PVC pipe and thick wall steel tube composite hollow recycled concrete pile

Abstract

The invention discloses a PVC pipe and thick wall steel tube composite hollow recycled concrete pile, which is mainly prepared from PVC pipes, a round reinforcement cage framework, thick wall steel tubes and recycled concrete, wherein the round reinforcement cage framework and the thick wall steel tubes are arranged in PVC pipes, and the three are concentrically arranged; recycled concrete is poured into the PVC pipes and the thick wall steel tubes; the built-in thick wall steel tubes are capable of improving single-pile bearing capacity and non-deformability by a large margin; the externally covered PVC pipes are capable of effectively preventing pile bodies from being corroded and improving pipe body durability; at the same time, the recycled concrete inside can be jointed restrained by the PVC pipes and spiral stirrups, thus further enhancing composite pile bearing capacity; and waste concrete can be used as recycled aggregate, thus being favor of popularization and application of recycled concrete in building foundation engineering. In short, the PVC pipe and thick wall steel tube composite hollow recycled concrete pile has the advantages of good pile formation quality, high bearing capability, good non-deformability, good durability, small environment influence, quick construction speed and the like.

Description

technical field [0001] The invention belongs to the field of pile foundation engineering in building foundation engineering, and in particular relates to a composite hollow recycled concrete pile of PVC pipe and thick-walled steel pipe. Background technique [0002] For reinforced concrete piles serving in oceans, ports, saline-alkali areas, groundwater or inland areas with high concentrations of corrosive media in the soil, the pile body will be corroded by corrosive substances for a long time, such as chloride ion penetration, sulfate corrosion , freeze-thaw cycles, etc., the durability of pile foundations is very prominent. In addition, the pile body is buried deep in the ground, making it difficult to carry out visual inspection. Under the action of corrosive medium, the pile body will corrode the steel bar, the composition of the concrete will change, the volume will expand, and finally crack and peel off, and the pile body will lose its bearing capacity. Therefore, t...

AI Technical Summary

Problems solved by technology

However, according to the current construction technology of prefabricated concrete piles, the production process requires various processes such as formwork support and formwork removal, which consumes a lot of steel formwork or wood formwork, increasing the workload and construction cost

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