Zhyvoderov M. Constructions with thermoplastic elements for leveling buildings and structures

The object of the research is matters conceming leveling of frame-free buildings in complicated mining and geologic conditions. The aim is the development of constructions with asphalt thermoplastic elements which allow to carry out leveling of frame-free buildings at the territories being undermined with step-like ground subsidences. Methods of the research are the tests of the asphalt thermoplastic elements and the statistical evaluation of the results. Constructions with concrete asphalt thermoplastic elements have been developed for leveling tall resiidential buildings up to nine stories in heeight. Engineering procedures were developed to calculate long-term strength of the constructions with asphalt concrete elements. These procedures are based on numerical integration of maximum loose-binder medium equilibrium eguations. A number of experimental studies of short-term and long-term strength of construction with asphalt thermoplastic elements has been carried out. Behaviour of the thermoplastic s ubsidence of constructions with asphalt concrete elementswhen being heated unilaterally with electric heaters has been investigated. Serviceability of the proposed constructions winh asphalt concrete elements was tested in the on-site experimental conditions.The novelty is as follows: effective solutions for the frame-free buildings with asphalt thermoplastic elements; experimental data of stress-strain characteristics of asphalt thermoplastic elements at pressures up to 1,2 MPa; experimentally approved theoretical approaches for the cslculation of the strength and strain capability of thermoplastic elements versus asphalt composition and geometrical sizes of the construction in condiitions of usual operation and in conditions of leveling inclinations. The results have been introduced in designing and building 23 sections of the residential houses in Donetsk and Gorlovka. Field of application is leveling of buildings in complicated engineering-geologic and mining-geologic civil engineering conditions.