Seismic vulnerability assessment of an industrial building in Peninsular Malaysia

This paper presents the analytical seismic vulnerability assessment of an industrial building in Peninsular Malaysia. The development of analytical vulnerability curves is carried out using the correlation of the building responds to structural damage as damage index (DI). Global period change and maximum interstorey drift are used as damage indices (DI) to indicate the changes in building stiffness and information about local and storey damages. The former uses the dynamic parameter of the structure that is related to the increase in the natural period of the structure with increased displacement demand. The latter uses the maximum interstorey drift, θmax (%), to identify the limit states thresholds defined by FEMA 356. DI is then correlated to mean damage ratio (MDR) to represent the vulnerability curve of a group of buildings. The vulnerability of the industrial building as a primary system is also defined using fragility curves to represent the probabilistic estimation of its performance in terms of three different limit states according to FEMA 356.The maximum capacity of the Sinagama industrial building of the case study is evaluated at PGA = 0.75g and corresponds to an interstorey drift ratio greater than 5%. The seismic fragility curve for the collapse prevention limit state shows that the mean acceleration capacity of the Sinagama building is 0.68 g.