About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Krishan A.L. – doctor of technical science, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Melnichuk A.S. – assistant E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Magnitogorsk State Technical University of G.I. Nosov The organization address: 455000, Russia, Magnitogorsk, Lenin pr., 38 |
| Title of the article | Durability and strain capacity of short concrete-filled steel tube columns with square cross-section |
| Abstract. | The concrete-filled steel tube columns (CFST) carries the high durability, reliability, a low material capacity and low cost. Using of the CFST currently constrained by absence of a method of calculation of their durability considering the main features of their intense-strained state in construction norms. Durability of the short CFST usually defined as the sum of the strengths of the concrete core and the steel pipe. However, the core and the shell of the CFST with square cross-section experienced by a complex stress-strain state. The concrete core column experiences multi-axial compression. In addition, the stress distribution in the transverse direction over the cross section core varies, that considered by proposed theoretical formula based on statistical processing of the experimental data. The wall of the shell of CFST is in the complex stress state and working not only in the tension-compression (as in the columns with circular cross-section), but also to bending. This fact considered by the coefficient of working conditions, which depends on the type of the type of a shell. Obtained dependences for calculation of durability and strain capacity of the CFST based on well-known provisions of mechanics of a solid state and allow defining the strength and deformation properties of the short CFST with round, circular and square cross-sections. |
| Keywords. | Concrete-filled steel tube columns, square, cross-section, durability, stress-strain behavior, concrete core, steel tube. |
| For citations: | Krishan A.L., Melnichuk A.S. Durability and strain capacity of short concrete-filled steel tube columns with square cross-section // Izvestiya KGASU. 2014. №3(29) P.46-50. |
