Pressure Settlement Behaviour and Bearing Capacity of Asymmetric Embedded Plus Shaped Footing on Layered Sand

• Published in: Civil and environmental engineering reports Vol. 31; no. 3; pp. 152 - 176
• Main Authors: Rawat, Priyanka, Dutta, Rakesh Kumar
• Format: Journal Article
• Language: English
• Published: Sciendo 01.09.2021
• Subjects: asymmetric plus shaped footing; embedment depth; friction angle; layered sand; symmetric plus shaped footing; thickness of upper layer; ultimate bearing capacity
• ISSN: 2080-5187; 2450-8594
• DOI: 10.2478/ceer-2021-0039

The aim of the present numerical study was to analyse the pressure settlement behaviour and bearing capacity of asymmetric plus shaped footing resting on loose sand overlying dense sand at varying embedment depth. The numerical investigation was carried out using ABAQUS software. The effect of depth of embedment, friction angle of upper loose and lower dense sand layer and thickness of upper loose sand on the bearing capacity of the asymmetric plus shaped footing was studied in this investigation. Further, the comparison of the results of the bearing capacity was made between the asymmetric and symmetric plus shaped footing. The results reveal that with increase in depth of embedment, the dimensionless bearing capacity of the footings increased. The highest increase in the dimensionless bearing capacity was observed at embedment ratio of 1.5. The increase in the bearing capacity was 12.62 and 11.40 times with respect to the surface footings F1 and F2 corresponding to a thickness ratio of 1.5. The lowest increase in the dimensionless bearing capacity was observed at embedment ratio of 0.1 and the corresponding increase in the bearing capacity was 1.05 and 1.02 times with respect to the surface footing for footings F1 and F2 at a thickness ratio of 1.5.