Prestress anti-floating anchor waterproof device

Abstract

The utility model discloses a prestress anti-floating anchor waterproof device which is used for being buried in a bottom plate and comprises a water stop sleeve, a sheath and a prestress steel strand, the prestress steel strand is arranged in the sheath, the outer surface of the sheath is coated with a waterproof layer, and the waterproof layer is arranged on the outer surface of the sheath. The water stop sleeve is arranged on the outer side of the sheath in a sleeving mode, and the periphery of the water stop sleeve makes contact with the bottom plate. The outer surface of the sheath is coated with the waterproof layer, the waterproof layer and concrete have good adhesion performance, water can be effectively prevented from permeating into the bottom plate along the outer surface of the sheath, further, the outer side of the sheath is sleeved with the water stop sleeve, and the water stop sleeve is tubular, large in length, capable of resisting continuous permeation of water and not prone to failure. Therefore, the water seepage amount can be effectively reduced through the waterproof layer coated on the outer surface of the sheath, and further, continuous seepage of water can be resisted through the water stop sleeve with larger length, so that the leakage condition of the bottom plate can be effectively avoided in a longer time.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation engineering, in particular to a prestressed anti-floating anchor waterproof device. Background Art

[0002] Prestressed anti-floating anchors, such as prestressed anti-floating anchor rods or prestressed anti-floating anchor piles, are important building components.

[0003] The currently disclosed prestressed steel strand anti-floating anchor waterproof structures can be divided into two categories: the first category is to waterproof the tension end anchor, and the representative patent is "Prestressed anti-floating anchor tension end anti-seepage water-stopping structure" (application number: 202311199377.X). The second category is to waterproof the connection between the anti-floating anchor (pile) and the base plate, and the representative patent is "A top locking anchoring method for pressure-type anti-floating piles" (application number: 202111604171.1). At the same time, the current "Anti-floating Anchor Rods for Building Structures" 22G815 Atlas uses waterproof structures such as variable-section transition pipes and water-stop steel plates.

[0004] However, the anti-permeability performance of the above waterproof structure is poor, and water seepage still occurs during use. The bottom plate water seepage is mainly concrete seepage and prestressed steel strand seepage. Among them, the slow-bonding prestressed steel strand is filled with slow-setting adhesive inside, and the unbonded prestressed steel strand is filled with grease inside. Water generally does not penetrate from the inside of the prestressed steel strand. However, whether it is a slow-bonding prestressed steel strand or an unbonded prestressed steel strand, there is a problem of poor bonding between the polyethylene sheath and concrete. Water will seep along the interface between the sheath of the prestressed steel strand and the concrete. Water leakage at the interface between the sheath and the concrete is a common phenomenon. Therefore, how to effectively prevent the bottom plate from leaking has become a technical problem that needs to be solved urgently in this field. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the utility model is how to prevent leakage from occurring in the building floor.

[0006] In order to solve the above problems, an embodiment of the utility model proposes a prestressed anti-floating anchor waterproof device, which is used to be buried in the base plate. The prestressed anti-floating anchor waterproof device includes a water-stop casing, a sheath and a prestressed steel strand. The prestressed steel strand is arranged in the sheath. The outer surface of the sheath is coated with a waterproof layer. The water-stop casing is sleeved on the outside of the sheath. The outer periphery of the water-stop casing is in contact with the base plate.

[0007] A further technical solution is that the number of the water-stopping sleeves is at least three, and the water-stopping sleeves are arranged on the outside of the sheath at intervals.

[0008] A further technical solution is that the length of the water-stopping sleeve is greater than 150 mm, and the thickness of the water-stopping sleeve is greater than 5 mm.

[0009] A further technical solution is that the water-stopping sleeve is a putty-type rubber water-stopping sleeve that expands when exposed to water.

[0010] A further technical solution is that the material of the waterproof layer is one of polyurethane waterproof coating, acrylic waterproof coating and waterproof sealant.

[0011] A further technical solution is that the waterproof layer completely covers the outer surface of the sheath, and the thickness of the waterproof layer is greater than 0.5 mm.

[0012] A further technical solution is that the inner diameter of the water-stop sleeve is at least 2 mm larger than the outer diameter of the sheath.

[0013] A further technical solution is that the prestressed anti-floating anchor waterproof device also includes a filler, and the filler is filled in the gap between the sheath and the prestressed steel strand.

