The paper presents a numerical analysis utilising FEM-based software to examine the bearing capacity of an embedded circular foundation on layered sand (dense over loose). To explore the bearing capacity of the embedded circular footing on layered sand whilst subjected to varied inclination loads, finite element analysis was employed in this work. The layered sand had an upper layer of dense sand that ranged in thickness from H/D (0.5–2.0) to an infinitely thin bottom layer of loose sand. The friction angle of the upper dense layer of sand (41°–45°) and the bottom loose layer of sand (31°–35°) and embedded depth ratio, u/D, of the circular footing are 1 and 2, as is the load inclination (0°–30°), where D is the diameter of the circular footing. The dimensionless bearing capacity improved with each load inclination as the thickness ratio increased from 0.5 to 2.00. The thickness ratios of 2.00 and 0.5, respectively, were found to have the highest and lowest dimensionless bearing capacities. As the load inclination increased from 0° to 30°, the bearing capacity decreased. The displacement pattern changed as the thickness ratio developed from 0.5 to 1.0 and 1.50 to 2.00, respectively, shifting towards the footing's centre and then back towards the application of the load. For an embedded depth ratio of 1, the bearing capacity decreased by 14–64% as the load inclination increased from 0° to 30°. Like this, the dimensionless bearing capacity decreases by 22–64% as the load inclination increases from 0° to 30° when the embedded depth ratio, u/D, is 2. The depth of influence of the displacement contours and failure pattern below the footing decreased, with the highest and lowest influence observed along the depth corresponding to 0° and 30°, respectively. The displacement contours and failure pattern shifted in the direction of load application. As the load inclination increased, the vertical settlement beneath the footing decreased, reaching its lowest level at 30°. The literature that is currently available is used to compare the validity of the results reported in this study.

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Numerical Modelling of an Embedded Circular Footing on Stratified Sand with Varying Load Inclinations

  • Surya Pratap Singh,
  • Randeep,
  • Govind Mohan

摘要

The paper presents a numerical analysis utilising FEM-based software to examine the bearing capacity of an embedded circular foundation on layered sand (dense over loose). To explore the bearing capacity of the embedded circular footing on layered sand whilst subjected to varied inclination loads, finite element analysis was employed in this work. The layered sand had an upper layer of dense sand that ranged in thickness from H/D (0.5–2.0) to an infinitely thin bottom layer of loose sand. The friction angle of the upper dense layer of sand (41°–45°) and the bottom loose layer of sand (31°–35°) and embedded depth ratio, u/D, of the circular footing are 1 and 2, as is the load inclination (0°–30°), where D is the diameter of the circular footing. The dimensionless bearing capacity improved with each load inclination as the thickness ratio increased from 0.5 to 2.00. The thickness ratios of 2.00 and 0.5, respectively, were found to have the highest and lowest dimensionless bearing capacities. As the load inclination increased from 0° to 30°, the bearing capacity decreased. The displacement pattern changed as the thickness ratio developed from 0.5 to 1.0 and 1.50 to 2.00, respectively, shifting towards the footing's centre and then back towards the application of the load. For an embedded depth ratio of 1, the bearing capacity decreased by 14–64% as the load inclination increased from 0° to 30°. Like this, the dimensionless bearing capacity decreases by 22–64% as the load inclination increases from 0° to 30° when the embedded depth ratio, u/D, is 2. The depth of influence of the displacement contours and failure pattern below the footing decreased, with the highest and lowest influence observed along the depth corresponding to 0° and 30°, respectively. The displacement contours and failure pattern shifted in the direction of load application. As the load inclination increased, the vertical settlement beneath the footing decreased, reaching its lowest level at 30°. The literature that is currently available is used to compare the validity of the results reported in this study.