Chapter
Jun 20, 2012
Numerical and Physical Modeling of Liquefaction Mechanisms in Layered Sands
Authors: Pelin Tohumcu Özener [email protected], Kutay Özaydin [email protected], and Mehmet Berilgen [email protected]Author Affiliations
Publication: Geotechnical Earthquake Engineering and Soil Dynamics IV
Abstract
This paper presents the results of shaking table model tests and numerical modelling studies which were carried out to gain insight to liquefaction mechanisms in layered sand deposits. The experiments were performed by means of a shaking table testing system on uniform sand columns, silt interlayered sand columns and two layered sand columns deposited at various relative densities and subjected to different input excitations. Excess pore water pressures generated during dynamic loading were measured by pore water pressure transducers installed at three different depths. The physical model tests are also numerically modelled to analyse the dynamic behavior of uniform and layered sand columns by using the Towhata-Iai liquefaction model. The experimental and numerical analysis results revealed that the presence of a less permeable silt interlayer within the sand deposit and existence of a loose sand layer underlying dense sand deposits can have significant effect on the liquefaction behavior.
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© 2008 American Society of Civil Engineers.
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Published online: Jun 20, 2012
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ASCE Technical Topics:
- Analysis (by type)
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Geomechanics
- Geotechnical engineering
- Layered soils
- Models (by type)
- Numerical analysis
- Numerical models
- Physical models
- Pressure (type)
- Soil analysis
- Soil liquefaction
- Soil mechanics
- Soil properties
- Soils (by type)
- Solid mechanics
- Water pressure
Authors
Affiliations
Assistant Professor, Yildiz Technical University, Geotechnical Engineering Department, 34349, Beşiktaş, İstanbul, Turkey. E-mail: [email protected]
Professor, Yildiz Technical University, Geotechnical Engineering Department, 34349, Beşiktaş, İstanbul, Turkey. E-mail: [email protected]
Associate Professor, Yildiz Technical University, Geotechnical Engineering Department, 34349, Beşiktaş, İstanbul, Turkey. E-mail: [email protected]
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