Seismic performance analysis methods for frame-core structures in elastic and elastic-plastic phases

Abstract

Frame-core structure is a main structural design form of modern high-rise buildings, and its seismic performance is the key point in the design of structural safety performance of buildings. This paper analyzes and summarizes the application of the vibration decomposition reaction spectrum (VDRS) method and the elastic-plastic time course analysis method in the seismic performance analysis of frame-core structures by compiling and summarizing a large amount of literature, empirical evidence and research. The results show that the general method used in the elastic phase is the VDRS method, but in the calculation, the plastic state of the structure is not considered, and the application needs to be supplemented by the elastic-time analysis method. For the elastic-plastic phase, it can be divided into the static elastic-plastic analysis (SEPA) method and the dynamic elastic-plastic analysis (DEPA) method. The SEPA method is a method often applied by the majority of engineering designers nowadays because it is simpler in practice and the analysis results are more accurate; while the DEPA method is now widely used as a more novel analysis method in more complex structures and analysis of rare earthquakes.