Fabricated CFRP (carbon fiber reinforced plastic) self-anchored wind cable

Abstract

The utility model provides an assembly type CFRP self-anchorage cable which comprises a strip-shaped CFRP cable body and two sets of connecting anchorage devices located at the two ends of the CFRP cable body, and the connecting anchorage devices are used for fixing the two ends of the CFRP cable body. The connecting anchorage device comprises a fixed anchorage device clamping piece and a movable anchorage device clamping piece, the fixed anchorage device clamping piece and the movable anchorage device clamping piece are connected through a clamping piece connecting bolt to form an annular structure, and the fixed anchorage device clamping piece is provided with a connecting part connected with the CFRP cable; the CFRP cable comprises a CFRP rib and a protective sleeve arranged outside the CFRP rib in a sleeving mode, and the protective sleeve is filled with an adhesive material used for bonding the protective sleeve and the CFRP rib. The utility model has the beneficial effects of simple structure, economy, reasonability, good working performance and good durability.

Description

Technical Field

[0001] The utility model belongs to the field of bridge construction equipment, and in particular relates to an assembled CFRP self-anchoring wind rope. Background Art

[0002] During the construction of arch bridges, the arch ribs are prone to wind-induced vibrations due to the influence of building height and cantilever distance, which increases the construction risk. As an important construction auxiliary equipment, cable wind cables play an important role in the construction of arch bridges. When the side arch ribs are in place, the cable wind cables can adjust and control the arch rib axis; when the arch ribs are closed, the cable wind cables can constrain the lateral displacement of the joints; after the arch ribs are closed into an arch, the cable wind cables can serve as elastic supports to reduce the free length of the arch ribs, thereby increasing the stability of the arch ribs. Under the action of external forces, the cable wind cables can also constrain the deformation of the arch ribs. In general, the installation of cable wind cables in the construction of arch bridges can significantly improve the lateral stiffness of the arch ribs and improve their construction safety. Practice has proved that the installation of cable wind cables has always been the main stability measure in the construction of arch bridges.

[0003] The defects of the existing technology are: 1. Most of the cables used in current projects are made of steel wire ropes, but this type of cable has many disadvantages, such as heavy weight, inconvenient transportation, large stress loss, poor fatigue resistance, and inconvenient installation. The main function of the cable is to increase the structural stability during the construction of the arch rib. The cable made of steel wire rope must be tensioned before installation to ensure the cable's anti-deformation performance, which makes its construction process complicated, and the tensioning of the steel wire rope also increases the construction risk;

[0004] 2. The wind load during arch rib construction is a factor that cannot be ignored. The wind load will impact the cable wind rope, and its reciprocating action will also cause fatigue problems for traditional wire rope cable wind ropes. Therefore, how to reduce the impact of fatigue and impact effects on the cable wind ropes is a key issue of concern. In addition, after the construction is completed, the dismantled wire rope cable wind ropes usually cannot meet the requirements of secondary use due to large stress loss, which also causes a waste of engineering materials, and its economic efficiency needs to be improved;

[0005] 3. In addition, the cable wind rope made of steel wire rope is easily affected by the environment and corroded. Corrosion is one of the main factors that reduce the strength of steel and cause damage. This greatly reduces the mechanical properties and durability of traditional steel wire rope cable wind ropes, and poses a hidden danger to their normal use during construction. Summary of the invention

[0006] The problem to be solved by the utility model is to provide an assembled CFRP self-anchoring wind rope, which overcomes the shortcomings of the prior art.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: an assembled CFRP self-anchoring cable wind cable, comprising a strip-shaped CFRP cable wind cable and two sets of connecting anchors located at both ends of the CFRP cable wind cable, the connecting anchors are used to fix the two ends of the CFRP cable wind cable; the connecting anchors include a fixed anchor clip and a movable anchor clip, the fixed anchor clip and the movable anchor clip are connected to form an annular structure through clip connecting bolts, and the fixed anchor clip has a connecting portion connected to the CFRP cable wind cable;

[0008] The CFRP cable comprises a CFRP tendon and a protective sleeve sleeved outside the CFRP tendon, and the protective sleeve is filled with an adhesive material for bonding the protective sleeve and the CFRP tendon.

[0009] Optionally, both ends of the CFRP cable have mounting holes, and the connecting anchor is fixed to the end of the CFRP cable by bolts passing through the mounting holes.

[0010] Optionally, the protective sleeve is a rubber tube.

