FRP wrapped prestress recycled concrete tubular pile

Abstract

The invention discloses an FRP wrapped prestress recycled concrete tubular pile mainly formed by an FRP pipe, a round reinforcement cage framework, cross steel ribs and recycled concrete. The round reinforcement cage framework and the cross steel ribs are arranged in the FRP pipe, and a round inner cavity is formed in the FRP pipe through the recycled concrete. The round reinforcement cage framework is formed by welding longitudinal prestressed tendons and spiral stirrups. An FRP pipe wrapped pile body resistant to corrosion, light and high in strength can be effectively prevented from being corroded, the corrosion problem of the tubular pile is solved, and the durability of a pile foundation is improved. The inner supporting cross steel ribs can fully achieve the respective advantages of steel, prestressed reinforcement and concrete, the stress performance of the recycled concrete is improved, the bearing capacity and stability of the single pile are improved, the lateral rigidity of the pile body is increased, and transverse deformation is reduced. Waste concrete is fully utilized as recycled aggregate, and application and popularization of the recycled concrete in building foundation engineering are facilitated.

Description

technical field [0001] The invention belongs to the field of pile foundation engineering in building foundation engineering, in particular to an outsourcing FRP prestressed recycled concrete pipe pile. Background technique [0002] With the rapid development of the world economy, reinforced concrete structures have entered a period of rapid development, and the construction of new buildings and the demolition of old buildings will produce a large amount of waste concrete. In 2014, my country's construction waste production exceeded 1.5 billion tons. Around 2020, the amount of construction waste generated in my country may reach its peak. Recycling waste concrete can not only reduce the development of natural resources, but also reduce the amount of waste discharged into nature, which has significant social, economic and environmental benefits. However, due to the existence of old mortar, the performance of recycled coarse aggregate is quite different from that of natural c...

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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