Cast-in-place pile used in high concentration saline solution corrosion environment and construction method thereof

Abstract

The invention discloses a cast-in-place pile used in a high concentration saline solution corrosion environment and a construction method thereof. A steel pile casing is arranged on the periphery of a cast-in-place pile body, the bottom edge of the steel pile casing is arranged below a high concentration saline solution corrosion area, and the top edge of the steel pile casting is level to the top portion of the cast-in-place pile body. The construction method of the cast-in-place pile is that the length and wall thickness of the steel pile casing are determined first, the steel pile casing is manufactured in advance, then the steel pile casing is sunk to be in place and level to the designed height of the cast-in-place pile body, and finally the cast-in-place pile body is constructed in the steel pile casing. The steel pile casing is used as a corrosion-resistant protecting barrier of the cast-in-place pile body, and the high concentration saline solution is prevented from corroding the cast-in-place pile body. Corrosion-resistant age limit of the steel pile casing can be controlled through steel plate thickness, corrosion-resistant effect reliability degree is high, and a permanent protective effect within the service life of the cast-in-place pile body can be achieved. Construction is simple, the process is mature, the steel pile casing is used as a template of the cast-in-place pile in a construction process, a hole-collapsing preventing effect and a protecting effect for soil with loose surface layers and sludge soil are obtained, and the cast-in-place pile and the construction method are favorable for pile foundation construction.

Description

technical field [0001] The invention relates to a pile foundation structure and a construction method thereof, in particular to an anti-corrosion structure of a cast-in-place pile foundation and a construction method thereof. 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...

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Problems solved by technology

[0004] The cast-in-situ pile foundation is located below the surface, which is a concealed project. It is not easy to be found after being damaged by corrosion, and the inspection and maintenance work is extremely difficult. Therefore, it poses a challenge to the anti-corrosion durability design of the cast-in-place pile foundation in a high-concentration salt solution corrosion environment.

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