Treatment depth effects on settlement and deformation compatibility of dynamic compaction replacement foundations in coastal soft soil
Abstract
To investigate treatment-depth effects on settlement and deformation compatibility in coastal soft soil, a two-dimensional axisymmetric finite-element model was developed for the Huanhu Road section in Dongfang City. The dynamic compaction replacement region was represented as an equivalent linear-elastic improved zone within a total-stress framework, while two prescribed groundwater-depth cases were used only as auxiliary sensitivity checks of the adopted density-based representation. As treatment depth increased from 3.0 to 6.0 m, settlement in the treated area changed only slightly, whereas settlement in the adjacent untreated area increased from 0.252 to 0.350 m. Consequently, differential settlement increased from 0.052 to 0.132 m and the differential settlement ratio from 20.8 to 37.8%. Stress- and strain-response analyses indicate that this trend is associated with vertical stress redistribution and an increasing mismatch in compressive deformation between the treated and untreated areas. The 3.5–4.0 m cases showed a relatively balanced response between settlement control and deformation compatibility within the investigated range. This range is a model-based reference rather than a field-validated design recommendation.
Related
- A unified model embedding MCC-MLD constitutive laws in Biot’s framework for settlement of Weinan interbedded clay-sand loess foundations
- Biomechanical Compatibility With Physiological Limb-Flexion Deformation Reduces Inflammation and Neointimal Hyperplasia After Peripheral Stenting
- Traction machine-induced soil compaction: A review of stress transmission, mitigation, and predictive modelling
- LSTM-based prediction and parameter optimization analysis of sandstone subgrade compaction quality
- MacroH2A-mediated gene repression through nucleosome compaction and remodeling inhibition
BibTeX
@article{hong2026treatment,
title = {{Treatment depth effects on settlement and deformation compatibility of dynamic compaction replacement foundations in coastal soft soil}},
author = {Ke Hong and Jun Hu and Shang Jun Zhao and Ming Xiao and Lei Yang and Jun Hao Zhou},
journal = {Scientific Reports},
year = {2026},
month = oct,
doi = {10.1038/s41598-026-76337-8},
url = {https://www.nature.com/articles/s41598-026-76337-8},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Treatment depth effects on settlement and deformation compatibility of dynamic compaction replacement foundations in coastal soft soil
AU - Ke Hong
AU - Jun Hu
AU - Shang Jun Zhao
AU - Ming Xiao
AU - Lei Yang
AU - Jun Hao Zhou
PY - 2026
DA - 2026/10/21
JO - Scientific Reports
DO - 10.1038/s41598-026-76337-8
UR - https://www.nature.com/articles/s41598-026-76337-8
AB - To investigate treatment-depth effects on settlement and deformation compatibility in coastal soft soil, a two-dimensional axisymmetric finite-element model was developed for the Huanhu Road section in Dongfang City. The dynamic compaction replacement region was represented as an equivalent linear-elastic improved zone within a total-stress framework, while two prescribed groundwater-depth cases were used only as auxiliary sensitivity checks of the adopted density-based representation. As treatment depth increased from 3.0 to 6.0 m, settlement in the treated area changed only slightly, whereas settlement in the adjacent untreated area increased from 0.252 to 0.350 m. Consequently, differential settlement increased from 0.052 to 0.132 m and the differential settlement ratio from 20.8 to 37.8%. Stress- and strain-response analyses indicate that this trend is associated with vertical stress redistribution and an increasing mismatch in compressive deformation between the treated and untreated areas. The 3.5–4.0 m cases showed a relatively balanced response between settlement control and deformation compatibility within the investigated range. This range is a model-based reference rather than a field-validated design recommendation.
SN - 2045-2322
ER -