This paper presents the nonlinear finite element analysis results of hollow slab beam strengthened with steel plate-fiber polyurethane cement (SP-FPUC) composite. Relative to single reinforcement, the innovative strengthening technique was found to more effectively improve the carrying capacity of hollow slab beam and the strain of steel bar and concrete was significantly lower under the same load. The finite element model of a hollow slab beam bridge with damaged hinged joints on Harbin-Daqing Freeway was established to analyze the effect of composite reinforcement on the lateral transfer performance. The results indicated that the transverse distribution coefficient curve approached linearity with increasing FPUC thickness and the integrity of the hollow slab beam was well improved. The stress of FPUC laminate was greatly affected by the different deflections of adjacent slabs and the stress of steel plate is related to FPUC thickness and beam deflection. These results indicate that SP-FPUC strengthening has potential as an external strengthening technique for deteriorated hollow slab beams.

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