Asymmetric constant-stress arch shape in tied-arch bridges

Abstract

This study focuses on the asymmetric, momentless, constant-stress form of the arch in tied-arch bridges. The most common asymmetric shape of arch bridges is caused by variations in the heights of the abutments that support them. In recent years, a number of arch bridges with asymmetrical arches have been constructed, creating distinctive and intriguing aesthetics. This article proposes a methodology for optimally designing an asymmetric arch. The use of inclined parallel hangers is demonstrated to facilitate the creation of a pleasing, moment-free, constant stress tied-arch shape. The method used to calculate the shape of a tied-arch under constant stress is verified by finite element analysis. The primary objective of this paper is to demonstrate that an asymmetrical shape can be a structurally viable option without incurring excessive additional costs.