New in Rating of Steel Fiber Concrete and Calculations of Steel Fiber Concrete Structures

Principles of the classification and the system of specified strength characteristics of steel fiber concrete proposed in a draft code of rules “Steel Fiber Concrete Structures. Design Rules” are outlined. Main differences in the methods for calculation of steel fiber concrete structures outlined in the draft code of rules from the provisions of the existing SP 52-104–2006 “Steel Fiber Concrete Structures” are considered. The scheme of the bending test of a steel fiber concrete beam-sample is shown. Diagrams of the deformation of steel fiber concrete in the course of compression and tension, the scheme of forces and the plot of stresses in the section normal to the longitudinal axis of a bended steel fiber concrete ele- ment of rectangular cross-section when calculating its strength with reinforcement and without reinforcement are presented. The attention is focused on the fact that when determining the curvatures under short-term loading, the diagrams of short-time deformation of compressed and tension steel fiber concrete are used for calculation; when determining the curva- tures under long-term loading, the diagrams of long-lasting deformation of steel fiber concrete with calculated characteristics for limit states of the second group are used.

T.A. MUKHAMEDIEV, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it. ),
B.S. SOKOLOV, Candidate of Sciences (Engineering) NIIZHB named after A.A. Gvozdev,

JSC Research Center of Construction (6, bldg 5, 2nd Institutskaya Street, 109428, Moscow, Russian Federation)

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