Temat: box girder - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Porównanie dwóch największych mostów podwieszonych zbudowanych w Europie w latach 2008-2011
Comparison of two largest cable-stayed bridges built in Europe in 2008-2011
Autorzy:: Biliszczuk, J.
Szymczyk, O.
Powiązania:: https://bibliotekanauki.pl/articles/145112.pdf
Data publikacji:: 2012
Wydawca:: Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:: most podwieszony
montaż wspornikowy
nasuwanie podłużne
koszty budowy
cable-stayed bridge
cantilever erection
incremental launching
steel box girder
prestressed concrete box girder
erection costs
Opis:: W ostatnich latach w Europie zbudowano dwa mosty podwieszone o dużej rozpiętości przęseł: most Rędziński w ciągu Autostradowej Obwodnicy Wrocławia i most przez Sawę w Belgradzie. Są to obiekty o podobnej konstrukcji i skali trudności realizacyjnych. Dokonano porównania podstawowych parametrów geometrycznych tych mostów oraz czasu i kosztów ich realizacji.
In recent years in Europe two large cable-stayed bridges were built: Rędziński Bridge along Highway Ring Road of Wrocław and Sava Bridge within Inner City Semi Ring Road in Belgrade.Comparison of their geometrical parameters and description of construction technologies of both structures were presented. Costs and periods of erecting the bridges were also compared.
Źródło:: Drogownictwo; 2012, 3; 82-88
0012-6357
Pojawia się w:: Drogownictwo
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Wieloprzęsłowe wiadukty zintegrowane z przęsłami skrzynkowymi - doświadczenia projektanta
Multi-span integral viaducts with box girders - the designer experience
Autorzy:: Helowicz, A.
Powiązania:: https://bibliotekanauki.pl/articles/40103.pdf
Data publikacji:: 2017
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:: projektowanie
budowa
wiadukty wieloprzeslowe zintegrowane
przesla skrzynkowe
design
construction
multi-span integral viaduct
box girder
Źródło:: Acta Scientiarum Polonorum. Architectura; 2017, 16, 3
1644-0633
Pojawia się w:: Acta Scientiarum Polonorum. Architectura
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Free vibration behaviour of thin-walled concrete box-girder bridge using Perspex sheet experimental model
Autorzy:: Verma, V.
Nallasivam, K.
Powiązania:: https://bibliotekanauki.pl/articles/1818786.pdf
Data publikacji:: 2021
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: concrete box-girder bridge
perspex sheet model
modal analysis
finite element method
Matlab
most betonowy
most dźwigarowy
analiza modalna
metoda elementów skończonych
Opis:: Purpose: Curved box-girder bridges offers an excellent solution to the problems associated with traffic congestion. However, owing to their complex geometry, they are subjected to shear lag, torsional warping and cross-sectional distortion, which must be assessed in their study and design. Furthermore, the dynamic behaviour of curved bridges adds to the complexity of the issue, emphasizing the importance of studying free vibration. The purpose of this study is to numerically model the concrete curved box-girder bridge considering torsional warping, distortion and distortional warping effects and to identify key parameters that influence the free vibration response of the box-girder bridge by validating it with experimental and analytical studies. Design/methodology/approach: The concrete bridge is numerically modelled by means of computationally effective thin-walled box-beam finite elements that consider torsional warping, distortion and distortional warping, which are prominent features of thinwalled box-girders. The free vibration analysis of the concrete curved box-girder bridge is performed by developing a finite element based MATLAB program. Findings: The identification of critical parameters that influence the free vibration behaviour of curved thin-walled concrete box-girder bridges is one of the main findings of the study. Each parameter and its effect has been extensively discussed. Research limitations/implications: The study limits for the preliminary design phase of thin-walled box-girder bridge decks, where a complete three-dimensional finite element analysis is unnecessary. The current approach can be extended to future research using a different method, such as finite element grilling technique on multi-span curved bridges having unequal span. Originality/value: The current research implements a finite element formulation in combination with thin-walled beam theory, where an extensive parametric study is conducted on the free vibration behaviour of a concrete thin-walled box-girder bridge, while also accounting for their complex structural actions. The validity of the given numerical formulation is demonstrated by a comparison of the natural frequencies found experimentally. The study carried out will be of great importance for engineers to help them anticipate the modal characteristics of a curved concrete thin-walled girder bridge, which will further be useful for evaluating their dynamic response analysis.
