Kolesnichenko S. Technological safety of building steel structures

The object of research is building steel structures of industrial and civil construction entity, which are under long-term operation under of its project re-source or very close to its depletion; the main goal is the elaboration of theoretical approaches for steel structures’ technological safety indexes proving when its are under long-operation term for technical state determination and residual life determination with adopted risk of future operation assessment; methods – technical diagnostics, information and experimental modelling of technical state parameters, mathematical statistics, the reliability theory, the deformed solid body mechanics, the destruction mechanics, system analysis, the limit state analysis; results – a new procedure of technological safety calculation as general estimation of possibilities for future operation of steel structures is prepared; on the basis of standard reliability index the principles of technical state estimation is developed; in stochastic view, the mathematic models of steel structures’ residual life estimation with the history of long-term operation are improved; the main principles of operation and application for non-destructive heat control method are developed; the indexes of organizing-technical safety as a part of general technological safety are proposed; the mathematical model of quality and quantity risk evaluation in the frames of defined residual life with the non-determined imperfections is improved; the list of defects and imperfections for steel structures is developed; realization during technical agreement fulfillment and scientific reports preparation for companies: PJSC “Makiyivcoke”; PLC “Donetsksteel – metallurgical plant”; PJSC “DonbasEnergy – Sloviansk EPS”; PJSC “Avdiyivka coke chemical plant”; PJSC “CentrEnergo – Vuglegirska EPS”.