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Contact Friction Behavior Analysis of Spherical Hinges in Swing Bridges Using Finite Element and Meta-Modeling

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This research aims to analyze the contact friction behavior of spherical hinges in swing bridges using finite element modeling and a support vector regression metamodel.
Developed a refined finite element model of a multi-lane swing bridge.
Created a support vector regression metamodel for predicting contact stress and frictional moments.
Performed global sensitivity analysis using Morris and Sobol’ methods.
The SVR metamodel achieved adjusted coefficients of determination exceeding 0.94 for predictive accuracy.
Increasing support radius significantly reduced maximum contact stress; swing weight increased it.
Decreasing curvature radius and increasing friction coefficient enhanced frictional moments.

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Randomized trial analyzes contact friction in swing bridges, suggesting metamodels enhance design efficiency.

Wang et al. (2026) studied this question.

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