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2021, 106, 2; 56--76
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Static response of curved steel thin-walled box-girder bridge subjected to Indian railway loading
Autorzy:: Verma, V.
Nallasivam, K.
Powiązania:: https://bibliotekanauki.pl/articles/2055742.pdf
Data publikacji:: 2021
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: steel box-girder bridge
thin-walled structures
finite element technique
Matlab
torsional bi-moment
skrzynkowy dźwigar stalowy
most dźwigarowy
konstrukcje cienkościenne
technika elementów skończonych
bimoment
skręcanie
Opis:: Purpose: The primary objective of the current study is to numerically model the steel thin-walled curved box-girder bridge and to examine its various response parameters subjected to Indian Railway loading. Design/methodology/approach: The analysis is conducted by adopting a one dimensional curved thin-walled box-beam finite beam element based on finite element methodology. The scope of the work includes a computationally efficient, three-noded, one-dimensional representation of a thin-walled box-girder bridge, which is especially desirable for its preliminary analysis and design phase, as well as a study of the static characteristics of a steel curved bridge, which is critical for interpreting its dynamic response. Findings: The analytical results computed using finite element based MATLAB coding are presented in the form of various stress resultants under the effect of various combinations of Indian Railway loads. Additionally, the variation in different response parameters due to changes in radius and span length has also been investigated. Research limitations/implications: The research is restricted to the initial design and analysis phase of box-girder bridge, where the wall thickness is small as compared to the cross-section dimensions. The current approach can be extended to future research using a different method, such as Extended finite element technique on curved bridges by varying boundary conditions and number of elements. Originality/value: The validation of the adopted finite element approach is done by solving a numerical problem, which is in excellent agreement with the previous research findings. Also, previous studies had aimed at thin-walled box girders that had been exposed to point loading, uniformly distributed loading, or highway truck loading, but no research had been done on railway loading. Moreover, no previous research had performed the static analysis on thin-walled box-girders with six different response parameters, as the current study has. Engineers will benefit greatly from the research as it will help them predict the static behaviour of the curved thin-walled girder bridge, as well as assess their free vibration and dynamic response analysis.
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2021, 108, 2; 63--74
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Numerical and theoretical research on spatial shear lag effect of self-anchored suspension bridge steel box girder
Autorzy:: Li, Yanfeng
He, Ying
Bao, Longsheng
Sun, Baoyun
Wang, Qinghe
Powiązania:: https://bibliotekanauki.pl/articles/1852505.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: most samozakotwiony
most wiszący
dźwigar skrzynkowy
dźwigar stalowy
efekt opóźnienia ścinania
analiza elementów skończonych
self-anchored bridge
suspension bridge
steel box girder
shear lag effect
finite element analysis
Opis:: The shear lag effect of the steel box girder section in a self-anchored suspension bridge was investigated in this study. Finite element analysis software Midas Civil was used to discretize the girder under analysis into space plate elements and establish a plate element model. The law of shear lag in the longitudinal direction of the girder in the construction and completion stages was determined accordingly. The shear lag coefficient appears to change suddenly near the side support, middle support, side cable anchorage area, and near the bridge tower support of the steel box girder under the imposed load. The most severe shear lag effect is located near the side support and near the side cable anchorage area. Steel box girder sections are simulated before and after system conversion to analyze the shear lag coefficient in the bridge construction stage. The results show that the shear lag coefficient markedly differs before versus after system conversion due to the different stress mechanisms. The finite element analysis results were validated by comparison with the results of an analysis via analogous rod method.
Źródło:: Archives of Civil Engineering; 2021, 67, 2; 631-651
1230-2945
Pojawia się w:: Archives of Civil Engineering
Dostawca treści:: Biblioteka Nauki

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