Seismic behaviour of large earth dams: from site investigations to numerical modelling |
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| Luca Masini, Sebastiano Rampello, Luigi Callisto |
- Abstract:
- This paper presents selected results from the study on the seismic behaviour of a large earth dam. The study relies on the availability of field and laboratory tests, as well as on monitoring data collected during the construction and impounding phases. Specifically, a two- dimensional numerical model was calibrated by comparing the settlements of the dam measured during the construction with the computed values. Iterative pseudo-static numerical analyses were carried out to investigate the plastic mechanisms forming under critical conditions. The seismic performance of the dam was then evaluated through a series of dynamic analyses in terms of effective stress. The results evidenced that a significant reduction of the seismic energy is obtained if the deformability of the bedrock is accounted for in the analyses, resulting in lower permanent displacements of the dam body, and, conversely, the vertical component of the seismic action induces a sensible increase of the seismic displacements.
- Keywords:
- Earthdam, Earthquake, Dynamic Analysis, Finite Difference Method
- Download:
- IMEKO-TC4-GEO-2016-48.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- TC4 International Workshop on Metrology for Geotechnics 2016
- Title:
1st IMEKO TC4 International Workshop on Metrology for Geotechnics
- Place:
- Benevento, ITALY
- Time:
- 17 March 2016 - 18 March 2016