Review investigates pylon height effects on structural performance and dynamic behaviour of cable-stayed bridges, indicating optimization strategies.
Cable-stayed bridges are widely recognized as efficient structural systems for long-span applications due to their high stiffness to weight ratio and architectural flexibility. This review paper investigates the influence of pylon height on the structural performance and dynamic behaviour of cable-stayed bridges. Special emphasis is placed on understanding how variations in pylon height affect load distribution, cable force patterns, deck deflection, and overall system stiffness. The study also examines dynamic characteristics such as natural frequencies, mode shapes, and response under seismic and wind-induced excitations. It is observed that changes in pylon height significantly alter the global stiffness and vibration characteristics of the bridge, thereby influencing its serviceability and safety performance. Numerical and finite element-based studies reported in literature are synthesized to highlight key behavioral trends. The review aims to provide a comprehensive understanding for optimizing pylon geometry in the preliminary and detailed design stages.
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Mapari et al. (2026) studied this question.
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