Taghavipour, Saber
(2013)
Assessment Of Nonlinear Static (Pushover)
Procedures For Seismic Evaluation Of
Reinforced Concrete Structures.
Masters thesis, Universiti Sains Malaysia.
Abstract
In general, earthquake is one of the most serious natural disasters that
mankind has ever suffered since the first day of civilization. Hence, the seismic
performance of structures subjected to earthquake always becomes critical issues.
This thesis presents the assessment of current nonlinear static procedures using
nonlinear time history procedure. The selected pushover procedures in this research
are consisting of Coefficient Method, Capacity Spectrum Method and Modal
Pushover Method. Since plastic hinge length is an effective parameter in pushover
analysis, this study discusses different plastic hinge lengths. These lengths are
calculated for both default and user-defined cases. In this context, 2, 5, 8 and 12
storey frame were selected to represent the real low, medium and high rise regular
reinforcement concrete structure. The results of the pushover analysis indicated that
behaviour of the structures using modal pushover analysis method and coefficient
method (under certain conditions) were more realistically than those analysed using
capacity spectrum method. Moreover, the comparison of the results obtained from
selected plastic hinge length reveals that, although the results of user-defined and
default plastic hinge length in yielding state are almost similar, the results in ultimate
state are significantly different. Therefore, it can be concluded that in this study
proposed user-defined plastic hinge length shows better performance of hinge in
analysis as compared to default plastic hinge length.
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