Numerical analyses of an experimental excavation supported by panels of lime-cement columns
Artikel i vetenskaplig tidskrift, 2020

The influence of ground improvement with panels of overlapping lime-cement columns on the behavior of a braced excavation loaded to failure has been investigated using 3D numerical analyses and the results are compared with an experimental full-scale failure test. The analyses reveal that stress-induced strength anisotropy of lime-cement improved clay needs to be considered when the stress path for the actual field conditions differs from that in conventional laboratory testing. In addition to strength parameters, the modulus of deformation that is consistent with the actual encountered stress path is also needed for reasonable predictions.

Deep mixing columns

Deep excavation

Finite element analyses

Strength anisotropy


Razvan Ignat

Kungliga Tekniska Högskolan (KTH)

Sadek Baker


Minna Karstunen

Chalmers, Arkitektur och samhällsbyggnadsteknik, Geologi och geoteknik

Sven Liedberg


Stefan Larsson

Kungliga Tekniska Högskolan (KTH)

Computers and Geotechnics

0266-352X (ISSN) 1873-7633 (eISSN)

Vol. 118 103296


Mineral- och gruvteknik

Teknisk mekanik




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