Assessment of seismic scenario-structure-based limit state criteria for 23-storey of rc high-rise building
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Date
2018-06
Authors
Puteri Nihal Che Kamahrudin
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Abstract
Issues regarding to RC high-rise building is different seismic scenario such as near and
far-field earthquake can result in difference levels and more complex of seismic
scenario structure related to global damage. The objectives of this study are to evaluate
the seismic scenario structure for 23-storey of RC high-rise building based on different
damage measure and to develop the fragility curve with different limit state criteria. In
this study, a 23-storey, 83.95m in height, RC structure is selected as a representative
sample building to evaluate the seismic scenario structure. Six ground motions are
selected representing two seismic scenarios. Seismic scenario-based building global
response at increasing earthquake intensities measure is adopted using Incremental
Dynamic Analysis. IDA curves and interstorey drift are the parametric study. The
structural performance and damage measure of RC high-rise building were evaluated
with the Performance Based Seismic Design (PBSD) limit state. ATC-43 (1998),
proposed four performance levels: operational performance (OP), immediate
occupancy (IO), life safety (LS), and collapse prevention (CP). Based on the IDA
curves, it shows that near field effect has high frequency that gives impact at early
intensities measure on building collapsed compared to far field effect. Meanwhile,
interstorey drift result indicates that the near field effect has large effect towards the
building damage compared to the far field effect. Regarding fragility curves, far field
earthquake has larger effect towards the structural damage compared to the near field.