CN216765579U

CN216765579U - Combined type prestress stay cable of carbon fiber stranded wire and steel stranded wire

Info

Publication number: CN216765579U
Application number: CN202122570760.4U
Authority: CN
Inventors: 黄金; 白石
Original assignee: Intellectual Fiber Composite Reinforcement Nantong Co ltd
Current assignee: Intellectual Fiber Composite Reinforcement Nantong Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-06-17
Anticipated expiration: 2031-10-25

Abstract

The utility model discloses a combined type prestress stay cable of a carbon fiber stranded wire and a steel stranded wire, which comprises the carbon fiber stranded wire and the steel stranded wire, wherein two ends of the carbon fiber stranded wire are connected with the steel stranded wire through an anchoring structure, the anchoring structure comprises an anchoring body, a glue filling cavity is arranged in the middle of the anchoring body, the glue filling cavity is communicated with a glue filling hole in the surface of the anchoring body, one end of the anchoring body is provided with a first channel for the steel stranded wire to be inserted into and communicated with the glue filling cavity, the other end of the anchoring body is provided with a second channel for the carbon fiber stranded wire to be inserted into and communicated with the glue filling cavity, and epoxy structural glue is injected into the glue filling cavity. According to the combined type prestress inhaul cable of the carbon fiber stranded wires and the steel stranded wires, the two ends of the carbon fiber stranded wires are anchored with the steel fibers, so that the whole inhaul cable not only can solve the problem of insufficient durability of the bridge inhaul cable, but also can realize reliable anchoring.

Description

Combined type prestress stay cable of carbon fiber stranded wire and steel stranded wire

Technical Field

The utility model relates to a bridge inhaul cable, in particular to a combined type prestress inhaul cable of a carbon fiber stranded wire and a steel stranded wire.

Background

For bridges such as large-span cable-stayed bridges and suspension bridges, the stay cable is a crucial stressed bearing part in the structural system of the bridge. In the service period, the parts are not only in a high stress state for a long time, but also are full of the action of a severe service environment, so that the phenomena of fatigue, corrosion, even failure and the like are very common, the normal service capability of the infrastructure is seriously influenced, the service life is shortened, and serious direct and indirect economic losses are possibly brought, and great social influence is caused. Therefore, in order to prolong the service life of the cable and ensure the safety of the cable, safe and effective measures are required to reduce the corrosion damage degree of the cable.

The Fiber Reinforced Polymer (FRP) rib is a novel composite material formed by drawing and forming and necessary surface treatment by taking Fiber as a reinforcing material and resin as a base material. It has the excellent performances of high strength, light weight, no corrosion, corrosion resistance, fatigue resistance, good damping performance and the like. If the carbon fiber cable is manufactured into a cable, the carbon fiber with the highest performance is required to be adopted, the carbon fiber material is manufactured into the carbon fiber stranded wire by the current research technology, the carbon fiber stranded wire can replace a steel stranded wire to become a stress part of the cable, the super tensile property, the fatigue resistance and the corrosion resistance of the cable can be fully exerted, the durability of the structure is greatly improved, the maintenance cost of the structure in the operation period is reduced, and the problem of insufficient durability of the bridge cable can be fundamentally solved.

But the carbon fiber stranded wire also has the characteristics of the carbon fiber stranded wire, the carbon fiber stranded wire is an anisotropic material, the tensile strength of the carbon fiber stranded wire is up to more than 2000Mpa, the radial compressive strength and the shearing strength between fiber layers in the tendon are low, and the elongation is small; because the radial compressive strength of the carbon fiber stranded wire and the shearing strength between fiber layers in the tendon are low, the carbon fiber stranded wire is used as a bridge inhaul cable, the reliable anchoring of the inhaul cable is difficult to realize, and the existing carbon fiber stranded wire cannot be widely used as the bridge inhaul cable.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides the combined type prestress stay cable of the carbon fiber stranded wire and the steel stranded wire, wherein a section of steel fiber is anchored at the two ends of the carbon fiber stranded wire, so that the problem of insufficient durability of the bridge stay cable can be solved, and the reliable anchoring can be realized.

The utility model discloses a combined type prestress stay cable of a carbon fiber stranded wire and a steel stranded wire, which comprises the carbon fiber stranded wire and the steel stranded wire, wherein two ends of the carbon fiber stranded wire are connected with the steel stranded wire through an anchoring structure, the anchoring structure comprises an anchoring body, a glue filling cavity is arranged in the middle of the anchoring body, the glue filling cavity is communicated with a glue filling hole in the surface of the anchoring body, a first channel for the steel stranded wire to insert is formed in one end of the anchoring body and communicated with the glue filling cavity, a second channel for the carbon fiber stranded wire to insert is formed in the other end of the anchoring body and communicated with the glue filling cavity, and epoxy structural glue is injected into the glue filling cavity.

Preferably, the steel strand is inserted into the first channel, the end part of the steel strand extends into the glue filling cavity, and the extending length is greater than 10 cm.

Preferably, the carbon fiber stranded wire is inserted into the second channel, the end part of the carbon fiber stranded wire extends into the glue filling cavity, and the extending length is larger than 10 cm.

Preferably, the carbon fiber stranded wire is sleeved with the aluminum sleeve and then inserted into the second channel.

Preferably, the epoxy structural adhesive is mixed with reduced iron powder, and the mesh number of the reduced iron powder is 100-200 meshes.

