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    Wyświetlanie 1-3 z 3
    Tytuł:
    Modern concrete pipes: a review of reinforcement and new technologies
    Autorzy:
    Abel, Tomasz
    Pelczar, Natalia
    Powiązania:
    https://bibliotekanauki.pl/articles/2037701.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    concrete pipe
    underground structure
    fibre
    reinforcement
    Opis:
    The paper discusses existing reinforcement, future reinforcement and new technologies for concrete pipes used in the sewage systems. Concrete pipes currently in use and under investigation are reviewed. Structural fibres, as the main reinforcement of concrete pipes, are known as an attractive alternative to the traditional steel bars. Steel, synthetic and basalt fibres have been considered. The latest research and mechanical properties of individual fibres are presented. Advances in fibre-reinforced concrete provide a new basis for the design of more efficient concrete pipes, especially those resistant to biological corrosion and with a longer service life. In the article, future non-corrosive reinforcement due to the reduction of steel reinforcement and corrosion protection linings has been proposed.
    Źródło:
    Studia Geotechnica et Mechanica; 2021, 43, s1; 548-557
    0137-6365
    2083-831X
    Pojawia się w:
    Studia Geotechnica et Mechanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The loadings due to traffic considered in design of trenchless rehabilitation of sewage pipes
    Obciążenia użytkowe od taboru samochodowego w projektowaniu bezwykopowej odnowy przewodów kanalizacyjnych
    Autorzy:
    Kuliczkowski, A.
    Kuliczkowska, E.
    Parka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/402244.pdf
    Data publikacji:
    2010
    Wydawca:
    Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
    Tematy:
    technologie bezwykopowe
    konstrukcje podziemne
    odnowa przewodów kanalizacyjnych
    trenchless technology
    underground constructions
    pipe rehabilitation
    Opis:
    New method "KA-17" used for making calculations of the values of road traffic loads and created by prof. Andrzej Kuliczkowski, is presented here. Proposed method considers the influence of different types of soil placed above existing sewers on the values of road traffic loads acting on sewers. Several curves created for different diameters, different types of soil and vehicles and expressed as a function of a height of soil column above the sewer are also given. Attached examples explain how the values of road traffic loads change depending on the above mentioned parameters. Besides a comparative analysis of two methods used for making calculations of the values of road traffic loads (according to Scandinavian and KA-17 methodology) is included in the paper. Thorough analysis of basic problems that the one can face during determining the values of a dynamic coefficient is also presented. Additionally the influence of a reducing coefficient expressed among the other things. As a function of different types of a road surface on final values of loadings acting on sewer is explained. Following the results of thorough researches above mentioned analyses are recommended as an especially useful for e.g. evaluation of a safety coefficient of sewer to be renovated or for calculations of optimum wall thickness of linings used for trenchless reconstruction of sewers as well as other pipes used for underground constructions.
    Źródło:
    Structure and Environment; 2010, 2, 2; 45-53
    2081-1500
    Pojawia się w:
    Structure and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Particle shape effect on macroscopic behaviour of underground structures: numerical and experimental study
    Autorzy:
    Szarf, K.
    Combe, G.
    Villard, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/178734.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    discrete element method
    particle shape
    underground pipe
    digital image correlation
    Opis:
    The mechanical performance of underground flexible structures such as buried pipes or culverts made of plastics depend not only on the properties of the structure, but also on the material surrounding it. Flexible drains can deflect by 30% with the joints staying tight, or even invert. Large deformations of the structure are difficult to model in the framework of Finite Element Method, but straightforward in Discrete Element Methods. Moreover, Discrete Element approach is able to provide information about the grain–grain and grain–structure interactions at the microscale. This paper presents numerical and experimental investigations of flexible buried pipe behaviour with focus placed on load transfer above the buried structure. Numerical modeling was able to reproduce the experimental results. Load repartition was observed, being affected by a number of factors such as particle shape, pipe friction and pipe stiffness.
    Źródło:
    Studia Geotechnica et Mechanica; 2014, 36, 3; 67-74
    0137-6365
    2083-831X
    Pojawia się w:
    Studia Geotechnica et Mechanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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