PROBABILISTIC ASSESSMENT OF THE SEISMIC VULNERABILITY OF REINFORCED CONCRETE FRAME BUILDINGS IN CANADA

摘要

This paper describes results from a study on the seismic vulnerability of three reinforced concrete frame buildings designed for Vancouver, Canada. The buildings included a 4-storey, a 10-storey, and a 16-storey building, that can be considered typical of low, intermediate, and high rise buildings respectively. The buildings were designed in accordance with the National Building Code of Canada. The seismic excitations used in the analyses were represented by a set of 80 ground motion records. The response parameter considered in this study is the maximum interstorey drift obtained from nonlinear dynamic analysis of the frames. The intensity of the seismic excitations is represented by the spectral acceleration at the fundamental structural period of the frames. The assessment of the seismic vulnerability is based on the consideration of the mean annual frequencies of exceeding selected drift levels, i.e., the drift hazard curves. The computation of the drift hazard curves was conducted using probabilistic seismic demand analysis.