Anchor sealing device with exhaust hole

Abstract

According to the anchor sealing device with the exhaust holes, an anchor sealing device body is hollow, the two exhaust holes are formed in the top area, groove-shaped holes are reserved in the two sides of the anchor sealing device so that bolt connection of the anchor sealing device and an anchor backing plate can be adjusted, and a rubber sealing ring is additionally arranged at the tail end of the anchor sealing device body so that the anchor backing plate can be prevented from being crushed; sealing between the anchor sealing device and the anchor bearing plate can be effectively kept, the anchor sealing process does not need to be carried out in advance during use, the anchor sealing device and the anchor bearing plate are connected through bolts, and in the grouting process, air in the corrugated pipe is gradually exhausted to the two sides and is exhausted into the anchor sealing device through gaps between the prestressed tendons and the anchorage devices and gaps between the prestressed tendons and the shrink-proof rings. When thick slurry is discharged from the exhaust hole of the anchor sealing device, slurry jacking is stopped, the pressure maintaining process is started, after the slurry is solidified, the anchor sealing device is detached, the slurry jacking and anchor sealing processes are achieved, and the device is simple in structure, convenient to use, capable of being repeatedly used and suitable for the post-tensioning method prestressed duct slurry jacking process.

Description

Technical Field

[0001] This utility model relates to the field of grouting technology for prestressed ducts in building engineering, specifically to a sealing anchor device with an air vent, which is particularly suitable for the grouting process of ducts in post-tensioned prestressed bridges. Background Technology

[0002] Grouting is a crucial step in the construction of post-tensioned prestressed bridges. After the prestressing tendons are stretched, high-strength, low-bleeding, and micro-expansion high-performance grout is injected into the ducts. This effectively protects the prestressing tendons from corrosion, significantly extending the bridge's service life. However, current grouting processes suffer from low grout density and the inability to remove residual air and water, severely compromising the protective effect on the prestressing tendons. With the increasing number of post-tensioned prestressed bridge construction projects and growing national emphasis on public safety, there is an urgent need to develop a new grouting method that can both meet the density requirements and improve production efficiency. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sealing anchor device with an exhaust hole.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an anchor sealing device with a vent hole, comprising a body, side ears, a vent hole, a groove-shaped hole, etc. The body of the anchor sealing device is hollow, and a vent hole is provided on the body near the top. A rubber sealing ring is provided on the side of the body end that contacts the anchor plate. The side ears are symmetrically distributed on both sides of the body and are integrally manufactured with the body. The groove-shaped hole is opened on the side ears, and its shape is similar to a keyway.

[0005] Furthermore, the exhaust vents on the main body are located near the top but not at the top, and the diameter of the exhaust vents is small, making them easy to seal.

[0006] Furthermore, the slotted hole on the side ear is relatively long, allowing for adjustment of the bolt connection position.

[0007] Furthermore, the body cavity has a certain draft angle, which facilitates the disassembly of the sealing and anchoring device.

[0008] Furthermore, the rubber sealing ring at the end of the body completely covers the edge of the end of the body, which can ensure that there is no leakage of grout during the grouting process.

[0009] Furthermore, the center lines of the two side ears are at an angle of 30°-60° to the center line of the vent hole, so that the vent hole can be located at the top after the sealing and anchoring device is fixed.

[0010] Furthermore, the number of exhaust holes is between 1 and 3.

[0011] Furthermore, the length of the slotted hole is at least 30 mm.

[0012] Furthermore, the body is hollow and has a wall thickness of 8-12 mm.

[0013] A method for using a sealing anchor device with vent holes in a pipeline grouting process, comprising the following steps:

[0014] a. The original sealing process is cancelled. Before grouting, the end of the sealing device is tightly attached to the anchor plate and fixed with long bolts to ensure that the rubber sealing ring will not leak grout during the grouting process. The grouting process is the same as the traditional method. Air and water are discharged along the gap between the prestressed tendon and the anchor and the anti-shrink ring, and finally discharged from the exhaust hole on the sealing device body.

[0015] b. The original anchor sealing process is no longer required. The grouting and anchor sealing processes can be completed in one go using the anchor sealing device.

[0016] c. Bolt connection is achieved by using the threaded holes on the anchor plate and the slotted holes on the side lugs of the anchor sealing device. To accommodate the position of the threaded holes on the anchor plate, the slotted holes of the anchor sealing device need to be of a certain length.

[0017] d. The grouting method is basically the same as the traditional grouting process. Grouting is stopped when thick grout emerges from the vent hole of the sealing anchor device, and the pressure holding process begins. After the grout solidifies, the sealing anchor device is removed, and the sealing anchor process is completed.

