Study On Capacity-spectrum Seismic Design Method Of Reinforced Concrete Frame-Shearwall Buildings

The philosophy and methodology of performance-based seismic design (PBSD) has been an extensive topic discussed by earthquake engineering experts at home and abroad.There is a general agreement among researchers and professionals that the displacement-based seismic design philosoph will be incorporate by future seismic codes.For this purpose, utilising the research results for performance-based seismic design at home and abroad , and the method of capacity-spectrum based of reinforced concrete frame-wall buildings is primarily put forward by taking into account the deficiency of methods suggested by current seismic design code. The main contents are as follows:In the beginning,some important factors influencing on the result of pushover analysis method,such as horizontal force distribution,target displacement,high-model problem,structure model,etc,are discussed.By three assumptions,MDOF are transformed into equivalent SDOF.And the seismic demand spectrum are discussed.Based on the study of the mechanical behaviors of frame-wall buildings subjected to the lateral forces,the simulate frame-bracing structures model are presented for practice structure.Applying Etabs analysis programs,a spatial structures model is built in program for analysis.Furthermore,the results of pushover analysis indicate that the simplified fame-bracing model is reasonable.Based on the seismic design comparing force-based to capacity spectrum-based, and correlational the seismic design codes,a case study applied capacity spectrum method for a fourteen-storey R.C.frame-wall buildings is included.And employing Etabs finite element analysis program,the analysis of the frame-wall buildings with regular type are carried out.