FRP (Fiber Reinforced Polymer) rib pipe and manufacturing method thereof

Abstract

The invention discloses an FRP (Fiber Reinforced Polymer) rib pipe. The FRP rib pipe comprises an FRP impregnated fiber forming pipe, a plurality of FRP longitudinal ribs and a double-wall sleeve, wherein a longitudinal rib cylinder is defined by the plurality of FRP longitudinal ribs, every two adjacent longitudinal rib cylinders are connected through the double-wall sleeve, the longitudinal rib cylinders are installed on the inner wall of the FRP impregnated fiber forming pipe, the ends, far away from the double-wall sleeve, of the longitudinal rib cylinders are flush with the FRP impregnated fiber forming pipe, and the FRP impregnated fiber forming pipe is connected with the double-wall sleeve. According to the FRP rib pipe, the overall rigidity and lateral resistance can be greatly improved, and the FRP rib pipe is combined with a steel pipe and concrete, so that the ultimate bearing capacity of a combined structure column can be greatly improved, and the performance of FRP materials is fully exerted.

Description

technical field [0001] The invention relates to the technical fields of construction engineering technology and composite materials, in particular to FRP tendon pipes and a manufacturing method thereof. Background technique [0002] With the wide application of reinforced concrete in structural engineering, various engineering problems have appeared in high-rise, heavy-duty and long-span fields, such as corrosion of steel bars, shortage of fresh water and river sand resources, etc. At the same time, ocean engineering and offshore The development needs of buildings restrict the further expansion of reinforced concrete. At the same time, with the emergence and rapid development of new materials, such as fiber-reinforced polymer (FRP) has excellent properties such as light weight, high strength, good tensile performance, corrosion resistance, electromagnetic resistance, and excellent designability. It meets the industrialization requirements of modern construction technology, ...

AI Technical Summary

Problems solved by technology

Among them, the FRP pipe filled with concrete has strong durability, corrosion resistance and good compressive performance at room temperature, but because the FRP pipe is hoop-wound, if there is no FRP longitudinal reinforcement, its resistance to lateral force is poor, and the member is prone to buckling , make it enter the failure stage in advance, and the FRP pipe cannot fully exert its excellent tensile properties

However, there is no mature, efficient and stable preparation process for FRP tendon tubes at present, and often due to the large number of connection points of FRP longitudinal reinforcement and the construction personnel still need to carry out manual operations with low precision based on personal experience, due to complicated operations, large quantities and The quality of the finished product is difficult to be guaranteed due to experience and human nature, and the low efficiency of the preparation process makes it difficult to quickly start the construction of FRP reinforced pipes

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