Effect of Nonlinearity of Frame Buildings on Peak Horizontal Floor Acceleration |
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Authors: | Samit Ray-Chaudhuri Tara C Hutchinson |
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Institution: | 1. Department of Civil Engineering , Indian Institute of Technology , Kanpur, India samitrc@iitk.ac.in;3. Department of Structural Engineering , University of California at San Diego , La Jolla, California, USA |
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Abstract: | Using representative numerical models of eight code-designed steel moment-resisting frame buildings and several ground motions, time-history analyses are performed and a critical evaluation of Peak Horizontal Floor Acceleration (PHFA) demands is conducted. The frames are modeled alternatively as linear and nonlinear systems to isolate the effect of building nonlinearity on PHFA. In most cases, PHFA is reduced when nonlinear behavior of a building is considered; however, in some cases, significant amplification of PHFA is observed. Results from the numerical study provide insight into the trend of modal response modification factors presented taking ground motion spectral shape into account. |
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Keywords: | Seismic Response Nonstructural Components and Systems Peak Horizontal Floor Acceleration Nonlinear Behavior Time-history Analysis |
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