Published since 1923
DOI: 10.33622/0869-7019
Russian Science Citation Index (RSCI) Web of Science
  • Arched Vaults Made of Corrugated Sheets: Natural Vibration Frequencies
  • UDC 624.046:624.072.32 DOI: 10.33622/0869-7019.2019.12.18-24
    Larisa V. KRASOTINA, Candidate of Technical Sciences, Docent, e-mail:
    Siberian State Automobile and Highway University, Prospekt Mira, 5, Omsk 644080, Russian Federation
    Jrgen ROBRA, Doctor of Technical Sciences, Professor, e-mail:
    Bochum University of Applied Sciences, Lennershofstrasse, 140, Bochum 44801, Nordrhein-Westfalen, Germany
    Abstract. According to the recent Russian norms, when designing building structures, it is necessary to conduct a dynamic analysis of wind loads, which previously was required not in all cases. In arched vaults of profiled arched self-supporting flooring, it was not always necessary to determine the frequencies and forms of natural vibrations. These parameters can be established using the finite element method. Taking into consideration the complex and lengthy modeling process of arched vaults, in particular the contact areas in regular transverse joints, a large number of finite elements in the models and, as a consequence, considerable time for their calculation, it was necessary to identify a sufficient level of detailing of a finite element model for correct calculations of frequencies and forms of vibrations considered in the operation of structures. The influence of the detailing of the finite element model of arched vaults made of profiled flooring on the determination of their natural frequency is revealed. To substantiate the parameters of the finite element model, it was studied how the results of the calculation was influenced by edge effects, the presence of friction in the joints of corrugations of the profiled flooring, the influence of rubber gaskets in the joints on the work of the arched vault. Much attention is paid to the features of the design scheme associated with the choice of the number of sheets of profiled flooring, taking into account the contact nodes, friction forces, etc. It is established that the first vibration frequency is little dependent on the number of sheets of corrugated flooring and the presence of rubber gaskets in the joints. For subsequent frequencies, the difference can be significant.
    Key words: finite element method, finite element models, frequencies and forms of natural oscillations of arched vaults, median surfaces, plates, border conditions.
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  • For citation: Krasotina L. V., Robra J. Arched Vaults Made of Corrugated Sheets: Natural Vibration Frequencies. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2019, no. 12, pp. 18-24. (In English). DOI: 10.33622/0869-7019.2019.12.18-24.