Simple device for efficiently locking pre-stressed anchor cable

Abstract

The utility model discloses a simple device for efficiently locking a pre-stressed anchor cable. The simple device for efficiently locking the pre-stressed anchor cable comprises a locking auxiliary assembly, a working anchorage device, an anchor backing plate, a tool anchorage device, a jack and a clamping piece. The inner side of the anchor bearing plate is attached to the side face of a waist beam, an anchor hole is formed in the position, corresponding to the anchor bearing plate, of the waist beam, a working anchorage device is arranged on the outer side of the anchor bearing plate, the working anchorage device is inserted into the lower end of the locking auxiliary assembly, a jack is arranged at the upper end of the locking auxiliary assembly, and the working anchorage device is inserted into the jack. The jack is connected with a tool anchorage device, and clamping pieces are arranged on the outer sides, located on the tool anchorage device and the working anchorage device, of the pre-stressed anchor cable. Tensioning force can be fully transmitted to the anchoring section of the pre-stressed anchor cable through the locking auxiliary assembly, the stress transmission attenuation effect is effectively reduced, the overall structure is simple and reliable, and the locking auxiliary assembly has the advantage of being low in cost.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and in particular to a simple device for efficient locking of prestressed anchor cables. Background Technology

[0002] Currently, high-rise buildings typically employ deep foundation pits to effectively utilize underground space. During deep foundation pit construction, to reduce costs and accelerate basement construction, developers often prefer prestressed anchor cables and lintels as a support method, rather than reinforced concrete support beams and lintels. Furthermore, during conventional prestressed anchor cable tensioning, most construction teams use clamps for tensioning, completing the clamping process during the tensioning phase.

[0003] During the tensioning process of prestressed anchor cables, it is impossible to determine at what tension force the wedges will lock completely, and whether the force will still be transmitted to the anchor cable itself after the wedges are locked. As a result, the actual locking value of the anchor cable is often lower than the design locking value. In some cases, the stress monitoring value of some projects is less than half of the locking value, which poses a serious risk to the safety of deep foundation pits.

[0004] Therefore, there is an urgent need for a new, simple device for efficient locking of prestressed anchor cables to overcome this deficiency. Utility Model Content

[0005] In view of the above problems, this utility model is proposed to provide a simple device for efficient locking of prestressed anchor cables that overcomes or at least partially solves the above problems.

[0006] This utility model provides a simple device for efficient locking of prestressed anchor cables. The simple device for efficient locking of prestressed anchor cables includes: a locking auxiliary component, a working anchor, an anchor plate, a tool anchor, a jack, and clamps. The inner side of the anchor plate is attached to the side of the waist beam. The waist beam has an anchor hole corresponding to the position of the anchor plate. The working anchor is provided on the outer side of the anchor plate. The working anchor is inserted into the lower end of the locking auxiliary component. The upper end of the locking auxiliary component has a jack, which is connected to the tool anchor. The prestressed anchor cable passes through the tool anchor, the jack, the locking auxiliary component, the working anchor, and the anchor plate in sequence, and then passes through the anchor hole. Clamps are provided on the outer side of the prestressed anchor cable at both the tool anchor and the working anchor.

[0007] Optionally, the locking auxiliary component includes an upper pad, a lower pad, and a fixing post; the upper pad and the lower pad have the same structure and are arranged in parallel; the upper pad and the lower pad are respectively provided with fixing holes at the four corners of the upper pad and the lower pad, and fixing posts are inserted into the fixing holes; the upper pad and the lower pad are fixedly connected by the fixing posts.

[0008] Optionally, a positioning hole is provided in the middle area between the upper pad and the lower pad, the jack is provided in the positioning hole on the upper pad, and the working anchor is provided in the positioning hole on the lower pad.

[0009] Optionally, after the fixing post is inserted into the fixing mounting hole, it is fixed by welding, and the weld quality is not lower than level three.

[0010] Optionally, the fixing column is a grade III steel with a diameter of 32mm.

[0011] Optionally, the upper and lower pads are provided with a plurality of support mounting holes located outside the positioning hole, and a support column is inserted into the support mounting hole.

[0012] Optionally, after the support column is inserted into the support mounting hole, it is fixed by welding, and the weld quality is not lower than level three.

[0013] Optionally, the support column may be, for example, grade III steel with a diameter of 25 mm.

