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Wyszukujesz frazę "Zamiar, Zenon." wg kryterium: Autor

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    Wyświetlanie 1-12 z 12
    Tytuł:
    Przykłady szybkich technologii odbudowy infrastruktury transportowej w sytuacjach kryzysowych
    Autorzy:
    Zamiar, Zenon
    Surowiecki, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/504571.pdf
    Data publikacji:
    2005
    Wydawca:
    Międzynarodowa Wyższa Szkoła Logistyki i Transportu
    Tematy:
    technology rehabilitation of transport infrastructure
    crisis situations
    Opis:
    This article includes the discussion on chosen technologies of fast construction and re-construction of engeneering objects, damaged or totally destroyed as a result of natural disasters, catastrophes, hostilities, terrorist actions ect. Among examples of solutions there are light resistance construction from reinforced ground and other special solutions.
    Źródło:
    Logistics and Transport; 2005, 1, 1; 83-91
    1734-2015
    Pojawia się w:
    Logistics and Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on vertical displacements of an experimental section of a railway track with a spatial mat reinforcement
    Autorzy:
    Zamiar, Zenon
    Surowiecki, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/1961877.pdf
    Data publikacji:
    2021-12-30
    Wydawca:
    Międzynarodowa Wyższa Szkoła Logistyki i Transportu
    Tematy:
    three-dimensional mat
    ground reinforcement
    field tests
    Opis:
    The subject of the article are the layers strengthening the base of the railway track, used in special cases of modernization of the main lines on the Polish State Railways. The construction of a three-dimensional reinforcing mat, also known as a "mattress", is presented. The reinforcing "mattress" is a layer of stone aggregate pre-compressed in an openwork coating made of plastic mesh. The results of the research on vertical displacements of the experimental section established in the railway track with a spatial mat embedded in the substrate are discussed. Vertical displacements were obtained as a function of time in the track subjected to the operation process.
    Źródło:
    Logistics and Transport; 2021, 51-52, 3-4; 179-192
    1734-2015
    Pojawia się w:
    Logistics and Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrofusion tensometry applied to the research of engineering structures
    Autorzy:
    Zamiar, Zenon
    Surowiecki, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2056539.pdf
    Data publikacji:
    2022-06-07
    Wydawca:
    Międzynarodowa Wyższa Szkoła Logistyki i Transportu
    Tematy:
    reinforced soil
    retaining structure
    splinter wedge
    electrofusion strain gauge
    Opis:
    The subject of the article concerns the problem of estimating the location of a slip line in a massif with a vertical retaining wall made of reinforced soil, in which the limit state of active pressure was induced. The task is solved experimentally, on the basis of measured unit strains in the reinforcement inserts, with the use of electrofusion strain gauges. The inserts are located in horizontal layers. The slip curve is formed by the points where the maximum normal stresses occur in the reinforcement inserts. This curve cuts off the fragment wedge that is being sought from the plane of the retaining wall. The slip line divides the area of the massif into two zones: active (splinter wedge) and passive, in which the reinforcement inserts are anchored. The test stand is presented, the technique of measuring the deformation of the reinforcement and the method of estimating the location of the slip surface are discussed.
    Źródło:
    Logistics and Transport; 2022, 53-54, 1-2; 119-132
    1734-2015
    Pojawia się w:
    Logistics and Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Supports Used in Makeshift Reconstruction of Railway Bridges
    Autorzy:
    Zamiar, Zenon
    Surowiecki, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/6420321.pdf
    Data publikacji:
    2023
    Wydawca:
    Międzynarodowa Wyższa Szkoła Logistyki i Transportu
    Tematy:
    railway bridge
    bridge support
    makeshift reconstruction
    Opis:
    The topic of the article concerns supports (abutments and pillars) used in makeshift reconstruction of railway bridges. The causes determining difficulties in the construction of supports for makeshift bridges are listed. The following supports are discussed in terms of construction and assembly technology: wooden supports (from the so-called cages, piles, frame and frame-pile, flat and flat and frame as well as wooden splines), steel (pile, frame), as well as concrete and reinforced concrete. Attention was drawn to the necessity of making attempts to use the remaining supports, or fragments of permanent supports to the greatest possible extent.
    Źródło:
    Logistics and Transport; 2023, Vol. 57-58, No. 1-2; 55-76
    1734-2015
    Pojawia się w:
    Logistics and Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effectiveness of road embankment reinforcement in the light of model tests on a laboratory scale
    Autorzy:
    Zamiar, Zenon
    Surowiecki, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2137092.pdf
    Data publikacji:
    2022-10-29
    Wydawca:
    Międzynarodowa Wyższa Szkoła Logistyki i Transportu
    Tematy:
    road embankments
    reinforced soil
    efficiency
    model tests
    Opis:
    The subject of the article concerns road embankments made of reinforced soil. The results of the analysis of the effectiveness of the reinforcement of these structures as a function of selected variable factors concerning the soil medium and the parameters of reinforcement inserts are given. The efficiency analysis was carried out on the basis of measurements of the horizontal unit pressure made on a physical model of a soil massif with a vertical wall of reinforced soil. The large-scale model was constructed on a laboratory scale. The article ends with a summary containing conclusions of a cognitive and practical nature.
