EXPERIMENTAL INVESTIGATIONS OF THE INFLUENCE OF SMALL CYCLIC REPETITIVE AND SIGN-LOADED LOADS ON THE DEVELOPMENT OF CRACKS OF INDISTINGUISHABLE REINFORCED CONCRETE BEAMS

Visnyk LNAU: Architecture and Farm Building 2018 №19: 79-83

EXPERIMENTAL INVESTIGATIONS OF THE INFLUENCE OF SMALL CYCLIC REPETITIVE AND SIGN-LOADED LOADS ON THE DEVELOPMENT OF CRACKS OF INDISTINGUISHABLE REINFORCED CONCRETE BEAMS

Masyuk H., Candidate of Engineering Science
Yushchuk O., graduate student
National University of Water Enviromental Engineering

https://doi.org/10.31734/architecture2018.19.079

Annotation

In the given article the results of experimental researches of the work of two-pass non-separable reinforced concrete beams under the influence of low-cyclic repetitive and small-cycle alternating loads are given. The work of the tested beams and the change of their stress-strain state from the beginning of loading up to destruction have been analyzed. The analysis showed that the stress-strain state, crack resistance and deformability of reinforced concrete indistinguishable two flying beams for the effects of low-cyclic repetitive and small-cycle alternating loads significantly differ from the same beams, experiencing a one-time static load. The effect of the above loads on experimental samples not only reduces their bearing capacity, but also reduces crack resistance, increases deformability, width of crack opening and deflection.

Key words

reinforced concrete double-conductor beams, small-cycle repeated and sign-loaded loads, crack resistance, width of opening of cracks

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