Bridge head pavement subsidence nondestructive quantitative detection and non-excavation type rapid treatment grouting construction method

Abstract

The invention discloses a bridgehead pavement subsidence nondestructive quantitative detection and non-excavation type rapid treatment grouting construction method. The method is characterized in that; the construction method comprises the following steps: (1) carrying out rapid nondestructive testing and quantitative evaluation on pavement void; (2) drilling; (3) arranging a jacking monitoring system; (4) mounting a grouting pipe and installing a grouting head; (5) grouting; (6) performing hole sealing; (7) performing quality control; and (8) performing grouting effect detection. The method solves the industrial problems of large excavation scale, high construction difficulty, difficulty in thorough treatment and large traffic interference in treatment of the bridgehead pavement subsidence disease.

Description

technical field [0001] The invention belongs to the technical field of road surface maintenance, and specifically relates to a quantitative evaluation of bridgehead road surface subsidence based on a rapid nondestructive detection technology and a non-excavation rapid treatment grouting construction method. Background technique [0002] Subsidence disease of bridgehead pavement is an important factor affecting the level of traffic service and driving safety of expressways in operation. Generally, during the construction of the transitional section between the back of the abutment and the filled subgrade, due to the particularity of the location and the construction process of the filling, it is difficult to compact the backfill material, resulting in subsidence and jumping of the abutment back road during operation, which has become a major problem in the industry. . Especially in Sichuan, which is located in the mountainous area of ​​southwest my country, the bridge-tunnel...

AI Technical Summary

Problems solved by technology

At present, most of the non-excavation treatment technology is drilling and injecting cement-based grouting materials. Due to the dry shrinkage of cement when hardening, the addition of water in the grouting process, and the lack of non-destructive quantitative evaluation methods before grouting, grouting is subjective. Random, it is difficult to achieve a good treatment effect, and the strength of the grouting material grows slowly, it takes time to maintain health, and cannot be quickly opened to traffic

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