Performance-based design optimization of embankments resting on soft soil improved with T-shaped and conventional DCM columns
Journal article
Authors/Editors
Strategic Research Themes
Publication Details
Author list: Phutthananon, Chana; Jongpradist, Pornkasem; Jongpradist, Pattaramon; Dias, Daniel; Jamsawang, Pitthaya; Bergado, Dennes T.;
Publisher: Springer
Publication year: 2021
Journal: Acta Geotechnica (1861-1125)
Volume number: 16
Issue number: 10
Start page: 3301
End page: 3326
Number of pages: 26
ISSN: 1861-1125
eISSN: 1861-1133
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
This paper presents a parametric study of the optimization design for T-shaped deep cement mixing (TDM) and conventional deep cement mixing (DCM) columns improved soft soil for supporting embankments. The objective of the optimization was to find the best compromised solution for the cost effectiveness in conjunction with minimizing the serviceability limit state (SLS) requirements (i.e., settlements, differential settlements, and lateral movements) while maximizing the ultimate limit state (ULS) requirement (i.e., factor of safety against bending failure). A combination between a genetic algorithm and the response surface method was employed as an optimization approach for determining the optimal solution. The relations and interpretations between design column parameters and design requirements are presented and discussed through parametric studies. The optimization results indicate that the optimal TDM column can allow to permit a lower construction cost than the optimal DCM one. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
Keywords
Column-supported embankment, Embankment stability, Optimization design, T-shaped deep cement mixing column
Contact Information