Study on the seismic collapse resistance of RC frame structures with equal spans in zones with seismic intensity VII

The seismic design of Chinese building structures is mostly depended on the structural elemental loading capacity design under minor earthquake and the detailed design to ensure the deformation capacity.However,it is lack of quantitative analysis of seismic collapse resistance under severe earthquake.And the actual seismic damage shows that even for the same structural types,the global structural parameters will greatly influence the seismic collapse resistances.Therefore,this paper designs 24 RC frame structures in zones with seismic intensity Ⅶ according to the Chinese Seismic Design Code,which have different spans,storey heights and storey number.Incremental dynamic analysis is performed for the structures to assess their seismic collapse resistance.The result shows that global structural parameters,especially the span and the storey number,have a great influence on the seismic collapse resistance.