2024

Dynamic Load Analysis in Long-Span Suspension Bridges

Author(s): Miguel Vargas, Isabella Reyes

Abstract

Dynamic load analysis is a vital aspect of long-span suspension bridge design, ensuring resilience against complex interactions of vehicular traffic, wind, and seismic forces. This study develops a computational framework using finite element modeling to simulate these effects on a conceptual suspension bridge with a main span of 1,200 meters. The results identify critical vulnerabilities, including excessive displacements and stress concentrations, particularly under combined loading scenarios. Resonance phenomena observed at specific wind speeds highlight the need for improved damping mechanisms. Statistical analysis and experimental validation confirm the reliability of the findings, with a 5% probability of serviceability failure under extreme conditions. This research provides actionable insights into bridge dynamics, recommending advanced materials, aerodynamic dampers, and real-time monitoring systems to enhance structural safety.