Bridge pier column under high-concentration salt solution corrosion environment

Abstract

The invention discloses a bridge pier column under a high-concentration salt solution corrosion environment. The bridge pier column comprises a pier column body arranged on a bearing platform. A column boot is arranged on the periphery of the pier column body within a range from the top surface of the bearing platform to above the maximum water level of a salt pond, gaps are reserved between the column boot and the pier column body, sealant is filled in the gaps, and a rainproof cover fixed on the pier column body is arranged at the top of the column boot. The rainproof cover is provided with a slope surface with a high inner edge and a low outer edge, and the outer diameter of the rainproof cover is larger than that of the column boot. The column boot and the rainproof cover serve as anti-corrosive protecting members of the pier column, high-concentration salt solution is isolated to avoid corroding the pier column, damage of a main body structure is avoided, main body structure safety is guaranteed, service life of the bridge pier column is prolonged, and later-period maintenance difficulty of the bridge pier column is reduced. The column boot is of a concrete structure and is convenient to construct, later-period maintenance workload is small, and engineering comprehensive fabricating cost is low. The column boot is not engaged in structure stress, quake-proof plastic hinge design difficulty of the bridge pier column is reduced, and the bridge pier column is easy to maintain especially after destruction of earthquake action.

Description

technical field [0001] The invention relates to a bridge structure, in particular to an anti-corrosion structure for bridge pier columns. Background technique [0002] "Technical Specifications for Anti-corrosion of Concrete Structures in Highway Engineering (JTG / T B07-01-2006)" clearly stipulates that "the anti-corrosion durability of highway concrete structures shall be Design. When different components in the same structure and different parts of the same component have different local environments, they should be treated differently. The durability design of concrete structure anti-corrosion should ensure the application of the structure in its long-term service life In order to meet the needs of reliability, repairability and safety, maintenance and inspection requirements during use must be put forward." At the same time, the "General Specifications for Design of Highway Bridges and Culverts" proposes that the basic design principles of bridges are "advanced technology...

AI Technical Summary

Problems solved by technology

Conventional additional anti-corrosion measures for bridge pier columns include concrete anti-corrosion surface layer and outsourcing steel casing, etc., but the service life of concrete anti-corrosion surface layer is generally less than 20 years, and the amount of steel used in outsourcing steel casing is large, so this additional The cost of anti-corrosion measures is high, and the workload of later maintenance is heavy

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