Research on the structural behavior of special-shaped arch bridges

Abstract

With the social progress and the rapid development of people's economic level, people pay more and more attention to the external image of bridges, which greatly promotes the emergence and development of special-shaped arch bridges. But because of the particularity of the special-shaped arch bridge structure, its plane stress characteristics, which are different from the traditional arch bridge, become more complex. In this paper, three types of arch bridges commonly seen in special-shaped arch bridges: leaning type, inclined span type and butterfly type arch bridges are selected for a brief structural stress analysis. The results show that most of the arch structures of special-shaped arch bridges only play an auxiliary role in bearing loads, and due to the more complex stress, the finite element analysis software needs to be used to optimize the structure for many times to reach a relatively reasonable range. In addition, some arch structures are used more for aesthetic purposes than to bear loads, and their mechanical performance is basically zero.