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P. Tschernutter, S. Seiwald, A. Kainrath:
"Rheological behaviour of an embankment dam after heightening";
Vortrag: 6th International Conference on Dam Engineering, Lissabon; 15.02.2011 - 17.02.2011; in: "Proceedings of the 6th International Conference on Dam Engineering", C. Pina, E. Portela, J. Gomes (Hrg.); CI-Premier Pte Ltd, (2011), ISBN: 978-981-08-7896-2; S. 1193 - 1210.

The behaviour of an existing embankment dam with a central concrete water barrier after heightening of the dam was analyzed with various soil mechanic models like Mohr Coulomb and Hardening Soil. The approximately 50 m high Bockhartsee Dam in Austria is located in a mountainous region and on a high elevation. The upstream dam
foundation has a significant inclination towards the reservoir and creates special foundation conditions. Because of the high elevation of the dam, locally available fill materials (solid rock, moraine) had to be used for the upstream and downstream dam shoulders and an unconventional design was selected for the heightening of the dam. The used dam materials had different deformation properties and caused an unexpected movement during and after first impounding. The dam is equipped with several devices to monitor the deformation of the structure after loading and reloading cycles. By comparing the monitoring data with the results of numerical analyses, it was possible to improve the understanding of the complex rheological behaviour of different fill materials in the dam shoulders and the influence of the inclined upstream dam foundation.

rheological, behaviour, dam, rockfill dam, finite elemente, dammbau, hardening soil