| With the development of social and economic construction, many large investment and important public buildings and facilities in the earthquake-induced hazardous, but more and more buildings to enter the stage of aging, its safety performance is also growing concern. Especially frequent in recent years, earthquakes and other natural disasters, resulting in a large number of building structural damage and casualties brought great loss and disaster to the society and life. It is now very concerned about the health condition of the building structure, suffered damage after an earthquake or other disaster situation. The frame structure in the community in the proportion of the existing office buildings, schools, residential and other building structures is very large, so the research framework of structural damage identification method is very necessary. The building structure of the framework classes to better diagnosis, analysis, assessment, based on its take measures or to provide some reference to the structural design of reinforcement, transformation.Concrete frame structure using modal analysis and finite element method on our common modal analysis and damage identification, and binding assay studies to verify the adaptability and effectiveness of the method, and then using finite element software structure of a practical framework modal analysis and damage identification, the final results of the analysis with the actual design calculation results, summary of the modal analysis and finite element method in the framework of structural damage identification, qualitative conclusions. Methods and conclusions of this study can provide a certain reference value to the future framework for structural test. Damage to the frame structure recognition technology will have broad application prospects.The main content of this paper are:(1)summarizes the architectural framework for structural damage identification method;(2)the application of the modal analysis theory, the damage identification, modal analysis and experimental research, and a reinforced frame model for the object;(3)the use of large-scale finite element analysis software ANSYS on a seven-layer framework (plus basement, room layer, a total of9floors) building structures, modeling and analysis;(4)summarizes the seismic response analysis of the theoretical methods, and in this article engineering example of the seismic response analysis;(5) the variation of modal parameters through the adjustment of elastic modulus and other parameters of the framework structure after injury.(6)Conclusions and Prospects. |
