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Wyszukujesz frazę "rebar" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Non-uniform corrosion of steel rebar and its influence on reinforced concrete elements` reliability
Autorzy:
Blikharskyy, Yaroslav
Kopiika, Nadiia
Selejdak, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/1839520.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
corrosion
steel rebar
material anisotropy
mathematical modeling
korozja
stalowy pręt zbrojeniowy
anizotropia materiałowa
modelowanie matematyczne
Opis:
Remarkable place of reinforced concrete structures in construction field has been noted in wide number of recent researches. Subsequently, their degradation due to aggressive environment has become the topical problem nowadays. Therefore, the formulation of reliable technique for corroded element strength decrement is of great importance, and could be achieved only with the use of complex experimental and theoretical analysis. In this article an attempt is made to propose the mathematical approach to corrosive process modelling, taking into consideration the specifics of its development. According to thorough literature review on existing studies, main specifics of the process were indicated for further suppositions and assumptions formulation. Accordingly, the complex theoretical investigation with corresponding mathematical computations was conducted and results of analytical modelling were discussed. As the initial data for analytical modelling results of previously conducted experiments were used. Analysis of the obtained results shows rather high correspondence with the real conditions of structural element exploitation, taking into consideration material anisotropy and complexity of the corroded zone spread along the rebar cross-section. Proposed methodology for limit force decrease evaluation in general demonstrates reliable results and could be used for further evaluation of corrosion impacts on reinforced concrete elements bearing capacity.
Źródło:
Production Engineering Archives; 2020, 26, 2; 67-72
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stress-strain state of damaged reinforced concrete bended elements at operational load level
Autorzy:
Kopiika, Nadiia
Vegera, Pavlo
Vashkevych, Rostyslav
Blikharskyy, Zinoviy
Powiązania:
https://bibliotekanauki.pl/articles/23967534.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
korozja
pręt stalowy
belki o rzeczywistych wymiarach
uszkodzone belki
corrosion
steel rebar
real size beams
damaged beams
Opis:
Each structure is exposed to different influences during operation. As a result, there are various defects and damages of these elements that affect their safe operation. The article presents the results of experimental studies of reinforced concrete beams with damages to stretched reinforcement made with and without initial load application. As the damages were accepted one or five Ø5.6 mm holes. In one case, the damage was made until the beam destruction (up to the 8.4 mm opening) Control samples of both series were destroyed due to crushing of the compressed zone of concrete. Samples that were damaged without initial loading collapsed due to rupture of the stretched reinforcement. The same type of failure was identified for damages at the operational load level.
Źródło:
Production Engineering Archives; 2021, 27, 4; 242--247
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of the optimum percentage of high strength bars in RC beams with combined reinforcement using FEM
Autorzy:
Selejdak, Jacek
Blikharskyy, Yaroslav
Bobalo, Taras
Kopiika, Nadiia
Powiązania:
https://bibliotekanauki.pl/articles/973049.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
deformability
serviceability
combined reinforcement
high-strength rebar
steel plate
belka żelbetowa
beton zbrojony
konstrukcja żelbetowa
odkształcalność
blacha stalowa
FEM
pręt zbrojeniowy
Opis:
In this work on the basis of the developed and tested mathematical model, the numerical experiment is conducted in order to study in more detail the specifics of performance of concrete beams` with combined reinforcement. For this purpose nine series of reinforced concrete beams with different combination of steel bars (A400C, At800, A1000) and ribbon reinforcement (C275) were modeled. In the developed series two classes of concrete were used: C50/60, C35/45. The functions derived on the basis of mathematical modeling allow us to determine the recommended percentage of high-strength reinforcement of common reinforced concrete structures with single reinforcement. Therefore, the possibility is obtained to reduce the total structures` reinforcement percentage, increasing their deformability by the specified value without affecting the bearing capacity.
Źródło:
System Safety : Human - Technical Facility - Environment; 2020, 2, 1; 230-236
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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