CN114214936B - A carbon fiber cable with good anchoring effect and uniform force - Google Patents

Abstract

The carbon fiber inhaul cable with good anchoring effect and even stress comprises an anchor cup, an inhaul cable and an anchoring assembly. The anchor cup is provided with an anchor hole, and the anchor hole comprises an inlet and an outlet. The inhaul cable is formed by bundling a plurality of carbon fiber rods. The anchoring assembly comprises a wire dividing plate, a bushing, a wedge nail and an anchoring material. The wire dividing plate is provided with the perforation, and a circle of chamfer is arranged at the port of the perforation facing one end of the bushing. One end of the bushing cone is arranged towards the wire dividing plate and is arranged in the chamfer, so that the bushing can be fixed, the bushing can better clamp the carbon fiber rods, and the stress of each carbon fiber rod is ensured to be uniform. The wedge nail is wedged from one end of the carbon fiber rod, which is positioned at the outlet, so that the carbon fiber rod is propped open at one end of the outlet, and the carbon fiber rod and the anchoring material are firmly connected.

Description

A carbon fiber cable with good anchoring effect and uniform force

Technical field

The invention relates to the technical field of bridge carbon fiber cables, and in particular to a carbon fiber cable with good anchoring effect and uniform stress.

Background technique

As bridge structures develop towards ultra-large spans, due to the large proportion of steel, the use of traditional steel cables will face problems such as limited ultimate span, large cable sag, and low load-bearing efficiency. The cables have to serve under high stress conditions for a long time. Stress corrosion is prone to occur, causing serious corrosion of the steel wires in the main cables and stay cables. At present, the strength level of steel wires used in bridge cables has reached 2100MPa. Due to the limitations of the steel and anchoring materials themselves, the improvement in the strength of the steel wire cables has also reached its limit. The weight of carbon fiber cable material is only about 1/5 of steel wire, the tensile strength can reach 3000MPa, and it has excellent properties such as corrosion resistance and fatigue resistance. It is very suitable for replacing traditional steel cables. It can fundamentally solve the replacement and safety hazard problems caused by traditional cables being prone to corrosion and vibration fatigue. Replacing steel cables with carbon fiber cables is of great significance to improving the load-bearing capacity of the cables and reducing the economic indicators of long-span cable-bearing bridges.

However, most of the carbon fiber rods in the cable anchors in the prior art are fan-shaped. For example, the patent number is CN202120829005.0, which discloses a carbon fiber cable cold-cast anchoring structure. The carbon fiber composite ropes in the patented anchor are in a fan-shaped shape. The taper diverges and is secured with anchor plates. When only subjected to axial force, there is no problem with the carbon fiber composite material itself. However, when the carbon fiber rods fan out, they will bend and the carbon fiber rods will need to withstand multi-directional stress, which can easily cause stress on the carbon fiber rods in the anchorage. The uneven phenomenon will lead to poor anchoring effect if only fixed by the anchor plate, which may easily lead to cable anchor failure.

Contents of the invention

In view of this, the present invention provides a carbon fiber cable with good anchoring effect and uniform force to solve the above technical problems.

A carbon fiber cable with good anchoring effect and uniform stress, which includes an anchor cup, a cable arranged in the anchor cup, and an anchoring component arranged in the anchor cup. The anchor cup is provided with There is an anchor hole penetrating the anchor cup. The anchor hole includes an inlet provided at one end of the anchor cup, and an outlet provided at the other end of the anchor cup and located on the opposite side of the inlet. The cable is composed of a plurality of carbon fiber rods arranged and bundled along its length direction. The anchor assembly includes a filament plate arranged in the anchor hole, and a plurality of bushings set on the carbon fiber rods. A plurality of wedge pins are provided on the carbon fiber rods, and anchoring materials are poured into the anchor holes. A plurality of perforations are evenly provided on the filament plate, and the plurality of carbon fiber rods are respectively penetrated through a plurality of holes. The anchor hole is provided with a round chamfer toward the port at one end of the bushing. The bushing is set on the carbon fiber rod. One end of the bushing is conical and the other end is horizontal. One end of the cone of the bushing faces the filament plate and is arranged in the chamfer. The wedge pin is wedged from the end of the carbon fiber rod located at the outlet, and the tip of the wedge pin is in contact with the One end of the bushing that is set horizontally is flush.

Further, the diameter of the inlet is larger than the diameter of the outlet, and the anchor hole is truncated and trapezoidal in cross-section along the axis of the anchor cup.

Further, the bushing is cylindrical and is provided with a bushing through hole penetrating the bushing, and the carbon fiber rod passes through the bushing through hole.

Further, after the plurality of carbon fiber rods extend into the anchor hole from the inlet, they are dispersed radially one by one.

Furthermore, the outer wall of the bushing is provided with multiple grooves, and the anchoring material is engaged with the grooves.

