Anchor device for changing direction of carbon fiber plate

Abstract

The invention discloses an anchor device for changing the direction of a carbon fiber plate. The invention aims at providing the anchor device for changing the direction of the carbon fiber plate. The anchor device comprises a bottom plate, and is characterized in that one end of the bottom plate is provided with an open groove; each of the two ends in the groove is provided with a direction changing pad block; a direction changing pad block with press block screws is arranged above an open end pad block; the other end of the bottom plate is provided with a press plate, a cover plate and tensioning device installing holes; the press plate is positioned between the bottom plate and the cover plate; the cover plate, the press plate and the bottom plate are connected into a whole through connecting screws; jacking screws are also arranged on the cover plate; and the jacking screws pass through the cover plate and are movably connected with the press plate in a pressed way. Each direction changing pad block is a tetrafluoroethylene direction changing pad block. The anchor device is mainly used for changing the direction of the carbon fiber plate.

Description

technical field [0001] The invention relates to an anchor, in particular to an anchor used for steering a carbon fiber plate. Background technique [0002] With the rapid development of today's society, the requirements for the bearing capacity and fatigue resistance of old concrete components are getting higher and higher. In order to prolong the service life of concrete components, materials with high bonding strength and small volume self-weight are generally used for concrete bottom components. Prestressed reinforcement, so as to restrain the generation and development of transverse cracks, improve its bearing capacity and service life. Carbon fiber plate is a new material for engineering structure reinforcement with high tensile strength (2400MPa), elastic modulus close to that of steel, and light weight. Due to the excellent performance of carbon fiber plates, it has been widely used in structural reinforcement and reconstruction projects, but the elongation of carbon...

AI Technical Summary

Problems solved by technology

The four anchor bolts of this design are very concentrated, so the stress at the end will be quite concentrated during tension, and there is a risk that the concrete will be damaged and collapsed.

[0006] 2. The positions of the 4 anchor bolts are also fixed. When drilling holes encounter steel bars or steel strands in concrete components, they cannot be adjusted, and can only drill through steel bars or steel strands, which is very unfavorable to the structure.

[0007] 3. It is necessary to groove the surface of the concrete member and embed half of the anchor into the concrete so that the carbon fiber plate can be close to the surface of the concrete member. The steel bars are cut off, thus causing damage to the original structure

If it is not turned, the carbon fiber plate will have a certain distance from the surface of the concrete component, and the amount of carbon fiber glue will be large, which will greatly reduce the economy

[0008] 4. After the construction is completed, the tie rods will remain on the concrete components, the appearance looks very complicated, there are many parts, and there are high anti-corrosion requirements

[0009] 5. Due to the needs of installation, the bolt hole of the support at the anchorage end will be larger than the diameter of the bolt due to tension, and there will be a certain error in manual installation, which will cause the stress concentration problem of a single anchor bolt, and there is a risk of the anchor bolt being sheared

In this way, it is necessary to wait until the structural adhesive is completely cured before releasing the tensioning device, which greatly limits the continuous construction.

The deployment and quality of the structural adhesive determine the anchoring effect, and there is a problem of prestress relaxation caused by the aging of the structural adhesive

[0012] 2. The anchors are also fixed on the concrete components with relatively concentrated anchor bolts, which brings the risk of stress concentration, concrete damage and collapse, and the risk of a single anchor bolt being cut

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