[0018] Furthermore, during the tightening process, a long bolt is passed through the pre-drilled slot on the side lug. The length of the slot can be used to adjust the rotation angle of the anchor sealing device so that the vent hole faces upward. Then, the bolt is tightened to ensure that the rubber sealing ring fits tightly against the anchor plate, preventing grout from leaking out from here.

[0019] Furthermore, in the grouting process, the traditional grouting technology is adopted, and grouting is performed from the grouting port of the anchor plate. During this process, the air and water in the pipe are gradually discharged to both sides, and discharged into the sealing device through the gap between the prestressed tendon and the anchor and the anti-shrink ring, and finally discharged from the vent hole.

[0020] Furthermore, during the tightening process, be sure to adjust the anchor sealing device so that the vent hole faces upwards;

[0021] Furthermore, during the tightening process, the rubber sealing ring must be pressed firmly;

[0022] Furthermore, during the grouting process, there is no need to perform an anchor sealing procedure, but it is necessary to ensure that the vent holes are unobstructed.

[0023] The beneficial effects of this utility model are:

[0024] 1. This utility model uses a sealing and anchoring device to replace the sealing and anchoring process, which can smoothly discharge the water and air remaining in the duct from the sealing and anchoring device during the grouting process, thereby improving the grouting density.

[0025] 2. The vent hole of the sealing and anchoring device of this utility model faces upward, which can store a part of the grout in the cavity of the sealing and anchoring device during the grouting process, and achieve the sealing and anchoring effect after the grout solidifies.

[0026] 3. The sealing and anchoring device of this utility model is fastened with bolts, and the inner wall has a certain draft angle, which makes it easy to disassemble and can be reused to reduce costs. Attached Figure Description

[0027] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific 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.

[0028] Figure 1 : A schematic diagram of the sealing and anchoring device of this utility model;

[0029] Figure 2 : A schematic diagram of the sealing and anchoring device of this utility model during the grouting process;

[0030] Figure 3 : Schematic diagram of the assembly of prestressed tendons and anchorages of this utility model.

[0031] The attached figures are labeled as follows:

[0032] 1. Body; 2. Vent hole; 3. Side lug; 4. Groove hole; 5. Rubber sealing ring; 6. Anchor sealing device; 7. Anchor; 8. Grouting port; 9. Anchor plate; 10. Pipe; 11. Prestressed tendon; 12. Anti-shrinkage ring; 13. Gap. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] This utility model is applicable to the construction of prestressed duct grouting. Under this condition, due to factors such as corrugated pipe bending and design defects in traditional grouting schemes, problems such as low grout density and residual air and water are frequently encountered during the grouting process. A specific implementation example of this utility model was conceived for this condition.

[0036] To address issues such as low grout density and residual air and water, the anchor sealing device of this invention can cover anchors with a diameter less than 130mm. For example... Figure 1 As shown, the sealing and anchoring device with vent holes of this utility model includes a body 1, which is hollow and has vent holes 2. Side ears 3 are symmetrically distributed on both sides of the body 1. The side ears 3 are integrally manufactured with the body 1 and are on the same plane as the closed side of the body 1. The side ears 3 have groove-shaped holes 4 with a length of not less than 30mm. The open side edge of the body 1 is wrapped with a rubber sealing ring 5.

[0037] like Figure 2 As shown in Figure 3, before grouting, the anchor is not sealed. Instead, the anchor sealing device 6 is used to cover the anchor 7, and bolts are used to fasten the anchor sealing device 6 to the anchor plate 9 (the anchor plate has been cast on the beam, and 9 hereafter refers to the combination of the anchor plate and the beam). During this process, the length of the slotted hole 4 is fully utilized, and the angle of the anchor sealing device is continuously adjusted according to the position of the threaded hole on the anchor plate 9 so that its vent hole 2 faces upward. As the grouting process proceeds, the residual air and water in the pipe 10 will be discharged from the gap 13 between the prestressed tendon 11 and the anchor 7 and the anti-shrinkage ring 12, reach the cavity of the anchor sealing device 6, and finally be discharged from the vent hole 2 of the anchor sealing device.

[0038] Preferably, to ensure that the exhaust port 2 faces upward, the center line of the side ear 3 and the center line of the exhaust port 2 should maintain an angle of 30°-60°.

[0039] Preferably, the number of vent holes 2 on the anchor sealing device should be 2, so as to ensure both the speed of venting and drainage and the strength of the anchor sealing device.

[0040] Preferably, in order to ensure that the position of the groove hole 4 of the anchor sealing device corresponds to the position of the reserved threaded hole of the anchor plate 9, the length of the groove hole 4 can be appropriately extended, at least not less than 30mm.

[0041] Preferably, the diameter of the vent hole 2 of the anchor sealing device should be 5-10mm, so that it is easy to seal during pressure holding.

