Continuous reinforced concrete composite asphalt pavement expansion joint structure and construction method thereof

Abstract

The invention discloses a continuous reinforced concrete composite asphalt pavement expansion joint structure and a construction method thereof, and relates to the field of pavement structures. The continuous reinforced concrete composite asphalt pavement expansion joint structure comprises an asphalt concrete layer and a continuous reinforced concrete layer which are arranged up and down, the continuous reinforced concrete layer is provided with expansion joints extending in the width direction at the two ends of the structure, expansion joint plates are arranged in the expansion joints, a plurality of longitudinal reinforcing steel bars extending in the length direction of the continuous reinforced concrete layer are arranged in the continuous reinforced concrete layer, and the longitudinal reinforcing steel bars penetrate through the expansion joints and are connected with a plurality of transverse reinforcing steel bars and erection reinforcing steel bars. A groove is formed in thesurface of the side, close to the asphalt concrete layer, of the continuous reinforced concrete layer, the groove extends in the width direction and communicates with the expansion joint, and a steelcover plate, at least three rubber asphalt layers and at least three gravel layers are arranged on the bottom wall of the groove, the continuous reinforced concrete composite asphalt pavement expansion joint structure provided by the invention can effectively relieve the problem that the expansion joint of the continuous reinforced concrete slab is reflected to the asphalt concrete surface layer.

Description

technical field [0001] The application relates to the field of pavement structures, in particular to a continuously reinforced concrete composite asphalt pavement expansion joint structure and a construction method thereof. Background technique [0002] Continuously reinforced concrete composite asphalt pavement refers to the pavement composed of continuous reinforced concrete and asphalt concrete, two structural layers of different material types and mechanical properties, in which the continuous reinforced concrete is equipped with longitudinal continuous reinforcement and transverse reinforcement , there is no condensation seam in the horizontal direction. Continuously reinforced concrete and asphalt concrete composite pavement give full play to the respective advantages of different pavement materials. The continuously reinforced concrete slab serves as a rigid foundation to improve the bearing capacity of asphalt pavement and meet the requirements of traffic load condit...

AI Technical Summary

Problems solved by technology

However, the end treatment method using the Maurer joint also has many disadvantages. First, due to the vertical penetration joint from the asphalt surface layer to the continuous reinforced concrete slab, vehicles will have an uncomfortable feeling of jumping when passing by. Second, the special-shaped steel plate The steel fiber concrete on both sides is easy to crack and break under the long-term action of the vehicle load, and it is difficult to maintain

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