An Improved Method of Evaluating Technical Conditions of a Concrete Bridge

Bridge detection and evaluation are designed for bridge maintenance and repair decision service. Current bridge technical condition evaluation method can’t response the main performance decay process of the structural members. Through the analysis on 398 reinforced concrete bridges’ detection data, a bridge performance decay model is established. Based on the existing bridge evaluation specifications, an optimum method of classified evaluation of technical condition between structure and nonstructural members, together with classified detection method of bridge structure based on structural design principles, was set up. It can provide important basis for the structural and non-structural repairing on bridge maintenance. At the same time, it’s helpful for establishing the correlation between the structural defects and the decay of the structural bearing capacity.