2010•World Earthquake EngineeringRequires access

Research on lateral load distribution method for RC frame structures with steel adding storey in pushover analysis

Zong Zhong-ling

Abstract

Considering the inter-story stiffness changes caused by the earthquake load,a calculated method of the lateral load distribution for RC frame structures with steel adding storey is presented.Through pushover analysis and nonlinear time-history(NTH) analysis,the method is validated by comparing response quantities such as story displacement,inter-story drift ratio,and distribution of plastic hinges.It is shown that the distribution of plastic hinges obtained from pushover analysis is accorded with that of NTH analysis under practical earthquake load;story displacement and inter-story drift ratio are also in accord with the result of NTH analysis.

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Key concepts: Structural engineering, Hinge, Plastic hinge, Displacement (psychology), Stiffness, Structural load, Frame (networking), Nonlinear system