Abstract
The excavation and construction of metro structures in a high-density urban area require cautions in the design process. The knowledge of ground should warn the engineers and enable them to take measures to avoid or at least to minimize the potential risks. To achieve that task, numerical simulations are used to determine the deformations due to the construction process. The role played by soil behavior is as fundamental as the values of its parameters. Due to the heterogeneity character of the soil, its random parameters influence on the response of the numerical simulation. A good understanding of that response could be addressed through sensitivity analysis, that is, the assessment of the impact of individual input parameters or sets of input parameters on the response of the model. In this paper, a sensitivity analysis is performed to illustrate the effect of the uncertainty of the input parameters on the response of a numerical simulation of tunnel construction through the finite element code Zsoil. For this purpose, the first-order sensitivity and the total order sensitivity based on Fourier Amplitude Sensitivity (FAST) technics will be performed.
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Noubissi, C., Taherzadeh, R., Puel, G., Lopez-Caballero, F. (2021). Uncertainty and Sensitivity Analysis of Soil Parameters for Tunneling in Urban Area. In: Barla, M., Di Donna, A., Sterpi, D. (eds) Challenges and Innovations in Geomechanics. IACMAG 2021. Lecture Notes in Civil Engineering, vol 125. Springer, Cham. https://doi.org/10.1007/978-3-030-64514-4_98
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DOI: https://doi.org/10.1007/978-3-030-64514-4_98
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