Seismic Capacity Assessment of Existing RC Buildings in The Sudan by Using Pushover Analysis

Abstract

Recently, the evaluation of seismic performance of existing buildings has received a great atten-tion. Current research works and observations indicate that The Sudan have low-to-moderate seismic regions. Most of existing buildings are designed only for gravity load. The objective of this paper is to assess the seismic performance of existing RC buildings in The Sudan. Four typical buildings were investigated using pushover analysis according to ATC-40. They were designed ac-cording to the Regulations for earthquake-resistant design of buildings in Egypt (ESEE) and Inter-national Building Code (IBC2012). Results showed that the buildings designed considering by ESEE and IBC2012 loads were found adequate and satisfied the Immediate Occupancy (IO) accep-tance criteria according to ATC-40. The comparison of the pushover curve shows that the stiffness of frames is larger when using ESEE Regulations compared to the IBC2012 design. This means that ESEE design procedure provides a greater capability to resist seismic load than the IBC2012 de-sign.