoretical basis for the seismic design and seismic performance assessment of PRHC piles.
