Calibration of a numerical model for the investigation of piled rafts under dynamic loading
Calibration of a numerical model for the investigation of piled rafts under dynamic loading
Limited knowledge available on the soil-structure interaction of piled rafts under cyclic and dynamic loading together with gaps in national building codes frequently prevents the design of technically and economically optimised foundations for sensitive structures, such as foundations for high-rise buildings or bridges. As the first step in a research project to investigate the bearing behaviour of piled rafts under dynamic loading, existing model tests and in-situ measure- ments are evaluated to provide a database for the calibration of numerical models. This paper focuses on the numerical back- analysis of the centrifuge model tests on piled rafts by Horikoshi et al. (2003a; 2003b). The 3D finite element model employs the Hardening Soil model with small-strain stiffness (HSsmall) to simulate the material behaviour of the Toyoura sand used in the model tests. In the scope of this work, the calibration process of the material parameters and the results of the back- analysis of the model tests are presented.
Y. Degu; Oliver Reul; A. Worku; Franz Tschuchnigg
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
C - Risk analysis and safety evaluation
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