2014

Постійне посилання на фонд

https://eir.nuos.edu.ua/handle/123456789/3337

Переглянути

Перегляд 2014 за Автор "Ermakov, D. V."

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  • Ескіз
    Документ
    Innovative technologies in composite floating docks construction
    (2014) Rashkovskyi, A. S.; Рашковский, А. С.; Ermakov, D. V.; Ермаков, Д. В.; Dong, Zhao; Дун, Чжао
    The aim of the article is the familiarization with the developed innovative technologies in the construction of reinforced-concrete floating structures on the example of composite floating docks (reinforced-concrete pontoon, steel towers). The advantages of composite floating structures compared with all-metal ones and the results of reinforced-concrete ele-ments optimization which provided the minimum usage of steel have been given. The new materials for floating reinforced-concrete structures are developed. This structures are based on the modified concrete which provides their long time performance and exploitation dura-tion in the sea water. Such structures can perform up to 70–80 years that is more than steel ones in 1.5–2 times. The construction technology of composite floating docks which have almost unlimited lifting force and sizes from separated large parts with further caissonless jointing of reinforced-concrete pontoon on length and width afloat without submerged-technical works is developed. This technology can be used both at the building yard and at the place of its exploitation and the technology does not have any analogues in the worldwide practice of dock construction. The research results can be used for design and construction of any floating structures exploited in the sea water.
  • Ескіз
    Документ
    Simulation of fire development and distribution in floating dock towers
    (2014) Rashkovskiy, A. S.; Рашковский, А. С.; Rashkovskiy, S. A.; Рашковский, С. А.; Postupalskiy, N. I.; Поступальский, Н. И.; Ermakov, D. V.; Ермаков, Д. В.
    One of the most difficult problems which appear during the floating docks design is the fire hazard estimation. For each designed floating dock it is necessary to analyze the possible scenarios of fire development, the ways of its distribution and work out structural, technical and organizational events for the prevention, localization and suppression of pos-sible fires. The support in such analysis may provide computer simulation of fire development scenarios: it is possible to trace the ways of fire distribution into the dock tower taking into account the work of fire suppressing resources setting in different places the preliminary fo-cuses of ignition fires. The mathematic model of fire development and distribution in the floating dock tower has been developed and researched taking into account the potential fire wire which connected the rooms. This model allows counting the possible scenarios and limited modes of fire develop-ment and evaluating the fire hazards of structures with different complexity. The parametrical research of fire development in the room system has been carried out. It is demonstrated that there are a conditions in which the fire distribution can be stopped and the criteria of fire cease are determined.