[0042] Preferably, during the grouting process, a flexible tube can be led out from the vent hole 2 and placed below the liquid surface of the transparent container to make it easier to observe the venting situation.

[0043] Combination Figure 1 , 2The tightening process is as follows: align the grooved hole of the sealing anchor device 6 with the threaded hole on the anchor plate 9, and ensure that the vent hole 2 of the sealing anchor device 6 faces upward. Then tighten it with a long bolt to make the sealing anchor device 6 fit tightly with the anchor plate 9, and the rubber sealing ring 5 is pressed to ensure that the grout does not leak.

[0044] Combination Figure 1 , 2 3. The grouting process is as follows: the grout is pressed into the pipe 10 from the grouting port 8 of the anchor plate 9. Under the action of gravity, it accumulates at the lowest point and gradually spreads to the anchor plate 9. The residual air and water are discharged into the cavity of the sealing device body 1 through the gap 13 between the prestressed tendon 11 and the anchor 7 and the anti-shrinkage ring 12, and finally escape from the vent hole 2 of the sealing device.

[0045] A method for using a sealing anchor device with vent holes in a pipeline grouting process, comprising the following steps:

[0046] a. The original sealing and anchoring process is cancelled. Before grouting, the end of the sealing and anchoring device 6 is tightly attached to the anchor plate 9 and fixed with long bolts to ensure that the rubber sealing ring 5 will not leak grout during the grouting process. The grouting process is the same as the traditional method. Air and water are discharged through the gap 13 between the prestressed tendon 11 and the anchor 7 and the anti-shrink ring 12, and finally discharged from the exhaust hole 2 on the body 1 of the sealing and anchoring device 6.

[0047] b. The original anchor sealing process is no longer required. The grouting and anchor sealing processes can be completed in one go using the anchor sealing device 6.

[0048] c. Bolt connection is achieved by using the threaded hole on the anchor plate 9 and the slotted hole 4 on the side lug 3 of the anchor sealing device 6. To accommodate the position of the threaded hole on the anchor plate 9, the slotted hole 4 of the anchor sealing device 6 needs to be of a certain length.

[0049] d. The grouting method is basically the same as the traditional grouting process. Grouting is stopped when thick grout emerges from the vent hole 2 of the sealing and anchoring device 6, and the pressure holding process begins. After the grout solidifies, the sealing and anchoring device 6 is removed, and the sealing and anchoring process is completed.

[0050] Preferably, during the fastening process, a long bolt is passed through the pre-reserved slotted hole 4 on the side ear 3. The length of the slotted hole 4 can be used to adjust the rotation angle of the sealing anchor device 6 so that the vent hole 2 faces upward. Then the bolt is tightened so that the rubber sealing ring 5 fits tightly with the anchor plate 9 and the grout will not leak out from here.

[0051] Preferably, the grouting process adopts the traditional grouting process, and grouting is performed from the grouting port 8 of the anchor plate 9. During this process, the air and water in the pipe are gradually discharged to both sides, and discharged into the sealing device 6 through the gap 13 between the prestressed tendon 11 and the anchor 7 and the anti-shrink ring 12, and finally discharged from the vent hole 2.

[0052] Preferably, during the tightening process, the sealing anchor device 6 must be adjusted so that the vent hole 2 faces upward;

[0053] Preferably, during the tightening process, the rubber sealing ring must be pressed firmly at 5 points;

[0054] Preferably, during the grouting process, there is no need to perform the anchor sealing procedure, but it is necessary to ensure that the vent hole 2 is unobstructed.

[0055] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An anchoring device with venting comprising a body, a side ear, a vent, and a slot, characterized in that: The body is a hollow structure, the side wall of the body is provided with an exhaust hole, the side of the body in contact with the anchor pad is provided with a rubber sealing ring, the side ears are symmetrically distributed on both sides of the body and are integrally manufactured with the body, and the slot-shaped hole is arranged on the side ear.

2. The anchoring device with venting according to claim 1, characterized in that: The exhaust hole is arranged on the upper portion of the side wall of the body.

3. An anchoring device with venting according to claim 2, characterized in that: The slot-shaped hole is a waist round hole structure.

4. The anchoring device with venting according to claim 3, characterized in that: The cavity of the body is provided with a draft angle.

5. The anchoring device with venting according to claim 4, characterized in that: The rubber sealing ring at the end of the body completely wraps the edge of the end of the body.

6. An anchoring device with venting according to claim 5, characterized in that: The center line of the side ear and the center line of the exhaust hole are 30°-60°.

7. An anchoring device with venting according to claim 6, characterized in that: The number of exhaust holes is 1-3.

8. An anchoring device with venting according to claim 7, characterized in that: The length of the slot-shaped hole is at least 30 mm.

9. The anchoring device with venting according to claim 8, characterized in that: The wall thickness of the body is 8-12 mm.

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