Publication: Design acceleration response spectra behavior of different structural system under seismic actions
Date
2013
Authors
Ebrahim Abdulmalek Abdulrahman Al-Qalisi
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Abstract
Many study focus on earthquake design response spectra and they mostly focus on the effect of the spectra parameters, however the study presented here focus on the effect of the structural system effect on the coded design acceleration response.
This study examines the seismic behavior four buildings constructed or being constructed in different parts of Malaysia, however the geological conditions and ground motion parameters are taken to be fixed to the four building as the main concern here is about the ductility and statical systems of the four buildings. The buildings were modeled and analyzed using Csc Orion software and their fundamental time was obtained through eigenvalue analysis. These results are further processed to obtain design accelerations. The study shows that the EC8 code is very conservative especially when being compared against UBC97 code. Besides, it raises the effect of having dual statical system and how such structure behave under dynamic actions. The study also discusses how the fundamental time of building; time of oscillation, is effected by the structural system and building ductility, and how this time plays an effect on the design acceleration. In the study, a good mathematical correlation and relationship of building height and design acceleration is inferred as well as a suggested formula is presented that relate the EC8 and UBC97 to each other.
The building studied were found to able to resist the seismic action as they have a good ductility and actions were not significant due to the Malaysian terrain is not highly earthquake hazardous.
Description
TA358.44.E27 2012
Keywords
Earthquake resistant design , Structural analysis (Engineering)