Glue injection type FRP rib anchoring end
By using the technology of combining glue-injection design and internal threaded wires in the FRP rib anchoring end, the problem of insufficient anchoring force of the existing FRP rib anchoring end is solved, and the anchoring force and seismic resistance are significantly improved.
Patent Information
- Application Number
- CN202422746201.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-11-12
AI Technical Summary
The existing FRP rib anchor ends have problems such as insufficient anchoring force, easy aging and corrosion in the reinforcement of building structures, which are difficult to meet engineering needs.
The glue-injected FRP rib anchor end is adopted, and the connection strength and stability are enhanced by the adhesive layer between the rib body and the fixing sleeve.
The anchoring force and seismic resistance of the FRP rib anchoring ends are improved, the problem of insufficient anchoring force is solved, and the stability and durability of the connection are enhanced by the combination of glue layer and thread design.
Smart Images
Figure CN223034619U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building reinforcement, in particular to an injection-type FRP bar anchoring end. Background Technique
[0002] At present, in the building structure reinforcement project, some existing FRP bar anchoring end treatment methods have problems such as insufficient anchoring force, easy aging, and easy corrosion, which are not convenient to meet the engineering requirements. Content of the Utility Model
[0003] In order to improve the anchoring force of the FRP bar anchoring end, the utility model provides an injection-type FRP bar anchoring end.
[0004] An injection-type FRP bar anchoring end provided by the utility model adopts the following technical scheme:
[0005] An injection-type FRP bar anchoring end includes a concrete structure, a bar body and a fixing sleeve. One end of the bar body is threadedly connected to the inside of the fixing sleeve, and an adhesive layer is fixedly connected between the bar body and the fixing sleeve.
[0006] By adopting the above technical scheme, including a concrete structure, a bar body and a fixing sleeve, one end of the bar body is threadedly connected to the inside of the fixing sleeve, and an adhesive layer is fixedly connected between the bar body and the fixing sleeve.
[0007] By adopting the above technical scheme, the internal thread in the fixing sleeve can also make the bar body of the FRP bar and the fixing sleeve connected tightly. Through the adhesive layer, the connection is made more tight. The fixing sleeve can provide sufficient anchoring force and seismic performance, which is beneficial to improving the anchoring force of the FRP bar anchoring end.
[0008] Preferably, a cylindrical hole groove is opened inside the fixing sleeve, and internal thread threads are evenly opened along the axial direction of the cylindrical hole groove.
[0009] Preferably, one end of the bar body is a frustum end. External threads one and external threads two are respectively opened on a part of the outer surface of the bar body and the frustum end along the axis thereof, and the external threads one are threadedly connected to the internal thread threads.
[0010] By adopting the above technical scheme, the external threads two first enter the cylindrical hole groove, and then the bar body is rotated to adjust the direction of the external threads one, so as to avoid damage to the external threads one and the internal threads being damaged accordingly.
[0011] Preferably, the adhesive layer is made of anchoring adhesive.
[0012] Preferably, the frustum end of the bar body is located inside the cylindrical hole groove.
[0013] Preferably, the adhesive layer wraps the frustum end, the anchoring adhesive covers the inner wall of the cylindrical hole groove, and one end of the rib body and the outer surface of the fixing sleeve are fixedly connected to the inside of the concrete structure.
[0014] By adopting the above technical solution, the anchoring adhesive flows in from one end of the cylindrical hole groove until it fills the frustum end and the other end of the cylindrical hole groove, strengthening the connection between the fixing sleeve and the rib body. One end of the fixing sleeve and the rib body is located inside the concrete structure, reinforcing the concrete structure.
[0015] Preferably, the internal threaded wire includes right-handed threads and left-handed threads, and both ends of the right-handed threads are fixedly connected to both ends of the left-handed threads.
[0016] By adopting the above technical solution, the connection between the threads is more uniform in force, reducing the problem of thread loosening, which is beneficial to keeping the connection between the rib body and the fixing sleeve tight.
