Support pile water stop anchor cable

Abstract

This utility model relates to a water-stopping anchor cable for retaining piles, comprising a cable sleeve, a pressure plate, a tie rod, an annular airbag, and an anchor cable. The cable sleeve is fitted around the outer circumference of the anchor cable, and the annular airbag is fitted around the outer circumference of the anchor cable and located at one end of the cable sleeve. The pressure plate is connected to one end of the tie rod, and the pressure plate has a pressure plate hole and is fitted around the outer circumference of the anchor cable. The cable sleeve has a first mounting hole aligned with the direction of the anchor cable on its cylindrical wall, and the annular airbag has a second mounting hole corresponding to the first mounting hole and aligned with the direction of the anchor cable. The tie rod passes through the pressure plate hole, the second mounting hole, and the first mounting hole in sequence. This utility model incorporates an annular airbag in its main structure. When not compressed by the pressure plate, the annular airbag can deform freely. When the pressure plate compresses the annular airbag, it is flattened, with its outer circumference abutting against the outer end of the channel and its inner circumference abutting against the anchor cable, thus completely sealing the channel. This effectively prevents groundwater from entering the foundation pit from the outside of the retaining pile, improving waterproofing performance, making the waterproofing more reliable, and less prone to failure.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit support pile anchor cable construction technology, specifically to a support pile water-stopping anchor cable. Background Technology

[0002] During the construction of anchored piles for foundation pit support, holes need to be drilled in the support piles and anchor cables installed. The anchor cables, through prestressing, effectively prevent the support piles from overturning and slipping, ensuring overall stability. The support piles can also share the load through the anchor cables, increasing their bearing capacity. The stress performance of the support piles is improved, stress concentration is reduced, and they can meet greater load requirements.

[0003] To prevent groundwater outside the retaining piles from seeping into the foundation pit through the anchor cable installation holes, necessary water-stopping measures need to be taken at the anchor cable installation holes, such as injecting asphalt adhesive into the holes to prevent seepage. The principle behind this water-stopping measure is that the asphalt adhesive provides waterproofing through the bond between itself and the hole wall, and between itself and the anchor cable. When the asphalt adhesive detaches from the hole wall or the anchor cable, the above-mentioned water-stopping measures will fail, causing seepage. Furthermore, if the outer end of the anchor cable installation hole is not sealed, the injected asphalt adhesive can easily flow outwards, forming cavities in the hole, thus leading to seepage.

[0004] Therefore, it is necessary to propose new measures to overcome the above-mentioned shortcomings. Summary of the Invention

[0005] The purpose of this utility model is to provide a water-stopping anchor cable for support piles to solve the problems of easy failure and easy formation of cavities in the existing anchor cable installation hole water-stopping measures.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A water-stopping anchor cable for a support pile, the water-stopping anchor cable for the support pile includes a cable sleeve, a pressure plate, a tie rod, an annular airbag and an anchor cable;

[0008] The cable loop is fitted around the outer periphery of the anchor cable, and the annular airbag is fitted around the outer periphery of the anchor cable and located at one end of the cable loop;

[0009] The pressure plate is connected to one end of the tie rod, and the pressure plate is provided with a pressure plate hole and is wrapped around the outer periphery of the anchor cable;

[0010] The sleeve has a first mounting hole on its cylindrical wall that is aligned with the direction of the anchor cable. The annular airbag has a second mounting hole that corresponds to the first mounting hole and is aligned with the direction of the anchor cable. The pull rod passes through the pressure plate hole, the second mounting hole, and the first mounting hole in sequence.

[0011] Furthermore, the end of the pull rod is provided with an external thread, and the end of the pull rod passes through the cable sleeve and is fixed by a nut.

[0012] Furthermore, both the inner and outer walls of the cable sleeve are wavy.

[0013] Furthermore, after the water-stopping anchor cable of the support pile is inserted into the hole of the support pile, the hole is filled with grout.

[0014] Furthermore, the injection adhesive is filled between the anchor cable and the cable sleeve, and between the cable sleeve and the channel.

[0015] Furthermore, the end of the anchor cable is anchored to the beam support at the top of the beam inside the pit by a clamp anchor.

[0016] Furthermore, two pull rods are connected to the pressure plate, arranged symmetrically;

[0017] Accordingly, there are two of each of the first mounting hole, the second mounting hole, and the nut.

