EVALUATION OF PERFORMANCE OF ASYMMETRICALLY DUAL SYSTEM STRUCTURES USING PUSHOVER AND TIME HISTORY ANALYSES
Abstract: Performance-based
design is becoming increasingly popular in designing a seismic resistant
building. In the study, a twelvestory, reinforced concrete office building with
asymmetric configuration using dual system located in seismic zone 6 was
designed conforming to the Indone sian S e i smi c Code SNI 03-1726-2002 and
the Indonesian Concrete Building Code SNI 03-2847-2002. The seismic performance
of the building was evaluated using the Static Nonlinear (Pushover) Analysis
and Inelastic Dynamic Time History Analysis. The performance point obtained
from the pushover analysis was defined using various methods, such as FEMA 356,
ATC-40, FEMA 440, and SNI 03-1726-2002. The result of the study indicated that
the highest performance point was that obtained according to FEMA 356 and FEMA
440, whereas the lowest value was that in accordance with SNI-03-1726-2002. The
roof displacement difference of that obtained from El-Centro dynamic analysis
and performance-point pushover analysis can reach up to 5 cm and 2.4 cm in X-
and Y-directions, respectively. This indicates that the pushover analysis is
quite accurate for evaluating the corresponding building since the first mode
shape is quite dominant.
Penulis: Kurdian Suprapto,
Sudarto
Journal Code: jptsipilgg110026