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Based on an actual corrugated steel plate arch bridge, considering soil-structure interaction, by using the finite
element program of ANSYS, a 2-D finite element model was set up to analyze the soil pressure and structural deformation
under different load conditions in detail. Since this type of structure relies on the soil-structure interaction to share the
load, as the structural parameters have a strong effect on the mechanical characteristics of the structure. So the soil pressure
and deformation of the structure were analyzed by changing the parameters, such as the cross-section of corrugated
steel plate, the elastic modulus, internal friction angle and Poisson’s ratio of the backfill soil. The analysis shows that soilstructure
interaction redistributes stress in the surrounding soil and reduces the adverse influence of excessive structural
displacement. Results reveal that the stiffness decrease of the corrugated steel plate is positive to the soil-structure interaction
and reduces the vertical soil pressure. The increase of elastic modulus of backfill soil is positive with respect to soilstructure
interaction and leads to smaller soil pressure to the steel arch. Larger internal friction angle of the backfill soil
increases the difference of soil pressure within and outside the span and has slightly negative effect to the soil-structure interaction.
Soil with smaller Poisson’s ratio has some positive effect in reducing soil pressure to the steel arch.