Abstract
The damage identification research based on strain mode was discussed in this paper, and based on MATLAB, the models on the severy conditions of preset damaged was compared also. The results show that this method is more rapid, and the parameters impact of the strain mode is more intuitive than other finite element analysis software. The damage location and the extent of injury of simply beam can accurately determined by strain mode shapes. The conclusion is theoretical academic significance value of assess in service bridge structure examination.
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