Theoretical Analysis of In-Plane Stability of Self-Anchored Suspension Bridges

This compressive makes the in-plane stability of self-anchored suspension bridges a critical design consideration. However, the theoretical underpinnings of this stability remain unresolved, primarily due to the lack of robust comprehensive analytical models.

To address this gap, this study employs theoretical analysis to investigate the in-plane stability behavior of self-anchored suspension bridges with the developed comprehensive analytical model. The analytical findings are further validated through finite element method, simulations, ensuring a rigorous evaluation of structural performance. The analysis results reveal that the main cables and the suspenders provide elastic supports for the stiffening girder, and the self-anchored suspension bridge is analogous to a prestressed column.