[0011] The utility model has the advantages and positive effects of: due to the adoption of the technical scheme, the utility model has a simple structure, is economical and reasonable, has good working performance and good durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of a specific implementation method of the utility model;

[0013] Figure 2 yes Figure 1 A schematic diagram of the structure of the first anchor;

[0014] Figure 3 yes Figure 1 A schematic diagram of the structure of the second anchor;

[0015] Figure 4 yes Figure 1 Schematic diagram of the CFRP cable wind rope structure;

[0016] Figure 5 yes Figure 4 A schematic cross-sectional structure diagram of ;

[0017] In the figure: 1. first anchor; 2. second anchor; 3. CFRP cable; 3-1. mounting hole; 4. bolt; 11. first movable anchor clip; 12. first fixed anchor clip; 13. first clip connecting bolt; 21. second movable anchor clip; 22. second fixed anchor clip; 23. second clip connecting bolt, 31. rubber tube; 32. CFRP tendon; 33. adhesive material. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

[0019] like Figure 1 , Figure 4 As shown, the utility model provides an assembled CFRP self-anchoring cable wind cable, including a strip-shaped CFRP cable wind cable 3 and two sets of connecting anchors located at both ends of the CFRP cable wind cable 3, and the connecting anchors are used to fix the two ends of the CFRP cable wind cable 3 at designated positions, generally fixed on the arch rib and the buckle tower.

[0020] Both ends of the CFRP cable wind rope 3 have mounting holes 3 - 1 , and the connecting anchor and the end of the CFRP cable wind rope 3 are fixed by bolts 4 passing through the mounting holes 3 - 1 .

[0021] like Figure 5As shown, the CFRP cable wind rope 3 is composed of a CFRP rib 32 and a rubber tube 31 which is sleeved outside the CFRP rib 32 and used to protect the CFRP rib 32. Since the CFRP material itself is not wear-resistant, and there are inevitably a lot of fine sand and gravel on the construction site, which will be blown up by the wind and will wear the CFRP. Therefore, the rubber tube 31 sleeved outside the CFRP rib plays a role in preventing the CFRP rib 32 from being worn by the sand and gravel in the air. In order to avoid displacement between the CFRP rib 32 and the rubber tube 31, an adhesive material 33 is filled in the rubber tube 31. The adhesive material 33 inside the CFRP cable wind rope 3 is composed of a mixture of epoxy resin and silicon carbide powder. The CFRP material is lightweight, high-strength and has high fracture toughness, fatigue resistance and creep resistance. Compared with traditional steel wire rope cable wind ropes, it has better working performance. The use of CFRP cable wind rope 3 can effectively prevent the displacement of the arch rib during construction and improve the stability of the structure.

[0022] The connecting anchor used to fix the end of the CFRP cable 3 in this example includes a first anchor 1 (such as Figure 2 ) and the second anchor 2 (such as Figure 3 ), the first anchor 1 comprises a first fixed anchor clip 12 and a first movable anchor clip 11, the first fixed anchor clip 12 and the first movable anchor clip 11 are connected to form an annular structure by a first clip connecting bolt 13, and the first fixed anchor clip 12 has a connecting portion connected to the CFRP cable wind rope 3. The second anchor 2 comprises a second fixed anchor clip 22 and a second movable anchor clip 21, the second fixed anchor clip 22 and the second movable anchor clip 21 are connected to form an annular structure by a second clip connecting bolt 23, and the second fixed anchor clip 22 has a connecting portion connected to the CFRP cable wind rope 3.

[0023] Working principle: When the assembled CFRP self-anchored wind cable needs to be assembled on site, first fix the connecting anchors at both ends to the specified position with the clamp connection bolts to stabilize the force on the anchor. Then connect the two ends of the CFRP wind cable 3 to the connecting parts on the fixed anchor clip by bolts 4 respectively. Select the appropriate number of wind cables according to the actual needs of the project and install them according to the above steps. Finally, the staff needs to check the connection status of each connection part of the wind cable to ensure the safety of the construction. If the wind cable needs to be disassembled, just follow the reverse order. The process is simple and fast, while greatly reducing the workload of engineering personnel and ensuring the accuracy and safety of the construction process.

[0024] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. An assembled CFRP self-anchoring cable, characterized in that: It comprises a strip-shaped CFRP cable wind cable and two groups of connecting anchors located at both ends of the CFRP cable wind cable, wherein the connecting anchors are used to fix the two ends of the CFRP cable wind cable; the connecting anchors comprise a fixed anchor clip and a movable anchor clip, wherein the fixed anchor clip and the movable anchor clip are connected with each other through clip connecting bolts to form an annular structure, and the fixed anchor clip has a connecting portion connected with the CFRP cable wind cable; The CFRP cable comprises a CFRP tendon and a protective sleeve sleeved outside the CFRP tendon, and the protective sleeve is filled with an adhesive material for bonding the protective sleeve and the CFRP tendon.

2. The assembled CFRP self-anchoring cable according to claim 1, characterized in that: Both ends of the CFRP cable have mounting holes, and the connecting anchor and the end of the CFRP cable are fixed by bolts passing through the mounting holes.

3. The assembled CFRP self-anchoring cable according to claim 2, characterized in that: The protective sleeve is a rubber tube.

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