| Abstract [eng] |
Recently has increased an interest in the dynamic behaviour of bridges due to the enlarged traffic loads. Dynamic loads have a great influence on the resulting damage in slabs of the reinforced concrete bridges. Their impact depends on the speed of the transport flow, bridge’s pavement roughness and other parameters. A dynamic deflection analysis of the reinforced concrete bridge over the river Šušvė was done in the master’s final project. There was used a mathematical model for the calculation of bridge dynamic deflection with the evaluation of the different speed of a vehicle and the uniform obstacle of the road surface. Mathematical models for the dynamic analysis were reviewed in the literature. There were also described methods that can indentify moving dynamic loads. In addition, the formulas of a dynamic factor by different bridge design codes were given. The calculation of forces was carried out by Russian and European design codes. The prestressed concrete beam of the slab bridge was designed and the drawing of this construction was prepared. The static and dynamic experiments were conducted for the research object – for the bridge over the river Šušvė. The experimental results were compared with the theoretical results. The conclusions are given at the end of the project. The project size: 145 pages, 119 pictures, 15 tables, 463 formulas, 44 literature sources, 1 drawing in A1 size. |
