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.

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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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