Flexible base layer asphalt pavement splicing and widening construction method

Abstract

The invention relates to a flexible base layer asphalt pavement splicing and widening construction method. The construction method is characterized in that old road pavement structure layers are milled and planed, and then connecting steps are arranged at the interfaces of the old road structure layers; then an old road splicing widening connecting joint and the road bed outer edge of a widening pavement are each provided with a road bed solidifying beam, and a steel bar mesh grid is laid on the top surface of each road bed solidifying beam; materials generated after the upper face layer of an old pavement structure and the other structure layers of the old pavement structure are milled are used for new road base layers; in construction, a glass fiber geogrid is laid on the top surface of a two-ash gravel recycling layer, a connecting grid and joint filling slurry are arranged at the connecting joint of a new pavement and an old pavement, and a crack partition plate is laid at a pavement splicing widening connecting joint on the top surface of a lower face layer; and finally, paving construction of pavement upper face layers of the new pavement and the old pavement are conducted simultaneously. The old road building materials can be recycled, the integrality of an asphalt pavement splicing widening structure can be improved, and the solidifying cost of the pavements in the later period can further be reduced.

Description

technical field [0001] The invention relates to a splicing and widening construction method of a flexible base asphalt pavement, in particular to a splicing and widening construction method of a flexible base asphalt pavement that can effectively enhance the integrity of the splicing and widening structure of the asphalt pavement, reduce the later maintenance cost of the road surface, and protect the social environment. It belongs to the field of road engineering and is suitable for the renovation project of flexible base asphalt pavement of high-grade highways and urban arterial roads. Background technique [0002] With the rapid development of my country's economy, many original roads can no longer meet the growing demand for vehicle traffic, making road widening the mainstream of road construction in my country at this stage. Flexible base asphalt pavement has been widely used in engineering applications in my country's high-grade highways. However, in the splicing and wi...

AI Technical Summary

Problems solved by technology

Some analysis found that although the existing flexible base asphalt pavement splicing and widening structure and construction methods have achieved relatively ideal construction quality under suitable engineering environmental conditions, they have high requirements for driving comfort, complex construction environments, and difficult construction quality control. In the reconstruction and expansion project of flexible base asphalt pavement, there are still problems to be solved such as effective control of joint differential deformation, improvement of roadbed bearing capacity, and reuse of old road materials.

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