Structure and Performance Characteristics of Curved Box Girders with Corrugated Steel Webs

Many advantages of curved box girders with corrugated steel webs (CSWs) are given in this paper, they have a lot of advantages such as light weight, high efficiency, engineering economics, assembly construction and aesthetic appearance. This type of structure combines steel and concrete materi- als properly, which improves the structural strength, stability and utilization efficiency of materials, and can effectively resist earthquakes, and realize assembly. The unique structural features of CSWs in curved box girders are pointed out, that is, the difference between the inside and outside folded angles. Based on cosine theorem and sum of angles, formulas of two different angles are proposed. Moreover, mechanics characteristics are given, which include three types of shear buckling modes, section distortion and longitudinal warping. Thus, the design of CSWs dimensions can be carried out through the buckling of CSWs in curved box girders, and the arrangement of intermediate dia- phragms of curved box girders with CSWs should be considered. Additionally, the transverse char- acteristics regularities of curved box girders with CSWs under different cases and different radius of curvature are obtained, respectively. Among them, two kinds of cases are the most unfavorable.