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Performance of earth dams under seismic effects assessed by shaking table tests
The use of performance-based design was widened to geotechnical structures to overcome limitations that exist in conventional seismic design methods and to obtain more economical design solutions. A good prediction of the residual deformations and defining the damage levels are essentials of this method. In this study, shaking table tests were performed on 2 different types of earth dam models (central impervious core and asphalt/concrete lining dam) to observe their residual displacements and understand their performance under the effect of seismic events. Results of experiments showed that the dam with a face lining showed a better performance than the central impervious core dam under seismic effects. The dam body of the central core dam model was prepared in different relative densities and greater deformations were observed with the decrease in the relative density. Greater lateral displacements and settlements were observed in the upstream part of the dam body due to existence of the water in the upstream side, which caused the decrease in the effective stress. An attempt was made to define the damage levels that can be used in performance based design by considering both the case studies and the observed residual displacements obtained from shaking table tests.
Performance of earth dams under seismic effects assessed by shaking table tests
The use of performance-based design was widened to geotechnical structures to overcome limitations that exist in conventional seismic design methods and to obtain more economical design solutions. A good prediction of the residual deformations and defining the damage levels are essentials of this method. In this study, shaking table tests were performed on 2 different types of earth dam models (central impervious core and asphalt/concrete lining dam) to observe their residual displacements and understand their performance under the effect of seismic events. Results of experiments showed that the dam with a face lining showed a better performance than the central impervious core dam under seismic effects. The dam body of the central core dam model was prepared in different relative densities and greater deformations were observed with the decrease in the relative density. Greater lateral displacements and settlements were observed in the upstream part of the dam body due to existence of the water in the upstream side, which caused the decrease in the effective stress. An attempt was made to define the damage levels that can be used in performance based design by considering both the case studies and the observed residual displacements obtained from shaking table tests.
Performance of earth dams under seismic effects assessed by shaking table tests
Einschätzung des Verhaltens von Erddämmen unter seismischen Einwirkungen mit dem Schütteltischversuch
Sendir Torisu, S. (author) / Sato, J. (author) / Towhata, I. (author)
2009
6 Seiten, 16 Bilder, 2 Tabellen, 9 Quellen
Conference paper
English
Damm , Dammbau , Bauingenieurwesen , Erdbau , Erddamm , Erdaufschüttung , Seismologie , Erdbeben , erdbebensicheres Bauwerk , Auslegung (Dimension) , Konstruktion , Eigenspannung , Verformung , Verformung unter Last , dynamische Belastung , Standsicherheit , mechanische Schwingung , Vibrationssystem , Versuch , Modell , mechanisches Modell , Bodenmechanik
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