Estimating Potential Economic Loss from Damage to RC Buildings in Singapore due to Far-Field Seismic Risk

Recent studies by researchers from Singapore have shown that ground motions produced by long-distance large earthquakes can be detected in Singapore, and the tremors may cause structural damage to residential buildings. However, seismic loading has not been included in building design codes in Singapore. This article presents a preliminary quantitative study on the potential economic loss due to far-field earthquake-induced damage on a typical residential building representing the first batches of modern residential building in Singapore constructed in the 1960s. The results indicate that the building without an infilled wall in the first story may sustain considerable damage and cause greater economic loss compared to the buildings with completely infilled walls. Meanwhile, retrofitting strategies are suggested and loss functions associated with various damage states are generated for assessing the social impact as well as facilitating post-disaster mitigation.

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