Compared with the prior art, the carbon fiber cable provided by the present invention has good anchoring effect and uniform stress. Each of the carbon fiber rods is covered with a bushing, and one end of the bushing is conically arranged toward The filament plate is disposed in the chamfer, thereby fixing the bushing so that the bushing can better hold the carbon fiber rod. And ensure that the force of each carbon fiber rod is uniform, thereby improving the static load performance and fatigue performance of the carbon fiber rod. At the same time, the bushing is fit with the filament plate, and the bushing can better transfer the load to the filament plate. The anchoring material is between the carbon fiber rod and the carbon fiber rod after being extruded as a whole. The friction force is improved, thereby further improving the overall load-bearing capacity. The outer wall of the bushing is provided with multiple rings of grooves, and the anchoring material can flow into the grooves and engage with the grooves after solidification, thereby making the bushing unable to move and improving stability and anchorage. Effect. The wedge pin is wedged from the end of the carbon fiber rod located at the outlet, and the tip of the wedge pin is flush with the horizontally arranged end of the bushing, so that the end of the carbon fiber rod located at the outlet is Spread out to make the connection between the carbon fiber rod and the anchoring material stronger.

Description of drawings

Figure 1 is a cross-sectional view of a bar provided by the present invention for a carbon fiber cable with good anchoring effect and uniform stress.

Figure 2 is an enlarged schematic diagram of position A of the carbon fiber cable in Figure 1 with good anchoring effect and uniform stress.

Detailed ways

Specific embodiments of the present invention are described in further detail below. It should be understood that the description of the embodiments of the present invention here is not intended to limit the protection scope of the present invention.

As shown in Figures 1 to 2, they are schematic structural diagrams of the carbon fiber cable with good anchoring effect and uniform stress provided by the present invention. The carbon fiber cable with good anchoring effect and uniform force includes an anchor cup 10 , a cable 20 disposed in the anchor cup, and an anchoring component 30 disposed in the anchor cup 10 . It is conceivable that the carbon fiber cable with good anchoring effect and uniform force also includes other functional modules, such as assembly components, clips, sealing components, etc., which are techniques well known to those skilled in the art. , which will not be described in detail here.

The anchor cup 10 is provided with an anchor hole 11 penetrating the anchor cup 10 . The anchor hole 11 includes an inlet 111 provided at one end of the anchor cup 10 and an inlet 111 provided at the other end of the anchor cup 10 . and is located at the outlet 112 on the opposite side of the inlet 111 . The diameter of the inlet 111 is larger than the diameter of the outlet 112, so that the anchor hole 11 has a truncated cone shape and a trapezoidal shape in the axial cross-section along the anchor cup 10, thereby facilitating the passage of the cable 20 from there. The entrance 111 extends into the anchor hole 11 and is dispersed.

The cable 20 is composed of a plurality of carbon fiber rods 21 arranged and bundled along its length direction. After the plurality of carbon fiber rods 21 extend into the anchor hole 11 from the inlet 111 , they are dispersed radially one by one and pass through the anchor assembly 30 for anchoring.

The anchor assembly 30 includes a filament plate 31 disposed in the anchor hole 11 , a plurality of bushings 32 disposed on the carbon fiber rod 21 , and a plurality of wedges disposed on the carbon fiber rod 21 . Nails 33, and anchoring material 34 poured into the anchor hole 11.

The filament plate 31 is embedded and fixed in the anchor hole 11. The filament plate 31 is evenly provided with a plurality of the through holes 311 and the plurality of carbon fiber rods 21 are respectively passed through the plurality of holes. Regarding the anchor hole 11 , it is conceivable that anchor components such as clips should be provided between the anchor hole 11 and the carbon fiber rod 21 , which itself is an existing technology and will not be described again here. The through hole 311 is provided with a chamfer 312 toward the port at one end of the bushing 32 , and the chamfer 312 is used to better position the bushing 32 .

The bushing 32 is cylindrical and is provided with a bushing through hole 321 penetrating the bushing 32. The carbon fiber rod 21 passes through the bushing through hole 321, so that the bushing 32 is sleeved on the bushing. On the carbon fiber pole 21. Each carbon fiber rod 21 is covered with the bushing 32, and the bushing 32 can clamp the carbon fiber rod 21 to ensure that the force of each carbon fiber rod 21 is uniform, thereby improving the overall performance of the carbon fiber rod 21. The static load performance and fatigue performance of the carbon fiber rod 21 are described. One end of the bushing 32 is conically arranged, and the other end is set horizontally. The conical end of the bushing 32 faces the splitting plate 31 and is arranged in the chamfer 312, so that the bushing 32 can be further fixed. This allows the bushing 32 to better hold the carbon fiber rod 21 . At the same time, the bushing 32 fits the filament plate 31 so that when the carbon fiber rod 21 bears a load, the load on the carbon fiber rod 21 will be transmitted to the bushing 32, and the bushing 32 can better transfer the load to the splitting plate 31, and the splitting plate 31 then transfers the load to the entire anchoring material 34. The anchoring material 34 withstands the overall extrusion and the The friction between the carbon fiber rods 21 is improved, thereby further improving the overall load-bearing capacity. The outer wall of the bushing 32 is provided with multiple rings of grooves 322. When the anchoring material 34 is poured, the anchoring material 34 can flow into the grooves 322 and engage with the grooves 322 after solidification. , thereby making the bushing 32 unable to move and improving stability and anchoring effect.

