Bridging structures are civil engineering facilities that represent one of the key elements of the road infrastructure. They are often considered as the most expensive, the most important and the most delicate parts of the roads, which is why they should be given particular attention not only during the design and construction stages but also during the use-phase. During their lifetime, bridges are exposed to negative impacts, such as excessive loads, unfavourable climatic conditions, careless construction and poor maintenance. However, requirements related to their load capacity, sustainability and safety increase regularly with time. In order to ensure that the facility serves its purpose in a safe and sustainable way, it needs to be maintained on a regular basis. The thesis introduces two renovation solutions of the bridge over the river Sava in the village of Podnart. Through regular and detailed monitoring of the facility, damages were identified that required a rapid renovation in the form of construction reinforcement. It needed to be chosen between the reinforcements through bonding carbon lamellas or concreting two additional reinforced concrete beams under the deck construction. Both solutions have been compared in terms of technology and costs. With the help of multiple-criteria decision-making through analytic hierarchy process method, the better of the both solutions has been chosen in the light of costs, sustainability of the bridge, renovation time and aesthetic value. In order to fulfil the requirements of both the operator and the user, the selected measures always need to be acceptable in terms of costs as well as time.
|
