Chapter
Aug 11, 2016
Site-Specific Relationship for Strain Dependent Shear Modulus and Damping Using In Situ VS and High Strain Cyclic Test Results
Publication: Geo-Chicago 2016
Abstract
This study suggests a practical method for estimating site-specific strain dependent shear modulus and damping. The method uses in-situ shear wave velocity measurements and commercial cyclic laboratory tests on higher strains (i.e., 0.5% to 1%) in which the effect of disturbance is less significant. Shear modulus calculated using in-situ shear wave velocity and at higher cyclic shear strain, is used for building a hyperbolic relationship for shear stress and strain. Modified Masing’s rule and the experimental hysteretic damping at that higher strain are used to create strain dependent damping relationship. As a result, the effects of sample disturbance on lab test results are reduced, and the number of laboratory tests decreases significantly.
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Copyright
© 2016 American Society of Civil Engineers.
History
Published online: Aug 11, 2016
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ASCE Technical Topics:
- Continuum mechanics
- Cyclic tests
- Damping
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Field tests
- Laboratory tests
- Material mechanics
- Material properties
- Materials engineering
- Mechanical properties
- Seismic waves
- Shear modulus
- Shear stress
- Shear tests
- Shear waves
- Solid mechanics
- Strain
- Stress (by type)
- Structural analysis
- Structural dynamics
- Structural engineering
- Tests (by type)
- Waves (mechanics)
Authors
Affiliations
Engineering Manager of R&D, Geocomp Corp., 125 Nagog Park, Acton, MA 01710; Ph.D. Candidate, Dept. of Engineering Sciences, Middle East Technical Univ., Ankara 06800, Turkey. E-mail: [email protected]
Mustafa Tolga Yilmaz
Assocciate Professor, Dept. of Engineering Sciences, Middle East Technical Univ., Ankara 06800, Turkey.
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