Structure and Construction Method of Steel Anchor Pipe Reinforcing Weathered Rock Strata Reinforced Balance Weight Retaining Wall

Abstract

The invention discloses a structure and a construction method of a steel anchor pipe reinforcing the weathered rock layer with reinforcement and balance weight type retaining wall. The steel anchor pipe of the present invention realizes the reinforcement treatment of the weathered rock layer through grouting inside and outside the pipe, and the treated rock mass foundation bears The strength is greatly improved, fully meeting the foundation bearing requirements of the upper embankment retaining structure; at the same time, the stability of the weathered rock layer after treatment is improved, and the steel anchor pipe can also be used as a slope anti-slide structure, which realizes the anti-slip and disaster reduction of the original weathered rock layer slope The effect; the reinforced earth (counterweight type) retaining wall of the present invention has realized the breakthrough of traditional retaining wall wall thickness dimension, and the laying of geogrid has greater meaning for retaining wall stability simultaneously; The present invention The construction method is mature, the process is reasonable, and it has the advantages of rapid construction and outstanding economic benefits. The invention has broad prospects for the geological application of weathered rock formations to filling road embankments and retaining structures.

Description

technical field [0001] The invention relates to the field of road filling slopes and supports, in particular to a structure and a construction method of a joist foundation reinforced balance weight type retaining wall on a weathered rock layer foundation reinforced by a steel anchor pipe. Background technique [0002] In recent years, traffic engineering has developed rapidly, especially the construction scale of expressways in mountainous areas is increasing day by day. While the construction of expressways in mountainous areas plays an important role in promoting local economic development and facilitating the travel of the people, several key technologies related to road traffic construction in mountainous areas The problems kept popping up. Among them, the slope stability and retaining structure of the highway embankment formed on the fully weathered and strongly weathered rock formations is an important design and construction problem that needs to be solved urgently. ...

AI Technical Summary

Problems solved by technology

At present, the most direct way is to pass the pile foundation through the weathered rock layer and the pile end is located on the bearing layer to realize the load bearing of the upper embankment body and the retaining structure. However, the traditional concrete pile foundation generally has a large pile length, and the construction of the pile foundation During the excavation of pile holes in the process, due to the weathered rock formation conditions, there are technical difficulties in effective support and safe excavation. In addition, the long drilling construction period is not conducive to construction cost control

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