    Źródło:
    Logistics and Transport; 2022, 55-56, 3-4; 49-70
    1734-2015
    Pojawia się w:
    Logistics and Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Parameter of Cooperation of Composite Components in Views about Vertical Wall from Reinforced Soil
    Autorzy:
    Zamiar, Zenon
    Surowiecki, Andrzej
    Saska, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/503920.pdf
    Data publikacji:
    2019
    Wydawca:
    Międzynarodowa Wyższa Szkoła Logistyki i Transportu
    Tematy:
    reinforced soil
    reinforcement dimensioning
    cooperation indicator
    model research
    Opis:
    The publication considers reinforced soil in relation to the construction of retaining walls in communication construction. The basic elements determining the cooperation of reinforcement inserts with the ground centre are discussed, depending on the features characterizing the components of the composite. The method and selected results of tests performed on a massif model with a vertical wall made of non-cohesive ground have been presented. A calculation example is given concerning the internal dimensioning of the reinforcement of the considered massif model, assuming the work of inserts without slipping in the ground centre. The concept of reinforcement co-operation indicator with the ground centre was introduced and a dependence to calculate its value was developed. The values of co-operation indicators: general and partial, concerning individual measurement levels of the model have been presented appropriately.
    Źródło:
    Logistics and Transport; 2019, 44, 4; 77-84
    1734-2015
    Pojawia się w:
    Logistics and Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model Studies of Distortion Condition Resistance Wall from Gabionic Elements
    Autorzy:
    Zamiar, Zenon
    Surowiecki, Andrzej
    Saska, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/504409.pdf
    Data publikacji:
    2019
    Wydawca:
    Międzynarodowa Wyższa Szkoła Logistyki i Transportu
    Tematy:
    gabion retaining wall
    deformation state
    model tests
    Opis:
    Retaining walls have been classified and characterized as structures protecting road or railway embankments against landslides. Particular attention was focused on retaining structures classified as light [1-3, 5-12, 14-24], which include, among others, walls made of gabions. Physical models of the gabion retaining wall, prepared on a laboratory scale, test stand and how to perform spatial deformation tests are presented. The models differed in the number and dimensions of gabions. On the basis of measured horizontal deformations of embankment models with a gabion wall, which were subjected to vertical static pressure at the level of the embankment ceiling, the values of basic strength parameters were determined. In particular, the value calculated: horizontal pressure coefficient, shear strength and modulus of deformation. The variability of the values of these parameters was estimated as a function of variable factors related to the gabion wall configuration (determined by the number and dimensions of gabions) and the value of the external load test.
    Źródło:
    Logistics and Transport; 2019, 43, 3; 47-56
    1734-2015
    Pojawia się w:
    Logistics and Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ways of Eliminating the Road Effect in Transition Zones from the Railway Track to Bridge Structures
    Autorzy:
    Zamiar, Zenon
    Surowiecki, Andrzej
    Saska, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/503870.pdf
    Data publikacji:
    2019
    Wydawca:
    Międzynarodowa Wyższa Szkoła Logistyki i Transportu
    Tematy:
    railway track
    engineering facility
    transition zone
    reinforcing inserts
    Opis:
    Selected methods of constructing special inserts in the transition zones between the embankment of the railway track and the engineering object (bridge, viaduct, or culvert) were discussed. The purpose of mounting the designed inserts is to eliminate the so-called threshold effect, i.e. continuously creating a mild change in the stiffness of the ground under the track. In addition to the solutions presented in practice, attention was also paid to projects developed by the authors of this article. T
    Źródło:
    Logistics and Transport; 2019, 44, 4; 85-93
    1734-2015
    Pojawia się w:
    Logistics and Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Analysis of the Stability of the Communication Support Stabilized by Gabion Wall with Variable Configuration
    Autorzy:
    Zamiar, Zenon
    Surowiecki, Andrzej
    Saska, Piotr
    Balawejder, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/504194.pdf
    Data publikacji:
    2019
    Wydawca:
    Międzynarodowa Wyższa Szkoła Logistyki i Transportu
    Tematy:
    communication embankment
    gabion wall
    water damming
    stability
    Opis:
    The subject of the article concerns the stabilization of communication earthworks using the so-called lightweight retaining structures. The stability of the embankment with the embankment built with the gabion wall is analysed, assuming a uniformly distributed load on the crown and a case of unilateral water pressure in the event of a flood. Final results of stability calculations made with the Fellenius and Bishop method in the form of slip surface with the smallest value of the coefficient were presented. Then, assuming the case of damming up of flood water, discretization of the filtration area, velocity distribution and hydrodynamic grating and slip surfaces were developed. The variable parameter is the wall configuration.
    Źródło:
    Logistics and Transport; 2019, 42, 2; 109-116
    1734-2015
    Pojawia się w:
    Logistics and Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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