Analysis of dynamic stiffness of arch bridges by means of the first natural frequency
Materiały konferencyjne
MNiSW
15
WOS
| Status: | |
| Autorzy: | Karaś Sławomir, Wrobel Radosław |
| Dyscypliny: | |
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| Rok wydania: | 2017 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 15 |
| Strony: | 1 - 6 |
| Web of Science® Times Cited: | 1 |
| Bazy: | Web of Science | Google Scholar | EBSCO |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | TAK |
| Nazwa konferencji: | 2nd International Conference of Computational Methods in Engineering Science |
| Skrócona nazwa konferencji: | CMES’17 |
| URL serii konferencji: | LINK |
| Termin konferencji: | 23 listopada 2017 do 25 listopada 2017 |
| Miasto konferencji: | Lublin |
| Państwo konferencji: | POLSKA |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Otwarte czasopismo |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 15 grudnia 2017 |
| Abstrakty: | angielski |
| Arch bridges have always boasted a strong aesthetic value. However, their design is challenging due to dynamic excitations. It regards, above all, an area up to ¼ of a bridge length. In bridge dynamics numerical analyses, the basic importance is attached to the natural vibration frequency corresponding to the first bending mode. The multiple first mode is connected to the horizontal shift of a platform or arches, additionally coupled with the deformation corresponding to torsion. In the bridge standards, the first bending mode was adopted as default followed subsequently by higher rank modes of torsional or transversal shapes which do not always occur. This paper describes fourteen numerical models of various arches used in bridge design. The arch bridge, of vertical arches, constitutes a reference. Other models are their varieties through a change of the arch height, a method of connecting platforms and arches at a head and their resulting interaction. Furthermore, variability of arch tilts from a vertical plane was discussed. Conclusions are not unanimously final from the technical point of view; nevertheless, certain beneficial solutions, corresponding to the models of structures of higher natural frequencies, can be indicated. |
