TAKING INTO ACCOUNT FLEXIBILITY WHEN CALCULATING THE STRENGTH OF CENTRALLY COMPRESSED SQUARE-SECTION TUBULAR CONCRETE COLUMNS
https://doi.org/10.33979/2073-7416-2023-108-4-47-56
Abstract
The method of calculating the load-bearing capacity of centrally compressed tubular concrete columns of square section is considered. The technique is based on the use of a nonlinear deformation model of reinforced concrete. Accepted deformation diagrams of concrete core and steel pipe take into account their complex stress state. The proposed method takes into account the variable stiffness of different sections in height of the compressed rod when assessing the effect of its flexibility. The maximum load corresponding to the loss of strength or stability of the element is determined by the same method using the same formulas. As a result, there is no need for a separate formula for calculating the critical force. A comparison of theoretical and experimental data indicates the acceptability of the proposed calculation methodology for project practice.
About the Authors
A. L. Krishan
Magnitogorsk State Technical University named after G.I. Nosov
Russian Federation
Russian Federation
Krishan Anatoly L., doctor of technical sciences, professor of the department of design and construction of buildings
Magnitogorsk
V. I. Rimshin
Moscow State University of Civil Engineering (MGSU)
Russian Federation
Russian Federation
Rimshin Vladimir Iv., Corresponding member of the RAASN, doctor of technical sciences, professor of the department of housing and communal complex
Moscow
M. A. Astafieva
Magnitogorsk State Technical University named after G.I. Nosov
Russian Federation
Russian Federation
Astafieva Maria An., candidate of technical sciences, associate professor of the department of design and construction of buildings
Magnitogorsk
A. A. Stupak
Magnitogorsk State Technical University named after G.I. Nosov
Russian Federation
Russian Federation
Stupak Alexandra Al., postgraduate student of the department of design and construction of buildings
Magnitogorsk
S. M. Anpilov
Novosibirsk State University of Architecture and Civil Engineering (NGASU)
Russian Federation
Russian Federation
Anpilov Sergey M., doctor of technical sciences, associate professor, professor of the department of reinforced concrete structures
Novosibirsk
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Review
For citations:
Krishan A.L., Rimshin V.I., Astafieva M.A., Stupak A.A., Anpilov S.M. TAKING INTO ACCOUNT FLEXIBILITY WHEN CALCULATING THE STRENGTH OF CENTRALLY COMPRESSED SQUARE-SECTION TUBULAR CONCRETE COLUMNS. Building and Reconstruction. 2023;(4):47-56. (In Russ.) https://doi.org/10.33979/2073-7416-2023-108-4-47-56
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