Analytical Modelling of Transmission and Anchorage Length in Corroded Pre-Tensioned Concrete Elements

2021 ◽  
pp. 903-911
Author(s):  
Sergio Belluco ◽  
Nicola Fabris ◽  
Flora Faleschini
Keyword(s):  
Analytical Modelling ◽  
Anchorage Length ◽  
Concrete Elements

scholarly journals Non-uniform corrosion of steel rebar and its influence on reinforced concrete elements` reliability

2020 ◽  
Vol 26 (2) ◽  
pp. 67-72 ◽  
Author(s):  
Yaroslav Blikharskyy ◽  
Nadiia Kopiika ◽  
Jacek Selejdak
Keyword(s):  
Reinforced Concrete ◽  
Analytical Modelling ◽  
Uniform Corrosion ◽  
Material Anisotropy ◽  
Topical Problem ◽  
Structural Element ◽  
Reliable Technique ◽  
Steel Rebar ◽  
Corrosion Of Steel ◽  
Concrete Elements

AbstractRemarkable 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.

SETTING A DIAGRAM APPROACH TO CALCULATING VIBRATED, CENTRIFUGED AND VIBROCENTRIFUGED REINFORCED CONCRETE COLUMNS WITH A VARIATROPIC STRUCTURE

2020 ◽  
pp. 22-34
Author(s):  
Л. Р. Маилян ◽  
С. А. Стельмах ◽  
Е. М. Щербань ◽  
М. П. Нажуев
Keyword(s):  
Experimental Data ◽  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Cross Section ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
The Cross ◽  
Concrete Elements ◽  
Diagram Approach

Состояние проблемы. Железобетонные элементы изготавливаются, как правило, по трем основным технологиям - вибрированием, центрифугированием и виброцентрифугированием. Однако все основные расчетные зависимости для определения их несущей способности выведены, исходя из основного постулата - постоянства и равенства характеристик бетона по сечению, что реализуется лишь в вибрированных колоннах. Результаты. В рамках диаграммного подхода предложены итерационный, приближенный и упрощенный способы расчета несущей способности железобетонных вибрированных, центрифугированных и виброцентрифугированных колонн. Выводы. Расчет по диаграммному подходу показал существенно более подходящую сходимость с опытными данными, чем расчет по методике норм, а также дал лучшие результаты при использовании дифференциальных характеристик бетона, чем при использовании интегральных и, тем более, нормативных характеристик бетона. Statement of the problem. Reinforced concrete elements are typically manufactured according to three basic technologies - vibration, centrifugation and vibrocentrifugation. However, all the basic calculated dependencies for determining their bearing capacity were derived using the main postulate, i.e., the constancy and equality of the characteristics of concrete over the cross section, which is implemented only in vibrated columns. Results. Within the framework of the diagrammatic approach, iterative, approximate and simplified methods of calculating the bearing capacity of reinforced concrete vibrated, centrifuged and vibrocentrifuged columns are proposed. Conclusions. The calculation according to the diagrammatic approach showed a significantly better convergence with the experimental data than that using the method of norms, and also performs better when using differential characteristics of concrete than when employing integral and particularly standard characteristics of concrete.

scholarly journals Analytical Modeling of Surface-Mounted and Consequent-Pole Linear Vernier Hybrid Machines

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 26251-26259
Author(s):  
Christoff D. Botha ◽  
Maarten J. Kamper ◽  
Rong-Jie Wang ◽  
Abdoulkadri Chama
Keyword(s):  
Analytical Modelling ◽  
Consequent Pole

scholarly journals Experimental investigation and analytical modelling of shear strength of thin walled textile-reinforced UHPC beams

2021 ◽  
Vol 231 ◽  
pp. 111735
Author(s):  
Philipp Preinstorfer ◽  
Patrick Huber ◽  
Tobias Huber ◽  
Benjamin Kromoser ◽  
Johann Kollegger
Keyword(s):  
Experimental Investigation ◽  
Shear Strength ◽  
Analytical Modelling ◽  
Thin Walled
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