The Effect of Relative Density of Geosynthetic Encased Stone Columns on the Bearing Capacity and Consolidation of Soft Soil
DOI:
https://doi.org/10.35334/be.v10i1.574Keywords:
bearing capacity, finite element method, geosynthetic-encased stone column, settlement, soil improvementAbstract
Building roads on soft soil is a problem that must be faced due to the behavior of soft soil. The low bearing capacity is the primary issue, accompanied by significant settlement due to the soil's high compressibility. Soft soil is present in the Indrapura-Kisaran Toll Road Construction Project, ranging from STA 111+505 to STA 112+300, so reinforcement is necessary. The reinforcement method used is Geosynthetic Encased Stone Columns (GESC). The density of the GESC material used in this method needs to be examined to determine the effectiveness of GESC in reducing settlement and increasing soil-bearing capacity. The analysis process conducted in this study involves analyzing reinforcement using GESC with empirical and numerical methods. This study uses variations in the relative density of the column material at 25%, 50%, 75%, and 100%. After reinforcement, the soil-bearing capacity increased by 280,37 to 361,71%. Additionally, GESC reinforcement was also able to reduce settlement by up to 64,96% using the analytical method and 41,6% using the numerical method, with a consolidation time reduction of 93,38% to 94,52%. The reduction in relative soil density causes settlement to increase by ±7,2% because the friction angle of the column decreases.
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Alexiew, D., Raithel, M., Schimmel, L., & Schröer, S. (2015). Geotextile Encased Columns (GEC) as pile-similar foundation elements: Basics, specifics, case studies. 40th Annual Conference on Deep Foundations, 441–452.
Alexiew, D., & Thomson, G. (2013). Foundations on Geotextile Encased Granular Columns: Overview, Experience, Perspectives. Proceedings of the International Symposium on Advances in Foundation Engineering, 401–407. https://doi.org/10.3850/978-981-07-4623-0_115
Almeida, M. S. S., Hosseinpour, I., Riccio, M., & Alexiew, D. (2015). Behavior of Geotextile-Encased Granular Columns Supporting Test Embankment on Soft Deposit. Journal of Geotechnical and Geoenvironmental Engineering, 141(3). https://doi.org/10.1061/(ASCE)GT.1943-5606.0001256
Ameratunga, J., Sivakugan, N., & Das, B. M. (2016). Developments in Geotechnical Engineering Correlations of Soil and Rock Properties in Geotechnical Engineering. http://www.springer.com/series/13410
Bergado, D. T., & Lam, F. L. (1987). Full Scale Load Test of Granular Piles with Different Densities and Different Proportions of Gravel and Sand on Soft Bangkok Clay. Soils and Foundations, 27(1), 86–93. https://doi.org/10.3208/sandf1972.27.86
Bowles, J. E. (1997). Foundation Analysis and Design (5th ed.). The McGraw-Hill Companies.
Chen, J.-F., Li, L.-Y., Xue, J.-F., & Feng, S.-Z. (2015). Failure mechanism of geosynthetic-encased stone columns in soft soils under embankment. Geotextiles and Geomembranes, 43(5), 424–431. https://doi.org/10.1016/j.geotexmem.2015.04.016
Fakher, N. A., & Fakhruldin, M. K. (2021). EXPERIMENTAL STUDY OF RELATIVE DENSITY EFFECT ON BEARING CAPACITY OF SAND REINFORCED WITH GEOGRID. Kufa Journal of Engineering, 12(3), 46–55. https://doi.org/10.30572/2018/kje/120304
Gouw, T. L. (2015). Importance of Elongation Factor in Determining Geosynthetics Stiffness for Finite Element Calculation. International Conference on Landslides and Slope Stability, B81-B8-6.
Han, J. (2015). Principles And Practice of Ground Improvement. John Wiley & Son, Inc.
Hayati, J., Syuhada, S., & Shahroni, C. (2025). Analisis Pengaruh Kuat Tarik Geosintetik Pada Perkuatan Tanah Lunak Metode Geosynthetic Encased Stone Columns (GESC). Borneo Engineering: Jurnal Teknik Sipil, 9(1), 82–93. https://doi.org/10.35334/be.v9i1.32
Herle I., Wehr J., & Arnold M. (2008). Soil improvement with vibrated stone columns: influence of pressure level and relative density on friction angle. The 2nd International Conference on the Geotechnics of Soft Soils, 235–240.
Hosseinpour, I., Almeida, M. S. S., & Riccio, M. (2016). Ground improvement of soft soil by geotextile-encased columns. Proceedings of the Institution of Civil Engineers - Ground Improvement, 169(4), 297–305. https://doi.org/10.1680/jgrim.16.00009
Hosseinpour, I., Riccio, M., & Almeida, M. S. S. (2017). Verification of a plane strain model for the analysis of encased granular columns. Journal of GeoEngineering, 12(4), 167–173. https://doi.org/10.6310/jog.2017.12(4).1
Miranda, M., Da Costa, A., Castro, J., & Sagaseta, C. (2015). Influence of gravel density in the behaviour of soft soils improved with stone columns. Canadian Geotechnical Journal, 52(12), 1968–1980. https://doi.org/10.1139/cgj-2014-0487
Murugesan, S., & Rajagopal, K. (2006). Geosynthetic-encased stone columns: Numerical evaluation. Geotextiles and Geomembranes, 24(6), 349–358. https://doi.org/10.1016/j.geotexmem.2006.05.001
Raithel, M., & Kempfert, H. (2000). Calculations models for dam foundations with geotextile coated sand columns. The International Conference on Geotechnical & Geological Engineering, 347–352.
Saputra, A., Rokhman, Rini, R. P., Iqbal, & Jafaruddin, A. J. (2025). Peningkatan Nilai Kepadatan Tanah Lunak yang Dicampur dengan Limbah Pasir Galian C dan Air Laut. Menara: Jurnal Teknik Sipil, 20(1), 75–83. https://doi.org/10.21009/jmenara.v20i1.51914
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