Improving Bearing Capacity of Weak Soils: A Review
Source: By:Samaila Saleh
DOI: https://doi.org/10.30564/jcr.v3i1.3262
Abstract:Weak soils, such as soft clay and loose sand, have a poor bearing capacity, making them incapable of bearing the load of superstructures that will be imposed on them. As a result, engineers must have a solution to the issue of poor bearing capacity in weak soils before embanking into building on them. This paper reviewed the use of stone columns, piled rafts, and geogrids for improving the bearing capability of weak soils. Important findings from recent research are also discussed. From the review of the previous researcher’s findings, it was found that modelling approaches such as physical modelling (full scale, centrifuge, laboratory scale) and numerical modelling are used to study bearing capacity improvement.
References:[1] Sadaoui O, Bahar R. Field measurements and back calculations of settlements of structures founded on improved soft soils by stone columns. Eur J Environ Civ Eng 2017;23:85 111. https://doi.org/10.1080/19 648189.2016.1271358. [2] Dheerendra Babu MR, Nayak S, Shivashankar R. A Critical Review of Construction, Analysis and Behaviour of Stone Columns. Geotech Geol Eng 2013;31:1-22. https://doi.org/10.1007/s10706-012-9555-9. [3] Hughes JMO, Withers NJ. Reinforcing of soft cohesive soils with stone columns. Gr Eng 1974;7:42-9. [4] Alamgir M, Miura N, Poorooshasb HB, Madhav MR. Deformation analysis of soft ground reinforced by columnar inclusions. Comput Geotech 1996;18:267-90. https://doi.org/10.1016/0266-352X(95)00034-8. [5] Adalier K, Elgamal A. Mitigation of liquefaction and associated ground deformations by stone columns. Eng Geol 2004;72:275-91. https://doi. org/10.1016/j.enggeo.2003.11.001. [6] Abdel-Azim OA, Abdel-Rahman K, El-Mossallamy YM. Numerical investigation of optimized piled raft foundation for high-rise building in Germany. Innov Infrastruct Solut 2020;5:1-11. https://doi.org/10.1007/s41062-019-0258-4. [7] Katzenbach R, Choudhury D. ISSMGE Combined Pile-Raft Foundation Guideline. 2013. [8] Sanjei C, De Silva LIN. Numerical modelling of the behaviour of model shallow foundations on geocell reinforced sand. 2016 Moratuwa Eng. Res. Conf., IEEE; 2016, p. 216-21. https://doi.org/10.1109/ MERCon.2016.7480142. [9] Demir A, Yildiz A, Laman M, Ornek M. Experimental and numerical analyses of circular footing on geogrid-reinforced granular fill underlain by soft clay. Acta Geotech 2014;9:711-23. https://doi.org/10.1007/s11440-013-0207-x. [10] Alawaji HA. Settlement and bearing capacity ofgeogrid-reinforced sand over collapsible soil. Geotext Geomembranes 2001;19:75-88.https ://doi.org/10.1016/s0266 -1144(01)00002 -4. [11] Nayak S, Balaji M, Preetham HK. A Study on the Behaviour of Stone Columns in a Layered Soil System. Transp Infrastruct Geotechnol 2020;7:85-102. https://doi.org/10.1007/s40515-019-00090-x. [12] Madun A, Meghzili SA, Tajudin S, Yusof MF, Zain alabidin MH, Al-Gheethi AA, et al. Mathematical solution of the stone column effect on the load bearing capacity and settlement using numerical analysis. J Phys Conf Ser 2018;995:012036. https://doi. org/10.1088/1742-6596/995/1/012036. [13] Fathi E, Mohtasham R. Numerical analysis of the reinforced stone column by geosynthetic on stability of embankment. World Congr Civil, Struct Environ Eng 2016:1- 8. https://doi.org/10.11159/icgre16.112. [14] Şahinkaya F, Vekli M, Çadır CC. Numerical analysis under seismic loads of soils improvement with floating stone columns. Nat Hazards 2017;88:891- 917. https://doi.org/10.1007/s11069-017-2897-0. [15] Samadhiya NK. Numerical Analysis of Anchored Granular Pile ( AGP ) under Tensile Loads. 