External reinforcement of the consolebeam substroup system
M.A. Ryazanov, graduate student;
S.I. Roschina, Doct. tech. Sciences, prof.;
I.I. Shishov, Cand. tech. Sciences, Assoc.;
M.V. Lukin, Cand. tech. Sciences, Assoc.;
M.S. Lisyatnikov, Cand. tech. Sciences;
Vladimir state University named after Alexander Grigorievich and Nikolai Grigorievich Stoletovs
Abstract. Тhe article considers the cantilevergirder system of a singlestorey industrial building consisting of two types of beams: the first ones are based on twin columns – two columns with a distance between them of 3,6 m – and have consoles in both directions, the second on the console of the first. The rafters, located in 6 m increments, are supported by the second type of beams, which have an external reinforcement – the ends of the adjacent beams are joined to each other by reinforcing bars, which, when the beams are loaded, stretch and create unloading moments. It is shown that external reinforcement reduces the consumption of concrete and allows the use of A500 or A400 core reinforcement for reinforcement (including external reinforcement) without prestressing, which reduces the complexity of manufacturing and the cost of beams. At the same time, the stiffness of the underlining system and the coating as a whole are significantly increased.
Key words: paired columns; cantilevergirder underlay system; firsttype and secondtype trimming beam; external reinforcement; unloading moments.