Load transfer mechanism and deformation of reinforced piled embankments

Review of Geosynthetic-Reinforced Pile-Supported (GRPS) embankments - parametric study and design methods

“…Load efficiency is influenced by a host of parameters and increases with the uniform surcharge increases and with the use of high-quality fill material in the platform [13], and this is consistent with van Eekelen's results. Fagundes et al [14] conducted a series of centrifuge tests. The results showed that the load efficiency reaches 100% in all the tests.…”

“…The differential settlement at the embankment surface decreases as the embankment height increases, pile spacing decreases, and geosynthetic stiffness increases. The minimum embankment height to prevent the settlements equal to 2.1 (s-a) and the embankment height should be greater than 2.5 the height of a soil arch to avoid the differential settlements [14]. Al-Ani and based on a laboratory test model found that the settlement of the soft soil reduces when fill material with high effective friction angle is used while the effect of dilatancy angle ( ) on the soft soil settlements is small in comparison with that of effective friction angle [13].…”

Comparative Analysis of Load Responses and Deformation for Crust Composite Foundation and Pile-supported Embankment

“…Actually, many researchers have carried out different kinds of model and field tests (Blanc et al 2014;Chen et al 2016;Erfen et al 2017;Fagundes et al 2017;Zheng et al 2011) and different analytical methods (Chen et al 2008;Hewlett & Randolph 1988;Liu et al 2017;Zhang et al 2012) to study the pile-supported embankments. More recently, investigators have mainly focused on studying the effect of pile-supported embankments using finite element method (FEM) (Ariyarathne & Liyanapathirana 2015;Huang & Han 2009;Stewart & Filz 2014;Yapage et al 2014;Zhuang et al 2012).…”

“…Two method was proposed to calculate stress reduction ratio (S3D), one of them is Hewlett and Randolph's arching model (referred to as the H&R method in the remainder of the paper) incorporated in the British Standards BS8006 (BS 2010). The H&R method (Fagundes et al 2017;Zhuang et al 2012) regards the arching effect as a single hemispherical dome transferring loads to the pile. The other is the BS8006 with some modification by van Eekelen et al (2011).…”

A closed-form solution for column-supported embankments with geosynthetic reinforcement

“…A column supported embankment (Ali et al, 2012;Okyay et al, 2014;Basack et al, 2015;Bian et al, 2016;Liu and Rowe, 2016;Liyanapathirana and Ekanayake, 2016;Briançon and Simon, 2017;Das and Deb, 2017a;Jelušič and Žlender, 2018) is commonly used when freeways or railways pass through soft soil areas, or to support storage tanks and bridge abutments (Naggar et al, 2015). This technique can reduce settlement (Tan et al, 2008;Yapage and Liyanapathirana, 2014;Yapage et al, 2015;Chen et al, 2016a;Das and Deb, 2017b;King et al, 2017) and accelerate the construction process (Briançon and Simon, 2012;Fagundes et al, 2017;Nguyen et al, 2017). However, the most significant drawback of this approach is the possible localized differential settlement at the surface of the embankment, caused by the difference between the modulus of the columns and that of the subsoil (Taha et al, 2014;Tai et al, 2018).…”