Features of the progressive collapse calculation for the frame of unique building of a multifunctional complex.

Abstract

Features of the progressive collapse calculation for the frame of unique building of a multifunctional complex.

Kravchenko G.M., Trufanova E.V., Kushchenko A.K., Bychenko I.V.

Incoming article date: 09.08.2022

The calculation for progressive collapse with variation and comparison of different scenarios was carried out for the frame of a unique high-rise building of a multifunctional complex. At the first stage, the calculation was performed in a quasi-static formulation, the maximum deflections for two destruction scenarios were determined. The requirements for the state of limited operability in conditions of progressive collapse are completed. At the second stage, the calculation was made in a dynamic formulation. A modal analysis of the frame was previously performed in order to determine the forms of vibrations that will correspond to the expected deformations of the structure in the event of the occurrence and development of the process of progressive collapse. It is established that the maximum deflection of the plate when calculated in a dynamic formulation is 27.6% greater than in a quasi-static one. The residual deflection after the attenuation of the oscillatory process is 4.6% less than in the static calculation. Therefore, the object of study is safe from the point of view of the possibility of an emergency situation, accompanied by partial destruction of load-bearing structures.

Keywords: parametric architecture, evolution of shaping, aerodynamics, finite element method, analytical surfaces