Generalized pushover analysis for unsymmetrical plan buildings

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2012

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Kaatsız, Kaan

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Nonlinear response history analysis is regarded as the most accurate analysis procedure for estimating seismic response. Approximate analysis procedures are also available for the determination of seismic response and they are preferred over nonlinear response history analysis since much less computational effort is required and good response prediction is achieved by employing rather simple concepts. A generalized pushover analysis procedure is developed in this thesis study as an approximate analysis tool for estimating the inelastic seismic response of structures under earthquake ground excitations. The procedure consists of applying generalized force vectors to the structure in an incremental form until a prescribed target interstory drift demand is achieved. Corresponding generalized force vectors are derived according to this target drift parameter and include the contribution of all modes. Unlike many approximate analysis procedures, response of the structure is directly obtained from generalized pushover analysis results without employing a modal combination rule, eliminating the errors cultivating from these methods. Compared to nonlinear response history analysis, generalized pushover analysis is less demanding in computational effort and its implementation is simpler relative to other approximate analysis procedures. It is observed that the proposed analysis procedure yields results accurately in comparison to the other nonlinear pushover analysis methods. Accordingly it can be suggested as a convenient and sound analysis tool.

Subject Keywords

Structural analysis (Engineering)., Buildings, Structural engineering., Structural dynamics.

URI

http://etd.lib.metu.edu.tr/upload/12614482/index.pdf
https://hdl.handle.net/11511/21654

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

K. Kaatsız, “Generalized pushover analysis for unsymmetrical plan buildings,” M.S. - Master of Science, Middle East Technical University, 2012.