- BUILDING STRUCTURES, BUILDINGS AND FACILITIES
- Nonlinear Methods Of Calculations During Scientific And Technical Support
- UDC 624.04.7

doi: 10.33622/0869-7019.2022.10.32-36

**Vladimir B. DOROZHINSKIY**, dorozhinski@mail.ru

Moscow State University of Civil Engineering (National Research University), Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation

**Abstract**. An example of calculating a building of an increased level of responsibility by a nonlinear direct dynamic method when conducting scientific and technical support at a site with an intensity of seismic impact of eight points is considered. Calculations were performed taking into account geometric and physical nonlinearities. The isofields of stress intensity and plastic deformations in structural elements, graphs of changes in values over time are given. When analyzing the calculation results, the redistribution of forces, stresses during inelastic work of the material and the failure of individual elements in time, the possibility of collapse of the entire building with such damage were estimated. Based on the results of the research, recommendations on the adjustment of structural solutions (the use of beam ceilings; alignment of horizontal and vertical structures for the perception and transmission of horizontal forces; the position of vertical structures and stiffening cores, etc.) were given. It is concluded that the study of the work of structures by the nonlinear dynamic method will increase the reliability and seismic resistance of the objects under consideration.

**Keywords**: nonlinear dynamic calculation methods, consideration of geometric and physical nonlinearities, isofields of stress intensity and plastic deformations, correction of structural solutions, seismic impact - REFERENCES

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