RESEARCH ON SEISMIC PERFORMANCE OF A SUPER-TALL MIXED-STRUCTURE BUILDING
To assess the seismic performance of a super-tall irregular steel-frame-core-tube hybrid structure,this study uses structural analysis software to perform elastic analysis under frequent seismic actions and dynamic elas-to-plastic time-history analysis under rare seismic actions.Localized analysis is also conducted on irregularities and critical components under seismic loads,along with proposed reinforcement measures.The results indicate that the overall energy dissipation mechanism of the structure during earthquakes is well-defined,the reinforcement mea-sures for irregularities are effective,and the design of critical components is reasonable.This study provides a basis for designing irregular super-tall engineering structures.
hybrid structuresteel frame-core tubeelastic analysisdynamic elastoplastic time history analysisir-regular out-of-bounds