A heavy -duty high -life highway structure and construction method

Abstract

A heavy-duty and long-life highway structure and construction method, comprising a roadbed, a base plate and an asphalt pavement layer; the base plate is a prefabricated part, which is fixed on the upper part of the roadbed; the asphalt pavement layer is laid on the upper part of the base plate; The lower side of the part is provided with a lower substrate crimping plate, and the upper side of the other end is provided with a substrate upper crimping plate; when the substrate is set on the roadbed, along the direction of the vehicle, the upper substrate crimping plate of the previous substrate is set on the The base plate of the latter base plate is crimped to the upper part of the plate, and several base plates are connected into a whole, which completely solves the alternating up and down dislocation of the expansion and contraction joints of the adjacent cement plates caused by the passage of the independent plate structure with the heavy-duty vehicle. Therefore, the problem of reflective cracks in the asphalt pavement layer is solved; the heavy-duty and long-life highway structure of the present invention has the advantages of simple structure, simple and convenient construction process, and short construction period, and greatly improves the bearing capacity and service life of the highway.

Description

technical field [0001] The invention relates to the technical field of highway construction, in particular to a heavy-duty and long-life highway structure and a construction method. Background technique [0002] At present, the structure of highway pavement is mainly divided into cement pavement and asphalt pavement. After the highway is built and used for a period of time, various diseases such as cracks, potholes, ruts, looseness, subsidence, and surface damage will appear one after another. Among them, the cement pavement is a rigid structure. The driving vibration impact is large, and the main reason for the heavy-duty disease is that in the process of road construction, due to improper initial maintenance, the early water loss and shrinkage of the concrete mixture and the carbonization shrinkage cause micro-cracks. It gradually develops under the impact, and finally there are transverse cracks, longitudinal cracks, oblique cracks, and plate corner cracks. The asphalt pa...

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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

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