Parametric Analysis of Wind Load Effects on Cable-Stayed Bridges Across Diverse Wind Angles and Climatic Regions UsingSAP2000
Main Article Content
Abstract
This research article provides a complete parametric analysis of the effects of wind loads on cable-stayed bridges, utilizing the Quincy Bayview Bridge as a case study. The study applies sophisticated finite element analysis using SAP2000 to model the bridge's structural response under varying wind conditions. A realistic model of the bridge is created, depicting its precise geometry, material qualities, and dynamic interactions between components such as double-plane stay cables and concrete pylons. The analysis looks at the bridge's performance at various wind angles (0°, 30°, 45°, 60°, and 90°) and speeds, as prescribed by IS 875 (Part 3), in different climatic zones including Pune, Mumbai, and Delhi. Displacement, base reaction, and bending moments are key metrics that are used to assess the structural integrity and resilience of the bridge. The findings provide important insights into the bridge's dynamic behavior, illustrating how differences in wind angles and speeds affect lateral and vertical motions, internal stresses, and pressures applied on supports. The results highlight the susceptibility of cable-stayed bridges to aerodynamic forces, underlining the need of extensive testing throughout the design phase to reduce the dangers associated with aerodynamic instability. This research intends to contribute to the creation of more robust and efficient bridge designs by identifying crucial performance indicators and possible weak areas, thereby improving the safety and durability of cable-stayed bridges under varying environmental circumstances. The study closes with suggestions for future design methods and research initiatives to improve the structural performance of these critical infrastructure components.