Strength calculation of supportareas in reinforced concrete beam structures

Dorofeev, V. S.; Karpyuk, V. M.; Krantovskaya, Е. Nikolaevna; Petrov, N. N.; Petrov, Anatoliy

doi:10.22227/1997-0935.2013.12.55-67

Cited by 2 publications

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“…The critical forces and the bearing capacity (М u,m ) in section II-II can also be easily determined with the aid of the layer-wise deformation model [8] adapted by the authors or by a non-linear finite element calculation with the use of modern software packages [9][10][11].…”

Section: Failure By Oblique Sections Caused By the Prevailing Action ...mentioning

confidence: 99%

“…; If it happens in calculation of T-sections or H-sections that t f X h = , then it can be assumed in the following calculation that I ct t A b X = ⋅ . More precisely, in this case I ct A can be determined according to [23].…”

Section: / (mentioning

confidence: 99%

“…If condition(23) is not satisfied, then, if Mu,M ≤ Mu,M+V, in the second and the following approximations * cu ξ should be increased as compared with the previous value, and if Mu,M+V < Mu,M…”

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confidence: 99%

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Calculation Models of the Bearing Capacity of Span Reinforced Concrete Structure Support Zones

Karpiuk

Syomina

Antonova

2019

MSF

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Experience gained in design, erection and operation of span reinforced concrete structures has proved that practically all of them are subject to complex stress-strain state. At that, the researchers pay considerable greater attention to calculation of strength, deformation analysis and determination of crack resistance in normal cross-sections than to calculation of their support zones, including oblique sections, which results are generally taken into account for determining the section dimensions and the quantity of the cross reinforcement.

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Section: Failure By Oblique Sections Caused By the Prevailing Action ...mentioning

confidence: 99%

Section: / (mentioning

confidence: 99%

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Calculation Models of the Bearing Capacity of Span Reinforced Concrete Structure Support Zones

Karpiuk

Syomina

Antonova

2019

MSF

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“…Далеко за межами України відомі роботи Є. М. Бабича [5], М. С. Торяника, П. Ф. Вахненка, Г.Х. Масюка [6], В. П. Митрофанова [7,8], В. І. Колчунова [9], А. М. Павлікова [10], Й. Й. Лучка [11], В. С. Дорофєєва [12,13,14,15], М. І. Карпенка [16], В. І. Корсуна [17], В. М. Карпюка [18][19][20][21], Л. І. Стороженка, Д. А. Ярмоленка, П. С. Гомона [22], О. О. Заречанського [23], М. С. Зінчука [24], С. Х. Кара-петяна [25], О. І. Корнійчука [26] Проведений авторами статті аналіз та подальші дослідження показали, що характер напружено-деформованого стану роботи і руйнування складнонапружених залізобетонних елементів під дією повторних навантажень високих рівнів суттєво відрізняється від прийнятих в указаних методах розрахункових схем і моделей, а наявних рекомендацій в опублікованих джерелах недостатньо для достовірного прогнозу їхньої міцності, тріщиностійкості та деформативності.…”

Section: аналіз останніх дослідженьunclassified

Influence of Cyclic Alternating Loading on the Strength, Crack Resistance and Deformability of Bending Reinforced Concrete Elements

Karpyuk¹,

Albu²,

Danilenko³

et al. 2014

bttrp

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Purpose. To study the systemic influence of the high levels of low-cycle alternating loading and other factors on the strength, crack resistance and deformability of girder reinforced concrete structures and to improve engineering methodology of their calculation based on the deformation method, taking into account these and other factors. Methodology. Experimental researches are performed according to the theory of planning by means of the threelevel four-factor plan of Boks B4 for the studying of these and other questions. Specimens are rectangular reinforced concrete beams with the sizes 200×100 mm, with the length of 1975 mm, reinforced with two flat welded frames with symmetric longitudinal bottom and top reinforcement 2 ø 14А500С and transverce reinforcement 2ø3, 4, 5 ВрI with the relative shear span a / h0 1, 2, 3, made from heavy concrete of the grades С 16/20 (В20), С 30/35 (В35), С 40 / 50 (В50), and tested by low-cycle alternating loading of different levels. Findings. The results of the tests of these specimens-beams, produced at the average values of constructive factors and tested on the action of low-cycle alternating loading with the levels   0,5 ;   0,65 ;   0,8 are considered in this paper.Originality. New experimental data on the strength, crack resistance and deformability of specimens-beams, reached the end of their load-bearing capacity by means of low-cycle alternating loading of high levels were first obtained. Fulfillment of the planned experimental and theoretical researches in full will give the opportunity to assessthe systemic impact of structural factors and factors of external influence on these parameters in particular, and in interaction, improve the methodology for strength calculation both inclined and normal sections of the span elements, as well as their crack resistance and deformability on the basis of the deformation model, to develop proposalsfor improving the current regulatory methods for calculating of their bearing capacity. Practical value. The results will be used in the educational process in university of building profile, the design of span reinforced concrete structures that are affected by low-cycle alternating loads with high levels, which will increase their reliability and durability, make informed decisions on rational using of materials.

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Strength calculation of supportareas in reinforced concrete beam structures

Cited by 2 publications

References 0 publications

Calculation Models of the Bearing Capacity of Span Reinforced Concrete Structure Support Zones

Calculation Models of the Bearing Capacity of Span Reinforced Concrete Structure Support Zones

Influence of Cyclic Alternating Loading on the Strength, Crack Resistance and Deformability of Bending Reinforced Concrete Elements

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