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Wyszukujesz frazę "reinforcement" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Computer modelling of RC beams reinforced with high strength rebars and steel plate
Autorzy:
Bobalo, Taras
Blikharskyy, Yaroslav
Krainskyi, Pavlo
Volynets, Myhailo
Powiązania:
https://bibliotekanauki.pl/articles/104114.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
load-carrying ability
deformability
mixed reinforcement
high-strength rebar
external reinforcement
nośność
odkształcalność
mieszane zbrojenie
pręt zbrojeniowy o wysokiej wytrzymałości
wzmocnienie zewnętrzne
Opis:
The use of computers provides the opportunity to analyse and design complex structures, taking into account the geometric and physical nonlinearity of construction materials. In the article the study of stress-strain state of mixed steelconcrete beams, were presented. The results of this study showed that the method of calculation according to designe codes gave satisfactorily results of calculated strength compared with experiments. However, these methodes do not provide complete information of structural performance at all levels of load. For a more complete study of the stress-strain state and the physical nature of the processes occurring in steel-concrete structures reinforced with a mixed reinforcement, the calculation method using "Lira" software complex is proposed. The method of calculation is based on the finite element method. The calculation is made taking into account physical nonlinearity and real diagrams of σ-ε of materials using the nonlinear deformation law №14 of "Lira" software complex. The proposed method of calculation allows to determine the values of bearing capacity, the development of deformations and the beginning of crack formation, as well as stresses at all load levels.
Źródło:
Quality Production Improvement - QPI; 2019, 1, 1; 304-310
2657-8603
Pojawia się w:
Quality Production Improvement - QPI
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical modelling of stress-strain state of steel-concrete beams with combined reinforcemenent
Autorzy:
Selejdak, Jacek
Bobalo, Taras
Blikharskyy, Yaroslav
Dankevych, Iryna
Powiązania:
https://bibliotekanauki.pl/articles/26081279.pdf
Data publikacji:
2023
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
wzmocnienie łączone
pręty zbrojeniowe o wysokiej wytrzymałości
konstrukcje stalowo-betonowe
projektowanie konstrukcji żelbetowych
wzmocnienie zewnętrzne
combined reinforcement
high-strength rebar
steel-concrete structures
design of RC structures
external reinforcement
Opis:
Most of the modern computer software for the building structures` calculation is based on mathematical dependencies which make it possible to analyse rather complex stress-strain state of structures subjected to loading. As a rule, the calculation is based on the finite element method and is reduced to the calculation of deformations arising in structures due to the action of external forces with the use of real strain diagrams of materials, σ-ε diagrams for concrete and reinforcement. Modern normative regulations for reinforced concrete structures` calculation are also based on the deformation model using material deformation diagrams, which are as close to the real ones, as possible. Therefore, this study was aimed to investigate in more detail the stress-strain state and the physical essence of the processes occurring in reinforced concrete structures with combined reinforcement according to mathematical approaches and regulations of DBN B.2.6-98:2009 and DSTU B. In 2.6-156:2010. Namely, in the research is analysed the combined reinforcement of S245 steel tapes and A1000 rebar, which is used in the production of reinforced concrete elements. The results of mathematical modelling were compared with the calculation results, according to DBN B.2.6-98: 2009 and DSTU B. B 2.6-156:2010, as well as with field experimental data. Therefore, the conclusion could be made, whether it is possible to use this technique with sufficient accuracy to calculate reinforced concrete structures with combined reinforcement.
Źródło:
Production Engineering Archives; 2023, 29, 1; 108--115
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the percentage of reinforcement by un-stressed rebar on the deformability of pre-stressed RC beams
Autorzy:
Blikharskyy, Yaroslav
Selejdak, Jacek
Bobalo, Taras
Khmil, Roman
Volynets, Myhailo
Powiązania:
https://bibliotekanauki.pl/articles/23965519.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
wzmocnienie
belka RC
próbki w rzeczywistym rozmiarze
wyniki eksperymentalne
pre-stressed
reinforcement
RC beam
real size samples
experimental results
Opis:
This article presents the materials of deformability studies of pre-stressed steel-concrete beams reinforced with a package of reinforcement with different ratio of tape and rebar in the pure bending moment zone. The aim of the research was determination of the reinforcement percentage influence, for pre-stressed reinforced concrete beams reinforced with a package of reinforcement on their deformability. Also, the aim was to evaluate the effectiveness of using pre-stressed rebar in combined reinforcement. The practical significance of the experimental research is to study the deformability in pre-stressed bending elements with external tape and rebar reinforcement, taking into account the influence of different ratios of reinforcement areas within the combined reinforcement and development of proposals for such structures` calculation and design. The scientific novelty of the research is in obtaining the deformability characteristics of reinforced concrete beams reinforced with a package of reinforcement (tape and steel bars with periodic profile) with different ratios in the case of static loads` action.
Źródło:
Production Engineering Archives; 2021, 27, 3; 212--216
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 1-4 z 4

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