STUDY OF NONLINEAR STATIC PUSHOVER ANALYSES DUE TO
LATERAL LOAD PATTERNS, Rosalia Widyaningsih, Student Number
061312590, 2012, Structure, International Civil Engineering, Department of Civil
Engineering, Atma Jaya Yogyakarta University.
Nonlinear Static Pushover Analysis is one of several methods for seismic
performance evaluation of structures. It can evaluate the strength of the structure
until its performance level. It can also provide reasonable estimates of the location
of the plastic hinge of the members. The performance point of structure in
Nonlinear Static Pushover Analysis depends on the lateral load pattern applied on
the structure. In this study, a 6 story regular building is subjected to two lateral
load patterns recommended by FEMA 273. The first lateral load pattern is
uniform distribution and the second is equivalent lateral force distribution. The
result of the analysis shows that both applied lateral load patterns give the
performance of building located between IO-LS level. For both applied lateral
load patterns show the similar plastic hinge order, starts from beam end and
continues to beam end of the higher story. For both lateral load patterns, the
plastic hinge limited to D-E level. In general, the two lateral load patterns give the
close result. The structure is safe for both applied lateral load patterns. The target
displacement or maximum displacement of the building is 0.08 m. The maximum
base shear of the building due to EX is 6432.0498 kN at 0.0629 m. The maximum
base shear of the building due to EY is 8252.8213 kN at 0.1874 m.
Keywords: Nonlinear Static Pushover Analysis, uniform distribution, equivalent
lateral force distribution, performance point, target displacement