Abstract
Differential displacement of soil foundation owing to the seismic excitation has received significant attention for evaluation infrastructure seismic resistance. The multilayered soil interaction requires investigation for the prediction and characterization of multilayered soil differential displacement. In this study, the Fast Fourier Transform (FFT) filtering method was applied for smoothing acceleration history. The numerical simulation performed using ABAQUS for soil layers interaction assessment. The statistical analysis was also applied for verification accuracy of numerical analysis and to predict the probability of the multilayered soil differential displacement occurrence. The mechanical properties of the soil, the number of soil layers, the location of soil arrangement, the type of seismic loading, and the accuracy of seismic loading were considered for modeling. The hexahedral mesh with a 500 mm size was selected in the numerical simulation. The results reveal the soil layer's interaction influence on differential displacement and flexibility of the multilayered soil. It was observed the nature of seismic loading has a significant influence on the type of soil in minimizing displacement. The soil layer arrangement controls the displacement magnitude and soil layer vibration magnitude. The conversion of the soil differential displacement to soil linear displacement and enhancement of the soil seismic stability occurred because of multilayered soil interaction and the nature of the seismic loading. This study's finding shows the statistical model verified and predicts differential displacement through a suitable application of the statistical model in geotechnical earthquake engineering. The presented method implies the appropriate design of multilayered soil. It can be alternative solutions to predict the differential displacement of multilayered soil by minimizing the number of the modeling through the applied statistical method. It characterized the conversion of the differential displacement to linear displacement by multilayered soil design occurrence.
Highlights
The multidirectional differential displacement at the soil occurs because of nonlinear excitation strain energy
The numerical analysis and shaking table were used to examine displacement of embankment rest on soft clay soil for seismic response simulation [14], the investigation was made for evaluation of cement-mixed soil [15], the stress characteristics method was used to calculate the ultimate bearing capacity of footings [16], to integrate experimental results the centrifuge test was used for evaluation impact of the thickness the saturated zone on embankments seismic resistance [17], among these techniques for soil load capacity improvement, the arrangement of the soil arrangement have not been investigated for the seismic response
From the design point of view, the main goals of the present study examined the conversion of differential displacements of the multilayers soil to linear displacement basis soil layers arrangement and interaction of multilayered soil through analysis quasi-experimental on smoothing seismic data, perform numerical analysis and using statistical analysis during the model is imposed to near-fault ground motion
Summary
The multidirectional differential displacement at the soil occurs because of nonlinear excitation strain energy. The numerical analysis and shaking table were used to examine displacement of embankment rest on soft clay soil for seismic response simulation [14], the investigation was made for evaluation of cement-mixed soil [15], the stress characteristics method was used to calculate the ultimate bearing capacity of footings [16], to integrate experimental results the centrifuge test was used for evaluation impact of the thickness the saturated zone on embankments seismic resistance [17], among these techniques for soil load capacity improvement, the arrangement of the soil arrangement have not been investigated for the seismic response. From the design point of view, the main goals of the present study examined the conversion of differential displacements of the multilayers soil to linear displacement basis soil layers arrangement and interaction of multilayered soil through analysis quasi-experimental on smoothing seismic data, perform numerical analysis and using statistical analysis during the model is imposed to near-fault ground motion
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