Research on the effect of the durability of arch foot concrete of the Xixihe bridge as the reinforcement corrosion

This article establishes a nonlinear finite element model based on the general finite element method, and simulates the stress of the reinforced rust caused by the reinforced concrete in the arch foot of the Xixihe bridge. Based on the finite element numerical analysis, the calculation method of the corrosion rate of reinforced concrete corroded reinforcement is presented. Numerical calculation and analysis, including the concrete component angle of reinforcement corrosion and central reinforcement corrosion of uniform corrosion expansion force of concrete member, based on previous reinforcement corrosion distribution theory analysis results, combines with the results of the numerical analysis of the corrosion expansion force, to calculate the arch foot concrete cover cracking moment of steel corrosion rate, predict the Xixihe bridge arch foot concrete protective layer cracking time, and provide the reference for the design.