New in the Code of Rules for the Calculation and Design of Concrete and Reinforced Concrete Structures

Information is provided on amendment No. 2 to SP 63.13330.2018 “Concrete and reinforced concrete structures. The main provisions”. The list of changes made to the set of rules is given. Some of the changes were adopted in order to eliminate unnecessary requirements and are of an editorial and clarifying nature. Another part of the changes concerns the refinement of methods for calculating reinforced concrete structures. The list of reinforced concrete structures to which the requirement for the absence of cracks in the section is clarified. The requirements for the assignment of minimum classes of concrete of structures, including structures exposed to repeated loads, are clarified and supplemented. The list of methods for anchoring transverse reinforcement is expanded. The main part of the changes concerns the clarification of the instructions for the calculation of reinforced concrete structures. The provisions are clarified and new dependencies are included for calculating inclined sections of reinforced concrete structures on the effect of transverse forces, taking into account the influence of longitudinal compressive and tensile forces. The main provisions and dependencies for calculating the endurance of structures operating under the influence of multitime repeated load are given. The rules and procedure for determining the coefficients of working conditions for concrete and reinforcement when exposed to multitime repeated load are included.

T.A. MUKHAMEDIEV, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
S.A. ZENIN, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Research, Design and Technological institute of Concrete and Reinforced Concrete – NIIZHB named after A.A. GvozdevJSC “Research Center “Stroitel’stvo” (6, build. 5, 2-nd Institutskaya Street, Moscow, 109428, Russian Federation)

1. Zenin S.A., Sharipov R.Sh., Kudinov O.V. Influence of compressive stresses on the strength of inclined sections of non-centrally compressed reinforced concrete elements. Beton i Zhelezobeton [Concrete and Reinforced Concrete]. 2021. No. 1 (603), pp. 44–52.
2. Mukhamediev T.A., Zenin S.A. Taking into account the influence of longitudinal forces in the calculation of reinforced concrete structures on inclined sections. Collection of reports Modern problems of calculation and design of reinforced concrete structures of multi-storey buildings: collection of reports of the International Scientific Conference dedicated to the 100th anniversary of the birth of P.F. Drozdov. Moscow: MGSU, EBS DIA, 2013. 328 р. (In Russian).
3. Zenin S.A., Krylov S.B., Sharipov R.Sh., Kudinov O.V. To update of the methodology for calculating reinforced concrete structures for endurance. Beton i Zhelezobeton [Concrete and Reinforced Concrete]. 2021. No. 1 (603), pp. 17–22. (In Russian).
4. Sharipov R.Sh., Volkov Yu.S., Zenin S.A., Krylov S.B. On the issue of developing requirements for the method of calculating reinforced concrete structures under the action of repeatedly repeated loads. Bulleten stroitelnoy tehniki. 2020. No. 7, pp. 53–56. (In Russian).
5. Sharipov R.Sh., Zenin S.A., Krylov S.B., Volkov Yu.S. Evaluation of methods for calculating reinforced concrete structures for the ultimate state of fatigue. Vestnik NITS “Stroitelstvo”. 2020. No. 4 (27), pp. 148–159. (In Russian).
6. Krylov S.B., Zenin S.A., Sharipov R.Sh., Volkov Yu.S., Tsigulev A.O. Determination of stresses in the reinforcement of reinforced concrete structures for calculating the limit state for fatigue. Stroitelnaya mehanika i raschet sooruzheniy. 2020 No. 5 (292), pp. 4–11. (In Russian).