Composite pile with high permanent stability protection layer and its production and construction method

Abstract

Disclosed is a high-durability protective layer compound pile. The structure of high-durability protective layer compound pile comprises: the compound pile is composed of a core bearing structure which is wrapped with a high-durability protective layer, the material of the protective layer adopts plastic or other modified products, asphalt and mortar or concrete, alkali activated material and the mortar or the concrete, geopolymer and the mortar or the concrete, reactive powder concrete, fiber reinforcement concrete base material, and resin mortar or concrete; The manufacturing and the construction can adopt six methods: firstly, site-casting can be performed to the protective layer and a core structure simultaneously; secondly, after the site-casting is performed to the protection wall of the protective layer, the site-casting is performed to the site-cast protective wall; thirdly, prefabrication is performed to the sleeve of the protective layer, and site-casting is carried out to the prefabricated sleeve of the site cast core structure of the sunk tube; fourthly, prefabrication is performed to the sleeve of the protective layer, the sleeve is taken as an outer mould plate to prefabricate the prefabricated sleeve of the core structure; fifthly, prefabrication is performed to the core structure, the core structure is taken as an inner mould plate to prefabricate the prefabricated sleeve of the core structure; and sixthly, site-casting is implemented to the protective layer and the core structure simultaneously.

Description

(1) Technical field: [0001] The invention provides a composite pile with a high-durability protective layer and its production and construction method, which relates to a new material and new technology for improving the durability of ordinary pile foundation structures, and belongs to civil engineering materials and construction techniques in civil engineering field. (two) background technology: [0002] In the construction of infrastructure in offshore, coastal and reclamation sites and western saline soil sites, it is often necessary to use cast-in-place or prefabricated reinforced concrete piles, plain concrete piles, steel pipe concrete piles and other pile foundations. Because the soil of these sites contains a large amount of salt that is corrosive to concrete and steel bars, which poses a great threat to the durability of pile foundations, the service life of many structures in such environments is only ten years or even a few years. Since the pile foundation is alm...

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Problems solved by technology

However, these materials are not yet suitable for structural materials, or require special processes, or are relatively expensive, so it is difficult to be used as a load-bearing material for concrete piles.

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