An anti-seismic and corrosion-resistant prestressed pipe pile and its manufacturing method

Abstract

The invention discloses an anti-seismic anti-corrosive prestress pipe pile which comprises a pile body, and steel bars, namely, longitudinal main ribs, a double helix stirrup and an annular stirrup that are embedded into the pile body; the double helix stirrup is wound on the outer sides of the longitudinal main ribs; the annular stirrup is welded on the inner sides of the longitudinal main ribs; the helix direction of the double helix stirrup is intersected with the oblique direction of the annular stirrup; double helix structures formed by distributing helix ribs and helix grooves in a spaced manner are arranged on the surfaces of the steel bars; the steel bars are coated with first anti-corrosive layers which are epoxy resin antirust layers; the pile body is a concrete pile body; and an organosilicon anti-corrosive layer is arranged on the surface of the pile body. The anti-seismic anti-corrosive prestress pipe pile has the advantages of good erosion resistance and high acid and alkali resistance, is high in shearing resistance, good in bending resistance and bearing capacity, excellent in anti-seismic property and long in service life, and is particularly suitable for coastal soft soil. More preferably, the anti-seismic anti-corrosive prestress pipe pile is short in manufacturing cycle, high in safety and low in cost.

Description

technical field [0001] The invention relates to the field of prestressed pipe pile technology for building and its manufacture, in particular to an anti-seismic and corrosion-resistant prestressed concrete pipe pile and a manufacturing method thereof. Background technique [0002] PHC (prestressed high-strength concrete) pipe pile is the abbreviation of prestressed high-strength concrete pipe pile. It is the most commonly used concrete component in building foundations and is widely used in various construction, transportation, water conservancy and other projects. my country is the largest producer and user of pipe piles in the world. In recent years, the national average annual output has exceeded 350 million meters. Concrete is one of the main raw materials used in pipe piles, and it is also the most important raw material. Concrete, referred to as "concrete": refers to the collective name of engineering composite materials that use cementitious materials to cement aggreg...

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Problems solved by technology

This production method has a complicated process, and needs to add storage tanks and metering equipment for finely ground slag and finely ground fly ash. In addition, this type of pipe pile is not strong enough and has poor seismic performance; the pipe pile has limited corrosion resistance and is easy to corrode. The life of the pile is short, and there is a risk of collapse; and the strength of the pipe pile needs to be enhanced through high-pressure steam curing, which requires a large amount of steam, and the energy consumption in the production process is high; the investment in the autoclave is large, the maintenance cost is high, and there are potential safety hazards; After high-temperature autoclaved curing, the durability of concrete decreases, which has an adverse effect on the long-term service capacity of pipe piles

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