ABSTRACT
ABSTRACT: Bowstring arch bridges defines a structural system where the compression force in the bow is balanced by the axial tensile force in the tie, which is also called stiffening girder. They are based on a Swedish concept implemented for efficient bridges in terms of steel consumption for spans until 120 m, aesthetics and the advantage of low construction height. The optimization of this type of structures was discussed since 1940, the subject being treated at IABSE Congress Association Internationale des Ponts et Charpentes. This structural system is used for almost a century, allowing a variety of shapes, which is expressed both in bow geometry, in structural system chosen for tie and in technology (hangers, anchors) and erection systems. The variety of architecture inevitably led to different hangers disposal based on aesthetic or design, disposal which has a significant effect on the consumption of steel and structural response, which is treated in this paper.
