A high-durability cement concrete pavement expansion joint structure and its construction method

Abstract

The invention discloses a high-durability cement concrete pavement expansion joint structure, which comprises two concrete slabs, an expansion joint is arranged between the concrete slabs, and grooves and semi-convexes are arranged on the two concrete slabs near the expansion joints The concave structure of the platform, two concave structures together form a convex structure, and two semi-convex platforms together form a convex structure of the convex structure; in the concrete slab at the lower part of the convex structure, there is a For the dowel bar, vertical steel bars are arranged in the semi-bosses on both sides of the expansion joint, and a sleeve is provided at one end of the dowel bar, and the directions of the sleeves of adjacent dowel bars are opposite; The expansion joint structure of the high-durability cement concrete pavement also includes a cover plate added on the convex structure. The invention also provides a construction method for the expansion joint structure of the high-durability cement concrete pavement. The durability of the expansion joints of the cement concrete pavement of the invention is effectively improved, the service level of the pavement is significantly improved, and the maintenance cost of the pavement in the later stage is also greatly reduced.

Description

technical field [0001] The invention relates to a pavement expansion joint structure and a construction method thereof, in particular to a high-durability cement concrete pavement expansion joint structure and a construction method thereof, and belongs to the technical field of cement concrete pavement construction. Background technique [0002] Cement concrete has the advantages of high strength, good durability, high bearing capacity, and is conducive to driving at night. At present, cement concrete pavement occupies a large proportion of all grades of roads and urban roads in my country, and will always coexist with asphalt pavement. [0003] In order to make the cement concrete slab stretch freely when the temperature rises and eliminate the temperature stress caused by the temperature change, the cement concrete pavement needs to be provided with expansion joints every certain length. The expansion joint adopts the form of real joint, so the expansion joint is the node ...

AI Technical Summary

Problems solved by technology

The traditional cement concrete pavement expansion joints are filled with expansion joint plates and joint fillers, and are exposed on the road surface. With the increase of the service life of the pavement, the above-mentioned diseases will inevitably appear in the expansion joints, so it is necessary to use a new type of cement concrete pavement expansion joints

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