Mechanic analysis of bridge reinforcement with mesh and steel fiber reinforced concrete and Experimental construction technology

The context of this paper is the research on reinforcement of Dongguan Northern Bridge of the Guangzhou-Shenzhen highway in China by using mesh and steel fiber reinforced concrete (SFRC). Numerical program MIDAS has been utilized to model the mechanical response of the bridge. The interaction between the new and old concrete bridge structures is simulated. Mechanic analysis has been performed on the most unfavorable load positions. The overloads and shrinkage creep of concrete are considered. The anchor bar's distance and the optimal thickness of the concrete bridge deck have been discussed. Finally, a real life application of the construction technology for treating the flaws of the bridge deck paving overlay with mesh and steel fiber reinforced concrete is given.