[0018] Furthermore, the end of the duct of the support pile is provided with a recessed annular groove, and the back of the annular airbag is located in the annular groove.

[0019] Furthermore, the annular airbag is made of nylon and has a rubber coating on its outer surface.

[0020] Furthermore, the diameter of the sling gradually increases from the end closer to the annular airbag to the end farther away from the annular airbag.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] This utility model provides a water-stopping anchor cable for support piles. An annular airbag is designed in the main structure. When the annular airbag is not squeezed by the pressure plate, it can deform freely. When the pressure plate squeezes the annular airbag, it is flattened. The outer circumference abuts against the outer end of the channel, and the inner circumference abuts against the anchor cable, thereby completely sealing the channel. This can effectively prevent groundwater from the outside of the support pile from entering the foundation pit, improve waterproof performance, make the waterproof more reliable, and prevent failure. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 embodiments can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional view of the installation of the water-stopping anchor cable for the support pile in an embodiment of this utility model.

[0025] Figure 2 This is a structural diagram of the support pile water-stopping anchor cable in an embodiment of this utility model.

[0026] Figure 3 This is a schematic diagram of the installation of the water-stopping anchor cable for the support pile in an embodiment of this utility model.

[0027] Figure 4 This is a schematic diagram of the installation of the water-stopping anchor cable for the support pile on another side of this utility model embodiment.

[0028] The diagram is labeled as follows:

[0029] 1-Support pile, 2-Crossbeam support, 3-Sling, 4-Pressure plate, 5-Tie rod, 6-Annular airbag, 7-Nut, 8-Anchor cable, 9-Diameter, 10-First mounting hole, 11-Second mounting hole, 12-Crossbeam inside the foundation pit, 13-Clip anchor. Detailed Implementation

[0030] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Furthermore, in the description of this utility model, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Of course, such terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in a sequence other than those illustrated or described herein.

[0034] It should also be noted that although the order of steps is mentioned in the method description, in some cases, steps may be performed in a different order than that described here, and this should not be interpreted as a restriction on the order of steps.

[0035] In a specific implementation, Figure 1 The left side of the text is defined as "front" or "forward". Figure 1 The right side of the text is defined as "back" or "rear".

[0036] During the construction of the retaining pile anchor, holes 9 will inevitably be drilled in the retaining pile 1 to form a channel. After the anchor cable 8 is inserted, the channel is not sealed, and necessary water-stopping measures need to be taken. Based on this, the present invention provides a water-stopping anchor cable for retaining piles, which provides long-term and stable water-stopping protection for the channel 9.

[0037] Specifically, such as Figure 1-4 The water-stopping anchor cable of the support pile of this utility model includes a cable sleeve 3, a pressure plate 4, a tie rod 5, an annular airbag 6, and an anchor cable 8.

[0038] The cable sleeve 3 is cylindrical with wavy inner and outer walls. The cable sleeve 3 gradually widens along its length, being smaller at one end and larger at the other, forming an overall trumpet shape. It loops around the anchor cable 8, with a gap between them. Furthermore, the diameter of the cable sleeve 3 is smaller than the diameter of the borehole 9 on the support pile 1, and a gap also exists between it and the borehole 9.

[0039] The annular airbag 6 is also wrapped around the outer periphery of the anchor cable 8 and located at the front end of the cable sleeve 3. The annular airbag 6 is made of nylon, and because it is a flexible material, it can be deformed by compression. The outer surface of the annular airbag 6 is coated with a rubber coating to improve airtightness.

[0040] The pressure plate 4 is a circular plate connected to the front end of the tie rod 5. The pressure plate 4 has a pressure plate hole and is fitted around the outer circumference of the anchor cable 8. The sleeve 3 has a first mounting hole 10 aligned with the direction of the anchor cable 8 on its cylindrical wall. The annular airbag 6 has a second mounting hole 11 corresponding to the first mounting hole 10 and aligned with the direction of the anchor cable 8. The tie rod 5 passes through the pressure plate hole, the second mounting hole 11, and the first mounting hole 10 sequentially from front to back, and its end is fixed by a nut 7. At this time, the pressure plate 4 is attached to the front of the annular airbag 6. Specifically, the end of the tie rod 5 has an external thread, and the rear end of the tie rod 5 protrudes from the sleeve 3 and is fixed by the nut 7. The tie rod 5 pulls the pressure plate 4, which can evenly compress the annular airbag 6, continuously sealing the channel 9.

