Soils and Foundations

Soils and Foundations

Volume 59, Issue 6, December 2019, Pages 1728-1739
Soils and Foundations

Performances of SDCM and DCM walls under deep excavation in soft clay: Field tests and 3D simulations

https://doi.org/10.1016/j.sandf.2019.07.012Get rights and content
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Abstract

This study presents the results of full-scale tests and three-dimensional finite element analyses of deep cement mixing (DCM) and stiffened deep cement mixing (SDCM) columns under lateral loads and DCM and SDCM walls under deep excavation in soft clay. The DCM walls used in this study comprised one, two and three rows of DCM columns, whereas the SDCM walls consisted of only one row of DCM columns with steel H-beams inserted in either all DCM columns or in alternating DCM columns. The measured and simulated results are presented in terms of profiles of lateral displacement, settlement and bending moment.

Keywords

Deep excavation
Deep mixing
Finite element
Stiffened deep cement mixing
Wall

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Peer review under responsibility of The Japanese Geotechnical Society.