2004 Volume 11 Issue 42 Pages 89-100
This paper presents results of a parametric analysis carried out on the mechanical characteristics and load carrying capacity of Nielsen-Lohse bridges subjected to lateral loads (wind loads). First of all, trial design is conducted for various practical bridge models subjected to lateral loads according to the Japanese Specifications for Highway Bridges (JSHB) in order to investigate the mechanical characteristics and load carrying capacity of these models. Second, the exact load carrying capacity of these models under lateral loads is numerically calculated through elasto-plastic and finite displacement analyses using a FEM program named EPASS. Finally, a rational and economical design method for the arch ribs of Nielsen-Lohse bridges is proposed based on the parametric analysis.