Experimental And Numerical Evaluation Of Soil-Cement Column Performance In Stabilizing Soft Soil Under Seismic Loading Conditions

 In this research, comprehensive studies have been carried out by laboratory and numerical modeling methods on the variables affecting soil improvement with soil-cement columns under different conditions of overhead and seismic loading. experimental studies are aimed at evaluating the performance of soil-cement columns in soft ground stabilization under two conditions of rigid footing and embankment fill, and based on the results, the numerical modeling was defined and validated (numerical modeling error less than 8%).
The results of experimental studies showed that the stabilization by using soil-cement column under embankment fill condition caused more stabilization of soft soil compared to the condition of rigid footing and the amount of settlement decreased by 75% and 55% respectively. The results of numerical modeling showed that the use of soil-cement column has improved the seismic behavior of soft soil and the average of settlement under the loading of 5 major earthquakes has decreased by 54.13% under rigid footing conditions and 71.63% under embankment fill.