Berezovskiy N. The Particularities of the influence lumpy soil bases on springy-deformed condition of airfield coverings.

The thesis is dedicated to improvement of the methods of the determination springy-deformed conditions of hard aerodrome covering, which are located on lumpy soil base. According to method of determination has bin developed for main accounting features. Factor soil basis, under different events lie soil natural base. The main factors has been determined, which influence upon process of the change springy-deformed conditions airfield coverings presence in soil thick mass. Given estimation of the shaping quarter covering soil bases on of the weak cut- in soil territory of Ukraine. Correspondence of results to accounting of determination of soil basis reaction factor Kshas been determined for geological conditions of "Kishineu" airport, got on results of natural tests to deformation of slabs of runway airfield covering, results of modeling of the deformation processes with using of program complex "Mirage" and accounting according to CNiP. The system of the measures taking into account of spottiness soilbases at designing of airfield covering. It is advanced existing method of the recommendation to the influence of spottiness soil basis on springy-deformed conditions of covering at reconstruction an extention of Borispyl Airport. The main results of the work sent for practical introduction to NDI of the civil aviation "Ukraeroproekt". Keywords: springy- deformed condition, soil thickness, accounting parameters, factor of soil basis reaction, airfield covering.