Effect of Partial Drainage on Optimized Parameters Based on Deformations of a Deep Supported Excavation
Publication: Geo-Congress 2024
ABSTRACT
This paper summarizes the inverse analyses that explicitly considered hydrodynamic time effects and the results of such optimizations for the supported excavation for the Simpson Querry Biomedical Research Center (SQBRC) in Chicago. To evaluate hydrodynamic effects arising from pore pressure dissipation, consolidation stages were included in finite element simulations of the excavation to explicitly model the time effects. Both stiffness parameters and hydraulic conductivity were computed based on optimization using the lateral wall movements during excavation. The resulting optimized parameters considering the time effect are compared with those using only undrained construction stages to assess the changes in parameter values that arise from explicitly considering the time effects. Conclusions are drawn with respect to the applicability of the conventional undrained assumption for excavations through clay.
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Geo-Congress 2024
Pages: 305 - 314
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Published online: Feb 22, 2024
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