Expansion joint structure and construction method of cement concrete pavement based on high-strength airbag

Abstract

The invention discloses a cement concrete pavement expansion joint structure based on high-strength airbags, which includes two concrete slabs, and there are gaps between the concrete slabs to form expansion joints, and a plurality of force transmission parallel to the length direction of the concrete slabs is arranged between the concrete slabs. The rods are filled with high-strength airbags in the expansion joints between the concrete slabs, and the high-strength airbags are reserved with holes matching the number and height positions of the dowel rods and vertically arranged gaps for the dowel rods to pass through. The invention also discloses a construction method of the cement concrete pavement expansion joint structure based on the high-strength air bag. In the present invention, the expansion joints between the concretes are always filled with deformable high-strength airbags, and sand and gravel and rainwater will not fall into the expansion joints, which can prevent the expansion joints from being blocked and rainwater from causing diseases. Therefore, the overall quality of the expansion joint section of the cement concrete pavement has been significantly improved, and the later pavement maintenance costs will be greatly reduced.

Description

technical field [0001] The invention relates to a cement pavement expansion joint structure and a construction method thereof, in particular to a cement concrete pavement expansion joint structure capable of preventing water damage and a construction method thereof, and belongs to the technical field of cement concrete pavement construction. Background technique [0002] Cement concrete pavement 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. [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 where the ce...

AI Technical Summary

Problems solved by technology

Although the expansion joints are filled with joint filler, as the concrete slab expands and the joint sealant ages, rainwater easily enters the pavement structure layer through the expansion joints, causing a series of pavement diseases caused by insufficient water stability of the pavement structure. Seriously affect road driving comfort and even safety

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