Technical Journal, Vol. 14 No. 4, 2020.
Preliminary communication
https://doi.org/10.31803/tg-20191125075359
Research of the Residual Bearing Capacity and the Work of Damaged Reinforced Concrete Beams’ Inclined Sections
Zeljko Kos
; University North, Department of Civil Engineering Jurja Krizanica 31B, 42000 Varazdin, Croatia
Yevhenii Klymenko
orcid.org/0000-0002-4502-8504
; Odessa State Academy of Civil Engineering and Architecture, 4 Didrihsona st., 65029 Odessa, Ukraine
Kostiantyn Polianskyi
orcid.org/0000-0002-2615-3975
; Odessa State Academy of Civil Engineering and Architecture, 4 Didrihsona st., 65029 Odessa, Ukraine
Andjelko Crnoja
orcid.org/0000-0001-9557-9411
; Odessa State Academy of Civil Engineering and Architecture, 4 Didrihsona st., 65029 Odessa, Ukraine
Abstract
The article is devoted to studies about the stress-strain state and the residual bearing capacity of inclined sections of reinforced concrete beams with concrete damages in the compressed zone near support areas. The developed method of calculating the bearing capacity of the inclined sections of damaged beams is described. The numerical test of prototypes was performed in the LIRA-CAD 2017 software complex. A comparison of the results of laboratory tests, a numerical experiment and calculation results by the proposed method is shown. It is stressed that with an increase in the area of damage, the bearing capacity decreases. The nature of the change in the stress-strain state under the presence of damage is described. It is pointed out that in the damaged samples, there is an inclination of the neutral axis in the cross section of the element – it tilts, the neutral axis becomes, almost, parallel to the front of the damage.
Keywords
damaged RC beams; inclined section; method of calculation; residual bearing capacity; stress-strain state
Hrčak ID:
247415
URI
Publication date:
9.12.2020.
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