A 3D continuum FE-model for predicting the nonlinear response and failure modes of RC frames in pushover analyses
| Autor: | Magdalena Schreter, Günter Hofstetter, Mohammad Reza Azadi Kakavand, Matthias Neuner |
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| Rok vydání: | 2018 |
| Předmět: |
Earthquake engineering
Discretization business.industry Computer science Truss 020101 civil engineering 02 engineering and technology Building and Construction Structural engineering Geotechnical Engineering and Engineering Geology Finite element method 0201 civil engineering Nonlinear system 020303 mechanical engineering & transports Geophysics 0203 mechanical engineering Structural load Earthquake shaking table business Civil and Structural Engineering Test data |
| Zdroj: | Bulletin of Earthquake Engineering. 16:4893-4917 |
| ISSN: | 1573-1456 1570-761X |
| Popis: | Compared to the commonly employed finite element models of RC structures in earthquake engineering, based on structural elements, refined finite element models, characterized by discretizing the concrete by 3D continuum elements together with an advanced nonlinear material model for concrete combined with 1D truss elements for the reinforcement together with an elastic–plastic material model for steel, allow valuable deeper insights into the stress distribution in RC structures and the evolution of concrete damage. As a first step towards the application of such refined finite element models in earthquake engineering, their capabilities and shortcomings are demonstrated for pushover analyses. For this purpose, pushover analyses of four RC frames were performed, for which well documented extensive test data from shaking table tests, conducted by Yavari, is available. The comparison of numerical and experimental results demonstrates the capability of refined FE-models to capture the lateral load carrying capacity as well as the location and evolution of concrete damage very well. However, the well-known shortcoming of pushover analyses of predicting a much larger lateral ductility compared to the observed one in the shaking table tests was also observed. |
| Databáze: | OpenAIRE |
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