Static and Dynamic Analysis of A through Tied Arch Bridge

Abstract

Arch bridge is a widely used type of bridge. Its static characteristics and dynamic characteristics have attracted wide attention, so it is necessary to analyze its static and dynamic characteristics. In this paper, a finite element model of a through tied arch bridge was set up to analyze its static and dynamic characteristics under both dead weight and secondary dead load. By static analysis, the maximum deformation of the structure is located at the center of the span. The arch rib, as the main load-bearing component of the arch bridge, mainly bears axial pressure, and the maximum value occurs near the arch foot, while the tied beam bears axial tension. B For arch rib and tied beams, they are also subjected to bending moment and shear force, and the maximum bending moment occur at the place of the middle point of the span and shear force near the arch foot. The first ten natural frequencies and modes of the structure were obtained by dynamic analysis, and the in-plane stiffness of the structure is larger than that of out-of-plane stiffness.