Numerical analyses of an experimental excavation supported by panels of lime-cement columns

Backcalculation of Finite-Element Modeling Based on Field Measurements Results of Excavation in Steel Sheet Pile Walls

“…The shadings of the vertical plastic strains ( Figures 7,11,15,18,22,26,29,34,and 37) show that excessive plastic strains are localized in the peat layer which has very poor geotechnical characteristics. The largest horizontal plastic strains are located on the top of the soil ground in contact with steel sheet pile walls (Figures 8,12,16,19,23,27,30,35,and 38). This behavior is justified by the fact that the steel sheet pile walls are blocked at their apex inside the excavation and the first horizontal stresses appear on the first parts in contact with the soil ground.…”

“…The improvement of the consideration in an optimized way in stochastic analysis was conducted in order to obtain shear strength parameters allowing a better elucidation of the slope failure mechanism and become a fundamental indicator for more effective filtering of field remedial data [29]. Bozkurt et al [30] performed finite element calculations involving the reconstituted materials to study the behavior of a deep excavation supported by sheet pile walls and columns composed of a mixture of two hydraulic binders. Huge displacements associated with installation methods have been observed despite the fact that the application of this lime-cement deep mixing technique in deep excavations improves soil parameters in its natural state [30].…”

“…Bozkurt et al [30] performed finite element calculations involving the reconstituted materials to study the behavior of a deep excavation supported by sheet pile walls and columns composed of a mixture of two hydraulic binders. Huge displacements associated with installation methods have been observed despite the fact that the application of this lime-cement deep mixing technique in deep excavations improves soil parameters in its natural state [30]. In the study, the behavior of the structure composed of soil stabilized by two hydraulic binders was studied using the finite element technique by progressive disbursement of the soil layers.…”

“…In the study, the behavior of the structure composed of soil stabilized by two hydraulic binders was studied using the finite element technique by progressive disbursement of the soil layers. The data and modeling parameters were calibrated according to the results of actual measurements carried out at the site [30]. The lessons learned in these modeling show that taking into account the installation mode in the calculations makes it possible to predict in a realistic and optimized way the strains on the sheet pile walls, the evolution of the excess pore pressure, as well as the structural forces in the struts [30].…”

Evaluation of Stability of Embankment Constructed on Soft Consolidating Soil with Lime–CFG Composite Column System

“…It has larger equivalent stiffness and hence reduces the vertical stresses in the soft soil. Combinations of lime and CFG [4][5][6], lime and cement [7,8], lime and fly ash [9], soil and cement [10][11][12], lime, soil and cement [5] are few of the composite materials suggested for columns. One such technique of composite system consists of lime column and CFG column.…”