A road guardrail reinforcement device and reinforcement method thereof

Abstract

The invention relates to a road guardrail reinforcement device, which includes a hollow foundation guardrail column and a corrugated guardrail board, and is characterized in that: a reinforcement hole is drilled toward the foundation along the center of the hollow foundation guardrail column, and a reinforcement cage is arranged in the reinforcement hole and the hollow column , the reinforcement cage is filled with concrete blocks, and the heightened guardrail columns and protective beams are installed on the basic guardrail columns. The present invention makes full use of the characteristics of steel pipe concrete, and the poured reinforced concrete and columns form a steel pipe concrete structure, which changes the cross-sectional properties of the columns, enhances the ability of the columns to resist bending and tensile stress, and increases the burial depth of the columns by reinforcing the reinforced concrete in the holes. Enhance the anti-collision ability of the column. The protective beam can effectively increase the height of the guardrail and prevent vehicles from rushing out of the guardrail. The joint force of the protective beam and the corrugated guardrail board makes up for the defect of insufficient anti-collision ability caused by the insufficient thickness of the guardrail board. This upgrade and transformation measure does not need to abolish the basic guardrail components, and utilizes the original materials to the greatest extent. It can also upgrade the old guardrail and use it in the new expressway, saving costs and reducing waste.

Description

technical field [0001] The invention belongs to the technical field of highway guardrail maintenance, and in particular relates to a highway guardrail reinforcement device and a reinforcement method thereof. Background technique [0002] Since the 1990s, my country's highway construction has developed rapidly. By the end of 2006, the total mileage of my country's highways had reached nearly 45,000 kilometers. Most of these expressways are based on the regulations in the "Technical Specifications for the Design and Construction of Expressway Traffic Safety Facilities (JTJ074)" published in 1994, that is, the anti-collision grades of expressway general accidents or major accident sections adopt A and Am standards, and the anti-collision The capacity is 93 kilojoules, among which the A-level roadside wave beam guardrail uses a column with an outer diameter of 114mm, a wall thickness of 4.5mm, and a buried depth of 1100mm. The thickness of the guardrail is 3mm, and the wall thi...

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Problems solved by technology

[0007] At the same time, the buried deep part of the old guardrail column has a certain corrosion phenomenon due to long-term water and soil erosion and cannot be maintained, and the strength of the buried deep part of the column is also insufficient.

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