The antiseismic energy dissipation safety factor of the reinforced concrete bridge piers based on the inverse deduction of the Park-Ang damage model

摘要

The concept of the antiseismic energy dissipation safety factor of the reinforced concrete bridge pier is put forward based on the dynamic energy equation of multi-degree structures and the inverse deduction of the Park-Ang damage model under given displacement and damage controlling conditions. In addition, a real concrete pier is analyzed in practical to show the feasibility of the theory, where the popular finite element software is utilized. The results show that the real ability of energy dissipation of the reinforced concrete bridge pier can be calculated under given displacement and damage controlling conditions and then the safety factor can be obtained subsequently in varied earthquake waves. This method may provide an effective means for the antiseismic assessment of the existing concrete bridge piers.