The paper studies the existing and formulates the new scientifically grounded ways and systems of protection of workers from the impact of harmful and dangerous factors during the monitoring, maintenance and repair work on the current content of bridge crossing structures under wind pulsation effects on them. The influence of aerodynamic effects on the workers participating in the implementation of technological processes on the transport infrastructure objects is inseparably connected with the stability estimation of building structures in the wind flow and the change in the frequency portrait of natural and forced vibrations of separate elements. Both experimental, numerical and analytical approaches to the dynamic behavior of air masses near the structure and their impact on the worker, scaffolding, moving materials, etc. are considered in the article. In the investigation, the mathematical model of the wind flows behavior near the elements of the transport facility is offered, the possibilities of the full-scale experiment with the physical model of the bridge crossing are described, as well as the numerical modeling of the bridge structure behavior under the wind influences. At the same time, the dangerous zones of employees’ location, where the air flows speeds exceed the allowable normative values and limit the possibilities of repair or diagnostic works performance are revealed and detected.
Determination of Hazardous Areas at Bridge Crossings Under Wind Impacts
Lect. Notes in Networks, Syst.
International Scientific Siberian Transport Forum ; 2021 May 11, 2021 - May 14, 2021
International Scientific Siberian Transport Forum TransSiberia - 2021 ; Kapitel : 112 ; 1026-1034
2022-03-19
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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