论文信息 - Application of the equivalent static force procedure for the seismic design of multistorey buildings with vertical mass irregularity

Application of the equivalent static force procedure for the seismic design of multistorey buildings with vertical mass irregularity

The seismic forces and deformations obtained from the equivalent static force procedure and the dynamic analysis method proposed for the 2005 National Building Code of Canada are compared for 4-, 8-, 12-, and 16-storey buildings with structural mass irregularity. Setbacks resulting in 200% and 300% mass discontinuities located at 25%, 50%, or 75% of the building height were considered. The buildings are located in Vancouver and Montreal, and lateral loads are resisted by concentrically braced steel frames. The storey shear forces, overturning moments, and storey drifts obtained from static analysis were found to exceed the values determined from dynamic analysis for all irregular structures except at the base of "podium-type" buildings located at the Vancouver site.Key words: mass, static, dynamic, seismic, shear, overturning moment, deflections, braced steel frames.

Robert Tremblay | Sina Merzouq | Carmen Izvernari | Krasimira Alexieva

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