Influence of Strain Localization on Reliability Based Design of Bridge Abutments Using Pseudo-Dynamic Method
Publication: Geo-Frontiers 2011: Advances in Geotechnical Engineering
Abstract
The paper focuses on reliability based design of bridge abutments when subjected to earthquake loading. Planar failure surface has been used in conjunction with pseudo-dynamic approach to compute the seismic active earth pressures on the bridge abutment. The proposed pseudo dynamic method, considers the effects of strain localization in the backfill soil and associated post-peak reduction in the shear resistance from peak to residual values along a previously formed failure plane, phase difference in shear waves and soil amplification along with the horizontal seismic accelerations. Four modes of stability viz. sliding, overturning, eccentricity and bearing capacity of the foundation soil are considered for the reliability analysis. The influence of various design parameters on the seismic reliability indices against four modes of failure is presented, following the suggestions of Japan Road Association, Caltrans Bridge Design Specifications and U.S Department of the Army.
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Copyright
© 2011 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Analysis (by type)
- Bridge abutments
- Bridge components
- Bridge design
- Bridge engineering
- Continuum mechanics
- Design (by type)
- Dynamics (solid mechanics)
- Earthquake engineering
- Engineering fundamentals
- Engineering mechanics
- Failure analysis
- Fluid mechanics
- Geotechnical engineering
- Hydrologic engineering
- Material mechanics
- Materials engineering
- Pseudodynamic methods
- Seismic design
- Seismic tests
- Shear resistance
- Solid mechanics
- Strain
- Structural dynamics
- Structural engineering
- Structural response
- Tests (by type)
- Viscosity
- Water and water resources
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