An Analytical Stabilization of Landslide on Road Foundation Soft Ground Improvement by SDCM Columns
DOI:
https://doi.org/10.32628/IJSRSET2310559Keywords:
SDCM, FEM, road foundation, SLOPE/W, Mekong DeltaAbstract
The deep cement mixing (DCM) method is a solution for reinforcing soft ground and has been applied in many countries. In Vietnam, the DCM method has also been experimented on and obtained positive results, especially in medium-scale and below-construction sites in the Mekong Delta where there is a thick layer of soft sediment soil. However, stiffened deep cement mixing (SDCM) column has barely been researched and experimented on. For this reason, the research on theory and design method for the SDCM column, especially using the SDCM column for reinforcing road foundation on soft ground is the main topic of this paper. The result from analysis using the finite element method has shown that the factor of safety of soft ground reinforced by the SDCM column has increased from 0.532 to 1.746.
References
- Nguyen, A. T. and Nguyen, N. T. Study on Stress Distribution in Soft Ground Consolidated with Deep Cement Mixing Columns under Road Embankment. Civil Engineering and Architecture, Vol. 8, No. 6, 2020, pp. 1251-1265.
- Nguyen, N. T. and Nguyen, A. T. A study on the calculation of deformation of cement deep mixing columns that stabilize soil erosion and landslides on river roads. International Journal of GEOMATE, Vol. 23, Iss. 100, 2023, pp. 52-61.
- Lin, K. Q. and Wong, I. H., Use of deep cement mixing to reduce settlements at bridge approaches, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 125, Iss. 4, 1999.
- Nguyen, N. T. and Nguyen, A. T. Soft Ground Improvement below Bridge Approach Foundation using Cement Deep Mixing columns combined with Geotextile. Journal of Applied Engineering Science, Vol. 22, No. 2, 2023.
- Dong, P. et al, Bearing capacity and settlement of concrete-cored DCM pile in soft ground. Geotechnical & Geological Engineering, Vol. 22, 2004, pp. 105-119.
- Voottipruex, P. et al, Behavior and Simulation of Deep Cement Mixing (DCM) and Stiffened Deep Cement Mixing (SDCM) Piles Under Full Scale Loading. Soils and Foundations, Vol. 51, Iss. 2, 2011, pp. 307-320.
- Voottipruex, P. et al, Performances of SDCM and DCM walls under deep excavation in soft clay: Field tests and 3D simulations. Soils and Foundations, Vol. 59, Iss. 6, 2019, pp. 1728-1739
- Li, H. et al, Field investigation of the performance of composite foundations reinforced by DCM-bored piles under lateral loads. Construction and Building Materials, Vol. 170, 2018, pp. 690-697.
- Zhang, C. et al, A modified equal-strain solution for consolidation behavior of composite foundation reinforced by precast concrete piles improved with cement-treated soil. Computers and Geotechnics, Vol. 150, 2022, 104905.
- Yu, J. et al, Shaft capacity of prestressed high strength concrete (PHC) pile-cemented soil column embedded in clayey soil. Soils and Foundations, Vol. 61, Iss. 4, 2021, pp.1086-1098.
- Chen, S. et al, Investigation on behavior of anchored sheet pile quay wall improved by cement-soil: Centrifuge and numerical modeling. Ocean Engineering, Vol. 279, 2023, 114467.
- Zhu, S. et al, Analytical modeling for the load-transfer behavior of stiffened deep cement mixing (SDCM) pile with rigid cap in layer soils. Computers and Geotechnics, Vol. 144, 2022, 104618.
- Wongglert, A. et al, Bearing capacity and failure behaviors of floating stiffened deep cement mixing columns under axial load, Soils, and Foundations, Vol. 58, Iss. 2, 2018, pp. 446-461.
Downloads
Published
Issue
Section
License
Copyright (c) IJSRSET
This work is licensed under a Creative Commons Attribution 4.0 International License.