Probabilistic Analysis of Dynamic Shakedown of Pavement due to Vehicular Loads and Earthquakes
Publication: Journal of Engineering Mechanics
Volume 149, Issue 12
Abstract
The uncertainties related to the inherent properties of pavement subgrade subjected to the dynamic effect of vehicular and earthquake loading were studied extensively using probabilistic analysis. The dynamic effect of the loading on pavement was modeled using lower bound shakedown analysis. Pavement subgrade was considered to be purely cohesive and was assumed to fail through the Mohr–Coulomb yield criterion. The soil spatial variability was simulated using random fields, which were represented in the form of finite-element random variables using the Karhunen–Loéve expansion method. The effect of parameter uncertainty was investigated using stochastic results such as the mean, coefficient of variation, and failure probability of the structure using the Monte Carlo simulation technique. The effect of dynamic loading of vehicles was studied by varying the period of vehicular movement. The dynamic shakedown was analyzed using two different methods. Seismic waves were generated using modified pseudodynamic approach. The combined effect of moving vehicles and earthquake was studied to determine the worst-case scenario. It was found that the generation of seismic waves affects the direction and frequency of the moving vehicle, which reduces the effect of shakedown on pavements due to vehicular load. The worst-case scenario was found to be the pavements with period ratio of 0.06 for a deterministic analysis, whereas it was 0.48 for a probabilistic analysis.
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Data Availability Statement
All data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work used the Supercomputing facility of IIT Kharagpur established under the National Supercomputing Mission (NSM), Government of India, and supported by the Centre for Development of Advanced Computing (CDAC), Pune.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 149 • Issue 12 • December 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Mar 22, 2023
Accepted: Aug 16, 2023
Published online: Oct 4, 2023
Published in print: Dec 1, 2023
Discussion open until: Mar 4, 2024
ASCE Technical Topics:
- Analysis (by type)
- Continuum mechanics
- Dynamic analysis
- Dynamic loads
- Dynamics (solid mechanics)
- Earthquakes
- Engineering fundamentals
- Engineering mechanics
- Geohazards
- Geotechnical engineering
- Highway transportation
- Infrastructure
- Mathematics
- Pavements
- Probability
- Seismic loads
- Solid mechanics
- Structural dynamics
- Transportation engineering
- Vehicle loads
- Vehicles
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