[0017] In summary, the utility model has the following beneficial technical effects:
[0018] 1. The device is provided with an adhesive layer, which can make the rib body of the FRP rib and the fixing sleeve into a whole. The method of anchoring with the implanting adhesive is simple in processing and convenient in operation. And there is experience in using the anchoring adhesive in cement engineering, so workers can quickly complete the construction of the adhesive layer. The internal threads inside the fixing sleeve can also make the connection between the rib body of the FRP rib and the fixing sleeve tight. The fixing sleeve anchor is made of a high-strength stainless steel sleeve, which can provide sufficient anchoring force and seismic performance, and is beneficial to improving the anchoring force of the anchoring end of the FRP rib.
[0019] 2. The device is provided with internal threaded wires, and the left-handed and right-handed threads are stacked together. When the injected anchoring adhesive cannot enter between the tightened internal threaded wires and the external thread one, the loosening force between the threads is converted into a tightening force to prevent the threads from loosening, completely solving the problem of thread loosening. At the same time, after the alternating stress disappears, the threads can return to their original positions, that is, if the internal threaded wires and the external thread one are deformed, they can recover after the alternating stress disappears, making the connection between the rib body of the FRP rib and the fixing sleeve tight, which is beneficial to improving the anchoring force of the anchoring end of the FRP rib. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is an exploded perspective view of the three-dimensional structure of an injection-type FRP rib anchoring end of the utility model;
[0021] Figure 2 is a top view of an injection-type FRP rib anchoring end of the utility model;
[0022] Figure 3 is Figure 2 the cross-sectional view along line A-A in
[0023] Figure 4It is a schematic structural diagram of a glue-injected FRP bar anchoring end fixed in a concrete structure according to the present utility model;
[0024] Figure 5 It is a schematic structural diagram of the reinforcing body in a glue-injected FRP bar anchoring end according to the present utility model.
[0025] Explanation of reference numerals:
[0026] 1, reinforcing body; 2, fixing sleeve; 3, glue layer; 4, frustum end; 5, concrete structure. Specific implementation mode
[0027] The following further elaborates on the present utility model in conjunction with the attached Figures 1-5 drawings.
[0028] An embodiment of the present utility model discloses a glue-injected FRP bar anchoring end.
[0029] Referring to Figure 1 , 4 , it includes a concrete structure 5, a reinforcing body 1 and a fixing sleeve 2. The reinforcing body 1 is the FRP bar. The fixing sleeve 2 is made of stainless steel material to increase the anchoring force and seismic performance of the FRP bar anchoring end. One end of the reinforcing body 1 is threadedly connected to the inside of the fixing sleeve 2. A glue layer 3 is fixedly connected between the reinforcing body 1 and the fixing sleeve 2. In the gap between the reinforcing body 1 and the fixing sleeve 2, an anchoring glue (such as a planting bar glue and other materials) is filled. After the planting bar glue solidifies, the FRP bar is fixed in the stainless steel fixing sleeve 2. Finally, the whole fixing sleeve 2 and one end of the reinforcing body 1 are fixed in the concrete structure 5.
[0030] Referring to Figure 2 , 3 , 4, a cylindrical hole groove is provided inside the fixing sleeve 2. Internal thread threads are evenly provided along the axial direction of the cylindrical hole groove. The anchoring glue flows in from one end of the cylindrical hole groove until it fills to the frustum end 4 and the other end of the cylindrical hole groove, strengthening the connection between the fixing sleeve 2 and the reinforcing body 1.
[0031] Referring to Figure 1 , 3 , 5, one end of the reinforcing body 1 is a frustum end 4. External threads one and external threads two are respectively provided along the axial direction on a part of the outer surface of the reinforcing body 1 and the frustum end 4. The external threads one are threadedly connected to the internal thread threads. The external threads two are used to adjust the angle of the reinforcing body 1 entering the cylindrical hole groove, so that the external threads one are aligned with the internal thread threads.
