Reliability Simulation and Sensitivity Analysis of Prestressed Concrete Bridge

This paper takes the bridge of the A7 block in the national freeway (Ganzhou to Chongyi) as an example. According to its practical statistical data, the material properties and deterministic parameters are treated as random variables. The distribution function and statistical parameters of the random variables are concluded through a large number of numerical simulations. The ultimate limit state equation is derived by strictly adhering to the load and capacity formula requirements in Chinese highway bridge design specifications. The reliability index for flexural capacity is calculated with the Monte Carlo method and the sensitivity analysis of key parameters is carried out. Additionally, the suggestions for construction quality control are given out.