Stability Analysis of Long-span Deck-type CFST Arch Bridge

Abstract

With the application of the concrete-filled-steel tube (CFST) in civil engineering, which is a composition material, the overcrossing ability of arch bridge get advanced development. For long-span and small width-span ratio arch bridge, the unstability collapse is one of structure damage forms. This kind of damage happens abruptly without obvious premonitory symptom. Transverse stability of a deck-type CFST arch bridge in Gansu Province, with main span of 180 meters, width-span ratio of