- Title
- Coupling effects on class C predictions of soft soil settlements
- Creator
- Huang, Shan; Huang, Jinsong; Kelly, Richard; Jiang, Shui-Hua; Jonse, Merrick; Kamruzzaman, A. H. M.
- Relation
- ARC.LP200100367 https://purl.org/au-research/grants/arc/LP200100367
- Relation
- Acta Geotechnica Vol. 20, p. 723-742
- Publisher Link
- http://dx.doi.org/10.1007/s11440-024-02422-9
- Publisher
- Springer
- Resource Type
- journal article
- Date
- 2025
- Description
- In uncoupled consolidation analysis, settlement and pore water pressure are solved independently, whereas in coupled analysis, they are solved simultaneously to ensure continuity (i.e., the volume change in soil due to compression must equal the water volume change caused by dissipation). This study investigates the coupling effects of soil deformation and pore water pressure dissipation in the back analysis of soft soil settlements. It further evaluates the suitability of both coupled and uncoupled constitutive models with different types of monitoring data, providing practical guidance for selecting consolidation models and achieving reliable long-term predictions. The one-dimensional governing equations for soft soil consolidation, incorporating prefabricated vertical drains and creep deformation, are first reviewed. A case study of a trial embankment in Ballina, New South Wales, Australia, is then used to demonstrate the impact of coupling effects and monitoring data on settlement predictions. The results show that considering coupling effects not only improves long-term settlement predictions but also reduces uncertainties in the updated soil parameters, especially when both settlement and pore water pressure data are used.
- Subject
- Bayesian back analysis; coupling and uncoupling; embankment settlement prediction; one-dimensional consolidation; PVDs; soft soil creep
- Identifier
- http://hdl.handle.net/1959.13/1519735
- Identifier
- uon:57429
- Identifier
- ISSN:1861-1125
- Rights
- This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
- Language
- eng
- Full Text
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