19th Int. Conf. Soil Mech. Geotech. Eng. Seoul, 2017, p. 3231-4. [16] Kardgar H. Investigation of the bearing capacity of foundations on encased stone columns using finite element method. Int J Integr Eng 2018;10:103- 8. https://doi.org/10.30880/ijie.2018.10.01.016. [17] Naseer S, Sarfraz Faiz M, Iqbal S, Jamil SM. Laboratory and numerical based analysis of floating sand columns in clayey soil. Int J Geo-Engineering 2019;10:1-16. https://doi.org/10.1186/s40703-019-0106-6. [18] Card GB, Carter GR. Case history of a piled embankment in London’s Docklands. Int J Rock Mech Min Sci Geomech Abstr 1996;33:A136. https://doi. org/10.1016/0148-9062(96)87158-0. [19] Padfield CJ. Settlement of Structures on Clay Soils. CIRIA, Spec Publ 1983;27. [20] Reid WM, Buchanan NW. Bridge approach support piling. Piling Gr. Treat. Inst. Civ. Eng., 1983, p.267-274. [21] Banerjee R, Bandyopadhyay S, Sengupta A, Reddy GR. Settlement behaviour of a pile raft subjected to vertical loadings in multilayered soil. Geomech Geoengin 2020;00:1-15. https://doi.org/10.1080/17 486025.2020.1739754. [22] Bağriaçik B, Epsİlelİ SE, Pinarci E, Belen M. Comparison of Bearing Capacity of Piled Raft Foundations Consisting of Different Number of Piles under Static and Repetitive Loads. Int J Comput Exp Sci Eng 2018;4:39-42. https://doi.org/10.22399/ijcesen.477263. [23] Sharma JK, Sanadhya RR. Analysis of rigid raft overlying the granular pile with the effect of stiffness of bearing stratum. Geomech Geoengin 2020:1-22. https://doi.org/10.1080/17486025.2020. 1716083. [24] Hamed M, Emirler B, Canakci H, Yildiz A. 3D Numerical Modeling of a Single Pipe Pile Under Axial Compression Embedded in Organic Soil. Geotech Geol Eng 2020:In press. https://doi.org/10.1007/s10706-020-01299-1. [25] Majeed A, Haider O. Simulation of bearing capacity of bored piles. MATEC Web Conf 2018;162:1-12. https://doi.org/10.1051/matecconf/201816201004. [26] Zheng A. Finite element analysis on bearing capacity of post-grouting bored pile with the HS-small model and the HS model. IOP Conf Ser Earth Environ Sci 2018;189. https://doi.org/10.1088/1755-1315/189/2/022087. [27] Al-Obaidi A, Mahmood P. Ultimate capacity of piles penetrating in weak soil layers. MATEC Web Conf 2018;162:01025. https://doi.org/10.1051/matecconf/201816201025. [28] Perkins SW, Ismeik M. A Synthesis and Evaluation of Geosynthetic-Reinforced Base Layers in Flexible Pavements- Part I. Geosynth Int 1997;4:549-604. https://doi.org/10.1680/gein.4.0106. [29] Perkins SW, Ismeik M. A Synthesis and Evaluation of Geosynthetic-Reinforced Base Layers in Flexible Pavements- Part II. Geosynth Int 1997;4:605-21. https://doi.org/10.1680/gein.4.0107. [30] Barker WR. Open-Graded Bases for Airfield Pavements, Technical Report GL-87-16, Waterways Experiment Station. Vick- Sburg, Mississippi: 1987. [31] Anderson P, Killeavy M. Geotextiles and Geogrids: Cost Effective Alternate Materials for Pavement Design and Construction. Proc. Geosynth. ’89, IFAI, San Diego, California, USA: 1989, p. 353-60. [32] Barksdale RD, Brown SF, Chan F. Potential Benefits of Geosynthetics in Flexible Pavement Systems. Natl. Coop. Highw. Res. Progr. Rep. No. 315, Washington, DC, USA: 1989, p. 56. [33] Cancelli A, Montanelli F, Rimoldi P, Zhao A. Full Scale Laboratory Testing on Geosynthetics Reinforced Paved Roads. Int. Symp. Earth Reinf., Fukuoka, Kyushu, Japan: 1996, p. 573-8. [34] Jeon H-Y. Evaluation of long-term behaviours of geogrids: a review. Proc Inst Civ Eng - Gr Improv 2010;163:189-95. https://doi.org/10.1680/ grim.2010.163.4.189. [35] Das BM. Use of geogrid in the construction of railroads. Innov Infrastruct Solut 2016;1:15. https://doi. org/10.1007/s41062-016-0017-8. [36] Hamidi A, Abbeche K. Numerical Analysis of Bearing Capacity of Strip Footing Built on Geogrid-Reinforced Sand Slope Over Soft Clay Layer (revised version 3). Arab J Sci Eng 2020:In press. https://doi.org/10.1007/s13369-020-04646-9. [37] Abu El-Soud S, Belal AM. Numerical modeling of rigid strip shallow foundations overlaying geosythetics-reinforced loose fine sand deposits. Arab J Geosci 2019;12:254. https://doi.org/10.1007/s12517-019-4436-7. [38] Preetha V, Gnanasundar VM, Arulsurya M, Ramya R, Nayannathara S. Lab scale footing analysis on stabilization of black cotton soil. Int J Recent Technol Eng 2019;8:1921-6. https://doi.org/10.35940/ ijrte.C5380.118419. [39] Ahmad F, Yahaya AS, Denan F, Peng ST. Modeling of tyre-mat (8R-MAT) reinforced riverbank using PLAXIS. Japanese Geotech Soc Spec Publ 2016;2:1117-22. https://doi.org/10.3208/jgssp. ATC1-3-06. [40] Aria S, Shukla SK, Mohyeddin A. Optimum burial depth of geosynthetic reinforcement within sand bed based on numerical investigation. Int J Geotech Eng 2017;14:71-9. https://doi.org/10.1080/19386362.2017.1404202. [41] Azzam WR, Nasr AM. Bearing capacity of shell strip footing on reinforced sand. J Adv Res 2015;6:727-37. https://doi.org/10.1016/j.jare.2014.04.003.