Stress-strain state of a frameless vaulted coating made of thin-walled cold-bent steel profiles, taking into account design features
M. A. Chaika, A. N. Mironov, V. A. Mazur, E. N. Olenich
FSBEI HE «Donbas National Academy of Civil Engineering and Architecture»
Annotation: The paper considers the stress-strain state of a frameless vaulted coating made of thin-walled cold-curved steel profiles of trapezoidal shape when changing the main design features such as: a variant of the device of the support unit, the presence of end stiffeners, the boom of the arch and the thickness of the profile. Finite element models of the vaulted covering from profiles of the type in question have been created in the LIRA-SAPR 2015 software package, taking into account the requirements. Based on the developed calculation models, a numerical study and analysis of the influence of various design features on the operation of a frameless vaulted coating were performed. Based on the results obtained, it was revealed that a significant impact on the stress-strain state of the coating in this region is exerted by snow load with the most unfavorable application scheme in the form of unevenly distributed along the vault and unevenly distributed on one half of the span of the vault. Based on the numerical studies carried out, it is recommended to build vaulted coverings with spans of 10 meters from profiles with a thickness of 0,8 mm.
Keywords: stress-strain state, frameless vaulted coating, thin-walled cold-bent steel profiles, design features.
Pages: 181-193.
Link for citation: Chaika, M. A.; Mironov, A. N.; Mazur, V. A. [et al.]. Stress-strain state of a frameless vaulted coating made of thin-walled cold-bent steel profiles, taking into account design features. – Text : electronic. – In: Metal Constructions. – 2023. – Vol. 29, N 4. – Р. 181-193. – URL: https://donnasa.ru/publish_house/journals/mk/2023-4/st_02_chaika_mironov_mazur_olenich.pdf (date of access: 22.07.2024). (in Russian)
Vol. 29, N 4 (2023)Journal: Metal Constructions
Publish house: Donbas National Academy of Civil Engineering and Architecture