CN217734007U

CN217734007U - Recoverable anchor rope of combined type CFRP

Info

Publication number: CN217734007U
Application number: CN202221776512.3U
Authority: CN
Inventors: 左一泽; 李静; 范昕; 关帅; 刘越; 王晶; 赵乾辰
Original assignee: Beijing University of Technology; China Construction First Group Construction and Development Co Ltd
Current assignee: Beijing University of Technology; China Construction First Group Construction and Development Co Ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-11-04
Anticipated expiration: 2032-07-11

Abstract

The utility model relates to a technical field that anchor structural component or dado were used discloses a recoverable anchor rope of combined type CFRP, including burying underground the self-unblock anchor head in the anchorage, still include one end insert establish from the unblock anchor head in and the other end pass through the steel strand wires that cable body connector and CFRP stranded conductor are connected, cable body connector buries underground in the anchorage, the CFRP stranded conductor is outside the anchorage has been extended to from cable body connector. In the utility model, a section of steel strand is connected to the end part of the existing CFRP strand by the cable body connector, and the steel strand is inserted into the anchor head, so that the existing CFRP strand can be matched with various existing self-unlocking anchor heads for use, and the special self-unlocking anchor head is not needed; meanwhile, the CFRP stranded wire cannot rust even if being positioned in the stratum, and the steel stranded wire and the cable body connector are both positioned in the anchor and cannot rust, so that the whole anchor cable can be completely recycled and recycled.

Description

Recoverable anchor rope of combined type CFRP

Technical Field

The utility model relates to a device technical field that anchor structural component or dado were used especially relates to a recoverable anchor rope of combined type CFRP.

Background

An anchor cable is a commonly used supporting device, and one end of the anchor cable is fixed in a fixed foundation such as an anchorage through an anchor head. Conventional anchor lines are steel cables which are left permanently in the formation after the project is completed.

However, this presents two problems: on one hand, the corrosion of the reinforcement material pollutes the underground environment; on the other hand, the anchor rods need to be arranged along the periphery of the foundation pit in an outward radiation mode, and are easy to conflict with peripheral pipelines and buildings, so that hidden dangers are left for subsequent engineering construction. Therefore, various types of recoverable steel anchor cables have been developed in the geotechnical anchoring engineering industry at home and abroad, the connection between the steel anchor cables and the anchor head is detachable, and the anchor cables can be taken down from the anchor head after the use.

However, steel is subject to corrosion, the steel cable is mostly in the ground during the use of the cable, and corrosion occurs during the period before the cable is taken out, so that the cable body is difficult to continue to be used after being taken out. These problems can be effectively solved by using CFRP (Carbon Fiber Reinforced Polymer). However, CFRP is anisotropic and weak in shear resistance, and cannot adopt a clip type anchoring system commonly used in steel anchor cables, which limits the application of CFRP cables in engineering.

SUMMERY OF THE UTILITY MODEL

The utility model provides a recoverable anchor rope of combined type CFRP.

The technical problem to be solved is that: the existing recoverable anchor cable is a steel cable which is difficult to continue to use after being taken out due to corrosion during use, while the CFRP cable cannot be rusted but cannot be matched with the existing self-unlocking anchor head for use.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a recoverable anchor rope of combined type CFRP, includes the self-unlocking anchor head of burying underground in the anchorage, still includes that one end is inserted and is established in the self-unlocking anchor head and the other end passes through the steel strand wires that cable body connector and CFRP stranded conductor are connected, cable body connector buries underground in the anchorage, CFRP stranded conductor extends outside the anchorage from cable body connector.

Further, recoverable anchor rope of CFRP is still including being used for avoiding steel strand wires and CFRP stranded conductor by the antiseized sheath of anchorage holding parcel, antiseized even sheath is the plastic tubing of one end shore on the self-release anchor head, antiseized even sheath is intraductal with steel strand wires, cable body connector and the part cover that the CFRP stranded conductor is arranged in the anchorage from inside to outside in proper order.

Further, an anchoring plate integrally formed with the self-unlocking anchor head is further arranged on the self-unlocking anchor head, and the anchoring plate is perpendicular to the steel strand.

