Ocean engineering composite column

Abstract

The invention discloses an ocean engineering composite column which comprises an active powder concrete sleeve (1), stirrups (2), longitudinal bars (3) and a concrete column (4), wherein the stirrups (2) and the longitudinal bars (3) are arranged in the active powder concrete sleeve (1). The ocean engineering composite column is characterized in that the stirrups (2) and the longitudinal bars (3) are separately sealed fiber-enhanced plastic stirrups (2) and fiber-enhanced plastic longitudinal bars (3); corrosion-resistant staple fibers are mixed into active powder concrete of the sleeve (1); and the two ends of the active powder concrete sleeve (1) are separately provided with connectors (5) which are used for connecting the sleeves. The ocean engineering composite column is excellent in marine environment corrosion resistance, can adopt prefabricated construction, is high in axial carrying capacity, can utilize field materials such as seawater, sea sand and the like, is convenient to connect, is good in economical efficiency, can meet a novel structural column needed by construction of ocean engineering, especially ocean island-reef engineering, and can replace a steel tube column in the ocean engineering.

Description

technical field [0001] The invention mainly relates to the fields of marine engineering and building structures in civil engineering, in particular to a combined column used in marine engineering. Background technique [0002] The ocean is rich in natural resources, especially energy and mineral resources. At the same time, the ocean also provides a space environment for human beings to survive. The ocean area under my country's jurisdiction is very broad, which contains rich marine natural resources. The development of marine resources is an emerging field of important strategic significance. Therefore, the 21st century is also called the "Ocean Century". In my country's vast territorial waters, there are many pelagic islands and reefs, which are far away from the mainland, with harsh natural environments, scarce resources, and extremely inconvenient transportation. However, it is of great significance to the development and construction of pelagic islands and reefs. It is...

AI Technical Summary

Problems solved by technology

However, the use of this active powder concrete casing column directly for marine engineering construction has the following technical defects in terms of performance: First, at present, the ordinary steel fiber or copper-coated steel fiber mixed in RPC cannot effectively resist the marine environment. Corrosion, the corrosion of steel fibers not only affects the appearance of the components, but also makes the corrosive medium erode from the surface of the components to the interior of the components along the channels formed by the steel fibers, causing RPC components to be corroded and damaged; second, the chloride ion permeability in the marine environment Strong, once the chloride ion diffuses to the surface of the steel bar in the casing, the steel bar will rust, which will lead to cracking and damage of the casing; third, the reinforced concrete column cast in the RPC casing cannot use seawater and sea sand as raw materials, and cannot Meet the requirements of local materials; Fourth, the RPC casing cannot be extended, and the construction is inconvenient

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