Tunnel lining thickness insufficiency fast reinforcement method based on clad steel plate or steel strip highway

Abstract

The invention discloses a tunnel lining thickness insufficiency fast reinforcement method based on a clad steel plate or a steel strip highway. The method comprises the following steps that a, an areawith insufficient second lining is detected; b, the lining surface in the second lining range is polished; c, distribution of to-be-processed steel bars in the second lining range is clearly detected, and fixing anchor bars are arranged in the second lining range at intervals; d, the steel plate is arranged at the fixing anchor rods in a penetrating mode, a grouting gap is reserved between the attaching surfaces of the steel plate and the second lining, the steel plate is sealed by structure glue, after sealed edges solidify and harden, and steel adhesive glue is arranged through a glue filling opening in a filling mode; and e, after steel plate construction is finished, the steel plate is sealed with epoxy resin adhesive, and the steel plates are uniform coated with a reflective layer every 200 meters. The method can quickly deal with the defect of the insufficient thickness of the second lining concrete of the local tunnel lining and can achieve a certain of reinforcement effect. Through steel strip bonding, grooving is not required, influence on building limit is little, forming is quick, and lining strength is improved.

Description

technical field [0001] The invention relates to a rapid reinforcement method based on composite steel plates or steel strips for insufficient thickness of highway tunnel lining. Background technique [0002] With the rapid development of my country's traffic, the mileage of various roads is increasing, and the number of new and opened tunnels is also increasing year by year. Various tunnel diseases or defects affect the safety of tunnels, especially the lack of thickness of common tunnel lining secondary lining concrete. Tunnel protection generally includes three layers, from the inside to the outside are the initial support layer, water-resistant layer and secondary lining layer; however, due to various reasons, the secondary lining layer of newly built tunnels often has insufficient lining thickness, which affects the safety of the tunnel. Therefore, the competent department of traffic quality and the regulations require that the structure be repaired and reinforced, and t...

AI Technical Summary

Problems solved by technology

This method has a certain effect on the lack of thickness of the tunnel lining protective layer and the treatment and repair of exposed steel defects, but there are two problems. One is that when slotting and placing I-beams, the integrity of the lining must be excavated. The steel bars need to be cut off to affect the force; the second is that the inner surface of the carbon fiber woven mesh is sprayed with a composite mortar layer with a certain thickness, which has the problem of encroaching on the tunnel boundary

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