The wedge pin 33 is wedged from the end of the carbon fiber rod 21 located at the outlet 112, and the tip of the wedge pin 33 is flush with the horizontally disposed end of the bushing 32, so that the carbon fiber rod 21 is located at the outlet 112. One end of the outlet 112 is opened to make the connection between the carbon fiber rod 21 and the anchoring material 34 stronger. At the same time, because the tip of the wedge pin 33 is flush with the horizontal end of the bushing 32 , the expanded portion of the carbon fiber rod 21 will not affect the bushing 32 .

Compared with the prior art, the carbon fiber cable provided by the present invention has good anchoring effect and uniform stress. Each of the carbon fiber rods 21 is covered with a bushing 32, and the bushing 32 is conically arranged. One end faces the splitting plate 31 and is arranged in the chamfer 312, so that the bushing 32 can be fixed, so that the bushing 32 can better clamp the carbon fiber rod 21. And ensure that each carbon fiber rod 21 is stressed uniformly, thereby improving the static load performance and fatigue performance of the carbon fiber rod 21 . At the same time, the bushing 32 fits the splitting plate 31, and the bushing 32 can better transfer the load to the splitting plate 31. The anchoring material 34 withstands the overall extrusion and is connected to the splitting plate 31. The friction between the carbon fiber rods 21 is improved, thereby further improving the overall load-bearing capacity. The outer wall of the bushing 32 is provided with multiple rings of grooves 322. The anchoring material 34 can flow into the grooves 322 and engage with the grooves 322 after solidification, so that the bushing 32 cannot move. , improve stability and anchoring effect. The wedge pin 33 is wedged from the end of the carbon fiber rod 21 located at the outlet 112, and the tip of the wedge pin 33 is flush with the horizontally disposed end of the bushing 32, so that the carbon fiber rod 21 is located at the outlet 112. One end of the outlet 112 is opened to make the connection between the carbon fiber rod 21 and the anchoring material 34 stronger.

The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions or improvements within the spirit of the present invention are covered by the claims of the present invention.

Claims (5)

1. The utility model provides a effectual and even carbon fiber cable of atress of anchor which characterized in that: the carbon fiber inhaul cable with good anchoring effect and even stress comprises an anchor cup, a inhaul cable arranged in the anchor cup and an anchoring assembly arranged in the anchor cup, wherein the anchor cup is provided with an anchor hole penetrating through the anchor cup, the anchor hole comprises an inlet arranged at one end of the anchor cup and an outlet arranged at the other end of the anchor cup and positioned at the opposite side of the inlet, the inhaul cable is formed by arranging and bundling a plurality of carbon fiber rods along the length direction of the inhaul cable, the anchoring assembly comprises a wire dividing plate arranged in the anchor hole, a plurality of bushings arranged on the carbon fiber rods, a plurality of wedge nails arranged on the carbon fiber rods and anchoring materials poured in the anchor hole, a plurality of perforations are evenly arranged on the wire dividing plate and respectively penetrate through the anchor holes, a circle of chamfer is arranged at one end of the bushing, the sleeve is sleeved on the carbon fiber rods, the wedge nails are arranged at one end of the taper sleeve, the taper sleeve is horizontally arranged at one end of the taper sleeve, and the taper sleeve is horizontally arranged at one end of the taper sleeve.

2. The carbon fiber inhaul cable with good anchoring effect and uniform stress according to claim 1, wherein: the diameter of the inlet is larger than that of the outlet, and the anchor hole is in a truncated cone shape and is trapezoid on the axial section along the anchor cup.

3. The carbon fiber inhaul cable with good anchoring effect and uniform stress according to claim 1, wherein: the bushing is cylindrical and is provided with a bushing perforation penetrating through the bushing, and the carbon fiber rod penetrates through the bushing perforation.

4. The carbon fiber inhaul cable with good anchoring effect and uniform stress according to claim 1, wherein: and after the carbon fiber rods extend into the anchor holes from the inlet, the carbon fiber rods are dispersed radially one by one.

5. The carbon fiber inhaul cable with good anchoring effect and uniform stress according to claim 1, wherein: the outer side wall of the bushing is provided with a plurality of circles of grooves, and the anchoring material is meshed with the grooves.