Open AccessThe influence of open cracks in compressed area of concrete on behaviour of bending elements of frame buildings under special alternating loads
Author(s) -
S.O. KURNAVINA,
I.V. TSATSULIN
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1425/1/012037
Subject(s) - structural engineering , bending , frame (networking) , materials science , composite material , engineering , mechanical engineering
In design of seismic resistant reinforced concrete constructions it is necessary to take into account the influence of plastic strains on stress-strain state and on possibility of appearance of open cracks in compressed area of concrete while the sign change of the load. In order to evaluate the influence of this factor the design of reinforced concrete beams models with regard to elastoplastic diagrams of materials has been carried out. The dependences of residual cracks height, of bearing capacity and of limit value of coefficient of plasticity in the second half-cycle on the maximum coefficient of plasticity in the first half-cycle have been built. The conclusion has been made about the decrease of bearing capacity of bending elements, caused by the development of plastic strains and due to them the presence of open cracks in compressed area of concrete. The limit state criterion has been offered, preventing brittle fracture on following cycles of loading.