Performance of Geosynthetic-Encased Stone Columns in Embankment Construction: Numerical Investigation

Settlement behavior of embankment on geosynthetic-encased stone column installed soft ground – A numerical investigation

“…Details of the modeling approach adopted in this study can be found in Yoo and Kim (2009) and Yoo (2010).…”

“…The concept of encasing granular columns with geosynthetics to increase their capacity has been acknowledged by numerous researchers (Raithel and Kempfert, 2000;Kempfert et al, 2002;Raithel et al, 2002;Alexiew et al, 2005;Brokemper et al, 2006;Murugesan and Rajagopal, 2006, 2007, 2010Lee et al, 2007;Yoo et al, 2007;Gniel and Bouazza, 2009;Hong, 2009, 2014;Yoo and Kim, 2009;Yoo, 2010;Yoo and Lee, 2012;Zhang et al, 2012;Almeida et al, 2013;Dash and Bora, 2013;Elsawy, 2013;Maheshwari and Chauhan, 2013;McCabe et al, 2013;Shahu, and Reddy, 2014;Ali et al, 2014). In addition to its ground improvement effect in terms of load carrying capacity, Tang et al (2013) has demonstrated the effectiveness of geosynthetic encased stone columns for ground improvement of liquefaction mitigation.…”

Failure mechanism of geosynthetic-encased stone columns in soft soils under embankment

“…In that case, geosynthetic (i.e. geotextile or geogrid) encased stone columns (GECs) overcome the shortcomings and provide lateral confinement to the stone materials to improve the bearing capacity of the soils (Raithel et al, 2005;Yoo, 2010;Zhang et al, 2012;Dash and Bora, 2013;Elsawy, 2013;Wu and Hong, 2014).…”

Multilayered low-strength geogrid-reinforced piled embankment

“…The trend of increasing a 0 with depth is taken into consideration by dividing the clay layer into 20 vertical sections of equal thickness and assigning the computed a 0 value at mid-depth for each vertical section (Yoo, 2010).…”

“…However, full 3D numerical modelling can usually be very complicated, needs computers with a high processing power and also can be extremely time consuming depending on the complexity of the problem (Ariyarathne et al, 2012). Therefore, for practical limitation, many researchers have used the unit cell concept and 3D column model to study the performance of piled embankments (Bhasi and Rajagopal, 2014;Jenck et al, 2009;Yoo, 2010;Yoo and Kim 2009;Zhuang and Wang, 2015).…”