Chapter
Dec 8, 2023
Chapter 4
Seismic Analysis of Buildings
Publication: Designing to the Strongest Ground Motions
Abstract
Nonlinear-dynamic analysis requires the numerical solution of coupled nonlinear equations of motion (EOM). Nonlinear-dynamic analysis can be more “accurate” than nonlinear-static analysis, but it can also be easily corrupted by numerical errors. Nonlinear-dynamic analysis is used only to confirm that the responses are not underestimated. In this chapter, both methods of analysis are used to calculate the responses of 3-story steel SMF and 20-story steel EBF buildings to the TAPS ground motion. Ground motions impose both amplitude and cyclic demands on structures. From both static and dynamic analyses, the damage suffered by the building during the TAPS ground motion is negligible. Because the damping-adjustment is less than the seismic toughness, the building cannot collapse, but it can be damaged by the TAPS ground motion. The response of a 20-story steel EBF building to TAPS ground motion is determined by the intersection of demand and capacity curves.
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© 2023 American Society of Civil Engineers.
History
Published online: Dec 8, 2023
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ASCE Technical Topics:
- Analysis (by type)
- Continuum mechanics
- Dynamics (solid mechanics)
- Earthquake engineering
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Equations of motion
- Geotechnical engineering
- Geotechnical investigation
- Ground motion
- Materials engineering
- Metals (material)
- Nonlinear analysis
- Numerical analysis
- Seismic effects
- Seismic tests
- Solid mechanics
- Steel
- Steel structures
- Structural analysis
- Structural engineering
- Structures (by type)
- Tests (by type)
Authors
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Praveen K. Malhotra, Ph.D., P.E.
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