Damage Identification Of Bridge Structures Based On Static Response

Bridges are the hinges of traffic system, playing an important role in the national economic and society. Along with the extension of the bridge service life, international community increasingly pays attention to the safety of the exiting bridge. Now the damage identification of bridges is becoming the realm which need to enhance urgently, which is also an urgent and important task.Damage identification of bridge structures is a question which our bridge engineering urgently awaits to be solved. In this paper, a method of damage identification of bridge structures based on static response is presented. According to the rule of damage identification of bridge structures, we do a research and get a nice result on the healthy and degree of damage of bridge structures and the effect of modal mistakes cause by some reasons, The main achievements are briefly mentioned as follows:1. Has done some research on the simple induction and the summary to damage identification methods of domestic and foreign bridges structure, and has appraised each kind of bridge damage identification methods advantages, obtains that carrying on the damage identification to bridge structures using the method of static response is the current urgent matter.2. Detail introduce the basic principle carrying on damage identification to the bridge structures based on the static response, and obtained the quite ideal identification effect through the value computation.3. Considering it is difficult to get the angular displacement, also the precision is not enough, while using the method in the damage identification process has carried on shrinks step processing from the structure initial model rigidity matrix. And now only needs to get the deflection value of each pitch point then it is possible to calculate the identification result, obtained a more ideal result through the value computation.4. Based on the damage identification theory on the static response to the bridge structures, analyze the influence to the identification result caused by model error andthe survey noise affect, the value calculate example confirmed this method can get the effective identification result at the consideration of model error and in the survey noise situation to the structure system, the identification result tallies exactly to the Monte Carlo solution.The damage identification to the bridge structures is a extremely comprehensive research area, involves complex theories, and much researching difficulties, but its application prospect is widespread, also its researching value is significant, this article does only some basic research work, and along with the fundamental research and thorough the application becomes urgent need, the research on this area will certainly be further developed.