[0014] The technical solution provided in this embodiment of the utility model has at least the following technical effects or advantages:

[0015] The simple device for efficient locking of prestressed anchor cables described in this embodiment of the invention can fully transfer the tension force to the anchorage section of the prestressed anchor cable through the locking auxiliary component, effectively reducing the stress transmission attenuation effect. The overall structure is simple and reliable, and has the advantage of low cost.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a side sectional view of the simple device for efficient locking of prestressed anchor cables according to the present invention;

[0019] Figure 2 This is a schematic diagram of the locking auxiliary component.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Locking auxiliary components; 2. Working anchor; 3. Anchor plate; 4. Tool anchor; 5. Jack; 6. Wedge; 7. Prestressed anchor cable; 8. Waist beam; 9. Anchor hole; 11. Upper pad; 12. Lower pad; 13. Positioning hole; 14. Fixing column; 15. Support column; 16. Fixed installation hole; 17. Support installation hole. Detailed Implementation

[0022] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings.

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The accompanying drawings show preferred embodiments of the present invention. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0024] Unless otherwise specified, all raw materials, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0025] Figure 1 This is a structural schematic diagram of a simple device for efficient locking of prestressed anchor cables provided in an embodiment of this utility model. (See attached diagram.) Figure 1 As shown, the simple device for efficient locking of prestressed anchor cables includes a locking auxiliary component 1, a working anchor 2, an anchor plate 3, a tool anchor 4, a jack 5, and clamps 6. The inner side of the anchor plate 3 is attached to the side of the waist beam 8. The waist beam 8 has an anchor hole 9 corresponding to the position of the anchor plate 3. The working anchor 2 is provided on the outer side of the anchor plate 3. The working anchor 2 is inserted into the lower end of the locking auxiliary component 1. The upper end of the locking auxiliary component 1 is provided with a jack 5. The jack 5 is connected to the tool anchor 4. The prestressed anchor cable 7 passes through the tool anchor 4, the jack 5, the locking auxiliary component 1, the working anchor 2, and the anchor plate 3 in sequence, and then passes through the anchor hole 9. Clamps 6 are provided on the outer side of the prestressed anchor cable 7 at both the tool anchor 4 and the working anchor 2. Tension force is provided by the jack 5 to maintain structural stability among the components.

[0026] Specifically, the locking auxiliary component 1 is obtained by welding the raw materials. Before tensioning, the working anchor 2 and the anchor plate 3 (closely attached to the surface of the waist beam 8) are placed through the prestressed anchor cable 7. Then, the locking auxiliary component 1 is fitted in and the direction and angle are adjusted. Finally, the jack 5, tool anchor 4, and corresponding clamps 6 are installed (when installing the clamps 6, the prestressed anchor cable 7 is tightened, thereby adjusting and fixing the entire system). Tensioning is strictly carried out in stages according to the pressure conversion table. After tensioning to the locking value and stabilizing, the clamps 6 at the working anchor 2 are installed from around the locking auxiliary component 1. After all the clamps 6 are installed, the jack 5 releases the tension (this device can eliminate the oil return process). After the tension is fixed and released, the jack 5, working anchor 2, tool anchor 4, locking auxiliary component 1, etc. can be disassembled and put into the next tensioning cycle of the prestressed anchor cable 7.

[0027] Figure 2 This is a structural diagram of the locking auxiliary component 1, combined with... Figure 2 As shown, the locking auxiliary component 1 includes an upper pad 11, a lower pad 12, and a fixing post 14. The upper pad 11 and the lower pad 12 have the same structure and are arranged in parallel. Fixed mounting holes 16 are provided at the four corners of the upper pad 11 and the lower pad 12, and the fixing post 14 is inserted into the fixed mounting holes 16. The upper pad 11 and the lower pad 12 are fixedly connected by the fixing post 14. A positioning hole 13 is provided in the middle area of ​​the upper pad 11 and the lower pad 12. The jack 5 is provided in the positioning hole 13 on the upper pad 11, and the working anchor 2 is provided in the positioning hole 13 on the lower pad 12. The positioning hole 13 is used to place the working anchor 2, the jack 5, and to accommodate the prestressed anchor cable 7, providing a working surface for the working anchor 2.

[0028] After the fixing column 14 is inserted into the fixing mounting hole 16, it is fixed by welding, and the weld quality is not lower than Grade III. The fixing column 14 is Grade III steel with a diameter of 32mm, which is used to bear the main load when the tensioning jack 5 is being pulled.

[0029] To further improve the stability of the structure, multiple support mounting holes 17 are provided on the upper pad 11 and the lower pad 12 outside the positioning hole 13. Support columns 15 are inserted into the support mounting holes 17, which further improves the connection reliability between the upper pad 11 and the lower pad 12.