Preferably, the length of the steel strand is 0.5-1 m.

The utility model has the beneficial effects that: the utility model provides a combination formula prestressing force cable of carbon fiber strand wires and steel strand wires, has following beneficial effect:

the main structure of the whole stay cable adopts the carbon fiber stranded wire, so that the stay cable has the performances of corrosion resistance, fatigue resistance, high strength and the like;

the two ends of the stay cable are connected with steel strands, and the excellent anchoring performance of the steel strands is utilized to realize the anchoring of the stay cable and the anchoring part on the bridge in a stretching state, so that the anchoring reliability of the whole stay cable is ensured;

for anchoring between the carbon fiber stranded wires and the steel stranded wires, a combined form of mechanical extrusion connection and glue pouring bonding is adopted, so that the anchoring efficiency coefficient is improved;

the whole inhaul cable is good in durability and reliable in anchoring performance.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is an overall schematic diagram of an embodiment of the present invention;

fig. 2 is a detailed schematic diagram of an anchoring structure in an embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

According to the combined prestressed stay cable of the carbon fiber stranded wires and the steel stranded wires, the carbon fiber stranded wires and the steel stranded wires are anchored and combined to form the combined stay cable, the problem that the carbon fiber stranded wires cannot be anchored reliably in a stretching state is solved, the problem that the steel stranded wires are poor in durability is also solved, the combined prestressed stay cable is structurally shown in figures 1-2, the combined prestressed stay cable comprises the carbon fiber stranded wires 1, the steel stranded wires 2 and an anchoring structure 3, the two ends of the carbon fiber stranded wires are connected with the steel stranded wires through the anchoring structures, the length of the steel stranded wires is 0.5-1 m, and the length of the steel stranded wires is controlled so that effective anchoring can be achieved, and the durability of the whole stay cable cannot be reduced due to overlong.

Specifically speaking, the anchor structure includes anchor 4, this anchor's centre is equipped with encapsulating cavity 6, supply steel strand wires male first passageway 9 has been seted up to anchor's one end, this first passageway intercommunication encapsulating cavity, steel strand wires inserts first passageway, make its tip extend to in the encapsulating cavity, second passageway 10 intercommunication encapsulating cavity has been seted up to anchor's the other end simultaneously, carbon fiber strand wires insert in the second passageway, its tip extends to in the encapsulating cavity, utilize the extruder to extrude anchor both ends, make steel strand wires compressed tightly in first passageway, carbon fiber strand wires are compressed tightly in the second passageway, in order to promote the pull-out force of carbon fiber strand wires and second passageway, insert the second passageway after suit aluminium sleeve 5 on carbon fiber strand wires.

The encapsulating cavity communicates with encapsulating hole 8 on anchor assembly surface, pours into epoxy structure through the encapsulating hole and glues 7 in to the encapsulating cavity, thereby bond anchor with carbon fiber strand wires, for promoting bonding anchoring performance, the control steel strand wires is not less than 10cm with the depth of insertion of carbon fiber strand wires in the encapsulating cavity, increase and protect the area of contact that the epoxy structure glued, promote bonding anchoring performance, the mesh of mixing is 100 ~ 200 mesh reduction iron powder in epoxy structure glues simultaneously, with increase frictional force, promote bonding strength.

Because the radial compression strength of the carbon fiber stranded wire and the shearing strength between fiber layers in the tendon are low, the carbon fiber stranded wire is difficult to realize reliable anchoring in a stretching state, the carbon fiber stranded wire and the steel stranded wire are anchored before assembly (namely in a non-stretching state), the reliable anchoring of the carbon fiber stranded wire and the steel stranded wire is realized by using an anchoring mode of combining machinery and glue pouring, and when the inhaul cable is assembled on site, the steel stranded wire and the anchoring part on the bridge are only required to be anchored in the stretching state, so that the reliable anchoring is realized.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. The utility model provides a combination formula prestressing force cable of carbon fiber strand wires and steel strand wires which characterized in that: including carbon fiber strand wires and steel strand wires, the steel strand wires are connected through the anchor structure in carbon fiber strand wires's both ends, the anchor structure includes the anchor body, and the centre of this anchor body is equipped with the encapsulating cavity, and this encapsulating cavity communicates with the encapsulating hole on anchor assembly surface, and the one end of the anchor body is seted up and is supplied steel strand wires male first passageway intercommunication encapsulating cavity, and the other end of the anchor body is seted up and is supplied carbon fiber strand wires male second passageway intercommunication encapsulating cavity, pour into epoxy structure in the encapsulating cavity and glue.

2. The combined prestressed stay cable of claim 1, wherein: the steel strand is inserted into the first channel, the end part of the steel strand extends into the glue pouring cavity, and the extending length is larger than 10 cm.

3. The combined prestressed stay cable of claim 1, wherein: the carbon fiber stranded wire is inserted into the second channel, the end part of the carbon fiber stranded wire extends into the glue filling cavity, and the extending length of the carbon fiber stranded wire is larger than 10 cm.

4. The combined prestressed stay cable of claim 1, wherein: and the carbon fiber stranded wire is sleeved with the aluminum sleeve and then inserted into the second channel.

5. The combined prestressed stay cable of carbon fiber strand and steel strand as claimed in claim 1, wherein: the length of the steel strand is 0.5-1 m.