Study On The Waterproof Binding Layer Of Long Span Orthogonal Intersection Steel Bridge Deck

Deck overlay of long span steel bridge has become a worldwide tough technique problem, in particular, early stage fatigue failure and traction slippage, which owing to the insufficiency bond of the waterproof binding layer. Although our country done numerous studies and some success has been obtained in deck overlay of long span bridge in recent years , there are still have no correlative criteria, especially the theoretical investigation of the waterproof binging layer relatively fall behind. At the same time, different textural association has great impaction on shear resistant intensity of the binding layer and the fatigue life. For the moment, the research of this relatively less. So, select the binding material which suit the traffic conditions and climate conditions is crucial important.First, investigate and analyses the damage of the home and abroad deck overlay of long span bridge. Incorporate the destruction form and cause of the bituminous concrete deck overlay of long span bridge.Secondly, introduce the research and application of the primary bridge binding material,aim at the performance requirement,destruction characteristic and engineering present use status of the waterproof binding layer, select the epoxy asphalt cohesive material which from different contray. proceed the quality test of the raw and processed binding material, and the shearing tset, which simulate the deck overlay resist horizontal force at the period of service and the pull-out test which simulate the deck overlay resist vertical direction force at the period of service. Compare the shear resistant and tensile pull of the binding material at different environmental conditions. Screen out superior performance,economic feasibility binding material for different region,different textural associationAt last, proceed some research on the construction technology of the binding material, offer the better insure for advancing the construction quality and ensuring the life of the deck overlay of long span steel bridge.