[0030] After the support column 15 is inserted into the support mounting hole 17, it is fixed by welding, and the weld quality is not lower than grade three. The support column 15 is used to provide auxiliary support and enhance structural stability. The support column 15 is, for example, grade three steel with a diameter of 25mm, and it evenly distributes the tension load to the upper pad 11 and the lower pad 12.

[0031] In this embodiment of the utility model, the upper pad 11 and the lower pad 12 are 300×300×25mm (Q235) steel plates, which serve as supporting surfaces to provide physical support.

[0032] The diameter of the positioning hole 13 is determined according to the actual application requirements to match the jack 5 and the working anchor 2. For example, the diameter of the positioning hole 13 can be 150mm.

[0033] It should be noted that in this embodiment of the utility model, the upper pad 11, lower pad 12, fixed column 14 and support column 15 can all be assembled and welded using equipment on the construction site. Depending on the actual application scenario, the raw materials can also be directly replaced with materials on site, such as waste steel bars and steel plates on site, which can be used as support column 15, fixed column 14 or upper pad 11 and lower pad 12, respectively, which has better flexibility.

[0034] The simple device for efficient locking of prestressed anchor cables described in this embodiment of the invention can fully transfer the tension force to the anchoring section of the prestressed anchor cable 7 through the locking auxiliary component 1. At the same time, the clamp 6 can be tightened after the prestressed anchor cable 7 has been fully prestressed. Due to the lack of friction and other obstacles from the clamp 6, the tension stress can be fully transferred to the anchoring section of the prestressed anchor cable 7, effectively reducing the stress transmission attenuation effect and eliminating the adverse situations such as low anchor cable stress compliance rate and failure under traditional tensioning methods. This greatly ensures the on-site construction safety of ultra-deep foundation pits. The overall structure is simple and reliable, and has the advantage of low cost.

[0035] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0036] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the claims, the inventive aspect lies in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0037] It should be noted that the above embodiments are illustrative of the present invention and not restrictive of the present invention, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims.

Claims

1. A simple device for efficient locking of prestressed anchor cables, characterized in that, The simple device for efficient locking of prestressed anchor cables includes: a locking auxiliary component, a working anchor, an anchor plate, a tool anchor, a jack, and clamps; the inner side of the anchor plate is attached to the side of the waist beam, the waist beam has an anchor hole corresponding to the position of the anchor plate, the outer side of the anchor plate has a working anchor, the working anchor is inserted into the lower end of the locking auxiliary component, the upper end of the locking auxiliary component has a jack, the jack is connected to the tool anchor, the prestressed anchor cable passes through the tool anchor, jack, locking auxiliary component, working anchor, and anchor plate in sequence, and is then inserted into the anchor hole, and clamps are provided on the outer side of the prestressed anchor cable at both the tool anchor and the working anchor.

2. The simple device for efficient locking of prestressed anchor cables according to claim 1, characterized in that: The locking auxiliary component includes an upper pad, a lower pad, and a fixing post; the upper pad and the lower pad have the same structure and are arranged in parallel; the upper pad and the lower pad are respectively provided with fixing holes at the four corners of the upper pad and the lower pad, and fixing posts are inserted into the fixing holes; the upper pad and the lower pad are fixedly connected by the fixing posts.

3. The simple device for efficient locking of prestressed anchor cables according to claim 2, characterized in that: A positioning hole is provided in the middle area between the upper pad and the lower pad. The jack is provided in the positioning hole on the upper pad, and the working anchor is provided in the positioning hole on the lower pad.

4. The simple device for efficient locking of prestressed anchor cables according to claim 3, characterized in that: After the fixing post is inserted into the fixing installation hole, it is fixed by welding, and the weld quality is not lower than level three.

5. The simple device for efficient locking of prestressed anchor cables according to claim 2, characterized in that: The fixing column is made of grade III steel with a diameter of 32mm.

6. The simple device for efficient locking of prestressed anchor cables according to claim 3, characterized in that: The upper and lower pads are provided with multiple support mounting holes located outside the positioning hole, and support columns are inserted into the support mounting holes.

7. The simple device for efficient locking of prestressed anchor cables according to claim 6, characterized in that: After the support column is inserted into the support mounting hole, it is fixed by welding, and the weld quality is not lower than level three.

8. The simple device for efficient locking of prestressed anchor cables according to claim 6, characterized in that: The support column is, for example, grade III steel with a diameter of 25 mm.

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