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    Wyświetlanie 1-5 z 5
    Tytuł:
    Measuring system for monitoring of concrete dam deformations
    Autorzy:
    Bryś, H.
    Mirek, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/224422.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    zapora
    zapora betonowa
    deformacja zapory
    pomiary geodezyjne
    dam
    concrete dam
    concrete dam deformation
    engineering surveying
    Źródło:
    Reports on Geodesy; 2007, z. 1/82; 39-45
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of possibilities to use fern modelling in the process of modernisation of control networks for concrete dams
    Autorzy:
    Zaczek-Peplinska, J.
    Popielski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/225021.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    zapora
    zapora betonowa
    metoda elementów skończonych
    FEM
    pomiary geodezyjne
    dam
    concrete dam
    finite elements method
    engineering surveying
    Opis:
    The paper presents analysis of possibilities to utilise results of modelling the work of concrete dam construction elements, obtained by means of the finite elements method (FEM), for the needs of modernisation of a control network. Such analysis should answer the question, whether - basing on the results of modelling with the use of currently controlled points of the object, as the network nodes, and pointing to zones (locations) of threats - it will be possible to formulate recommendations concerning the improvement of a set of controlled points and to perform related modifications of the existing control network.
    Źródło:
    Reports on Geodesy; 2007, z. 1/82; 417-423
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of the influence of temperature and water level of the reservoir about the displacement of a concrete dam
    Autorzy:
    Oro, S. R.
    Mafioleti, T. R.
    Chaves Neto, A.
    Garcia, S. R. P.
    Neumann, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/264428.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    zapora betonowa
    analiza wieloczynnikowa
    monitorowanie strukturalne
    structural monitoring
    concrete dam
    multivariate analysis
    Opis:
    Multivariate techniques are used in this study to analyze the monitoring data displacements of a concrete dam, measured by means of pendulums, extensometer bases and multiple rod extensometers, taking into account the action of environmental conditions, bounded by the surface temperature of the concrete at ambient temperature and the tank water level. The canonical correlation analysis is used to evaluate the influence of environmental variables in the displacement of structures and dam foundations. The factor analysis is used to identify data sources of variability and order the sensors according to the action of factors. The dates of the measurements are grouped according to similarities in the present observations, by applying the cluster analysis. Then the discriminant analysis is used to assess the groups as to their homogeneity. The results demonstrate that the techniques used for distinguishing the dam responses and identify the effects of changes in environmental conditions on the displacements of the structures and dam foundations.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 1; 107-120
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reliability assessment and sensitivity analysis of concrete gravity dams by considering uncertainty in reservoir water levels and dam body materials
    Autorzy:
    Pouraminian, Majid
    Pourbakhshian, Somayyeh
    Noroozinejad Farsangi, Ehsan
    Powiązania:
    https://bibliotekanauki.pl/articles/396079.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    concrete dam
    sensitivity analysis
    hydrostatic pressure
    epistemic uncertainty
    failure risk
    zapora betonowa
    analiza wrażliwości
    ciśnienie hydrostatyczne
    ryzyko awarii
    Opis:
    An elaborate safety assessment of the Pine Flat (PF) concrete gravity dam (CGD) has been conducted in this paper. Structural analysis was performed by taking into account the uncertainties in the physical and mechanical properties of the dam body materials and the reservoir water level. The coefficient of variation of 5 and 10 percent and the Gaussian distribution (GAUS) are assigned to random variables (RVs). Sensitivity analysis (SA) of the RVs is done, and important parameters introduced. SA is done to identify the most influential RVs on the structural response. Also, the modulus of elasticity of concrete is the most effective parameter in response to horizontal deformation of the dam crest. The concrete density and US hydrostatic pressure height are the most effective parameters, and the Poisson's ratio is the insignificant parameter on the dam response. To be confident in the safety of the dam body under usual loading, including the dam weight and the upstream (US) hydrostatic pressure, the reliability index (RI) has been obtained by Monte Carlo simulation. The RI for the coefficients of variation of 5 and 10 percent were obtained at 4.38 and 2.47, respectively. If the dispersion of RVs is high, then the dam will be at risk of failure.
    Źródło:
    Civil and Environmental Engineering Reports; 2020, 30, 1; 1-17
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Telematics in the technical condition monitoring of concrete dams structures using wireless sensor networks
    Autorzy:
    Keosysano, S.
    Szpytko, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/393844.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Stowarzyszenie Telematyki Transportu
    Tematy:
    wireless sensor network
    telematics
    concrete dam
    structural health monitoring
    decision making
    bezprzewodowa sieć czujników
    telematyka
    zapora betonowa
    monitorowanie stanu konstrukcji
    podejmowanie decyzji
    Opis:
    The safety of concrete dams, such as gravity dams, buttress dams, and arch dams, is directly related to not only its social and economic benefits, but also the personal and property safety of residents around the reservoir area. Therefore, it is of great importance to monitor the health of concrete dams using the obtained real-time information. In this paper, reviewed using an automatic wireless sensor monitoring system for temperature and humidity monitoring within concrete structures and A Real-Time Temperature Data Transmission Approach for Intelligent Cooling Control of Mass Concrete by using temperature sensors in arch dam. Structural Health Monitoring (SHM) aims to develop automated systems for the continuous monitoring, inspection, and damage detection of structures with minimum labour involvement.
    Źródło:
    Archives of Transport System Telematics; 2019, 12, 1; 22-28
    1899-8208
    Pojawia się w:
    Archives of Transport System Telematics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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