DEVELOPMENT OF MEASURES FOR THE PROTECTION OF STRUCTURES OF RAILWAY TRANSPORT AGAINST ELECTROCORROSION UNDER ACTION OF ALTERNATING CURRENT LEAKAGE AND HIGH-VOLTAGE TENSION
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2018, Vol 182, Issue 16
Abstract
The destructive effects of the corrosive effects of stray and leakage currents are observed in almost all industries. The question is the most relevant for the railways. It is known that direct (DC) leakage currents and stray currents cause significant corrosion damage. It is supposed that corrosion from alternating current exposure is more moderate and does not cause significant damage. However, the analysis of literature data, data of theoretical, experimental and exploitative research indicates a significant destructive effect of alternating leakage current and high voltage on the structures of railway facilities in Ukraine. At the same time, measures to prevent electrocorrosion of reinforced concrete and other structures by alternating current are not provided for in the regulatory documents for railway structures. One of the reasons for this is the specificity of the processes of electro-corrosion of concrete, reinforced concrete and mortar in flooded structures. All existed methods of protection against electro-corrosion do not take into account the real mechanism of corrosion destruction of non-metallic parts of the structure. Based on this, it became necessary to develop schemes and constructive solutions for the protection of railway structures against electrocorrosion caused by alternating current, based on the fundamental principles of colloidal chemistry and physico-chemical mechanics. Developed measures and constructive solutions for the protection of concrete, reinforced concrete and stone engineering structures of railways from electrocorrosion caused by alternating high-voltage and leakage currents: solid steel screen with a deep grounding; mesh screens at the bottom of the supports with deep grounding; liquid glass screen with deep grounding. The effectiveness of the developed measures is caused by taking into account the actual mechanism of destruction of steel reinforcement and concrete structures.
Authors and Affiliations
Olga Borziak, Oleksii Dudin, Maksym Kutsenko, Victoria Poznyakova
Keywords
Related Articles
- EP ID EP536196
- DOI 10.18664/1994-7852.182.2018.159746
- Views 34
- Downloads 0
SIMULATION OF INTERACTION OF THE WAY AND MOBILE COMPOSITION UNDER A DISCRETE SUB-FRAMEWORK BASIS IN THE AREA OF RAIL JOBS
A mathematical model is developed for estimating the stress state of rails in the zone of rail joints. As a design scheme of the railway track, a beam is adopted in the work on discrete elastically dissipative supports w...
ANALYSIS OF ENERGY STORAGE IMPLEMENTATION ON THE METRO ROLLING STOCK
The application of various types of energy storages in the power supply system of metro is analyzed. The analysis of existing research determined that most prospects in the metro are electrochemical, inductive, capacitiv...
DETERMINATION OF THE STRUCTURE OF CONSTRUCTION WORKS ON THE RECONSTRUCTION OF SEPARATE STATIONS WHEN INTRODUCING A HIGH SPEED MOVEMENT
For a successful integration into the world community of transport Ukraine should be among the countries with the existing highways, which requires to continue relevant research, which started in the late 60-ies of the l...
SELECTION METHODS OF DIAGNOSTATION OF SUPPLY ELECTRICAL MACHINES DC ELECTRIC LOCOMOTIVE
The article deals with the actual problem of choosing the method of diagnosing auxiliary electric cars of electric locomotives. From the reliability of electric cars traction rolling stock depends not only on the reliabi...
SWITCH’S WEAR-RESISTANCE INVESTIGATION FOR OPERATING CONDITIONS OF KIEV UNDERGROUND RAILWAY
Maintenance of track and switches of differs significantly from main-line railway. This is caused by other operating conditions of rail track and switches. In underground railway used special project switches, also there...