Experimental and numerical studies of skirted hexagonal footings on three sands

• Published in: SN applied sciences Vol. 2; no. 3; p. 487
• Main Authors: Thakur, Adarsh, Dutta, Rakesh Kumar
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.03.2020; Springer Nature B.V
• Subjects: 3. Engineering (general); Applied and Technical Physics; Bearing capacity; Chemistry/Food Science; Density; Dimensional analysis; Earth Sciences; Engineering; Environment; Friction; Geometry; Laboratories; Load; Load tests; Materials Science; Numerical analysis; Sand; Short Communication; Specific gravity; Sands; Bearing capacity; Hexagonal footing; Singly skirted; Doubly skirted
• ISSN: 2523-3963; 2523-3971
• DOI: 10.1007/s42452-020-2239-9

The paper presents an experimental and numerical study to determine the ultimate bearing capacity of unskirted, singly and doubly skirted hexagonal footings on sands S1 (D 10   =  0.14), S2 ( D 10  =  0.45) and S3 ( D 10   = 1.45). Laboratory plate load tests were conducted in this connection on the unskirted, singly and doubly skirted hexagonal footings on three sands placed in a test tank at a relative density of 30%. The length of the skirt ranged from 0.0 B to 1.5 B . The results show that the bearing capacity for the skirted hexagonal footings on sand S3 was higher, followed by sands S2 and S1. However, the results revealed that the numerically obtained bearing capacity was comparable with the one obtained experimentally for the hexagonal footings on three sands. In addition, the experimental findings confirmed numerical results obtained with an average deviation of 1%. Double-skirt provision provides marginal improvement in the bearing capacity compared to singly skirted footings. The pattern of failure produced supports observations of the bearing capacity of the unskirted, singly and doubly skirted hexagonal footings on three sands.