Chapter
Jun 20, 2012
Extended Veletsos-Younan Model for Geofoam Compressible Inclusions behind Rigid, Non-Yielding Earth-Retaining Structures
Publication: Geotechnical Earthquake Engineering and Soil Dynamics IV
Abstract
Geofoam is a type of cellular geosynthetic that can be used to reduce lateral earth pressures acting on rigid earth-retaining structures (RERSs) under a variety of soil and load conditions. One of the geosynthetically-functional ways in which geofoams do this is as a compressible inclusion to allow shear-strength mobilization of retained soil through controlled yielding which involves the well-known soil mechanics mechanism of arching. This paper describes how a mathematical model developed by Veletsos and Younan for a seismic-load application not involving geofoam was modified and extended to create a novel solution involving the use of geofoam as a compressible inclusion. An illustration of how this Extended Veletsos-Younan model can be applied in practice is also included using a case-history and full-scale, 1-g physical tests.
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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:
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Geomaterials
- Geomechanics
- Geosynthetics
- Geotechnical engineering
- Lateral pressure
- Mathematical models
- Models (by type)
- Pressure (type)
- Retaining structures
- Soil compression
- Soil dynamics
- Soil mechanics
- Soil pressure
- Solid mechanics
- Structural models
Authors
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Professor, Manhattan College, Civil and Environmental Engineering Department, Bronx, NY 10471. E-mail: [email protected]
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