Eighth International Conference on Case Histories in Geotechnical Engineering
Bearing Capacity of a Strip Footing Situated on Reinforced Cohesionless Soil Slope Using Non-Associated Flow Rule
Publication: Geo-Congress 2019: Geotechnical Materials, Modeling, and Testing (GSP 310)
ABSTRACT
The influence of soil dilatancy on the bearing capacity of a surface strip footing, situated on the edge of the reinforced cohesionless soil slope, is investigated by incorporating a non-associated flow rule in lower bound finite elements limit analysis. A single layer of reinforcement is laid at various depths below the base of the footing. The improvement in the bearing capacity of the strip footing is expressed by an efficiency factor which is the ratio between the obtained values of bearing capacity factor associated with the unit weight of soil for reinforced and unreinforced slopes. The variation between the efficiency factor and depth of placement of the reinforcement layer are presented as a series of design charts for various combinations of slope angle, soil friction angle, and dilative coefficient. By keeping other parameters as constant, the efficacy of reinforcement layer increases up to a certain depth of placement of the reinforcement layer, after that it reduces. The design charts indicate that the reinforcing efficiency enhances with an increase in the value of dilative coefficient. It is found that as the value of slope inclination and friction angle of the slope fill increases, the efficiency factor also enhances. Failure patterns are also provided for few representative cases.
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ACKNOWLEDGEMENT
The authors gratefully acknowledge the Department of Science and Technology, Government of India for their financial support vide Science and Engineering Research Board (SERB) research project grant number DST No: SB/FTP/ETA-0061/2014 dated 17/07/2014.
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Information & Authors
Information
Published In
Geo-Congress 2019: Geotechnical Materials, Modeling, and Testing (GSP 310)
Pages: 135 - 144
Editors: Christopher L. Meehan, Ph.D., University of Delaware, Sanjeev Kumar, Ph.D., Southern Illinois University Carbondale, Miguel A. Pando, Ph.D., University of North Carolina Charlotte, and Joseph T. Coe, Ph.D., Temple University
ISBN (Online): 978-0-7844-8212-4
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Mar 21, 2019
Published in print: Mar 21, 2019
ASCE Technical Topics:
- Cohesionless soils
- Engineering fundamentals
- Finite element method
- Footings
- Foundation design
- Foundations
- Geomechanics
- Geotechnical engineering
- Load bearing capacity
- Methodology (by type)
- Numerical methods
- Shallow foundations
- Slope stability
- Slopes
- Soil analysis
- Soil dilatancy
- Soil dynamics
- Soil mechanics
- Soil properties
- Soil stabilization
- Soils (by type)
Authors
Metrics & Citations
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