[0032] Referring to Figure 1 , 3 , the glue layer 3 is made of an anchoring glue, such as a planting bar glue and other materials, to fill the gap between the reinforcing body 1 and the fixing sleeve 2.
[0033] Referring to Figure 2 , 3, 4. The frustum end 4 of the rib body 1 is located inside the cylindrical hole groove. The frustum end 4 does not penetrate through the rib body 1 and remains within the protection range of the rib body 1.
[0034] Refer to Figure 1 , 3 , 4. The glue layer wraps the frustum end 4. The smaller side of the frustum end 4 first enters the inside of the cylindrical hole groove to avoid damaging the first external thread and the second external thread of the rib body 1 when correcting the threaded connection between the rib body 1 and the fixing sleeve 2. The anchoring glue covers the inner wall of the cylindrical hole groove. One end of the rib body 1 and the outer surface of the fixing sleeve 2 are fixedly connected to the inside of the concrete structure 5.
[0035] Refer to Figure 1 , 3 , the internal thread includes right-handed threads and left-handed threads. The two ends of the right-handed threads are fixedly connected to the two ends of the left-handed threads, that is, two sets of threads are accommodated, and at the same time, the left-handed and right-handed threads are stacked together. When the injected anchoring glue cannot enter the gap between the tightened internal thread and the first external thread, the loosening force between the threads is converted into a tightening force to prevent the threads from loosening, completely solving the problem of thread loosening, and at the same time enabling the threads to return to their original positions after the alternating stress disappears, that is, if the internal thread and the first external thread are deformed, they can recover after the alternating stress disappears.
[0036] The implementation principle of an injection-type FRP rib anchoring end in an embodiment of the present utility model is as follows:
[0037] Screw the rib body 1 into the fixing sleeve 2, and then fill the gap between the rib body 1 and the fixing sleeve 2 with the glue layer 3, the anchoring glue (such as planting glue and other materials). After the planting glue solidifies, the FRP rib is fixed in the stainless-steel fixing sleeve 2, so that one end of the rib body 1 is anchored in the concrete through the stainless-steel fixing sleeve 2.
[0038] The above are all preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.
Claims
1. A glue-injected FRP tendon anchoring end, characterized in that: It comprises a concrete structure (5), a reinforcement body (1) and a fixing sleeve (2), wherein one end of the reinforcement body (1) is threadedly connected to the interior of the fixing sleeve (2), and an adhesive layer (3) is fixedly connected between the reinforcement body (1) and the fixing sleeve (2).
2. The glue-injected FRP tendon anchoring end according to claim 1, characterized in that: A cylindrical hole groove is provided inside the fixing sleeve (2), and the cylindrical hole groove is evenly provided with internal threads along the axial direction thereof.
3. The glue-injected FRP tendon anchoring end according to claim 2, characterized in that: One end of the rib body (1) is a truncated cone end (4), and a portion of the outer surface of the rib body (1) and the truncated cone end (4) are respectively provided with an outer thread 1 and an outer thread 2 along their axis, and the outer thread 1 is threadedly connected to the inner thread.
4. The glue-injected FRP tendon anchoring end according to claim 3, characterized in that: The adhesive layer (3) is made of anchoring adhesive.
5. The glue-injected FRP tendon anchoring end according to claim 4, characterized in that: The truncated cone end (4) of the rib body (1) is located inside the cylindrical hole.
6. The glue-injected FRP tendon anchoring end according to claim 5, characterized in that: The adhesive layer (3) wraps the truncated cone end (4), the anchoring adhesive covers the inner wall of the cylindrical hole groove, and one end of the tendon (1) and the outer surface of the fixing sleeve (2) are fixedly connected to the inside of the concrete structure (5).
7. The glue-injected FRP tendon anchoring end according to claim 6, characterized in that: The internal thread wire comprises a positive wire and a negative wire, and two ends of the positive wire are fixedly connected to two ends of the negative wire.