CN212612665U - Anti-floating anchor rod rigid anchor backing plate capable of applying ultrahigh prestress - Google Patents
Anti-floating anchor rod rigid anchor backing plate capable of applying ultrahigh prestress Download PDFInfo
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- CN212612665U CN212612665U CN202021001296.6U CN202021001296U CN212612665U CN 212612665 U CN212612665 U CN 212612665U CN 202021001296 U CN202021001296 U CN 202021001296U CN 212612665 U CN212612665 U CN 212612665U
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Abstract
The utility model belongs to the technical field of anti-floating anchor rod, a can apply anti-floating anchor rod rigidity anchor backing plate of super high prestressing force is disclosed, has the problem that the anchor eye damaged and the concrete fracture when applying prestressing force in order to solve anti-floating anchor rod. The utility model discloses in the use, the sleeve pipe of backing plate and lower part is used for firm anchor eye to guarantee that the vertical pressurized of anchor rope head is stable, can improve the stability of concrete simultaneously, and the anchor slab is used for applying the prestressing force, and backing plate and anchor slab form a whole after through sleeve pipe fixed connection for can not take place the condition of slope after applying the prestressing force, thereby make the anchor eye avoid being damaged, has also prevented the problem that the fracture appears in the concrete simultaneously, improves the construction quality of anti-floating anchor rod. Meanwhile, in the construction process, the condition that the applied prestress cannot incline is ensured, and the construction difficulty is reduced, so that the construction period is shortened, and the aim of reducing the construction cost is fulfilled.
Description
Technical Field
The utility model belongs to the technical field of anti-floating anchor rod, concretely relates to anti-floating anchor rod rigidity anchor backing plate that can apply super high prestressing force.
Background
An anti-floating anchor rod is one of anti-floating measures for underground structure of building engineering. The anti-floating anchor rod refers to a structural member arranged for resisting upward displacement of a building on the anti-floating anchor rod, is related to the height and change of underground water level, and is opposite to the stress direction of the compression-resistant pile.
The prestressed anti-floating anchor rod is a rod-shaped object capable of applying prestress, one end of the rod-shaped object is anchored in a hard rock stratum after a drill hole penetrates through a soft rock stratum or a sliding surface, and then the rod-shaped object is tensioned at the other free section, so that pressure is applied to the rock stratum to anchor an unstable rock body. The main procedures of the prestressed anti-floating anchor rod are as follows: 1. hole forming, 2, measuring the hole depth, the hole diameter and the skewness, 3, processing the anchor head; 4. and (5) fixing the anchoring section, 6, pre-tensioning, tensioning and locking, and 7, sealing and grouting.
However, in the process of pre-tensioning, tensioning and locking the cable bolt, the prior art is to use the concrete foundation pad layer poured in situ as a support point for applying prestress. Since the concrete in the anchor hole is not completely solidified when the prestress is applied, the inclination is unavoidable when the prestress is applied, which results in the damage of the anchor hole when the prestress is applied and the crack of the concrete is very easy to occur, especially when the ultrahigh prestress is applied, the damage of the anchor hole and the crack of the concrete are more serious.
Disclosure of Invention
The utility model discloses a solve anti-floating anchor rod and have the problem that the anchor eye damaged and the concrete fracture when exerting prestressing force, and provide an anti-floating anchor rod rigidity anchor backing plate that can exert super high prestressing force.
For solving the technical problem, the utility model discloses the technical scheme who adopts is:
the utility model provides an anti-floating anchor rod rigidity anchor backing plate that can apply super high prestressing force, its characterized in that includes anchor slab and the backing plate that is located the anchor slab below, the backing plate is laid on the upper portion of anchor eye and the overall dimension of backing plate is greater than the size of anchor eye, set up the through-hole that is used for steel strand wires to pass on the anchor slab, the centre bore has been seted up on the backing plate, the sub-unit connection of anchor slab has the sleeve pipe, the sheathed tube lower extreme passes the centre bore of backing plate in proper order and extends into in the anchor eye, the sleeve pipe with the anchor slab the sleeve pipe with the equal fixed connection of backing plate.
Furthermore, the outer diameter of the sleeve is matched with the inner diameter of the anchor hole, and the length of the sleeve extending into the anchor hole is at least larger than the diameter of the anchor hole.
Further, the overall dimension of the backing plate is at least two times larger than the diameter of the anchor hole.