[0014] A further technical solution is that the prestressed steel strand is a slow-bonding prestressed steel strand, the material of the sheath is ribbed polyethylene plastic, and the material of the filler is a slow-setting adhesive.

[0015] A further technical solution is that the prestressed steel strand is a non-bonded prestressed steel strand, the sheath is made of a smooth polyethylene material, and the filler is made of grease.

[0016] Compared with the prior art, the technical effects achieved by the embodiments of the present invention include:

[0017] In the technical solution of the utility model, the outer surface of the sheath is coated with a waterproof layer, and the waterproof layer has good adhesion to the concrete, which can effectively prevent water from penetrating into the bottom plate along the outer surface of the sheath, thereby reducing the amount of water seepage. Furthermore, the water-stopping sleeve is sleeved on the outside of the sheath, and the water-stopping sleeve is tubular and has a large length, which can resist the continuous penetration of water, is not easy to fail, and has higher reliability. It can be seen that the utility model can effectively reduce the amount of water seepage through the waterproof layer coated on the outer surface of the sheath on the one hand, and resist the continuous penetration of water through the water-stopping sleeve with a large length on the other hand, so that the bottom plate leakage can be effectively avoided for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0021] Figure 1 A schematic structural diagram of a prestressed anti-floating anchor waterproof device proposed in an embodiment of the utility model;

[0022] Figure 2 A cross-sectional view of a prestressed anti-floating anchor waterproof device proposed in an embodiment of the utility model;

[0023] Figure 3 A schematic diagram of an application scenario of a prestressed anti-floating anchor waterproof device proposed in an embodiment of the utility model.

[0024] Reference numerals

[0025] Waterstop casing 1, waterproof layer 2, sheath 3, filler 4, prestressed steel strand 5, pile body concrete 6, base plate 7. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Similar component numbers in the drawings represent similar components. Obviously, the embodiments to be described below are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0028] It should also be understood that the terms used in this utility model embodiment specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model embodiments. As used in the utility model embodiment specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0029] See also Figure 1-Figure 3 The embodiment of the utility model provides a prestressed anti-floating anchor waterproof device, which is used to be buried in the bottom plate 7; the prestressed anti-floating anchor can be, for example, a prestressed anti-floating anchor rod or a prestressed anti-floating anchor pile. Specifically, the bottom plate 7 is a concrete bottom plate of a building. After the prestressed anti-floating anchor waterproof device of the utility model is set at a predetermined position, the concrete bottom plate is directly cast, so that the prestressed anti-floating anchor waterproof device is buried in the concrete bottom plate.

[0030] In order to achieve better anti-seepage performance and avoid leakage of the bottom plate 7, the prestressed anti-floating anchor waterproof device includes a water stop sleeve 1, a sheath 3 and a prestressed steel strand 5. The specific structure is described as follows:

[0031] The prestressed steel strand 5 is arranged in the sheath 3, and the sheath 3 can provide good protection for the prestressed steel strand 5, thereby preventing the prestressed steel strand 5 from being corroded by the external environment and ensuring that it can maintain high performance for a long time.

[0032] The outer surface of the jacket 3 is coated with a waterproof layer 2 , and the waterproof layer 2 has good adhesion to the concrete, which can effectively prevent water from penetrating into the bottom plate 7 along the outer surface of the jacket 3 .

[0033] Furthermore, the waterproof sleeve 1 is sleeved on the outside of the sheath 3, and the outer periphery of the waterproof sleeve 1 contacts the bottom plate 7. Specifically, the waterproof sleeve 1 is entirely buried in the bottom plate 7. The waterproof sleeve 1 is tubular and has a longer length than a waterproof strip or a waterproof ring, so it has a better waterproof effect and is not prone to failure. The waterproof sleeve 1 will swell when it encounters water, squeezing the bottom plate 7 so that water cannot pass through, thereby achieving a good waterproof effect.

[0034] In the technical solution of the utility model, the outer surface of the sheath 3 is coated with a waterproof layer 2, and the waterproof layer 2 has good adhesion to the concrete, which can effectively prevent water from penetrating into the bottom plate 7 along the outer surface of the sheath 3, thereby reducing the amount of water seepage. Furthermore, the waterproof sleeve 1 is sleeved on the outside of the sheath 3, and the waterproof sleeve 1 is tubular and has a large length, which can resist the continuous penetration of water, is not easy to fail, and has higher reliability. It can be seen that the utility model can effectively reduce the amount of water seepage through the waterproof layer 2 coated on the outer surface of the sheath 3 on the one hand, and resist the continuous penetration of water through the waterproof sleeve 1 with a large length on the other hand, so that it can effectively prevent the leakage of the bottom plate 7 for a long time.

