Research On The Material And Structure Of The Long-span Bridge Deck Pavement Layer

The bridge deck pavement, as an important part of the bridge, has a direct impact on driving safety, comfort and durability of the bridge. Relying on the Weihe long-span Bridge of Xianyang Airport Highway, the paper studied on cement concrete bridge deck pavement. Adopting three dimensional finite-element method for mechanical analysis, the paper analysed pavement layer thickness and modulus of the law for the stress, a reasonable range of modulus and thickness. On this basis, study several pavement materials - fiber-reinforced asphalt concrete, full asphalt concrete and waterproof binder coat of the mechanical properties and pavement performance, optimization of asphalt gradation. Combination of bridge deck waterproofing binder coat performance requirements and the calculation of interlaminar shear stress results on the bridge deck waterproofing adhesive layer of the system and determine the type of bridge deck waterproofing adhesive layer and the most Best Caesar Paving; And by the Composite Beam Fatigue Test comparing pavement combination of layer structure fatigue life evaluation of the overall pavement structure fatigue life capacity, the bridge deck, structure, materials and a reasonable mix of waterproof binder coat are determined; the bridge deck treatment methods, Synchronous stone seal coat, fiber-reinforced asphalt pavement construction technology, and common issues during construction are studies in this paper.