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Structural Engineering and Mechanics Volume 40, Number 6, December25 2011, pages 763-782 DOI: http://dx.doi.org/10.12989/sem.2011.40.6.763 |
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Performance-based framework for soil-structure systems using simplified rocking foundation models |
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J. Paul Smith-Pardo
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| Abstract | ||
| Results from nonlinear time-history analyses of wall-frame structural models indicate that the condition of vulnerable foundations -for which uplifting and reaching the bearing capacity of the supporting soil can occur before yielding at the base of the shear walls- may not be necessarily detrimental to the drift response of buildings under strong ground motions. Analyses also show that a soilfoundation system can inherently have deformation capacity well in excess of the demand and thus act as a source of energy dissipation that protects the structural integrity of the shear walls. | ||
| Key Words | ||
| soil-structure interaction; vulnerable foundations; performance-base framework; nonlinear analysis; seismic strengthening | ||
| Address | ||
| J. Paul Smith-Pardo: Department of Civil and Environmental Engineering, Seattle University, Seattle, WA, USA | ||