%0 Journal Article %T CALCULATION OF CENTRALLY COMPRESSED CONCRETE FILLED STEEL TUBULAR COLUMNS OF ANNULAR SECTION TAKING INTO ACCOUNT PHYSICAL NONLINEARITY %A Khashkhozhev, K.N. %A Avakov, A.A. %K pipe concrete, annular section, bearing capacity, deformation theory of plasticity, finite difference method, physical nonlinearity %J Construction and Architecture %D 2021 %N 9 %P 4 %I Publishing Center RIOR