A floating slab track is applied in urban rail transit for vibration reduction. However, under repeated vehicle loads, stress concentration might occur to fixed bolts in the shear hinge of a slab. To investigate the stress and deformation distribution and locate the maximum stress on bolts, a two-dimensional (2D) floating slab track model and a three-dimensional (3D) bolt-shear hinge-slab model were established to analyze the distribution of stress and deformation. The results showed that stress concentration was located in the upper part of the bolt. Stress in the upper part of the bolt and bolt head was much higher than in rest of the parts. Stress in the bolts that were close to the end of the slab was higher than that in others, and it could be reduced by 20% when adding one bolt and by 12% when moving bolts 0.25 unit length towards to the end of slab. Bolt pre-tightening force could significantly affect stress distribution.
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