МАТЕМАТИЧНЕ МОДЕЛЮВАННЯ ВНУТРІШНЬОСТРУКТУРНИХ ТЕРМОНАПРУЖЕНЬ, ЩО ВИКЛИКАЮТЬСЯ ПОЛЯМИ ЗМІННОЇ ТЕМПЕРАТУРИ В КОМПОЗИТАХ ЗІ СТРИЖНЕВОЮ АРМАТУРОЮ

Abstract

Introduction. Thermomechanical effects arising in heterogeneous composite materials under the influence of temperature significantly affect the strength and durability of structures made of them. These effects have a special influence on the thermal deformation of bridge and road structures under conditions of seasonal and daily changes in ambient temperature. They are caused by non-uniformity of the thermomechanical parameters of its fractions and fittings. Until now, the phenomenon of thermomechanical deformation of reinforced structures has not been sufficiently studied, therefore the tasks of their research are urgent. Problem Statement. The problem of the performed research is to establish the laws of thermomechanical deformation of composite materials (including cement concrete and asphalt concrete), which are reinforced with reinforcing rods, in the fields of variable temperatures. Purpose. The purpose of the work is to derive mathematical ratios that determine intrastructural thermal stresses in composites caused by variable temperature fields and heterogeneity of materials.