Effect of Adding Surcharge Load Stress on the Acceleration of Soft Soil Consolidation
DOI:
https://doi.org/10.47134/scbmej.v1i4.2905Keywords:
GeoStudio, Surcharge Load, ConsolidationAbstract
One type of soil that needs to be considered is soft soil. Soft soil has characteristics of large compression, long consolidation time, and low bearing capacity. Soft soil can be overcome using soil improvement methods to accelerate consolidation by using Surcharge Load coupled with Prefabricated Vertical Drains (PVD). This research uses GeoStudio 2018 software to determine how the addition of surcharge load to the embankment will affect the consolidation of soft soil. Modelling in GeoStudio is done using the Sigma/W model with the type of material model in the original soil using the Soft Clay model. The results of the analysis will be presented with a graph showing the relationship between the amount of settlement (m) and the settlement time (days). The results of the analysis were varied based on three surcharge load height models, namely 1.25 m, 2.50 m, and 3.50 m. The settlement is taken when the degree of consolidation has reached 90% (U90%). The time required to know the degree of consolidation has reached 90% is taken from the relationship graph of pore water pressure (PWP) with time. When the pore water pressure has dropped and has not changed, it is assumed that the degree of consolidation has reached 100%, therefore the days needed to reach 90% consolidation degree can be known. From the results of the analysis using Soft Clay material, a decrease of 0.71 m, 0.79 m, 0.86 m was obtained with the time to reach U90% for 88 days.
References
An Engineering Methodology. (2013). Stress-Deformation Modeling with SIGMA/W Edition. GEO-SLOPE International Ltd
Boucias, Z. K. (2024). A Comparison of Vertical Earth Pressure and Settlement Data Collected from Two Long-Term Ground Improvement Monitoring Projects. Geotechnical Special Publication, 2024, 128–136. https://doi.org/10.1061/9780784485415.014 DOI: https://doi.org/10.1061/9780784485415.014
Drbe, O. (2023). Numerical Evaluation of Drag Force on Integral Abutment Piles. Journal of Bridge Engineering, 28(9). https://doi.org/10.1061/JBENF2.BEENG-5988 DOI: https://doi.org/10.1061/JBENF2.BEENG-5988
Hanna, A. M. (2024). Neutral plane of single pile in clay subjected to surcharge loading using the “critical state soil mechanics” (CSSM). International Journal of Geotechnical Engineering. https://doi.org/10.1080/19386362.2024.2353415 DOI: https://doi.org/10.1080/19386362.2024.2353415
Hansbo, S. (1979). Consolidation of Clay By Band-Shaped Prefabricated Drains. Ground Engineering, 12(5), 16–18.
Hansbo, S. (2015). Experience of Consolidation Process from Test Areas with and without Vertical Drains. Ground Improvement Case Histories: Embankments with Special Reference to Consolidation and Other Physical Methods, 33–82. DOI: https://doi.org/10.1016/B978-0-08-100192-9.00002-8
Hardiyatmo, H. C. (2018). Mekanika Tanah 2 (Enam). Gadjah Mada University Press, Yogyakarta.
Hardiyatmo, H. C. (2020). Perbaikan Tanah. Gadjah Mada University Press, Yogykarta.
