УЛУЧШЕНИЕ ДЕМПФИРУЮЩИХ ХАРАКТЕРИСТИК СТАЛЬНЫХ ПОДКРАНОВЫХ КОНСТРУКЦИЙ ПОСРЕДСТВОМ ИНТЕГРАЦИИ БЕТОННОГО СЕРДЕЧНИКА
УЛУЧШЕНИЕ ДЕМПФИРУЮЩИХ ХАРАКТЕРИСТИК СТАЛЬНЫХ ПОДКРАНОВЫХ КОНСТРУКЦИЙ ПОСРЕДСТВОМ ИНТЕГРАЦИИ БЕТОННОГО СЕРДЕЧНИКА
DOI:
https://doi.org/10.22337/2587-9618-2024-20-4-57-71Ключевые слова:
подкрановые конструкции, трубобетон, критическая нагрузка, частота собственных колебаний, декремент затухания, коэффициент неупругого сопротивления, демпфированиеАннотация
Изучается перспектива применения трубобетонных колонн в подкрановых конструкциях с целью увеличения демпфирования во время движения подъемно-транспортных машин, подверженных динамическим воздействиям в процессе эксплуатации. Представлены результаты экспериментальных испытаний трубобетонных образцов на устойчивость под действием центрального сжатия статической нагрузки. Описана методика динамических испытаний образцов, на основе которой определены коэффициенты демпфирования колебаний и неупругого сопротивления. Полученные результаты показывают, что трубобетонные образцы обладают более высокими демпфирующими свойствами, чем стальные и железобетонные, что свидетельствует об их эффективности в качестве несущих конструкций, предназначенных для мостовых кранов.
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