Chapter
Jun 20, 2012
Dynamic Centrifuge Study of Seismically Induced Lateral Earth Pressures on Retaining Structures
Authors: Nicholas Sitar [email protected] and Linda Al Atik, Ph.D. [email protected]Author Affiliations
Publication: Geotechnical Earthquake Engineering and Soil Dynamics IV
Abstract
A set of two dynamic centrifuge experiments on stiff and flexible U-shaped retaining structures with dry medium dense sand backfill was performed in order to evaluate the validity of the various assumptions and analysis procedures currently used for the evaluation of seismically induced forces on retaining structures. The experimental results show that dynamic moments and dynamic earth pressures tend to be overestimated using the current analysis methods. More importantly, the dynamic earth pressure increases monotonically with depth and the maximum measured moments are not necessarily in with maximum measured earth pressure. These results are consistent with results obtained independently for gravity retaining structures and call into question the validity of the basic assumptions in the currently used analysis and design procedures.
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© 2008 American Society of Civil Engineers.
History
Published online: Jun 20, 2012
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ASCE Technical Topics:
- Centrifuges
- Construction equipment
- Continuum mechanics
- Dynamics (solid mechanics)
- Earthquake engineering
- Engineering fundamentals
- Engineering mechanics
- Equipment and machinery
- Geomechanics
- Geotechnical engineering
- Lateral pressure
- Pressure (type)
- Retaining structures
- Seismic effects
- Seismic tests
- Soil dynamics
- Soil mechanics
- Soil pressure
- Solid mechanics
- Structural dynamics
- Tests (by type)
Authors
Affiliations
Professor, Department of Civil & Environmental Engineering, University of California, Berkeley, 449 Davis Hall, Berkeley, CA 94720. E-mail: [email protected]
Student, Department of Civil & Environmental Engineering, University of California, Berkeley, 445 Davis Hall, Berkeley, CA 94720. E-mail: [email protected]
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