Finite-element (FE) modelling of bridge dynamics from exposure to moving load
| Autor: | G.M. Kadisov, V.V. Chernyshov |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Инженерно-строительный журнал, Vol 44, Iss 9, Pp 56-63 (2013) |
| Druh dokumentu: | article |
| ISSN: | 2071-4726 2071-0305 |
| DOI: | 10.5862/MCE.44.7 |
| Popis: | Solutions to the problem of cable-stayed bridge dynamics are received and analysed on the basis of two modelling options. According to the first one space-time finite-elements are used. The first three bridge vibration modes are shown to study cable-stayed bridge fluctuations when exposed to the vertical force moving at a constant speed and compile charts of time history strains in fixed sections of a deck. According to the second option a suspended superstructure is represented by a fold with absolutely rigid transverse membranes in joints of cables, a bridge tower is represented by a beam. Natural modes of the bridge are received by a solution of homogeneous system equations of the mixed method. Nodal lines of a fold for the first four natural modes are shown. The comparative description of applicability of the above-mentioned methods of solving problems of dynamics affected by moving load is given. |
| Databáze: | Directory of Open Access Journals |
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