Construction method for embankment settlement treatment structure of road open to traffic

Abstract

The invention relates to a construction method for embankment settlement treatment of a road open to traffic. The construction method comprises steps as follows: pile embedding holes and replacing and filling holes are vertically and uniformly formed in an original embankment at intervals; the pile embedding holes go deep into a relative supporting layer, and the replacing and filling holes are only formed in the original embankment; high-pressure jet grouting piles and prestressed pipe piles which are coaxial are arranged in the pile embedding holes, the pile embedding holes above the high-pressure jet grouting piles and the prestressed pipe piles are filled with foamed mixture lightweight soil, and the whole replacing and filling holes are filled with the foamed mixture lightweight soil; slurry cementing substrate bearing plates are arranged at the top of a soft soil layer and the bottom of the original embankment; hole guiding grooves are formed in the top of the original road surface; stereoscopic reinforcing steel meshes are paved at the top of the pavement and in the hole guiding grooves; and a new roadbed and a new road surface layer are sequentially paved on the stereoscopic reinforcing steel meshes. According to the construction method, integrity and bearing capacity of the roadbed can be improved, the weight of embankment padding can be reduced, and the roadbed settlement is rapidly controlled on the premise that the road surface structure layer is not damaged.

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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