Prestressed Hollow Slab Bridge Pavement Mechanical Characteristics Analysis Of Influencing Factors

The highway and all kinds of different levels of the road in today’s society to occupy a more and more important role.At present, the highway construction of our country is in a high-speed development period, but also led to the construction of the bridge.In bridge construction, pavement structure as the bridge deck protection layer, not only can ensure the bridge deck to avoid the rain erosion, but also to protect it from the vehicle directly wear and dispersion of vehicle load. Therefore, as an important part of bridge structure, the bridge deck pavement can not be simply treated as a subsidiary structure,.Design and construction personnel should given it enough attention. With the increasing of the volume of China’s road traffic, bridge deck pavement layer structural damage caused by the bridge durability of the overall decline,hollow slab bridge pavement damage is particularly serious.Prestressed simply supported hollow slab bridge is small bridges commonly used a kind of structure form.In China Road and bridge,it is one of the most widely used bridge.This paper through the finite element software ANSYS to establish prestressed hollow slab bridge deck pavement finite element model. First, this paper studies the interlaminar continuous state under vehicle load is applied and changes the concrete cushion thickness of prestressed hollow plate girder bridge deck pavement should be the influence law of the force,calculate as along with the increase of the thickness of concrete cushion,the maximum tensile stress of pavement decreases rapidly and gradually increase and other stress decreases.Secondly, the influence of the modulus, material parameters and bond strength of the waterproof adhesive layer on the internal force of the bridge deck pavement is studied under the condition of not completely continuous. Finally, analysis of bridge deck pavement layer under overloading and horizontal braking force conditions, different overload ratios and different tire attachment coefficient of pavement layer stress influence,.The analysis shows that the overload and adhesion coefficient increases will make the pavement layer internal stress is increased.