Research Of Steel Bridge Deck Pavement Technology In Cold Regions

In this paper, Ying kou Liaohe Bridge Coastal Highway, relying for the project, carried out a large span cable-stayed bridge seasonal frozen regions of the steel bridge deck pavement performance and reasonable structure and system research. Through domestic and international long-span steel bridge deck pavement engineering research and analysis of the causes of common diseases pavement, cold regions of large-span steel bridge deck pavement program technical characteristics and performance of different combinations of structures were compared to determine the Liaohe using ERS steel bridge deck pavement technology.ERS technology takes advantage of modified epoxy resin high temperature, high strength and can follow the deformation of the advantages of steel to form a smooth layer of waterproof anti-corrosion anti-slide layer EBCL, bound pavement does not produce the level of sliding displacement, re-use of cold asphalt concrete mix epoxy resin technology, EBCL level forming a layer of cold to do the construction of small porosity and high strength and resistance to damage the resin temperature of asphalt concrete (RA05) as a whole layer, layer of protection against SMA EBCL construction damage, the effective distributed wheel load and enhance the overall effect of the water. High viscosity of the compound through the production of high-performance SMA asphalt mixture layer functions as a vehicle for the bridge deck to provide traffic safety and excellent comfort.Liaohe River Bridge project for environmental and mechanical characteristics of the pavement structure EBCL, RA05 and SMA10, and other key materials, a lot of indoor targeted tests. Test contains EBCL construction performance test, strength tests, deformation and aging performance test performance test; RA05 performance test of rubber and resin RA05 test the performance of asphalt concrete, which contains a low-temperature region for the development of new RA05 plastic material; the viscous surface layer SMA10 and SMA10 asphalt performance tests of high and low temperature asphalt, water stability and durability testing.According to Liao River Bridge pavement structure and material properties of the test, produced a full-scale steel box girder deck model, and accelerated loading tests carried out to study at different stages of loading, axle load size and other factors under the bridge surface pavement strength degradation and fatigue damage, and high temperature performance and resistance to water damage performance, while collecting the internal stress and strain of steel bridge response data, to determine the steel bridge deck pavement Liaohe program was provided. Finally, the Liaohe River Bridge construction phase of the construction process and evaluation criteria for the analysis of testing, ERS pavement construction is simple, does not require special construction equipment, and not long after the conservation work on the less demanding construction environment to meet the low-temperature conditions of the construction needs. Test results meet the design requirements and engineering standards to verify the ERS steel bridge deck pavement construction technology with good operability.In this paper, the structural characteristics of Liaohe River Bridge, the existing steel bridge mechanics research, based on the proposed pavement structure recommended by the ERS, the ERS system for pavement materials and structural performance optimization test analysis, the special use to meet the Liaohe River Bridge condition of the pavement structure and material specifications, and guide the physical implementation of the project to solve the cold region to implement long-span steel bridge deck facing the problems and improve the quality and the use of pavement life, and promote China's Northeast steel box girder bridge deck pavement in cold regions technical level, with very significant economic and social significance.