Eighth International Conference on Case Histories in Geotechnical Engineering
Numerical Investigation on the Displacements and Failure Mechanism of Soil-Nailed Structures in Seismic Conditions
Publication: Geo-Congress 2019: Earthquake Engineering and Soil Dynamics (GSP 308)
ABSTRACT
A three-dimensional (3D) finite element (FE) model has been established using the commercial program ABAQUS to simulate the performance of soil nailing systems in seismic conditions. Comparisons with experimental data have confirmed that the developed FE model can simulate the seismic behavior of a soil nail system properly. Based on this, the verified FE model has been used to study the effect of different nail orientations, slope angles, and backslope angles on the seismic deformations and failure mechanism of the soil nailing systems. It was found that with an increase in nail orientation, horizontal displacement of the soil nailed system decreased almost in all of the models. However, there was an optimum value for nail inclination after which horizontal displacements started to increase or stay constant with the increase in nail inclination. As backslope angle increased, the seismic resistance of soil nailing systems became more unstable. A comparison between the results for slope angles of 75° and 90° showed that a steep nailed slope had less seismic resistance. Besides, for a slope angle of 90° the failure mechanism was a combination of translational and rotational deformations while models with slope angle equal to 75° exhibited predominantly translational failures.
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REFERENCES
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Information & Authors
Information
Published In
Geo-Congress 2019: Earthquake Engineering and Soil Dynamics (GSP 308)
Pages: 160 - 168
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): 978-0-7844-8210-0
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Mar 21, 2019
ASCE Technical Topics:
- Analysis (by type)
- Continuum mechanics
- Displacement (mechanics)
- Earthquake engineering
- Engineering fundamentals
- Engineering mechanics
- Failure analysis
- Finite element method
- Geotechnical engineering
- Methodology (by type)
- Models (by type)
- Numerical analysis
- Numerical methods
- Numerical models
- Retaining structures
- Seismic effects
- Seismic tests
- Soil nailing
- Solid mechanics
- Structural mechanics
- Tests (by type)
Authors
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