STUDY OF THE INFLUENCE OF THE LAYING OF HEATING MAINS ON THE STATE OF THE BASE PAVEMENT AUTOMOBILE ROAD

Abstract

This article includes the way to prevent deformation of linear constructions which can due to the laying of the heating network because heating promotes ice formation. The considered design of the pavement cover during the laying of the heating network is being built on a section of the road on Pionerskaya street, which belongs to the roads of the third category. There are results of scientific research and engineering calculations of options for rational design of roads when laying the heating network and the example of the Far Eastern section of the road. The development is a generalization of the results of solving engineering, scientific, and settlement applied objectives. There is heating network is being laid, in the area under considerationwhich will subsequently warm up the outer surface of the asphalt concrete due to the heat generation of the pipes. It will cause the formation of ice on the outer surface of the asphalt concrete during period with negative temperatures. This construction imitaties plate in the rubble layers by using an integrated biaxial geogrid, as well as the laying of the heat insulation layer. The analysis of the initial data, as well as during the realization of the work, has established that, in order to be able to evaluate and compare the various indicators, it is necessary to provide calculated and theoretical studies for several construction options. Analysis of possible methods and means for determining rational structure parameters showed that it would be advisable to use geotechnical software systems «FEM models» and «Termoground». These software systems are able to jointly simulate the work of structures by its stress state, as well as by the ongoing thermodynamic processes in the annual freeze-thaw cycle. Numerical simulation of the structure operation using this software geotechnical complex allowed us to estimate the stability of the structure deformations, as well as to limit the heating of the asphalt concrete surface.