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Author(s):	Bode, Manuel; Medicus, Getraud; Fellin, Wolfgang; Schranz, Fabian
Title:	Vergleich unterschiedlicher Materialmodelle an einer Aushubsimulation
Abstract:	Die Wahl eines passenden Materialmodells, das in der Lage ist, das Bodenverhalten bei FE-Berechnungen realistisch darzustellen, hat einen maßgeblichen Einfluss auf die dabei erhaltenen Berechnungsergebnisse. Anhand von Vergleichsrechnungen mit mehreren Materialmodellen sollen die Gemeinsamkeiten und Unterschiede bei den Ergebnissen verdeutlicht werden. Hierfür wird ein Baugrubenaushub simuliert und sowohl die auftretenden Verformungen als auch die mittels Parameterreduktion ermittelte Standsicherheit betrachtet. Dabei wird neben den bekannteren Modellen Hardening Soil und der Hypoplastizität die Barodesie als Modell für FE-Berechnungen vorgestellt. Während sich bei allen Modellen vergleichbare Verformungen einstellen, werden bei der berechneten Standsicherheit deutliche Unterschiede festgestellt. Comparison of different material models by simulation of an excavation. The choice of a suitable material model, which is able to represent the soil behaviour in FE-simulations realistically, has a significant influence on the calculation results obtained. With the help of comparative calculations using several material models, the similarities and differences in the results will be clarified. For this purpose, an excavation is simulated and both the occurring deformations and the stability determined by parameter reduction are considered. Besides the more known models Hardening Soil and Hypoplasticity, Barodesy is presented as model for FE-calculations. While all models show comparable deformations, the calculated stability shows clear differences.
Source:	geotechnik 42 (2019), No. 1
Page/s:	11-20
Language of Publication:	German

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