Kirnos K. Stabilization and adjustment of foundations tilts of nuclear power plants reactor compartments

Object of study - the interaction of footings and large-foundations, processes of development of settlements and tilts during time under the action of eccentric loads, processes of stabilization and regulation of tilts. Purpose: To develop methods of stabilization and regulation of foundations tilts of nuclear power plants reactor compartments based on complex scientific and economically feasible approach to ensure the operational reliability of NPP. Methods: Long-term observations of settings and tilts of structures during the operation and at small values of speed deformations, measuring of stratum deformation of foundations, correlative and regressive analysis; method of final elements; analytical methods. Theoretical and practical results: developed and tested a method of numerical models of system "footing-foundation plate", which allows to take into account the different values of the physico-mechanical properties of the foundations derived from data engineering and geological prospectings, the loads on the footing of foundations, and to determine the subsident crater and the impact on the foundations of nearby buildings. Scientific novelty: experimentally established patterns of development settlements and tilts of PO NPP and their influence on the deformation (displacement) of the reactor facility (first obtained); developed elastic model that takes into account the joint work of settlements and foundations and adequately describes the process of development settlements and foundations precipitate PO (developed further); improved method for calculating the parameters of stabilization and regulation of foundations tilts in their small increments to ensure the operational reliability of reactor plants RO plant. The degree of implementation: in calculation and design of balance weight for stabilization and adjusting of regulation of foundations tilts reactor compartments № 1, № 3 Zaporizhzhya. Sphere of application: in the research of development foundations tilts PO NPP on stage of prolongation term of exploitation of power units for overdesigned period..