Furthermore, the cable body connector is a compression joint type connector, the compression joint type connector is a sleeve with openings at two ends, the steel strand and the CFRP strand are respectively inserted from two ends of the sleeve and tightly meshed with the inner wall of the sleeve, and a partition board used for separating the steel strand and the CFRP strand is arranged in the middle of the inner side of the sleeve.

Furthermore, the material of the anti-adhesion sheath is flexible PVC, and the anti-adhesion sheath is in clearance fit with the cable body connector.

Furthermore, the gaps between the inner wall of the compression joint type connector and the steel strand and between the inner wall of the compression joint type connector and the CFRP strand are filled with glue for increasing the meshing tightness.

Further, the cable body connector is a bonding connector, the bonding connector is a sleeve with two open ends, the steel strand and the CFRP stranded wire are respectively inserted into the sleeve from two ends of the sleeve and are in clearance fit with the sleeve, thermosetting resin is tightly filled in gaps among the inner wall of the bonding connector, the steel strand and the CFRP stranded wire, and a partition board used for separating the steel strand and the CFRP stranded wire is arranged in the middle of the inner side of the sleeve.

The utility model relates to a recoverable anchor rope of combined type CFRP compares with prior art, has following beneficial effect:

in the utility model, a section of steel strand is connected to the end part of the existing CFRP strand by the cable body connector, and the steel strand is inserted into the anchor head, so that the existing CFRP strand can be matched with various existing self-unlocking anchor heads for use, and the special self-unlocking anchor head is not needed; meanwhile, the CFRP stranded wire cannot rust even if being positioned in the stratum, and the steel stranded wire and the cable body connector are both positioned in the anchor and cannot rust, so that the whole anchor cable can be completely recycled and recycled.

Drawings

Fig. 1 is a schematic structural view of a composite CFRP recoverable anchor cable according to the present invention;

in the figure, 1-self-unlocking anchor head, 2-anchoring plate, 3-cable body connector, 4-steel stranded wire, 5-CFRP stranded wire, 6-anti-adhesion sheath and 7-anchorage.

Detailed Description

As shown in fig. 1, the composite CFRP recoverable anchor cable includes a self-unlocking anchor head 1 embedded in an anchor 7, and further includes a steel strand 4 having one end inserted in the self-unlocking anchor head 1 and the other end connected to a CFRP strand 5 through a cable connector 3, where the cable connector 3 is embedded in the anchor 7, and the CFRP strand 5 extends from the cable connector 3 to the outside of the anchor 7.

The steel strand 4 and the cable body connector 3 are buried in the anchor block 7, so that the steel strand and the cable body connector are prevented from rusting due to direct contact with the ground, and the cable body connector can be used repeatedly. When necessary, sealant can be applied to the position where the CFRP stranded wire 5 penetrates out of the anchor 7 to prevent water in the stratum from permeating along the CFRP stranded wire 5.

The self-unlocking anchor head 1 here can be a threaded connection with counter-rotating threads or a clip connection which can be loosened by rotation. Various self-unlocking anchor heads 1 on the market can be directly used.

The CFRP recoverable anchor cable further comprises an anti-adhesion sheath 6 used for preventing the steel strand 4 and the CFRP strand 5 from being wrapped by the anchor 7, the anti-adhesion sheath 6 is a plastic pipe with one end supported on the self-unlocking anchor head 1, and the steel strand 4, the cable body connector 3 and the part, located in the anchor 7, of the CFRP strand 5 are sequentially sleeved in the pipe from inside to outside through the anti-adhesion sheath 6.

The plastic tube is preferably a clearance fit with the cable connector 3 to avoid the cable connector 3 becoming stuck in the plastic tube during removal of the cable bolt. The material of the anti-adhesion sheath 6 can be flexible PVC commonly used on the field, and the flexible PVC pipe is commonly used in a counter-pulling screw rod.

An anchoring plate 2 which is integrally formed with the self-unlocking anchor head 1 is further arranged on the self-unlocking anchor head 1, and the anchoring plate 2 is perpendicular to the steel strand 4. This increases the firmness of the anchor head.

