SEISMIC RESISTANCE ESTIMATION OF HIGH-RISING STRUCTURES UNDER DUCTILITY LEVEL EARTHQUAKE BY NONLINEAR STATIC METHOD

Abstract

The article discusses the multimodal nonlinear static method (MNSM) in assessing the seismic resistance of high-rise structures. The object of the study is a wind power plant 80 meters high. The article proposes a method for taking into account the higher forms of vibrations, as well as a modified algorithm for finding a characteristic point when assessing seismic resistance by a nonlinear static method. To verify the results obtained, the calculation for the seismic effect of the level "Maximum Design Earthquake" ("MCE") was performed using the direct dynamic method, taking into account the possibility of development of inelastic deformations and local brittle fractures in the load-bearing structural elements. A comparative analysis of the results was carried out, according to the results of which the error in the calculations does not exceed 12%.