Research on Performance-based Design Method of China Code for Seismic Design of Buildings

In order to study performance-based seismic design method for the newly enacted China Code for Seismic Design of Buildings(GB 50011—2010),a frame-core tube structure building was taken as an example.The bearing capacities of frame beams,shear walls and coupled beams as well as the storey displacement were calculated by finite element software GSSAP based on Guangsha building structure CAD,which was commonly used in the practical engineering.The results indicate that if the bearing capacity requirements of performance levels are satisfied under seismic fortification intensity or rarely occurred earthquake actions,the amount of reinforcement in the shear walls and coupled beams will have a dramatic increase,serious overreinforced phenomenon will be appeared,and it is difficult for the construction in the practical engineering.The overreinforced phenomenon of frame beam isn't occured.If the storey drift requirements are satisfied under seismic fortification intensity or rarely occurred earthquake actions,the shear wall,coupled beam as well as the cross-sectional dimensions of frame beam,frame column shall to have a significant modification.Indeed,this adjustment can't meet the requirements of economic rationality.