SPRING 2014
Numerical and Shake Table Analysis of Steel Structures
By
Anik
Alamgir, Ayesha Siddiqua, Md. Mehedi
Hasan & Mahfuza Tabassum
This thesis presents the results of a study on the structural response of
multistoried steel structures subjected to seismic ground motion. Nonlinear
Dynamic Analyses of three steel building models are used in this study. The
effect of deflection of structure is examined in this analysis. ‘ETABS 13’,
computer software capable of performing nonlinear dynamic analysis, is used to
perform most of the analysis in this study. The systemic parameters considered
are geometric nonlinearity of structure (P-Delta), proportional damping, scale
factor, number of out-put time steps, output time steps size.
Verification of ETABS 13
analysis with experiments is also an important part of this study. Laboratory
experiments provide results that are compared to the analyses results and hence
the efficiency of the software is evaluated. Three ground motions are used in
this study to generate the record of displacement vs. time curves (using scaled
El Centro ground motion data of various time durations). These ground motions
are scaled to laboratory data prior to their applications. The numerical results
matched reasonably well with the laboratory data.