Numerical Simulation of Soil Densification Using Vibro-Stone Columns

A study of effectiveness of ground improvement for liquefaction mitigation

“…Motamed et al (2010) suggested that the simulation results based on above idealizations being made in numerical analysis are normally reasonable. Shenthan et al (2004Shenthan et al ( , 2006 proposed an analytical model of estimating the improved relative density Dr% of the soil among the installed stone columns based on the area replacement ratio (Ar%) and the initial permeability of native soil prior to improvement. With the reasonably estimated improved relative density Dr% based on the analytical model, this design method can aid in designing an appropriate stone column program without solely relying on expensive field trials.…”

“…With the reasonably estimated improved relative density Dr% based on the analytical model, this design method can aid in designing an appropriate stone column program without solely relying on expensive field trials. The design chart (in Figure 27) method proposed by Shenthan et al (2004Shenthan et al ( , 2006 is applied for the features of the stone column program in this study.…”

“…In this study, the simulations consider installing stone columns in the foundation soil zone vertically underneath the caisson quay wall. Three different area replacement ratios (Ar = 5.5%, 10% and 23%) were assumed, where Ar = (Ac/Ae)*100%, and Ac is circular area of the stone column, Ae is the tributary ( * 2 4 ), and De = equivalent diameter of the tributary area = 1.05 times the center-to-center spacing between the stone columns installed in a rectangular pattern (Elias et al, 2006;Shenthan et al, 2004Shenthan et al, , 2006. The three analyzed Ar values correspond to center-to-center spacing of 4 diameters, 3 diameters and 2 diameters of the installed stone column, respectively.…”

“…Design chart for stone column method (AfterShenthan et al, 2004Shenthan et al, , 2006 ............. 110Figure 28. The improved models of selected remedial cases ..................................................... 113 Figure 29.…”

A web-based information system for geoconstruction technologies and performance of stone column reinforced ground

“…Liquefaction mitigation due to densification is discussed in Martin (1993, 1995), Mitchell et al (1995Mitchell et al ( , 1998, , Rizzo et al (1997), Goughnour and Pestana (1998), Blewett and Woodward (2001), Adalier et al (2003), Adalier and Elgamal (2004), , Shenthan et al (2006), Noorzad et al (2007), Olgun and Martin (2008), Rollins et al (2009), and .…”