Heavy-load long-service-life highway structure and construction method

Abstract

The invention discloses a heavy-load long-service-life highway structure and a construction method. The heavy-load long-service-life highway structure comprises a roadbed, a base plate and an asphaltpavement layer, wherein the substrate is a prefabricated part and is fixedly arranged at the upper part of the roadbed; the asphalt pavement layer is laid on the substrate; the substrate is plate-shaped, the lower side of the end part of one side of the substrate is provided with a substrate lower crimping plate, and the upper side of the end part of the other side of the substrate is provided with a substrate upper crimping plate; when the substrate is arranged on a roadbed, the base plate upper crimping plate of the previous substrate is arranged at the upper part of the base plate lower crimping plate of the next substrate along the driving direction of a vehicle, so that a plurality of substrates are connected into a whole, and the problem when the heavy-load vehicle passes, the expansion and shrinkage joints of the adjacent cement plates are alternately staggered up and down is solved, so that the problem that reflective cracks are generated on the asphalt pavement layer is solved; the heavy-load long-service-life highway structure has the advantages of being simple in structure, simple and convenient in construction process and short in construction period, the bearing capacity of a highway is greatly improved, and the service life of the highway is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of highway construction, in particular to a heavy-duty high-life highway structure and a construction method. Background technique [0002] At present, the pavement structure of highways is mainly divided into cement pavement and asphalt pavement. After a period of time of construction and use, various diseases such as cracks, potholes, ruts, looseness, subsidence, and surface damage will appear one after another. The cement pavement is a rigid structure. Its driving vibration and impact are large, and the main cause of heavy-duty damage is that during the road construction process, the early excessive water loss and shrinkage of the concrete mixture due to improper initial maintenance and carbonation shrinkage cause micro-cracks. It gradually develops under the impact, and finally appears through transverse cracks, longitudinal cracks, oblique cracks, and slab corner cracks; the asphalt pavement is an elast...

AI Technical Summary

Problems solved by technology

[0007] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions: a heavy-duty high-life road structure, including a roadbed, a substrate, and an asphalt pavement layer; the substrate is fixedly arranged on the upper part of the roadbed; the asphalt pavement layer is laid on the upper part of the substrate The base plate is a cement prefabricated part with a steel cage inside, which is a rigid structure. After being arranged on the elastic roadbed, it provides a rigid support foundation for the top layer of asphalt pavement layer, which solves the problem of insufficient rigidity of the roadbed of traditional asphalt pavement in the past , even when the traffic flow is too large or seriously overloaded, the permanent deformation of the asphalt pavement layer will not occur due to the tensile stress exceeding its bearing strength, thereby preventing the structural damage of the asphalt pavement layer, so it has the characteristics of heavy load and long life

Images