14 (a) and (b), as the size of the shear key gradually increases, the vertical deformation of the model along the three paths shows a decreasing trend.
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Research on the effects of curvature and shear keys on torsional stiffness and interfacial stress of segmented U-shaped curved bridge.
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The sentences
The bridge deforms upwards along Path-1 and deflects downwards along Path-3, indicating a clear trend of torsional deformation, which is likely due to the structural characteristics of curved bridges.