Heightening and reinforcing structure and method for existing reinforced concrete retaining wall

Abstract

The invention provides a heightening and reinforcing structure and method for an existing reinforced concrete retaining wall. The heightening and reinforcing structure comprises the existing reinforced concrete retaining wall. A reinforcing vertical plate is arranged on the upper portion of the existing reinforced concrete retaining wall in an internally-attached mode, a transverse decompression and unloading flat plate is arranged at the bottom of the reinforcing vertical plate and located on the upper portion of the wall back of the existing reinforced concrete retaining wall; a pile foundation is arranged on the lower portion of the transverse decompression and unloading flat plate, a longitudinal steel bar of the pile foundation is anchored into the transverse decompression and unloading flat plate; and a supporting plate is arranged between the reinforcing vertical plate and the transverse decompression and unloading flat plate. The heightening and reinforcing method comprises the six steps of construction preparation, construction of a foundation pile, excavation of a foundation trench, construction of the transverse decompression and unloading flat plate, construction of the reinforcing vertical plate and the supporting plate, and refilling of the wall back at the reinforcing vertical plate. The time and the cost can be saved, meanwhile, the safety and stability of an original slope are guaranteed, parameters such as the size of the retaining wall and the foundation treatment form can be set according to specific conditions, and wide applicability is achieved.

Description

technical field [0001] The invention belongs to the technology of heightening and strengthening retaining walls, and in particular relates to a structure and method for heightening and strengthening reinforced concrete retaining walls in service. Background technique [0002] my country is a country with undulating terrain and landforms. A large number of construction projects, especially highway and railway projects, are inevitably built in complex areas such as mountainous areas. Due to the complex strata in the above areas, large changes in geological conditions, and many dangerous rocks, etc. With the existence of many unfavorable factors, slope support engineering is particularly important. [0003] The retaining wall is a structure used to support roadbed fill or hillside soil and prevent the deformation and instability of fill or soil. Retaining walls can be used to stabilize embankments and cutting slopes, reduce the height of excavated slopes, reduce the amount of e...

AI Technical Summary

Problems solved by technology

[0004] As a long-term structure, the retaining wall may encounter cracks and bulges during its use, or it may encounter planning adjustments that lead to heightening of the wall, and even accidental collapse in very few places. The development, piled up soil, filled soil, etc. caused the height of the original slope to increase, making the original retaining wall no longer applicable, and the safety and stability could not meet the requirements, threatening the life and property safety of the country and the people

The traditional solution is generally to demolish and rebuild the original retaining wall, but this method requires a large amount of work, is expensive, labor-intensive and time-consuming, and is also accompanied by certain dangers. The original slope is prone to instability. Therefore, no matter from the perspective of engineering construction or the safety of people's lives and property, the research and development of heightening and strengthening technology for reinforced concrete retaining walls in service is very necessary.

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