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https://hdl.handle.net/20.500.13044/46

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  • Rekord
    Modelling behaviour of high-strength concrete beams
    (Państwowa Szkoła Wyższa im. Papieża Jana Pawła II w Białej Podlaskiej, 2013) Smarzewski, Piotr
    The comparative analysis of the own numerical results with experimental results was presented for the examples of the reinforced high-strength concrete beams under static load. The arc-length method was used in combination with Newton- Raphson method to trace the complete response in load-deformation space. The comparison of the obtained results indicates on the correctness of the assumptions and constitutive models of the high-strength concrete and reinforcement steel, and the effectiveness of the solution method. Numerical results of smeared crack patterns are qualitatively agreeable, for the localization, the direction and the concentration with experimental results. The development of strain in outer concrete layer of the compression zone and the development of strain for longitudinal reinforcement have excellent agreement in the most presented cases. The full nonlinear load-deformation at midspan response of the model produced compares well with the experimental response taken from literature. In the presented paper the usefulness of the arc-length method was verifi ed on a spatial numerical model of the reinforced concrete beams with consideration of the concrete softening during compression and tension. The numerical solutions obtained for the reinforced concrete beams are coherent with the experimentally obtained results.
  • Rekord
    Exerimental studies of concrete beams reinforced longitudinally with steel and GFRP bars
    (Państwowa Szkoła Wyższa im. Papieża Jana Pawła II w Białej Podlaskiej, 2013) Tur, Victor ; Malykha, Uladzimir
    The presence article is part of research work aiming to contribute to the development of hybrid reinforcement system what combines GFRP (Glass Fiber Reinforced Polymer) and steel bars in an optimized arrangement of the bars, using potentialities that each material con provide. The special experimental studies of concrete beams reinforced with steel–GFRP bars were carried out. Results of the experimental studies indicate that presence of the steel bars contributes considerably to ductility and stiffness, reduces crack width and crack spacing values.
  • Rekord
    Calculation of the thin plates with the large deflections
    (Państwowa Szkoła Wyższa im. Papieża Jana Pawła II w Białej Podlaskiej, 2013) Tarasevich, Aliaksei ; Tur, Victor
    Very large displacement but small strain of very thin plates is studied using Kirchhoff theory. When plates are defl ected beyond a certain magnitude, the linear theory loses it’s validity and produces incorrect results. In order for an accurate large deflection solution, one needs to include the coupling between axial and transverse motion, which is geometric non-linearity.
  • Rekord
    Modern Materials, Installations and Construction Technologies
    (Państwowa Szkoła Wyższa im. Papieża Jana Pawła II w Białej Podlaskiej, 2013) Fic, Stanisław
    A rapid development in the field of materials, installations and construction technologies has been observed for decades. Consequently, the research carried out in terms of various categories allows for the implementation and application of many innovative solutions to the construction. The construction development is primarily determined by the availability of new materials and their application, which becomes a major determinant of progress and innovation. Nevertheless, the interest in the introduction of new materials to the construction industry is not decreasing. Even though successively introduced European standards in Poland aim at imposing the requirements in terms of materials, while they still treat briefl y the quality and quantity of the ingredients used in the composition. The knowledge of the physico-mechanical and physico-chemical properties of materials enables the selection of a more suitable and economical way of their application. At the same time, the properties of the materials must be related to the physical processes that occur in materials used to build various objects. Thus the materials determine such factors as the comfort of use, durability, safety, impact on man and the surrounding environment. Consequently, while introducing new materials and technologies, it is necessary to take sustainable development into account since it reduces CO2 emissions and becomes more environmentally friendly for man. This monograph constitutes a collection of articles in the area of materials, installations and construction technologies. In more than 20 articles, the authors present examples of solutions that allow to obtain a lot of information and knowledge on materials which are important from both the scientifi c and technical point of view. More importantly, the solutions are copyrighted since they result from experiments and theoretical research related to the areas of concern. The information and solutions described in the articles can be used as a study aid not only to students of architecture and civil engineering, but also for civil engineers involved in the design and construction of buildings and specialists in the area of engineering science.
  • Rekord
    Building Structures in Theory and Practice
    (Państwowa Szkoła Wyższa im. Papieża Jana Pawła II w Białej Podlaskiej, 2013) Fic, Stanisław
    This monograph is a collection of 14 articles relating to components and structural systems made of different materials. The authors present theoretical considerations that occured in the case of structural elements under the infl uence of internal and external impacts, often with the support of computer programs. Moreover, another group of articles refers to their own research conducted on different elements in the laboratory. Solutions presented in the articles allow to obtain a range of information and knowledge on the behaviour of components and structural systems, and thus they have an important scientifi c and technical meaning. The achieved outcomes, resulting from a conducted research or theoretically relating to the area of scientifi c concern, are copyrighted. The information and solutions described in the articles can be used as a study aid not only to students of architecture and civil engineering, but also for civil engineers involved in the design and construction of buildings and specialists in the area of engineering science.