Splicing construction method for rebuilt and expanded new and old roads

Abstract

The technical scheme of the invention provides a splicing construction method for rebuilt and expanded new and old roads. A step milling position is arranged on a position which is 10cm far away fromthe inner side of an original road traffic lane to avoid a wheel track tape; under a vehicle load function, longitudinal cracks can be effectively reduced; the width of an original road asphalt layermilling step is 45cm; the lime-ash soil aggregates of the original road are milled to form a step of which the width is 25cm; in an early period, the lime earth step of the original road is kept, andis cleared in a later period; the lime earth step and a new water stability base course are jointly paved, so that step integrity and lime earth strength can be guaranteed; and a geogrid of which thewidth is 8m is upwards folded by 25cm along the step, the folded geogrid is fixed by a U-shaped nail on the step, and the skid resistance capability and the bearing capacity of a spliced width roadbedcan be integrally improved. By use of the splicing construction method for rebuilt and expanded new and old roads, complex technologies are reduced, key links are paid attention, construction difficulties are lowered, new and old road splicing quality is improved, and a purpose of efficient construction and stable quality control is realized, and the splicing construction method is good.

Description

technical field [0001] The application relates to the technical field of splicing and splicing construction of new and old roads for reconstruction and expansion of high speeds, in particular to a splicing construction method for reconstruction and expansion of new and old roads. Background technique [0002] At present, with the development of the economy and the increasing number of vehicles, there are more and more projects for reconstruction and expansion of the original narrow and old roads. However, the problem of splicing new and old roads in the reconstruction and expansion of road construction has not been well solved so far. There are poor water tightness at the splicing parts of new and old roads, inconvenient construction, time-consuming and laborious, poor compactness, and shear and bending resistance. Poor and other problems are mainly manifested in the longitudinal cracking of the splicing parts between the old and new roads, causing rainwater to infiltrate. ...

AI Technical Summary

Problems solved by technology

However, the problem of splicing new and old roads in the reconstruction and expansion of road construction has not been well solved so far. There are poor water tightness at the splicing parts of new and old roads, inconvenient construction, time-consuming and laborious, poor compactness, and shear and bending resistance. Poor and other problems, mainly manifested in the longitudinal cracking of the splicing parts between the old and new roads, causing rainwater to infiltrate

This will lead to uneven settlement of the spliced ​​road surface, water damage, cracking, roadbed sideslip and other diseases, seriously affecting the overall project quality of the road reconstruction and expansion

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