[0035] Further, see Figure 1-Figure 3 In the embodiment of the utility model, the number of the water-stopping sleeves 1 is at least three, and each of the water-stopping sleeves 1 is arranged at intervals on the outside of the sheath 3. For example, in this embodiment, the number of the water-stopping sleeves 1 is three. Each water-stopping sleeve 1 is a waterproof barrier. By setting at least three water-stopping sleeves 1, leakage of the bottom plate 7 can be effectively avoided. At the same time, compared with setting a water-stopping sleeve 1 with a length covering the entire sheath 3, on the one hand, the material cost is lower, and on the other hand, it can ensure the bonding of the prestressed steel strands 5 and the concrete of the bottom plate 7.

[0036] It should be noted that the water-stop sleeve 1 usually has a longer length after manufacturing. During on-site construction, it is cut into multiple sections of about 15 cm and inserted into the outside of the sheath 3 of the prestressed steel strand 5 at intervals. The interval arrangement is mainly to ensure the adhesion between the prestressed steel strand 5 and the concrete. If the water-stop sleeve 1 is completely put on the outside of the prestressed steel strand 5 in the bottom plate section, the concrete and the prestressed steel strand 5 will have no contact, and the prestressed steel strand 5 may slip during the tensioning process.

[0037] Furthermore, in order to achieve a better waterproof effect, for each waterproof sleeve 1, the length of the waterproof sleeve 1 is greater than 150 mm, and the thickness of the waterproof sleeve 1 is greater than 5 mm. For example, in one embodiment, the length of the waterproof sleeve 1 is greater than 180 mm, and the thickness of the waterproof sleeve 1 is greater than 6 mm. Within the range of a length greater than 150 mm and a thickness greater than 5 mm, the waterproof sleeve 1 has a longer length and can resist long-term water penetration. At the same time, the thickness is greater than 5 mm, which can ensure that the waterproof sleeve 1 has a larger volume expansion after absorbing water and swelling to fill the gap, thereby achieving a good waterproof effect.

[0038] Furthermore, in order to achieve a better waterproof effect, the waterproof sleeve 1 is a putty-type rubber water-swelling waterproof sleeve 1. The material of the putty-type rubber water-swelling waterproof sleeve 1 is a putty-type rubber water-swelling waterproof material. The putty-type rubber water-swelling waterproof sleeve 1 will expand after contacting water, and at the same time generate a large contact pressure, tightly squeezing the bottom plate 7, thereby effectively preventing water penetration.

[0039] Further, in order to achieve a better waterproof effect, the material of the waterproof layer 2 is one of polyurethane waterproof coating, acrylic waterproof coating and waterproof sealant, which is not specifically limited in the present invention. The above-mentioned waterproof material (polyurethane waterproof coating, acrylic waterproof coating or waterproof sealant) is coated on the outer surface of the sheath 3 to form the waterproof layer 2.

[0040] Furthermore, in order to achieve a better waterproof effect, the waterproof layer 2 completely covers the outer surface of the sheath 3 without any exposed parts, and the waterproof layer 2 should be evenly coated without any unevenness.

[0041] Furthermore, in order to achieve a better waterproof effect, the thickness of the waterproof layer 2 is greater than 0.5 mm, preferably the thickness of the waterproof layer 2 is 1-2 mm, for example, the thickness of the waterproof layer 2 is 1.5 mm. If the thickness is too thin, waterproof failure may occur easily.

[0042] Furthermore, the inner diameter of the waterproof sleeve 1 is at least 2 mm larger than the outer diameter of the jacket 3 of the prestressed steel strand 5, so as to facilitate the assembly of the waterproof sleeve 1 with the prestressed steel strand 5. For example, in one embodiment, the inner diameter of the waterproof sleeve 1 is 2 mm larger than the outer diameter of the jacket 3 of the prestressed steel strand 5.

[0043] Since the inner diameter of the sheath 3 is larger than the outer diameter of the prestressed steel strand 5, there is a gap between the sheath 3 and the prestressed steel strand 5. In the embodiment of the utility model, the prestressed anti-floating anchor waterproof device also includes a filler 4. The filler 4 is filled in the gap between the sheath 3 and the prestressed steel strand 5. Usually, the filler 4 completely fills the gap between the sheath 3 and the prestressed steel strand 5 to prevent water from penetrating from the gap between the sheath 3 and the prestressed steel strand 5.

