Network tied-arch bridges, pioneered by Per Tveit in the 1960s, have gained popularity in recent decades as an alternative to girder, truss, and cable-stayed bridges. Despite their structural benefits, their adoption remains limited, presumably due to the particularities of conceptual design. This paper systematically presents key design decisions in network tied-arch bridges, including material selection – comparing conventional and innovative materials – arch geometry, hanger patterns and densities, and lateral bracing and deck configurations. The influence of hanger tuning on global behaviour is also considered. The aforementioned design features are studied through parametric optimisation studies using an existing bridge to validate the findings and recommendations. By clarifying these aspects, this study aims to support designers and contractors in confidently applying network tied-arch solutions and adapt them to project-specific requirements.
Klonaris et al. (Wed,) studied this question.
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