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Dynamic Behavior of Deck Slabs of Concrete Road Bridges |
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| Authors: | Claude Broquet Simon F. Bailey Mario Fafard Eugen Brühwiler |
| Affiliation: | 1PhD, Structural Engineer, DIC SA, Dauner Ing. Conseil, CH-1860 Aigle, Switzerland; formerly, School of Architecture, Civil and Environmental Engineering, Swiss Federal Institute of Technology EPFL, CH-1015 Lausanne, Switzerland. 2PhD, Structural Engineer, Andrews Associates, Croydon, U.K.; formerly, School of Architecture, Civil and Environmental Engineering, Swiss Federal Institute of Technology EPFL, CH-1015 Lausanne, Switzerland. 3Professor, GIREF and Dept. of Civil Engineering, Laval Univ., Quebec City PQ, Canada G1K 7P4. 4Professor, School of Architecture, Civil and Environmental Engineering, Swiss Federal Institute of Technology EPFL, CH-1015 Lausanne, Switzerland. |
| Abstract: | This paper treats the dynamic effect of traffic actions on the deck slabs of concrete road bridges using the finite-element method. All the important parameters that influence bridge-vehicle interaction are studied with a systematic approach. An advanced numerical model is described and the results of a parametric study are presented. The results suggest that vehicle speed is less important than vehicle mass and that road roughness is the most important parameter affecting the dynamic behavior of deck slabs. The type of bridge cross section was not found to have a significant influence on deck slab behavior. The dynamic amplification factor varied between 1.0 and 1.55 for the bridges and vehicles studied. These results should be validated by further work. |
| Keywords: | Bridge design Concrete slabs Finite elements Surface roughness Vehicles Amplification |