Fatigue Performances of Steel Box Girder in Orthotropic Steel Bridge Deck with Corrosive Environment

摘要

According to available results of the engineering investigation, the fatigue cracks are inevitably existed in steel bridges because of the environmental pollution, overloading vehicles and larger numbers of automobiles. The static and fatigue tests of the orthotropic steel bridge deck models were carried out in this research with the fatigue damage developing laws. An experiment design of corrosive and fatigue property of steel box girder with the specific environment controlling equipment is herein taken into account. Through the data from the testing design, the important characteristic width and length of the fatigue crack can be achieved, which can be used for the grasping of the mechanism of the steel box girder in the future.