Fabric reinforced concrete - steel tube - FRP composite pipe and manufacturing method thereof

Abstract

The invention discloses a fabric reinforced concrete - steel tube - FRP composite pipe and a manufacturing method thereof. The composite pipe comprises an FRP round pipe, a thin-wall steel pipe and fabric reinforced concrete, wherein the FRP circular pipe, the thin-wall steel pipe and the fabric reinforced concrete are coaxially arranged from inside to outside, and fine-grain concrete is poured between the FRP round tube and the thin-wall steel tube; and the outer surface of a joint is provided with a steel sleeve ring through a shear stud, and a sealing rubber gasket is arranged below the steel sleeve ring. According to the fabric reinforced concrete - steel tube -FRP composite pipe, an inner layer of the pipe adopts a resin fiber reinforced material, and has the advantages of corrosion resistance, fatigue resistance, light weight and the like, the formed inner wall of the pipe is smooth, so that microorganisms are not grown, the water passing amount is large, the service life is long, and the later maintenance cost is reduced; due to the fact that the steel pipe is adopted in a middle interlayer, so that the composite pipe has higher pressure-bearing capacity and greater rigidity; and the outer-layer fabric reinforced concrete has a further restriction effect on the inner steel tube and the FRP, so that the pressure-bearing capacity and the pressure resistance ability of thepipe are further enhanced; and moreover, the fabric reinforced concrete has good corrosion resistance and impermeability, so that the service life of the pipe is longer.

Description

technical field [0001] The invention relates to a fabric-reinforced concrete-steel pipe-FRP composite pipe and a manufacturing method thereof, belonging to the technical field of pipe materials. Background technique [0002] With the continuous development of cities and the continuous improvement of environmental protection requirements, buried water pipelines, drainage and sewage pipelines are widely used in urban underground pipe networks. The traditional reinforced concrete pipe wall is relatively rough, and it is easy to adhere to the polluting liquid. Long-term use will reduce the flow area of ​​the pipe and increase the resistance between the liquids. In addition, concrete pipelines are prone to water seepage, poor sealing, and prone to corrosion problems during use, and the corrosion method is chronic corrosion, which is not easy to be discovered by inspectors. Another type of stress corrosion cracking is to make the pipeline under corrosion, tension When the stress ...

AI Technical Summary

Problems solved by technology

However, during the use of this kind of composite pipe, due to the effect of the vehicle load, the buried pipe may cause cracks or increase the cracks of the composite pipe due to excessive pressure, which will affect the normal use of the pipe, and then affect people's daily life.

In addition, this kind of pipe is also prone to technical problems such as corrosion problems, poor corrosion resistance, and short service life.

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