Damage Identification Method of Reinforced Concrete Bridge Structure based on Modal Technology

Abstract

In the actual identification of reinforced concrete bridge structure damage, the sensitivity of each mode shape to the structure damage location is different, resulting in the final damage identification method which can identify the number of damage indicators is too small. In view of this deficiency, a damage identification method of reinforced concrete bridge structure based on Modal technology is proposed. Based on the reinforced concrete bridge structure data, the modal technology is used to calculate the curvature of the load surface, and the multi-order modal curvature is selected to comprehensively locate the damage, construct the relationship between the damage degree and the bridge area, and combine the structural damage mechanical characteristics to form a damage identification process. Complete the design of damage identification method. Two traditional damage identification methods and the identification method designed in this paper are used to carry out experiments. The results show that the proposed method can identify more structural damage indicators.