engleski

Development of arch structures in bridges

Possible future developments of long span arch bridges have been investigated taking into account the Croatian experience in design and construction of concrete and steel arches. Some notable arch bridges and their specifics for the design development are mentioned. The importance of the theoretical background and the influence of great builders are highlighted. The recent construction of some new Croatian arch bridges has been made possible by the development of new construction methods, the application of high strength concrete and better quality steels and by the introduction of innovative structural solutions. Numerical analyses of long span arch bridges made of different materials have been performed by utilizing appropriate theoretical and numerical models. New developments, covering span lengths exceeding span lengths built so far and including innovative arch bridge structures, have been proposed, based on the results of these numerical analyses. Relevant data on the newest Croatian concrete arch bridge, the Krka highway bridge with 204 m span, are also given.

Croatia; arch bridge; long span; Krka bridge; composite structure

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