[0044] Furthermore, in the embodiment of the utility model, the prestressed steel strand 5 is a slow-bonding prestressed steel strand 5 or a non-bonding prestressed steel strand 5 .

[0045] When the prestressed steel strand 5 is a slow-bonding prestressed steel strand 5, the material of the sheath 3 is ribbed polyethylene plastic, and the material of the filler 4 is a slow-setting adhesive. It can be understood that the ribbed polyethylene plastic means that the sheath 3 is provided with a rib structure for strengthening strength.

[0046] When the prestressed steel strand 5 is an unbonded prestressed steel strand 5, the material of the sheath 3 is a smooth polyethylene material, and the material of the filler 4 is grease. It can be understood that the smooth polyethylene material means that the inner surface of the sheath 3 is a smooth structure without a rib structure for strengthening strength.

[0047] Furthermore, the prestressed steel strand 5 comprises a plurality of steel wires, wherein the number, diameter and strength of the prestressed steel strand 5 are determined comprehensively after calculation according to the characteristic value of the pull-out bearing capacity of the anti-floating anchor rod (pile). One end of the prestressed steel strand 5 is buried in the pile body concrete 6.

[0048] The construction method of the prestressed anti-floating anchor waterproof device of the utility model mainly comprises the following steps:

[0049] 1) After removing the overfilled concrete at the top of the pile, the surface of the jacket 3 should be cleaned to remove the mud and soil attached to it, and then the waterproof material should be applied to the outside of the jacket 3 of the prestressed steel strand 5.

[0050] 2) After the waterproof material is cured to form a waterproof layer 2, the waterproof casing 1 is inserted into the prestressed steel strand 5. The length of the waterproof casing 1 should not be less than 150 mm, and three waterproof casings 1 are evenly arranged.

[0051] 3) pouring concrete of base plate 7;

[0052] 4) Tensioning prestressed steel strand 5.

[0053] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0059] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

[0060] The above is a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A prestressed anti-floating anchor waterproof device, characterized in that: The prestressed anti-floating anchor waterproof device is used to be buried in the base plate. The prestressed anti-floating anchor waterproof device includes a water-stop casing, a sheath and a prestressed steel strand. The prestressed steel strand is arranged in the sheath. The outer surface of the sheath is coated with a waterproof layer. The water-stop casing is sleeved on the outside of the sheath. The outer periphery of the water-stop casing is in contact with the base plate.

2. The prestressed anti-floating anchor waterproof device according to claim 1, characterized in that: The number of the water-stopping sleeves is at least three, and the water-stopping sleeves are sleeved on the outside of the sheath at intervals.

3. The prestressed anti-floating anchor waterproof device according to claim 2, characterized in that: The length of the water-stopping sleeve is greater than 150 mm, and the thickness of the water-stopping sleeve is greater than 5 mm.

4. The prestressed anti-floating anchor waterproof device according to claim 1, characterized in that: The water-stopping sleeve is a putty-type rubber water-stopping sleeve that expands when exposed to water.

5. The prestressed anti-floating anchor waterproof device according to claim 1, characterized in that: The material of the waterproof layer is one of polyurethane waterproof coating, acrylic waterproof coating and waterproof sealant.

6. The prestressed anti-floating anchor waterproof device according to claim 5, characterized in that: The waterproof layer completely covers the outer surface of the sheath, and the thickness of the waterproof layer is greater than 0.5 mm.

7. The prestressed anti-floating anchor waterproof device according to claim 1, characterized in that: The inner diameter of the water-stopping sleeve is at least 2 mm larger than the outer diameter of the sheath.

8. The prestressed anti-floating anchor waterproof device according to claim 7, characterized in that: The prestressed anti-floating anchor waterproof device also includes a filler, which is filled in the gap between the sheath and the prestressed steel strand.

9. The prestressed anti-floating anchor waterproof device according to claim 8, characterized in that: The prestressed steel strand is a slow-bonding prestressed steel strand, the material of the sheath is ribbed polyethylene plastic, and the material of the filler is a slow-setting adhesive.

10. The prestressed anti-floating anchor waterproof device according to claim 8, characterized in that: The prestressed steel strand is an unbonded prestressed steel strand, the sheath is made of smooth polyethylene material, and the filler is made of grease.

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