Slidable anchoring structure and anti-cracking ground structure

Abstract

The utility model discloses a slidable anchoring structure and an anti-cracking ground structure, the slidable anchoring structure comprises a concave block, a concave area of the concave block forms a containing groove, and the bottom of the containing groove is provided with a sliding groove penetrating through the bottom; the isolation cover is used for blocking the notch of the accommodating groove; the anchor bolt comprises a bolt main body and a nut connected to the head of the bolt main body; the anchor bolt is installed in the mode that the bolt body penetrates through the sliding groove, the nut is located in the containing groove, and the anchor bolt can move along the sliding groove. The anti-cracking ground structure comprises an isolating membrane, a concrete layer and a slidable anchoring structure, wherein the isolating membrane and the concrete layer are sequentially laid on an original ground base layer, and the slidable anchoring structure is connected with the original ground base layer and the concrete layer. The slidable anchoring structure is applied to a ground structure, warping of a concrete layer in the ground structure can be avoided, the cracking risk caused by stress concentration can be avoided, and the slidable anchoring structure is suitable for a large-area ground area, especially a large-length-width-ratio ground area.

Description

Technical Field

[0001] This utility model relates to the field of ground structure technology, specifically to a sliding anchoring structure and a crack-resistant ground structure. Background Technology

[0002] When old concrete floors are severely damaged, one possible repair method is to re-pour a new concrete layer on the surface of the old concrete floor. Chinese Patent No. CN220705022U discloses a one-piece molded crack-resistant, adhesive-free, and wear-resistant floor, which is essentially a repaired floor structure. This one-piece molded crack-resistant, adhesive-free, and wear-resistant floor includes a release membrane, a steel fiber reinforced concrete layer, a wear-resistant aggregate layer, and a hardening layer sequentially laid on the original floor base; the wear-resistant aggregate layer is fused to the top of the steel fiber reinforced concrete layer; several anchors with arc-shaped or curved connectors at the top are arranged within the original floor base, the release membrane, and the steel fiber reinforced concrete layer; the anchors pass through the release membrane and are fixed to the original floor base; the connectors are located within the steel fiber reinforced concrete layer.

[0003] The above-mentioned ground structure can often only be applied to small areas. When the ground area is large, especially when the length-to-width ratio is large, the following risks exist: With the changes in temperature and load, as well as the early shrinkage and expansion of the concrete slurry itself, the original ground base and the concrete layer on the original ground base may shrink or expand in the length direction, thereby generating tensile stress on the anchors. The anchor fixing points are prone to cracking due to stress concentration. Utility Model Content

[0004] To address the technical problems mentioned in the background section, this utility model provides a sliding anchoring structure and a crack-resistant ground structure. By replacing the anchors in the existing ground structure with a sliding anchoring structure, the risk of cracking caused by stress concentration can be avoided.

[0005] This utility model provides a sliding anchoring structure, including:

[0006] A concave block, the recessed area of ​​which forms a receiving groove, and the bottom of the receiving groove is provided with a sliding groove that extends through the bottom;

[0007] An isolation cover is used to seal the opening of the receiving slot;

[0008] An anchor bolt, comprising a bolt body and a nut connected to the head of the bolt body;

[0009] The anchor bolt is installed by passing the bolt body through the groove, with the nut located in the receiving groove, and the anchor bolt can move along the groove.

[0010] In this utility model of a sliding anchoring structure, the anchor bolt and the concave block can slide relative to each other. The groove is used to guide the sliding of the anchor bolt. In this application, the sliding direction of the anchor bolt relative to the concave block is the length direction of the groove. The nut is located in the receiving groove and pressed on the groove. The size of the nut ensures that it will not enter the groove. The receiving groove is used to accommodate the nut and provide space for the nut to slide. The isolation cover is used to seal the opening of the receiving groove to prevent concrete slurry from entering the receiving groove, thereby affecting the relative sliding between the anchor bolt and the concave block.

[0011] Furthermore, the receiving groove is cylindrical, such as cylindrical or cuboid, preferably cylindrical.

