Abstract: Based on the research of domestic and foreign scholars on the state evaluation method of existing bridges, the state evaluation index system of existing segmental precast bridge structure is established. The condition assessment standard of existing segmental precast bridge based on analytic hierarchy process method is proposed. According to the principle of analytic hierarchy process method, the weight assignment method is introduced to consider the importance of each factor to evaluate the damage condition of the existing damaged segmental beam, so as to form a new set of state evaluation methods for the existing segmental precast bridge. Finally, an example of damage condition assessment of an existing segmental precast bridge is used to demonstrate the implementation of the proposed method for segmental beam.

Key words: segmental precast concrete bridges, damage assessment, analytic hierarchy process method, weight assignment method