[0041] The outer diameter of the pressure plate 4 is approximately equal to the diameter of the channel 9, and the inner diameter of the pressure plate 4 is approximately equal to the outer diameter of the anchor cable 8. Specifically, the ratio of the outer diameter of the pressure plate 4 to the diameter of the channel 9 is 95%, ensuring that the pressure plate 4 can pass through the channel 9 while maintaining a large contact area between the pressure plate 4 and the annular airbag 6. The ratio of the outer diameter of the anchor cable 8 to the inner diameter of the pressure plate 4 is also 95%, ensuring that the anchor cable 8 can pass through the pressure plate 4 while minimizing the gap between the pressure plate 4 and the anchor cable 8, thus providing a certain degree of waterproofing and leak-stopping effect.

[0042] After the anchor cable for the retaining pile 1 is inserted into the duct 9 of the retaining pile 1, the duct 9 needs to be filled with grout. The grout fills the space between the anchor cable 8 and the sleeve 3, as well as between the sleeve 3 and the duct 9. Because both the inner and outer walls of the sleeve 3 are wavy, the contact area between the sleeve 3 and the grout is increased, making it less likely for the grout to detach from the sleeve 3. This ensures waterproofing while providing stability and pull-out resistance. Furthermore, the diameter of the sleeve 3 gradually increases from the end closer to the annular air bladder 6 to the end farther away from the annular air bladder 6, forming a trumpet shape from front to back, which also enhances the pull-out resistance of the anchor cable for the retaining pile. Making one end of the sleeve 3 larger improves waterproofing, while making the other end smaller facilitates grout injection.

[0043] In some embodiments, two pull rods 5 can be connected to the pressure plate 4, arranged symmetrically. Correspondingly, there are two first mounting holes 10, two second mounting holes 11, and two nuts 7, which can make the pull rods 5 pull the pressure plate 4 evenly, and the pressure plate 4 evenly compresses the annular airbag 6.

[0044] In some embodiments, the outer diameter of the rear end of the cable sleeve 3 is slightly smaller than the diameter of the channel 9, for example, the ratio of the outer diameter of the rear end of the cable sleeve 3 to the diameter of the channel 9 can be 95%. The gap between the rear end of the cable sleeve 3 and the channel 9 is relatively small, allowing the cable sleeve 3 itself to be well waterproof. The ratio of the outer diameter of the front end of the cable sleeve 3 to the diameter of the channel 9 can be 80%. The gaps between the front end of the cable sleeve 3 and the channel 9, as well as between the front end of the cable sleeve 3 and the anchor cable 8, are relatively large, facilitating the injection of potting compound between the channel 9 and the cable sleeve 3, and between the anchor cable 8 and the cable sleeve 3.

[0045] During construction, the end of the anchor cable 8 is anchored to the beam support 2 at the top of the crossbeam 12 in the foundation pit through the clamp anchor 13, which can provide prestress. In addition, the end of the duct 9 of the support pile 1 is constructed with a recessed annular groove structure. The back of the annular airbag 6 is located in the annular groove, and its outer circumference fits against the arc surface of the annular groove, squeezing the gap and increasing the contact area between the annular airbag 6 and the duct 9, which can improve the water-blocking effect of the annular airbag 6.

[0046] The specific construction process of this utility model is as follows:

[0047] S1: First, drill holes in the support pile 1 to form a channel 9, and then construct a recessed annular groove structure on the front of the channel 9.

[0048] S2: Anchor cable 8 passes through hole 9, and pressure plate 4, annular airbag 6 and cable sleeve 3 are put on anchor cable 8. Pull rod 5 passes through pressure plate hole, second mounting hole 11 and first mounting hole 10 from front to back.

[0049] Initially, the annular airbag 6 is not compressed by the pressure plate 4 and can deform freely, pushing the pressure plate 4 and the annular airbag 6 out of the channel 9, while the cable loop 3 is located in the channel 9.

[0050] Then, screw nut 7 onto the rear end of lever 5, but do not tighten nut 7 at this time.

[0051] S3: Tension the anchor cable 8 to form prestress, and use the wedge anchor 13 to fix the rear end of the anchor cable 8 to the beam support 2 at the top of the cross beam 12 in the foundation pit.

