Numerical comparison of retaining system behavior for a deep excavation case with and without ground improvement

Maghsoudloo, Arash
Ahmadinaghadeh, Reza
Toker, Nabi Kartal
In the construction of deep excavations in urban areas, the safety of adjacent ground and structures becomes major concern for engineers. In soft clays, the main reason for occurrence of large deflections of soil support systems in excavations is instability of the excavation base. This paper will focus on analyzing and comparing design of an excavation with and without jet grout improvement applied to the excavation base by employing the finite-element code PLAXIS. A well-documented case study is analyzed, and soil properties in the model are calibrated using available field data from inclinometers. Then the same analysis is repeated for the improved case and results are compared. The results reveal the effectiveness of jet grout blocks in decreasing lateral wall movement, base heave and surface settlement on the retained side.
International Conference on Ground Improvement and Ground Control (ICGI 2012)


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Citation Formats
A. Maghsoudloo, R. Ahmadinaghadeh, and N. K. Toker, “Numerical comparison of retaining system behavior for a deep excavation case with and without ground improvement,” presented at the International Conference on Ground Improvement and Ground Control (ICGI 2012), Wollongong, Avustralya, 2012, Accessed: 00, 2021. [Online]. Available: