Abstract
This paper has been prototyped fine 1:20 scale model of the finite element numerical simulation analysis of each parameter sensitivity test conditions, based on similar principles of dynamics, through the production of about 1/20 the proportion of prototype scale model of the bridge, dynamic characteristics of research conducted scale model of finite element analysis, and study whether there are cracks in the presence of dynamic response mode model, summarized the structure of the bridge structure in a given period reflect the physical characteristics of the local sound voiceprint and bridges under the geometric structure of the physical parameters of a period of time to maintain the basic stability conditions, the "voiceprint" has a high probability of stability.
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