The Effect of Alternative Retrofit Strategies on Reduction of Expected Losses: Evaluation with Detailed and Simplified Approach

Limitation of monetary losses due to earthquakes can improve resilience in developed countries. Computation of losses with the PEER performance-based earthquake engineering framework (Porter 2003) normally entails performing a number of Non-linear Response History analyses as a basis for assessment of expected Engineering Demand Parameters and associated losses, that is an elaborate and time-consuming task. In (ATC 2012) an alternative quicker approach relying on simplified modeling and analysis with SPO2IDA is also envisaged. This paper tests the applicability of simplified method using pushover based analysis and CSM method. In particular, it compares the losses obtained for a non-conforming reinforced concrete moment frame building starting from the classical approach, i.e. based on Non-linear Response History analyses, with the one computed with pushover-based assessment. Moreover, it evaluates the reduction of losses after building retrofit with the pushover-based analysis.