[0012] Furthermore, the aspect ratio of the groove is preferably 2-2.5:1.

[0013] It should be noted that, in the materials of this application, the aspect ratio of the chute refers to the ratio of the projected length of the chute in the length direction to the projected length in the width direction.

[0014] In some specific embodiments, the projected length of the groove in the width direction is 10mm, and the projected length in the length direction is 20mm-25mm.

[0015] In some specific implementations, the chute is elliptical, rectangular, or racetrack-shaped.

[0016] It should be noted that the elliptical, rectangular, or racetrack-shaped chute refers to the projection of the chute onto the bottom surface of the receiving tank being elliptical, rectangular, or racetrack-shaped.

[0017] When the chute is elliptical, the projected lengths of the chute in the length and width directions are equal to the major and minor axes of the ellipse, respectively, and the length-to-width ratio of the chute is equal to the ratio of the major and minor axes of the ellipse. When the chute is rectangular, the projected lengths of the chute in the length and width directions are equal to the length and width of the rectangle, respectively, and the length-to-width ratio of the chute is equal to the length-to-width ratio of the rectangle.

[0018] A racetrack shape is a rectangle with a semicircle at each end. When the chute is racetrack shaped, the projected length of the chute in the longitudinal direction is equal to the sum of the length of the rectangle and the radius of the semicircle, and the projected length in the width direction is equal to the width of the rectangle, which is also the diameter of the semicircle.

[0019] This utility model does not impose any restrictions on the structure of the isolation cover, as long as it can seal the opening of the receiving groove and prevent concrete slurry from entering the receiving groove.

[0020] In some specific embodiments, the isolation cover has an inverted concave structure. Specifically, the isolation cover includes a cover body adapted to the opening of the receiving groove and an annular wall adapted to the side wall of the receiving groove, with the annular wall provided along the edge of the cover body; in use, the annular wall is placed inside the receiving groove and fits against the side wall of the receiving groove, and the cover body seals the opening of the receiving groove.

[0021] Furthermore, the aforementioned sliding anchoring structure also includes a washer with a first positioning hole. The washer is placed on a sliding groove with its first positioning hole opposite to the sliding groove. When installing the anchor bolt, the bolt body passes through the first positioning hole and the sliding groove on the washer in sequence. In some specific embodiments, the washer is made of metal, preferably a corrosion-resistant metal material, such as stainless steel.

[0022] In this utility model, the main functions of the gasket are: (1) to prevent the nut from falling into the groove; (2) to increase the contact area between the nut and the bottom surface of the receiving groove, so that the nut can more reliably press the concave block.

[0023] Furthermore, the aforementioned slidable anchoring structure also includes a sealing gasket with a second positioning hole. The diameter of the second positioning hole is not less than the projected length of the groove in the longitudinal direction. The sealing gasket is disposed on the bottom surface of the concave block, and the second positioning hole is opposite to the groove. In some specific embodiments, the sealing gasket is made of rubber.

[0024] In the aforementioned sliding anchoring structure, since the concave block and anchor bolt need to be in the concrete for a long time, the material of the concave block and anchor bolt should be a corrosion-resistant material, preferably a corrosion-resistant metal material, such as stainless steel; the material of the isolation cover should preferably be an elastic material with good sealing performance and easy installation, such as rubber.

[0025] Another aspect of this utility model provides a crack-resistant ground structure, comprising: an isolation membrane, a concrete layer, and a slidable anchoring structure connecting the original ground base and the concrete layer, laid sequentially on the original ground base; the bolt body of the anchor bolt in the slidable anchoring structure is fixedly connected to the original ground base, the bottom surface of the concave block is located on the isolation membrane and is pressed by a nut, and the concrete layer encapsulates the slidable anchoring structure; wherein the concave block is configured such that the length direction of its groove is consistent with the length direction of the construction area.

[0026] In some specific implementations, the upper surface of the concrete layer extends 5mm-10mm beyond the upper surface of the sliding anchorage structure.

[0027] In some specific implementations, during the construction of the crack-resistant ground structure, the sliding anchoring structure is configured such that the bolt body is installed at the center of the groove.

