NONLINEAR ANALYSIS OF MULTISTORY STRUCTURES USING NONLIN

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NONLINEAR ANALYSIS OF MULTISTORY STRUCTURES USING NONLIN

Author: Gordon Chan | Size: 1.8 MB | Format: PDF | Quality: Unspecified | Publisher: February 24, 2005 Blacksburg, Virginia | pages: 143

This thesis presents the results of a study of the effect of variations of systemic parameters on the structural response of multistory structures subjected to Incremental Dynamic Analysis. A five-story building was used in this study. Three models were used to represent buildings located in Berkeley, CA, New York, NY, and Charleston, SC. The systemic parameters studied are post- yield stiffness, degrading stiffness and degrading strength. A set of single-record IDA curves was obtained for each systemic parameter. Two ground motions were used in this study to generate the single-record IDA curves. These ground motions were scaled to the design spectral acceleration prior to the applications. The effect of vertical acceleration was examined in this analysis. “NONLIN”, a program capable of performing nonlinear dynamic analysis, was updated to perform most of the analysis in this study. The damage measure used in this study was the maximum interstory drift. Some trends were observed for the post-yield stiffness and the degrading strength. However, no trend was observed for the degrading stiffness.

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