Development of the procedure for the estimation of reliability of reinforced concrete beams, strengthened by building up the stretched reinforcing bars under load

Khmil, Roman; Tytarenko, Roman; Blikharskyy, Yaroslav; Vegera, Pavlo

doi:10.15587/1729-4061.2018.142750

Cited by 34 publications

(10 citation statements)

References 11 publications

(17 reference statements)

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“…№ 24_______________________(стор. [11][12][13][14][15][16][17][18] -15 -9. Формування властивостей поперечного перетину для завдання параметрів скінченному елементу типу балка Рис.6.…”

Section: рис 5 визначення геометричних характеристик поперечного перетинуunclassified

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2020

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Збірник наукових праць видається з 1992 р., періодичність -1 раз на рік. Засновник і видавець -Одеська державна академія будівництва та архітектури. Свідоцтво про державну реєстрацію КВ 16172-4644Р від 02.12.2009 Збірник наукових праць входить до переліку наукових фахових видань України, у яких можуть публікуватися результати дисертаційних робіт. Наказ МОН України № 409 від 17.03.2020 року (категорія Б).Збірник наукових праць включено до міжнародної науковометричної бази WorldCat.У збірнику представлені результати наукових і експериментально-теоретичних досліджень будівельних конструкцій з металу та деревини. Призначений для наукових працівників, спеціалістів проектних установ та виробничих підприємств будівельної галузі, аспірантів та магістрів навчальних закладів.

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Section: рис 5 визначення геометричних характеристик поперечного перетинуunclassified

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2020

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“…At the moment of strengthening, the building structures are mainly under load, according to [23], the reliability of the strengthened concrete element depends on this value. As a result of the investigations of the stressed state of reinforced concrete beams, strengthened by lengthening of stretched reinforcement bars under the load action, the authors [24] proposed two new methods for assessing the reliability of reinforced concrete elements.…”

Section: Introductionmentioning

confidence: 99%

Bearing capacity of damaged reinforced concrete beams strengthened with metal casing

Karpiuk

Danilenko²,

Karpiuk³

et al. 2021

Acta Polytech

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Experimental data on the bearing capacity of damaged reinforced concrete beams with the dimensions of 2000×200×100 mm, reinforced with prestressed metal casings, are presented. Damaging in the form of through normal and crossing inclined cracks, as well as excessive vertical moving of the beam were obtained during previous tests for the effect of high-level transverse alternating loads.The authors of the article have developed a method and equipment for restoring and strengthening damaged reinforced concrete beams using a casing. Beams are manufactured and tested in accordance with the three-level design of an experiment.Previously damaged and reduced to the ultimate (pre-emergency) state, the beams were strengthened with the declared method and equipment, and then retested. New data on the bearing capacity of ordinary and damaged beams, as well as reinforced concrete elements strengthened with casings and tested for the action of transverse forces and bending moments were obtained. The research results are presented in the form of experimental-statistical dependences of the bearing capacity of the support areas, deformability and crack resistance of the investigated elements on the ratio of the most significant design factors and external factors. A comparative analysis of the influence of these factors on the main parameters of the bearing capacity of ordinary as well as previously damaged and then strengthened test beams is carried out.The possibility and appropriateness of using the proposed method of strengthening reinforced concrete beams damaged by through normal and cross-inclined force cracks in the conditions of an existing production has been experimentally proved.

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“…In particular the investigations of special mineral additives like zeolite should be noted, which improve durability and corrosion resistance of cements for concrete (Sobol et al, 2014). Many factors cause necessity for the repairing or strengthening (Blikharskyy et al, 2018;Khmil et al, 2018;Krainskyi et al, 2018a;Abu-Tair et al, 1996;Vegera at al., 2018) buildings and constructions. Often it is damages (Kos et al, 2017) or corrosion (Selejdak et al, 2018;Lipiński, 2017;Pliszka and Radek, 2017) of construction obtained during its lifetime from negative environment influence.…”

Section: Introductionmentioning

confidence: 99%

Corrosion of Reinforce Bars in RC Constructions

Blikharskyy

Selejdak

Blikharskyy

et al. 2019

System Safety: Human - Technical Facility - Environment

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In this article presented results of researching corrosion of steel bars in aggressive environment in time under loading. For researching were used special equipment. The experience and research works shown that steel bars in the crack cross-section area can be corrode. With increasing width of crack in re-bars and power of aggressive of environment increased the level of corrosion and decreased time of progress. The level of danger of corrosion in the crack in depend of specialty of steel bars. It is geometry parameters of steel bars and characteristic of corrosive behaviour. The general tendency of the influence of various defects on the strength of steels is widely studied experimentally and theoretically only for geometrically correct stress concentrators. For damages that are irregular in shape, such as corrosion ulcers, significantly less researching in each case must experiment to find their effect on the mechanical properties of steels. In this work the influence of simultaneous action of the aggressive environment and loading on strength of steel re-bars has been described.

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Development of the procedure for the estimation of reliability of reinforced concrete beams, strengthened by building up the stretched reinforcing bars under load

Cited by 34 publications

References 11 publications

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Bearing capacity of damaged reinforced concrete beams strengthened with metal casing

Corrosion of Reinforce Bars in RC Constructions

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