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Wyszukujesz frazę "bridge test" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Arch bridges under test loadings
Autorzy:
Chróścielewski, J.
Malinowski, M.
Miśkiewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/243342.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
bridge
FEM
test loads
numerical modelling
arch bridges
Opis:
According to the Polish bridge design code road bridges with spans over 20 m and all railway bridges, before they are given to public usage, all require the conduction of studies during a test loading. This paper is an illustration to the experience in arch bridge test loadings of the research team of Department of Structural Mechanics and Bridge Structures from the Gdansk University of Technology. It concerns the applied computational conceptions and researches on an example of three arch bridges, built between 2005 and 2007. The presented calculations results consists the analysis of spatial construction schemes made using the finite elements method (FEM) and its comparison to the field studies. The goal of the studies is to check the correctness of the construction 's work and of the design assumptions. Arch bridges with the longest spans, visualisation of the computational model, the displacement - deflection graphs of the arch bridge construction, generating the extreme span 's deflections, results of the calculations and field dynamic measurements of the some bridges, example of computation results and field dynamic measurements during the static tests are presented in the paper.
Źródło:
Journal of KONES; 2008, 15, 1; 29-38
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical study of dynamic response of reinforced concrete bridge induced by selected heavy vehicle
Autorzy:
Szurgott, P.
Smolarz, M.
Powiązania:
https://bibliotekanauki.pl/articles/244088.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
dynamic test
bridge
vehicle
finite element method
LS-DYNA
Opis:
The main aim of this study is to carry out dynamic simulations of structural response of reinforced concrete bridge loaded with a moving heavy vehicle. Computational dynamics analysis was conducted using LS-DYNA computer code. The selected bridge was a reinforced-concrete structure located on the U.S. 90 in Northwest Florida. The bridge has six prestressed AASHTO type III beams and concrete deck. An 8-axle vehicle including a tractor unit and a low bed trailer were selected as a representative for the study. FE model of the tractor based on previous studies; however, a FE model of the trailer was developed for the present work. Analyses included passages of a vehicle with 47 tonnes cargo. A cargo resting on a trailer was taken into account by changing the material density of selected components in the semi-trailer FE model. Time histories of the bridge deflections in the middle of the span were recorded during the simulation tests. Simulations were performed for the vehicle velocity between 20 and 50 mph, stepped by 5 mph. An influence of the velocity on the bridge deflection was determined. The main objective of the simulation tests on the selected bridge was to assess the actual dynamic load allowance (DLA), also known as impact factor, based on the maximum deflection of the bridge span as a function of the vehicle velocity.
Źródło:
Journal of KONES; 2016, 23, 4; 505-512
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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