Finite-element model updating of tall buildings with a computer-aided model updating system (CAMUS)
American Society of Civil Engineers
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Under indefinite embargo due to publisher policy. The final version is available from American Society of Civil Engineers.
Dynamic behavior is one of the most important design considerations for high-rise structures; natural frequencies and corresponding mode shapes are basic data for seismic and wind response analyses. The final results of the analysis and design depend very much on the quality of the three-dimensional (3-D) finite element model developed. Comparison of natural modes of the mathematical analysis with those of field measurements is the most widely used approach to assess the credibility of the mathematical model. Finite element model updating of high-rise structures, a very time consuming procedure to achieve the credible model, has rarely been studied before. Different from the most popular model updating approaches which are based on sensitivity analysis techniques, this study presents an application of finite element model updating of high-rise structures with a computer aided model updating system (CAMUS). After investigating knowledge and experiences of model updating techniques and finite element modeling of high-rise structures, a knowledge-based system was developed to implement finite element model updating of high-rise structures. Based on the correlation analysis results of natural frequency that are stored in the knowledge base, the system searches the most likely error in the model over the knowledge base of possible problems and guides the user to update the model. The performance of the algorithm was demonstrated with an application of finite element model updating of a 66-storey frame-core wall office tower. Read More: http://ascelibrary.org/doi/abs/10.1061/40794%28179%29136
Paper presented at International Conference on Computing in Civil Engineering 2005, Cancun, Mexico July 12-15, 2005 Read More: http://ascelibrary.org/doi/abs/10.1061/40794%28179%29136
Deng, X. and Brownjohn, J. (2005) Development of a Computer Aided Model Updating System (CAMUS). in Lucio Soibelman; and Peña-Mora Feniosky (Eds) Computing in Civil Engineering (2005)