Large-strain analysis of vertical drain-improved soft deposit consolidation considering smear zone, well resistance, and creep effects. (July 2020)

• Record Type: Journal Article
• Authors: Nguyen, Ba-Phu; Do, Thanh-Hai; Kim, Yun-Tae
• Is Part Of: Computers and geotechnics. Volume 123(2020)
• Publication Date: 2020-07
• Subjects: Vertical drain -- Smear zone -- Well resistance -- Large-strain theory -- Radial consolidation -- Creep settlement; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2020.103602
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: The consolidation characteristics of vertical drain (VD)-improved soft deposits depend on the smear zone, well resistance, and creep effects. In this study, we propose a new solution for radial consolidation of VD-improved soft deposits that applies large-strain theory in consideration of smear zone and well resistance effects. A simplified Hypothesis B method is also proposed for calculating the consolidation settlement of VD-improved soft deposits exhibiting creep under different stress states, including overconsolidated and normally consolidated. The proposed solution was verified through application to two case histories of embankments on VD-improved deposits. The numerical analysis showed that the proposed solution provided a satisfactory result that was close to the measured data.