Published since 1923
DOI: 10.33622/0869-7019
Russian Science Citation Index (RSCI) на платформе Web of Science

  • Redistribution Of Bending Moments In Slabs With External Reinforcement
  • UDC 624.044.3:69.059.3
    doi: 10.33622/0869-7019.2023.02.53-56
    Oleg A. SIMAKOV,
    Moscow State University of Civil Engineering (National Research University), Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
    Abstract. An analysis of the numerical solution of the problem of redistribution of bending moments in a monolithic beamless, capless slab with local strengthening by external reinforcement caused by an increase in the payload is presented. The task of increasing the bearing capacity of existing load-bearing structures of the ceiling is urgent. As a rule, this is necessary when changing the functional purpose of the premises or placing special heavy equipment of large mass. A typical solution for strengthening monolithic floors with the use an external reinforcement is the local reinforcement of the support and span zones. The algorithms for calculating the structures reinforcement given in the normative and technical literature are limited by the general rules for determining the bearing capacity of strengthened sections without considering the issues of redistribution of efforts. In this regard, the article discusses various algorithms for calculating the reinforcement of structures currently used. On the basis of these algorithms, general recommendations have been developed to reduce the overall error of reinforcement selection, which will make it possible to strengthen reinforced concrete structures with external reinforcement with a sufficient level of both reliability and load-bearing capacity reserve.
    Keywords: strengthening of reinforced concrete structures, external reinforcement, carbon fiber, redistribution of efforts, physical nonlinearity
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  • For citation: Simakov O. A. Redistribution of Bending Moments in Slabs With External Reinforcement. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2023, no. 2, pp. 53-56. (In Russ.). doi: 10.33622/0869-7019.2023.02.53-56