Facade systems modal analysis in consideration its own dynamic characteristics of the frame
Автор: Rybakov Vladimir Alexandrovich, Deriugin Konstantin Sergeevich, Pushkarskaya Marina Andreevna, Urmanceva Karolina Alexandrovna
Журнал: Строительство уникальных зданий и сооружений @unistroy
Статья в выпуске: 4 (89), 2020 года.
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This article studies the degree of the wind load dynamic component influence on the bearing capacity of the hinged ventilated facade systems (HFS) of a high-rise building. The research model is a reinforced concrete building with a HFS with variable number of storeys and with constant dimensions and identical floor plans over the entire height. As a design of the HFS, a scheme based on the T-profile with a step of brackets of 600 mm vertically and a pitch of guide racks of 500 mm horizontally is adopted. The number of storeys is taken as a variable parameter of the research model. The following tasks were solved in the work: determination of the natural frequencies of the HFS as a multi-span beam; determination of natural vibration frequencies of the facade systems together with a reinforced concrete building, determination of dynamic factors, and comparison of the obtained values. As a result of the work, it was shown that when determining the bearing capacity of the HFS of a high rise building, it is impossible to consider the facade system as a separate structure from the building. A methodology for modal analysis is proposed, which allows determining refined values of the natural frequencies of a substructure vibration and dynamic factor.
Hinged ventilated facade systems (hfs), wind load, dynamic component of wind load, load bearing capacity, high rise building, enclosing structures, dynamic factor, natural frequency of vibration, modal analysis
Короткий адрес: https://sciup.org/143172526
IDR: 143172526 | DOI: 10.18720/CUBS.89.6
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