[0028] In some specific embodiments, the sliding anchoring structures are arranged as follows: multiple sliding anchoring structures are arranged along the width direction of the construction area near the two short-end boundaries of the construction area. Further, "near the short-end boundaries of the construction area" refers to a location 10cm-20cm away from the short-end boundary.

[0029] Furthermore, for construction areas with a large aspect ratio, the method also includes: arranging multiple sliding anchoring structures along one or more equidistant lines of the construction area. These equidistant lines are parallel to the width direction of the construction area and can be bi- or tri-bisectors, etc.

[0030] In this innovative anti-crack floor structure, the concave block of the sliding anchoring structure is bonded to the upper new concrete layer, and the bolt body of the anchor bolt is fixedly connected to the original ground base. Due to the restraining effect of the concave block and the anchor bolt, the concrete layer can be prevented from warping. Since the anchor bolt and the concave block can also slide relative to each other, when the original ground base or concrete layer shrinks or expands in the length direction, it causes relative movement between the concave block and the anchor bolt in the length direction, thereby avoiding stress concentration at the anchor bolt and thus avoiding the risk of cracking caused by stress concentration.

[0031] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0032] This utility model features a simple and low-cost sliding anchoring structure. By replacing existing anchors in ground structures with this structure, warping of the concrete layer in the ground structure can be avoided, as well as the risk of cracking caused by stress concentration. This enhances the crack resistance of the ground structure and is suitable for large areas, especially ground areas with a large length-to-width ratio. Attached Figure Description

[0033] 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 drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a side sectional view of the sliding anchorage structure in the embodiment;

[0035] Figure 2 This is a cross-sectional view of the sliding anchorage structure in the embodiment;

[0036] Figure 3 This is a schematic diagram showing the distribution of the sliding anchorage structure in the construction area in the embodiment.

[0037] Reference numerals: 100 for sliding anchoring structure, 110 for concave block, 111 for receiving groove, 112 for sliding groove, 120 for isolation cover, 121 for cover body, 122 for ring wall, 130 for anchoring bolt, 131 for nut, 132 for screw, 133 for sleeve, 134 for bottom bolt, 140 for gasket, 150 for sealing gasket, 200 for construction area. Detailed Implementation

[0038] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments thereof. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model. Example

[0039] This embodiment provides a sliding anchoring structure, the structure of which is described in [reference needed]. Figure 1-2 The device includes a concave block 110, an isolation cover 120, and an anchor bolt 130. The concave area of ​​the concave block 110 forms a receiving groove 111, and the bottom of the receiving groove 111 is provided with a sliding groove 112 that passes through the bottom of the concave block 110. The isolation cover 120 is used to seal the opening of the receiving groove 111. The anchor bolt 130 includes a bolt body and a nut 131 connected to the head of the bolt body. The anchor bolt 130 is installed by passing the bolt body through the sliding groove 112, with the nut 131 located in the receiving groove 111, and the anchor bolt 130 can move along the sliding groove 112.

[0040] The concave block 110 is used for bonding with concrete and is made of stainless steel. The concave block 110 is cylindrical in shape, 10mm high, and has a base diameter of 50mm. The receiving groove 111 of the concave block 110 is also cylindrical, with a groove depth of 8mm and a bottom diameter of 40mm. The sliding groove 112 is elliptical, with a major axis of 20mm and a minor axis of 8mm.

[0041] The isolation cover 120 is made of rubber, which offers excellent sealing and is easy to install. Its overall structure is an inverted concave shape adapted to the receiving groove 111. It includes a cover body 121 that fits the opening of the receiving groove 111 and an annular wall 122 that fits the sidewall of the receiving groove 111. The annular wall 122 is positioned along the edge of the cover body 121. In use, the annular wall 122 is placed inside the receiving groove 111 and fits against the sidewall of the receiving groove 111. The cover body 121 seals the opening of the receiving groove 111, thereby isolating the receiving groove 111 from the outside environment and preventing concrete slurry from entering the receiving groove 111. In this embodiment, the thickness of both the cover body 121 and the annular wall 122 of the isolation cover 120 is 2 mm.

