INCREASE OF THE TRANSPORT AND OPERATIONAL STATE OF ELEMENTS OF BRIDGE STRUCTURES

Abstract

The problem of improvement of transport and operational condition of bridge structures. It is noted that the indicator of the structural elements of bridges is the deterioration, reflecting the degree of decline in their functional qualities. It is found that increasing the operational reliability of the transport and operational condition of bridge constructions is advantageously carried out by applying the polymer composite materials. However, their use in construction is limited due to the complexity of predicting the stress - strain state over time in long-term and short-term loading. Examples of defects and damages of bearing structures of bridges identified in the field surveys. Describes methods of tests of endurance of concrete elements with a protective polymer coating. Presents the results of fatigue tests of concrete elements with protective coatings based on modified polymeric compositions intended for use in transport construction. The analysis of the experimental data of fatigue tests. Directions of practical implementation of research results.