Geotechnical Earthquake Engineering and Soil Dynamics V
A Hybrid Simplified Method to Predict Liquefaction in Urayasu City during the Great East 2011 Earthquake
Publication: Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
ABSTRACT
This paper presents a semi-coupled method to predict the occurrence of liquefaction in the city of Urayasu caused by the 2011 Tohoku-Pacific Ocean earthquake (Mw=9.0). The presented method is a combination of a linear equivalent computation and a formulation for computing plastic volumetric strain based on the works of Byrne (1991) and Wu (1996). Further, this approach was conducted to simulate the seismically induced soil liquefaction and volumetric settlements before triggering of two representative soil models: one representing a non-liquefied ground model chosen from the old town of Urayasu and another a liquefaction-prone ground at the reclaimed area of the city. Fully undrained behavior was assumed during calculation, so the effect of seepage are not taken into account and then results are restricted to the shaking duration before triggering liquefaction. The computed zones of liquefaction or non-liquefaction were compared and in a good agreement with observations. Predicted values of settlements are in a good agreement with in-situ measured values at non-liquefied locations.
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REFERENCES
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Information & Authors
Information
Published In
Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
Pages: 41 - 50
Editors: Scott J. Brandenberg, Ph.D., University of California, Los Angeles, and Majid T. Manzari, Ph.D., George Washington University
ISBN (Online): 978-0-7844-8145-5
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Jun 7, 2018
ASCE Technical Topics:
- Computing in civil engineering
- Earthquakes
- Ecosystems
- Engineering fundamentals
- Environmental engineering
- Geohazards
- Geomechanics
- Geotechnical engineering
- Hybrid methods
- Infrastructure
- Land reclamation
- Methodology (by type)
- Models (by type)
- Simulation models
- Soil dynamics
- Soil liquefaction
- Soil mechanics
- Soil properties
- Soil settlement
- Urban and regional development
- Urban areas
Authors
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