[0042] Anchor bolt 130 is also used to connect to concrete and is made of stainless steel. Its bolt body passes through the groove 112, and the nut 131 remains in the receiving groove 111. In this embodiment, anchor bolt 130 is an expansion bolt, and its bolt body includes a screw 132, an expansion tube 133, and a bottom bolt 134; the screw 132 is 12cm long and 6mm in diameter; the expansion tube 133 is fitted over the screw 132, and the bottom bolt 134 is connected to the bottom end of the screw 132; the nut 131 is a hexagonal nut with a 10mm distance between opposite sides and a thickness of 3mm. Example

[0043] The sliding anchoring structure provided in this embodiment differs from that in Embodiment 1 only in the dimensions of the concave block 110 and the structure and dimensions of the sliding groove 112. In this embodiment, the concave block 110 is also cylindrical in shape, with a height of 15mm and a bottom diameter of 50mm. The receiving groove 111 of the concave block 110 is also cylindrical, with a groove depth of 8mm and a bottom diameter of 40mm. The sliding groove 112 is rectangular, with a length of 16mm and a width of 8mm. Example

[0044] Compared with Embodiment 1, the sliding anchoring structure provided in this embodiment further includes a washer 140. The washer 140 has a first positioning hole, and is placed on the bottom surface of the receiving groove 111 with the first positioning hole opposite to the sliding groove 112. When installing the anchor bolt 130, the bolt body passes through the first positioning hole and the sliding groove 112 on the washer 140 in sequence, and the nut 131 is pressed on the washer 140. In this embodiment, the washer 140 is 1.5mm thick, has an outer diameter of 18mm, the diameter of the first positioning hole is 8mm, and the material of the washer 140 is stainless steel. Example

[0045] Compared with Embodiment 1, the sliding anchoring structure provided in this embodiment also includes a sealing gasket 150. The sealing gasket 150 is provided with a second positioning hole and is bonded to the bottom end of the concave block 110, with the second positioning hole opposite to the sliding groove 112. When installing the anchor bolt 130, the bolt body passes through the first positioning hole on the gasket 140, the sliding groove 112, and the second positioning hole on the sealing gasket 150 in sequence, and the nut 131 is pressed on the gasket 140.

[0046] In this embodiment, the sealing gasket 150 is 2mm thick, has an outer diameter of 50mm, and the second positioning hole has a diameter of 45mm. The sealing gasket 150 is made of rubber. The upper part of the sealing gasket 150 is glued to the bottom of the concave block 110, and the lower part is glued to the ground. This forms a seal around the concave block 110, preventing concrete slurry from entering the bottom of the concave block 110, and thus preventing concrete slurry from entering the receiving groove 111 from below the chute 112. Example

[0047] This embodiment provides a crack-resistant ground structure, including an isolation membrane, a concrete layer, and a slidable anchoring structure connecting the original ground base and the concrete layer, which are laid sequentially on the original ground base. The slidable anchoring structure adopts the slidable anchoring structure in Embodiment 3. In the slidable anchoring structure, the bolt body of the anchor bolt 130 is fixed in the original ground base, and the bottom surface of the concave block 110 is located on the isolation membrane and is embedded in the concrete layer. The concave block 110 is configured such that the length direction of its groove 112 is consistent with the length direction of the construction area.

[0048] The construction steps for the crack-resistant ground structure in this embodiment include:

[0049] Drilling points are arranged and holes are drilled in the original ground base of the construction area, and a release membrane is fully laid on the surface of the original ground base. The drilled holes are used to install the sliding anchor structure, so the arrangement of the drilling points should be consistent with the layout of the sliding anchor structure in the construction area, and the drilling size should be consistent with the size of the anchor bolt 130 in the sliding anchor structure. In this embodiment, a drill bit with a diameter of 8mm and a length of 12cm is used for drilling.

