Construction Method of Settlement Disposal Structure of Embankment of Open-to-Traffic Road

Abstract

The invention relates to a construction method for settlement disposal of road embankments that have been opened to traffic. Pile planting holes and replacement filling holes are arranged vertically and uniformly in the original embankment; the depth of the pile planting holes reaches the relative bearing layer, and the replacement filling holes are only arranged in the original embankment ; There are coaxial high-pressure jet-grouting piles and prestressed pipe piles in the pile-planting holes, and air bubbles are filled in the pile-planting holes above the high-pressure jet-grouting piles and prestressed pipe piles. Fill air bubbles and mix light soil; install a slurry-solid base bearing plate on the top of the soft soil layer and the bottom of the original embankment; open a guide hole groove on the top of the original road surface, and lay a three-dimensional steel mesh on the top of the road surface and in the lead hole groove, three-dimensional steel mesh A new subgrade and a new pavement layer are laid sequentially on the sheet. The invention can not only improve the integrity and bearing capacity of the roadbed, but also reduce the weight of the embankment filler, and realize rapid control of roadbed settlement without damaging the road surface structure layer.

Description

technical field [0001] The invention relates to a settlement disposal structure and construction method of an embankment of a traffic-opened road, which belongs to the field of foundation engineering and is suitable for settlement control, disease prevention and old road reconstruction projects during the operation period of roads with large post-construction settlement and uneven settlement deformation. Background technique [0002] At present, the overall strength of the original road pavement in my country is basically intact and there is no major damage. However, due to the long service life and untimely maintenance, there are pitted pavement surfaces, large seam widths, partial misalignment, ugly appearance, and poor driving. Noisy, uncomfortable phenomenon. Although some have not reached the design period, due to the sharp increase in traffic volume, the increasingly heavy vehicle axle load, design, construction and other reasons, the road surface is damaged and the qua...

AI Technical Summary

Problems solved by technology

[0004] To sum up, although there are some methods that can be used to deal with abnormal settlement problems of highways that have been opened to traffic, most of them need to destroy the original pavement structure and take temporary traffic control measures such as road closures. It is difficult to apply to road sections with high saturation; the existing method of embankment lateral drilling light-weight replacement to control settlement under normal traffic conditions is difficult to solve the problem of load transfer path and embankment integrity

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