Simulation of Sequential Construction of Embankments on Reinforced Soft Clay Foundation
- 97 Downloads
Single-stage construction technique and multi-staged construction technique are two embankment-construction techniques that are generally used on soft soils. A single-stage construction technique is usually used for fast construction of comparatively low-height embankments. A multi-staged construction technique is mostly used for construction of high embankments. In this study, the PLAXIS software is used to conduct a 2-D finite element analysis that evaluates the influence of sequential construction of embankments. Data from a Lebuhraya Pantai Timur2 highway project in Malaysia were investigated. For every phase of embankment construction, the stress concentration ratio, the safety factor, and the overall and differential settlement have been estimated. According to the results of this study, using the stage construction technique improves the shear strength of the soil, which was evaluated in terms of the measured settlement. On the other hand, the sequence construction analysis reveals a vaguely different safety factor and stress concentration ratio against the stability observed in the results derived through the non-sequential construction technique. Lastly, the objective of the study is to provide sufficient information on the behaviour of a multi-stage construction procedure of an embankment carried out over a soft clay soil and strengthened by stone columns.
KeywordsStage construction analysis Embankment Stone column Settlement Stability Stress concentration ratio
The authors gratefully acknowledge the financial support provided by Reinforced Fire-Proof Concrete Tunnel Lining—Universiti Kabangsaan Malaysia UKM under research Grant DIP-2014-019 in this work.
- 1.Burman A, Kumar S, Himanshu N, Maity D (2015) Simulation of sequential construction of embankment by finite element method. Asian J Civ Eng 16(3):347–367Google Scholar
- 4.Huzjak R, Friend E, Prochaska A (2013) Stability analyses for a 200-foot-high dam requiring staged construction. In: Geo-congress, pp 1119–1128Google Scholar
- 6.Sura JM, Othman MA (2011) Case history of road embankment construction over very weak clay. In: Geo-frontiers, ASCE, pp 3304–3311Google Scholar
- 7.Tao Y, Li G-w, Yang W-q (2004) Settlement prediction of stage constructed embankment on soft ground based on the hyperbolic method. J Rock Soil Mech 25(10):1551–1554Google Scholar
- 10.Aljanabi QA (2014) Behavior of stone column embedded in soft clays under embankment by using finite element and artificial intelligent methods”. Ph.d thesis, Universiti Kebangsaan MalaysiaGoogle Scholar
- 11.Carreira M, Almeida M, Pinto A (2016) A numerical study on the critical height of embankments supported by geotextile encased granular columns. Procedia Engineering, Advances in Transportation Geotechnics 3. In: The 3rd international conference on transportation geotechnics 143(Ictg), pp 1341–1349Google Scholar
- 12.Bouassida M, Carter JP (2014) Optimization of design of column-reinforced foundations. Int J Geomech 14(6):4014–4031. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000384 CrossRefGoogle Scholar
- 17.Raju VR, Wegner R, Krishna YH (2004) Ground Improvement using Vibro Replacement in ASIA 1994 to 2004. A 10 years review. In: 5th international conference on ground improvement techniqueGoogle Scholar