[0050] Please see Figure 3 The diagram shows the distribution of the sliding anchorage structures in the construction area in this embodiment. The distribution of the sliding anchorage structures is as follows: multiple sliding anchorage structures 100 are arranged at equal intervals along the width direction of the construction area 200 near the two short-end boundaries of the construction area 200; multiple sliding anchorage structures 100 are also arranged at equal intervals along the bisecting lines of the construction area 200, with a spacing of 30cm. In this embodiment, "near the short-end boundaries of the construction area 200" refers to a location 20cm away from the short-end boundaries.

[0051] Install the sliding anchoring structure 100 inside the borehole;

[0052] In this embodiment, the installation of the sliding anchor structure 100 is specifically as follows: insert the main body of the screw that passes through the gasket 140 and the groove 112 in sequence into the drill hole; adjust the sliding anchor structure so that the length direction of the groove 112 of the concave block 110 is consistent with the length direction of the construction area, and the main body of the screw is installed at the center of the groove 112; use a wrench to rotate the nut 131 in the receiving groove 111 so that the concave block 110 presses against the original ground base layer, and cover it with the isolation cover 120.

[0053] Concrete grout is poured onto the surface of the original ground base layer, completely encasing the sliding anchoring structure.

[0054] Finally, a 15mm thick concrete layer is obtained, with the upper surface of the concrete layer extending approximately 5mm beyond the upper surface of the sliding anchor structure 100.

[0055] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although the present application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of this application, all of which fall within the protection scope of this utility model.

Claims

1. A sliding anchoring structure, characterized in that, include: A concave block, the recessed area of ​​which forms a receiving groove, and the bottom of the receiving groove is provided with a sliding groove that extends through the bottom; An isolation cover is used to seal the opening of the receiving groove; An anchor bolt, comprising a bolt body and a nut connected to the head of the bolt body; The anchor bolt is installed by passing the bolt body through the groove, with the nut located in the receiving groove, and the anchor bolt can move along the groove.

2. The sliding anchoring structure as described in claim 1, characterized in that: The receiving groove is cylindrical or cuboid in shape.

3. The sliding anchoring structure as described in claim 1, characterized in that: The aspect ratio of the groove is 2-2.5:

1.

4. The sliding anchoring structure as described in claim 1, characterized in that: The chute is elliptical, rectangular, or racetrack-shaped.

5. The sliding anchoring structure as described in claim 1, characterized in that: The isolation cover includes a cover body adapted to the opening of the receiving groove and an annular wall adapted to the side wall of the receiving groove, with the annular wall set along the edge of the cover body; in use, the annular wall is placed inside the receiving groove and fits against the side wall of the receiving groove, and the cover body seals the opening of the receiving groove.

6. The sliding anchoring structure as described in claim 1, characterized in that: It also includes a gasket having a first positioning hole; When the gasket is placed on the groove, the bolt body passes through the first positioning hole and the groove on the gasket in sequence.

7. The sliding anchoring structure as described in claim 1, characterized in that: It also includes a sealing gasket, which has a second positioning hole, the diameter of which is not less than the projected length of the groove in the longitudinal direction; the sealing gasket is disposed on the bottom surface of the concave block and the second positioning hole corresponds to the groove.

8. A crack-resistant ground structure, characterized in that, include: A release membrane, a concrete layer, and a sliding anchoring structure connecting the original ground base and the concrete layer are sequentially laid on the original ground base; the sliding anchoring structure is the sliding anchoring structure according to any one of claims 1-7; the bolt body of the anchor bolt in the sliding anchoring structure is fixedly connected to the original ground base, the bottom surface of the concave block is located on the release membrane and is pressed by the nut, and the concrete layer encapsulates the sliding anchoring structure; wherein, the concave block is configured such that the length direction of its groove is consistent with the length direction of the construction area.

9. The crack-resistant ground structure as described in claim 8, characterized in that: The sliding anchorage structure is arranged as follows: multiple sliding anchorage structures are arranged near the two short-end boundaries of the construction area along the width direction of the construction area.

10. The crack-resistant ground structure as described in claim 9, characterized in that: Also includes: Multiple sliding anchorage structures are arranged along one or more equidistant lines of the construction area, where the equidistant lines are parallel to the width direction of the construction area.

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