[0052] S4: Continuously tighten nut 7, pull rod 5 pulls pressure plate 4, pressure plate 4 squeezes annular airbag 6, after annular airbag 6 is flattened, the outer periphery of annular airbag 6 abuts against the annular groove structure on the front of the channel 9, and the inner periphery of annular airbag 6 abuts against anchor cable 8. Annular airbag 6 seals the front of channel 9, which can prevent groundwater outside the support pile 1 from entering the foundation pit.

[0053] S5: Inject grout into the channel 9 through the rear end of the channel 9. The grout can be waterproof glue or asphalt glue. The grout fills the space between the cable sleeve 3 and the channel 9, and between the cable sleeve 3 and the anchor cable 8. At this time, the annular airbag 6 can prevent the grout from flowing out from the front end of the channel 9, ensuring the volume of grout in the channel 9 and ensuring waterproofness.

[0054] The tie rod 5 is parallel to the anchor cable 8 and perpendicular to the pressure plate 4. The pressure plate 4 is parallel to the front end face of the cable sleeve 3. When installing this utility model, it is preferable to rotate the two nuts 7 at the same time or rotate the two nuts 7 alternately so that the two tie rods 5 pull the upper and lower sides of the pressure plate 4 evenly. When the pressure plate 4 squeezes the annular airbag 6, the pressure plate 4 is basically parallel to the front end face of the anchor cable 8, and the annular airbag 6 is squeezed evenly.

[0055] This invention adds an annular airbag 6 to the front section of the channel 9, thereby increasing the waterproofing layer and effectively improving the waterproofing of the pile anchor construction. It is stable, reliable, and not prone to failure, solving the problem of easy water seepage in existing water-stopping measures.

[0056] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A water-stopping anchor cable for support piles, characterized in that: The water-stopping anchor cable of the support pile includes a cable sleeve (3), a pressure plate (4), a tie rod (5), an annular airbag (6), and an anchor cable (8); The cable loop (3) is looped around the outer periphery of the anchor cable (8), and the annular airbag (6) is looped around the outer periphery of the anchor cable (8) and located at one end of the cable loop (3); The pressure plate (4) is connected to one end of the tie rod (5), and the pressure plate (4) is provided with a pressure plate hole and is wrapped around the outer periphery of the anchor cable (8); The sleeve (3) has a first mounting hole (10) on its cylindrical wall that is aligned with the direction of the anchor cable (8). The annular airbag (6) has a second mounting hole (11) that corresponds to the first mounting hole (10) and is aligned with the direction of the anchor cable (8). The pull rod (5) passes through the pressure plate hole, the second mounting hole (11), and the first mounting hole (10) in sequence.

2. The water-stopping anchor cable for a support pile according to claim 1, characterized in that: The end of the pull rod (5) is provided with an external thread, and the end of the pull rod (5) passes through the cable sleeve (3) and is fixed by a nut (7).

3. The water-stopping anchor cable for a support pile according to claim 2, characterized in that: The inner and outer walls of the cable sleeve (3) are both wavy.

4. The water-stopping anchor cable for a support pile according to claim 3, characterized in that: After the anchor cable of the support pile is inserted into the hole (9) of the support pile (1), the hole (9) is filled with grout.

5. The water-stopping anchor cable for a support pile according to claim 4, characterized in that: The injection adhesive is filled between the anchor cable (8) and the cable sleeve (3), and between the cable sleeve (3) and the channel (9).

6. The water-stopping anchor cable for a support pile according to claim 5, characterized in that: The end of the anchor cable (8) is anchored to the beam support (2) at the top of the crossbeam (12) in the foundation pit by a clamp anchor (13).

7. The water-stopping anchor cable for a support pile according to claim 6, characterized in that: Two tie rods (5) are connected to the pressure plate (4) and are arranged symmetrically. Accordingly, the first mounting hole (10), the second mounting hole (11), and the nut (7) are each provided in twos.

8. The water-stopping anchor cable for a support pile according to claim 7, characterized in that: The end of the duct (9) of the support pile (1) is provided with a recessed annular groove, and the back of the annular airbag (6) is located in the annular groove.

9. The water-stopping anchor cable for a support pile according to claim 8, characterized in that: The annular airbag (6) is made of nylon and has a rubber coating on its outer surface.

10. A water-stopping anchor cable for a support pile according to claim 9, characterized in that: The diameter of the sling (3) gradually increases from the end closer to the annular airbag (6) to the end farther away from the annular airbag (6).

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