Road widening treatment method

Abstract

The invention provides a road widening treatment method which comprises the following steps: step 1, arranging a vertical drainage system along the joint of a new roadbed and an old roadbed; step 2, selecting a filler consistent with the old roadbed filler as a new roadbed filler, filling and compacting, and firstly filling sand gravel or gravelly soil at the bottom to serve as a substrate layer;step 3, paving and roughly flattening the roadbed filling material. step 4, paving and finely leveling the roadbed filling material. and step 5, rolling the filling material. The method solves the problems of longitudinal and transverse cracks and other diseases of the pavement after the road widening and reconstruction engineering is completed, can improve the bearing capacity of the foundation,controls the settlement deformation of the newly-filled roadbed, and enhances the anti-benching capacity of the junction of the newly-filled roadbed and the old roadbed and the stability of the widened roadbed.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a road widening processing method. Background technique [0002] In recent years, with the rapid improvement of the national economic level and the rapid development of urban roads, more and more old urban roads have been unable to meet the existing traffic demand. Due to many reasons such as the sharp increase in traffic volume, low design standards of old roads, aging of old roads, and difficulty in selecting new routes due to high urbanization, widening and transforming existing roads has become an economical, fast, and efficient way to improve the passage capacity between urban areas. Reasonably effective method. However, there are many differences between the reconstruction of old roads and new roads. The degree of optimization of the plan, longitudinal section, and cross-section design, as well as the design of the subgrade and pavement structure, all directly af...

AI Technical Summary

Problems solved by technology

However, there are many differences between the reconstruction of old roads and new roads. The degree of optimization of the plan, longitudinal section, and cross-section design, as well as the design of the subgrade and pavement structure, all directly affect the project scale, cost, and service performance after opening to traffic.

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