Road widening transition section construction method and flattening device

Abstract

The invention relates to a road widening transition section construction method and a flattening device and belongs to the technical field of road widening construction. The road widening transition section construction method comprises steps of a base of an original roadbed being cleaned, leveled and rolled; the leveled and rolled substrate being backfilled with plain soil with the preset thickness; step opening treatment being conducted on the side slope of the original roadbed, and step surfaces being rolled and flattened; paving the concrete on the step surface of the widened splicing part, and synchronously rolling and flattening the concrete by utilizing a flattening device on the slip form paver; starting a slip-form synchronous paver to pave the mixture on the broadened pavement layer, rolling and flattening the mixture paved on the broadened pavement layer until the height of the top surface of the broadened pavement layer is consistent with that of the concrete top surface on the step surface, and then performing common static pressure on the concrete layer and the broadened pavement layer. When the construction method is used, the situation of pressure leakage of the structural layer at the spliced roadbed pavement can be reduced, the potential quality hazard of unsmooth road drainage is effectively reduced, and the construction quality of road widening is improved.

Description

technical field [0001] The application relates to the technical field of road widening construction, in particular to a construction method and a leveling device for a road widening transition section. Background technique [0002] With the improvement of traffic demand and the increase of highway service age, many roads can no longer meet the development needs of the current society, and more and more roads urgently need to be rectified and expanded, such as splicing and widening the existing narrow roadbed and pavement. [0003] At present, in the traditional construction process of widening the roadbed and pavement, the new and old bases of the general roadbed and pavement are not easy to compact and form, and they tend to become weak parts. After a period of subsequent use, the newly widened roadbed and pavement often appear at the joints Collapse and hollowing out may easily cause drainage hazards in the pavement structure layer, which urgently needs to be improved. C...

AI Technical Summary

Problems solved by technology

[0003] At present, in the traditional construction process of widening the roadbed and pavement, the new and old bases of the general roadbed and pavement are not easy to compact and form, and they tend to become weak parts. After a period of subsequent use, the newly widened roadbed and pavement often appear at the joints Collapse and hollowing out may easily cause drainage hazards in the pavement structure layer, which urgently needs to be improved

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