Kapor, M. (2023). DIC assessment of foundation soil response for different reinforcement between base and soft subgrade layer – Physical modeling. Geotextiles and Geomembranes, 51(3), 390–404. https://doi.org/10.1016/j.geotexmem.2023.01.003 DOI: https://doi.org/10.1016/j.geotexmem.2023.01.003
Lei, M. (2023). The Influences of Vacuum–Surcharge Preloading on Pore Water Pressure and the Settlement of a Soft Foundation. Sustainability (Switzerland), 15(9). https://doi.org/10.3390/su15097669 DOI: https://doi.org/10.3390/su15097669
Li, S. (2024). Time-dependent deviation of bridge pile foundations caused by adjacent large-area surcharge loads in soft soils and its preventive measures. Frontiers of Structural and Civil Engineering, 18(2), 184–201. https://doi.org/10.1007/s11709-024-1047-5 DOI: https://doi.org/10.1007/s11709-024-1047-5
Liang, F. (2024). Time-dependent longitudinal responses of a shield tunnel induced by surcharge load: Theoretical prediction and analysis. Underground Space (China), 14, 219–238. https://doi.org/10.1016/j.undsp.2023.05.013 DOI: https://doi.org/10.1016/j.undsp.2023.05.013
Lin, Y. (2024). Load-bearing response of deep content mixing soft soil composite foundation based on the geotechnical centrifugal model test. IOP Conference Series: Earth and Environmental Science, 1336(1). https://doi.org/10.1088/1755-1315/1336/1/012006 DOI: https://doi.org/10.1088/1755-1315/1336/1/012006
Pradhan, B. (2023). FEM Analysis of Granular Pile Made with Alternate Materials. Transportation Infrastructure Geotechnology, 10(6), 1284–1320. https://doi.org/10.1007/s40515-022-00266-y DOI: https://doi.org/10.1007/s40515-022-00266-y
Saikia, R. (2024). Load Carrying Mechanism of Geocell Reinforced Embankment on Soft Soil. Transportation Research Record. https://doi.org/10.1177/03611981241230317 DOI: https://doi.org/10.1177/03611981241230317
Sharmeelee, S. (2024). Ground Improvement Techniques for Soft Soil. Lecture Notes in Civil Engineering, 386, 63–71. https://doi.org/10.1007/978-981-99-6026-2_6 DOI: https://doi.org/10.1007/978-981-99-6026-2_6
Shen, B. (2023). A numerical analysis of inclination and rectification of ramp-bridge piers adjacent to surcharge load in soft clay area. Scientific Reports, 13(1). https://doi.org/10.1038/s41598-023-36737-6 DOI: https://doi.org/10.1038/s41598-023-36737-6
Wang, J. (2023). One-Dimensional Consolidation Properties of Soft Clay under Multi-Stage Loading. Applied Sciences (Switzerland), 13(18). https://doi.org/10.3390/app131810340 DOI: https://doi.org/10.3390/app131810340
Wei, L. (2023). Mechanical Response Analysis for an Active–Passive Pile Adjacent to Surcharge Load. Applied Sciences (Switzerland), 13(7). https://doi.org/10.3390/app13074196 DOI: https://doi.org/10.3390/app13074196
Wu, P. C. (2024). Load transfer mechanism of geotextile-reinforced sand layer over semirigid column-improved soft soil. Acta Geotechnica, 19(5), 2855–2871. https://doi.org/10.1007/s11440-023-02213-8 DOI: https://doi.org/10.1007/s11440-023-02213-8
Xu, X. (2024). Comparison of Load Transfer Law of Pipe Pile between O-Cell Test and Traditional Static Load Test. Water (Switzerland), 16(6). https://doi.org/10.3390/w16060826 DOI: https://doi.org/10.3390/w16060826
Yuan, W. (2024). Settlement prediction method for staged preloading on soft clay ground. Journal of Southeast University (English Edition), 40(1), 41–48. https://doi.org/10.3969/j.issn.1003-7985.2024.01.005
Zhang, Y. (2023). Model tests on deformation and failure characteristics of shield tunnel in soil-rock composite stratum under surface surcharge. Journal of Railway Science and Engineering, 20(11), 4277–4287. https://doi.org/10.19713/j.cnki.43-1423/u.T20222174
Zhang, Z. (2023). Influence of column position on stability of stiffened deep mixed column-supported embankment over soft clay. Acta Geotechnica, 18(10), 5535–5550. https://doi.org/10.1007/s11440-023-01937-x DOI: https://doi.org/10.1007/s11440-023-01937-x
Zong, M. (2024). Analytical solution for radial consolidation of combined electroosmotic, vacuum, and surcharge preloading considering smear effects. International Journal of Geomechanics, 24(7). https://doi.org/10.1061/IJGNAI.GMENG-9196 DOI: https://doi.org/10.1061/IJGNAI.GMENG-9196
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