Comparative Analysis of Cost, Time, Amount, Power, and Method of Implementation Between Foundation of Square Pile And Bore Pile Foundation in Prategang Bridge

Abstract

Foundation selection is a critical determinant of the overall success, stability, and cost-effectiveness of prestressed bridge projects. This study presents a comprehensive comparative analysis between two widely used deep foundation systems: driven square piles and cast-in-situ bore piles. The comparison is evaluated based on five key metrics: cost, time, amount (quantity of piles and materials), power (load-bearing capacity), and the method of implementation. The research methodology involves structural design calculations based on geotechnical data for a representative prestressed bridge. This is followed by detailed quantity take-offs, cost estimations, and construction time scheduling to objectively compare the two systems. The findings indicate significant trade-offs. The square pile foundation demonstrates advantages in terms of cost-efficiency and implementation speed due to its precast fabrication and rapid installation. In contrast, the bore pile foundation, while requiring a longer duration and higher initial cost, typically offers greater power (bearing capacity) per pile and presents a low-vibration implementation method suitable for sensitive urban or challenging geotechnical environments. This analysis concludes that the optimal foundation choice is not universal but is highly dependent on project-specific priorities. This study provides a quantitative framework to aid decision-making for engineers and project managers in balancing budget, schedule, and structural performance requirements.