Research on the safety performance evaluation of existing reinforced concrete double-curvature arch bridge

According to the finite element method, the bridge design code and bridge capacity assessment standards, necessary theoretic analysis calculation and in-site test have been carried out for major bearing components through establishing effective structure analysis mechanical model, which is based on bridge damage survey and mechanical properties. These calculation and in-site test can evaluate the bearing capacity of bridge structure comprehensively. It is an effective tool to evaluate the safety property of bridge structure by combining theoretical analysis calculation and in-site test. Therefore, the result based on this combined method has not only theoretical meaning but engineering practical value.