The cable body connector 3 is a crimping connector, the crimping connector is a sleeve with two open ends, the steel strand 4 and the CFRP strand 5 are respectively inserted from two ends of the sleeve and tightly meshed with the inner wall of the sleeve, and a partition board for separating the steel strand 4 from the CFRP strand 5 is arranged in the middle of the inner side of the sleeve.

Crimp connectors are very common connectors, the inner wall of which is turned with grooves that are aligned with the direction of the strands. And inserting the steel strand 4 and the CFRP strand 5 into two ends of the connector respectively, and placing the connector into an insulator crimping machine for crimping and forming. When necessary, the steel strand 4 and the CFRP strand 5 can be coated with glue and then crimped, so that the gaps between the inner wall of the crimp-type connector and the steel strand 4 and the CFRP strand 5 are filled with glue, and the meshing tightness is increased.

Certainly, in actual use, another type of cable body connector 3 may be used instead, for example, a bonded connector is a sleeve with openings at two ends, the steel strand 4 and the CFRP strand 5 are respectively inserted into the sleeve from two ends of the sleeve and are in clearance fit with the sleeve, the gaps between the inner wall of the bonded connector and the steel strand 4 and between the inner wall of the sleeve and the CFRP strand 5 are both tightly filled with thermosetting resin, and a partition plate for separating the steel strand 4 from the CFRP strand 5 is arranged in the middle of the inner side of the sleeve.

The utility model discloses an installation method is identical with the pure steel anchor rope of conventionality with the dismantlement method, and here is no longer repeated.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a recoverable anchor rope of combined type CFRP, includes self-unlocking anchor head (1) of burying in anchorage (7), its characterized in that: the self-unlocking anchor head is characterized by further comprising a steel strand (4) with one end inserted into the self-unlocking anchor head (1) and the other end connected with the CFRP (carbon fiber reinforced plastics) strand (5) through a cable body connector (3), wherein the cable body connector (3) is buried in the anchor (7), and the CFRP strand (5) extends out of the anchor (7) from the cable body connector (3).

2. The recoverable anchor rope of combined CFRP of claim 1, wherein: recoverable anchor rope of CFRP is still including being used for avoiding steel strand wires (4) and CFRP stranded conductor (5) by antiseized even sheath (6) that anchor (7) were held, antiseized even sheath (6) are the plastic tubing of one end shore on self-unlocking anchor head (1), antiseized even sheath (6) are intraductal with steel strand wires (4), cable body connector (3) and CFRP stranded conductor (5) the part cover that is arranged in anchor (7) from inside to outside in proper order.

3. The recoverable anchor rope of combined type CFRP of claim 1, characterized in that: still be provided with on the self-unlocking anchor head (1) with self-unlocking anchor head (1) integrated into one piece's anchor board (2), anchor board (2) perpendicular to steel strand wires (4) set up.

4. The recoverable anchor rope of combined CFRP of claim 1, wherein: the cable body connector (3) is a crimping connector, the crimping connector is a sleeve with two open ends, the steel strand (4) and the CFRP strand (5) are respectively inserted from two ends of the sleeve and tightly meshed with the inner wall of the sleeve, and a partition board used for separating the steel strand (4) from the CFRP strand (5) is arranged in the middle of the inner side of the sleeve.

5. The recoverable anchor rope of combined type CFRP of claim 2, characterized in that: the anti-adhesion sheath (6) is made of flexible PVC, and the anti-adhesion sheath (6) is in clearance fit with the cable connector (3).

6. The recoverable anchor rope of combined type CFRP of claim 4, wherein: and glue for increasing the meshing tightness is filled in gaps among the inner wall of the compression joint type connector, the steel strand (4) and the CFRP strand (5).

7. The recoverable anchor rope of combined CFRP of claim 1, wherein: the cable body connector (3) is a bonding connector, the bonding connector is a sleeve with openings at two ends, the steel strand (4) and the CFRP stranded wire (5) are respectively inserted into the sleeve from two ends of the sleeve and are in clearance fit with the sleeve, thermosetting resin is tightly filled in gaps between the inner wall of the bonding connector and the steel strand (4) and between the inner wall of the bonding connector and the CFRP stranded wire (5), and a partition plate for separating the steel strand (4) from the CFRP stranded wire (5) is arranged in the middle of the inner side of the sleeve.