A method for connecting fiber-reinforced composite tendons

A composite material and fiber-reinforced technology, which is applied in the connection field of fiber-reinforced composite material ribs, can solve the trouble of winding roving, it is difficult to meet the problems of quickness and simplicity, and achieve the effect of reliable performance, convenient construction and enhanced connection performance
CN109955488BActive Publication Date: 2021-04-06SOUTHEAST UNIV
13 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2021-04-06

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for connecting fiber-reinforced composite material (FRP) tendons, which uses a shuttle-shaped outer sleeve to connect two FRP tendons through the dual functions of thread mechanical engagement and gluing, and makes them jointly stressed in concrete . The main features of this invention are as follows: firstly, a cylindrical connection sleeve of composite material prepared by mixing FRP material and thermoplastic epoxy resin is produced, and after the thermosetting resin is poured into the sleeve, two FRP bars are inserted into the sleeve one after another for docking. Finally, the sleeve and FRP bars are heated and pressurized through a mold with a special shape, so that the thermoplastic resin of the sleeve material is softened and pressed into a shuttle shape in the mold. This shape is conducive to reducing stress concentration. After curing The overall performance of the Sleeve‑FRP bars is superior. The invention is used for the connection of FRP bars in concrete structures (beams, columns, etc.), and has the characteristics of convenient construction, small butt joint length and high strength, and can ensure effective butt joint between FRP bars in concrete.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of connection of fiber-reinforced composite bars in concrete structures in the fields of civil engineering and transportation. Background technique

[0002] Fiber Reinforced Polymer (FRP) has the advantages of high strength, light weight, corrosion resistance and fatigue resistance. FRP reinforcement is a composite material formed by fiber yarn impregnated with resin in a certain proportion and formed by pultrusion process. It is an ideal substitute for steel bars in civil engineering applications. It has been used in bridges, hydraulic structures, seaports, and reinforcement projects. .

[0003] Although FRP bars have broad prospects in the field of civil engineering, there are still some problems when they are used as a substitute for steel bars in concrete structures. FRP tendons used in concrete structures, once their diameter exceeds 14mm, are difficult to be transported in coils and must be cut. Mor...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More