Numerical analysis of lateral movements and strut forces in deep cement mixing walls with top-down construction in soft clay

This article presents the observed and simulated lateral movements and strut forces induced in deep cement mixing walls under deep excavation using top-down construction techniques in soft Bangkok clay. The walls are supported laterally by permanent concrete slabs and temporary struts. A three-dimen...

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Bibliographic Details
Published in:Computers and geotechnics 2017-08, Vol.88, p.174-181
Main Authors: Jamsawang, Pitthaya, Jamnam, Sittisak, Jongpradist, Pornkasem, Tanseng, Pornpot, Horpibulsuk, Suksun
Format: Article
Language:English
Subjects:
Case studies
Cement
Clay
Computer simulation
Concrete
Construction
Construction methods
Deep excavation
Deep mixing
Excavation
Finite element
Mathematical models
Numerical analysis
Simulation
Slabs
Soft clay
Struts
Three dimensional models
Top-down construction in three dimensions
Wall
Wall thickness
Walls
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Summary:This article presents the observed and simulated lateral movements and strut forces induced in deep cement mixing walls under deep excavation using top-down construction techniques in soft Bangkok clay. The walls are supported laterally by permanent concrete slabs and temporary struts. A three-dimensional numerical model is first calibrated with observed data from a case study. Then, a parametric study is performed to compare this construction method with the bottom-up method and investigate the influence of the DCM wall thickness on lateral movements and strut forces of the wall.
ISSN:0266-352X
1873-7633
DOI:10.1016/j.compgeo.2017.03.018