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

https://hrcak.srce.hr/247415

Publication date:

9.12.2020.

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