New and old pavement connecting structure and construction process

Abstract

The invention discloses a new and old pavement connecting structure and a construction process, and belongs to a road construction technology. The pavement structure comprises an old pavement structure and a new pavement structure, the old pavement structure is sequentially provided with a cement concrete pavement panel, a cement concrete base layer and a cement concrete subbase layer from top to bottom, and the extending lengths of the cement concrete pavement panel, the cement concrete base layer and the cement concrete subbase layer towards the new pavement structure are increased layer by layer; a connecting section is arranged between the old pavement structure and the new pavement structure, and a step surface is arranged on one side, close to the new pavement structure, of the connecting section; a connecting section matched with the step face on the second cast-in-place cement concrete is arranged on the side, close to the old pavement, of the new pavement structure, and glass fiber grids are arranged at the joints of the connecting section and the step face. The problems of pavement cracking, separation, high and low quality, short road service life, poor driving comfort and the like are effectively solved.

Description

technical field [0001] The invention relates to road construction technology, in particular to a new and old pavement connection structure and construction technology. Background technique [0002] With the continuous development and progress of the society, the road traffic volume increases, especially the early planning and design of the road traffic volume forecast is insufficient, and some early construction roads have become less and less able to meet the growing traffic demand, in order to meet the daily traffic volume demand. Use; old roads need to be reconstructed; the renovation of old roads is based on existing roads, splicing new roads, and increasing the number of lanes to improve the traffic flow capacity of roads. In expressway reconstruction and expansion projects, it is often generated between the new and old embankments. Settlement and deformation lead to diseases such as embankment cracking and pavement damage. The difference in strength between the old and...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development and progress of society, the road traffic volume increases, especially the road traffic volume forecast in the early planning and design is insufficient. use; the old road needs to be rebuilt; the old road is based on the existing road, splicing the new road, increasing the number of lanes to improve the traffic flow capacity of the road, and the reconstruction and expansion of the expressway often occurs between the new and old embankments Settlement and deformation lead to embankment cracking, pavement damage and other diseases. The difference in strength between the old and new subgrades is likely to cause differential settlement, resulting in cracking and separation of the pavement

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