Furthermore, an anchorage device used for locking the steel strand is arranged on the anchor plate.
Furthermore, an armpit plate with a large upper end and a small end is arranged between the lower end face of the anchor plate and the sleeve.
Furthermore, an armpit plate with a small upper end and a large lower end is arranged between the upper end face of the base plate and the sleeve.
Furthermore, the periphery of the sleeve is respectively provided with at least two haunching plates for fixedly connecting the anchor plate and the backing plate.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses an anti-floating anchor rod rigidity anchor backing plate that can apply super high prestressing force is in the use, the sleeve pipe of backing plate and lower part is used for the vertical pressurized stability that firm anchor eye guaranteed anchor rope head, can improve the stability of concrete simultaneously, the anchor slab is used for applying prestressing force, backing plate and anchor slab form a whole after through sleeve pipe fixed connection, make the condition that can not take place the slope after applying prestressing force, thereby make the anchor eye avoid being damaged, the problem that the fracture appears in the concrete has also been prevented simultaneously, improve the construction quality of anti-floating anchor rod. Meanwhile, in the construction process, the condition that the applied prestress cannot incline is ensured, and the construction difficulty is reduced, so that the construction period is shortened, and the aim of reducing the construction cost is fulfilled.
The utility model discloses can enough be applicable to the use of ordinary prestressing force anti-floating anchor rod, the use of the anti-floating anchor rod of specially adapted applied super high prestressing force (to the anti-floating anchor rod of super high prestressing force is applyed to needs, the condition that anchor eye damage, concrete fracture appear more easily when applying prestressing force in prior art).
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another embodiment of the present invention;
fig. 4 is a schematic top view of the backing plate of the present invention;
the labels in the figure are: 1. the anchor device comprises an anchor device body 2, an anchor plate 3, a sleeve 4, a base plate 5, a steel strand 6, an anchor hole (wherein concrete is poured in the anchor hole), 7, an auxiliary plate 8 and a center hole.
Detailed Description
The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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 thus, should not be construed as limiting the present application; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Combine the attached drawing, the utility model discloses an anti-floating anchor rod rigidity anchor backing plate of super high prestressing force can apply, including anchor slab 2 and the backing plate 4 that is located anchor slab 2 below, backing plate 4 is laid on the upper portion of anchor eye 3 and the overall dimension of backing plate 4 is greater than the size of anchor eye 4, offer the through-hole that is used for steel strand wires 5 to pass on the anchor slab 2, the centre bore has been seted up on the backing plate 4, the sub-unit connection of anchor slab 2 has sleeve pipe 3, the lower extreme of sleeve pipe 3 passes in proper order the centre bore 8 of backing plate 4 and extends into in the anchor eye 6, sleeve pipe 3 with anchor slab 2 sleeve pipe 3 with the equal fixed connection of backing plate 4. Wherein, the sleeve pipe and the anchor plate, the sleeve pipe and the backing plate are preferably fixedly connected by adopting a welding mode.
In some embodiments, the anchor plate is generally made of a steel plate, the anchor plate may be formed in a square or rectangular shape, and the thickness of the anchor plate is related to the magnitude of the applied prestress and the material of the anchor plate, so that it should be ensured that the anchor plate is not deformed such as dents or bends during the design and manufacture process, and those skilled in the art can understand and understand the deformation, and no further description is provided herein.
In some embodiments, the outer diameter of the casing 3 is adapted to the inner diameter of the anchoring opening 6, and the length of the casing 3 extending into the anchoring opening 6 is at least larger than the diameter of the anchoring opening. The sleeve 3 extends into the anchor hole 6 to form an organic whole with concrete, and when prestress is applied, the sleeve and the base plate can transmit force uniformly downwards, and meanwhile, the base plate and the sleeve can be prevented from being inclined, so that the anchor hole is prevented from being damaged due to inclination, and the concrete is prevented from cracking.
In some embodiments, the outer diameter of the casing may be slightly larger than the size of the anchor hole, so that the casing is in close contact with the soil body, further increasing the positive stress when the prestress is applied.
In some embodiments the length of the sleeve and the extension into the anchor eye is greater than the diameter of the anchor eye, for example when the diameter of the anchor eye is 150mm, the length of the sleeve 3 extending into the anchor eye 6 is 200 mm. In the course of a specific embodiment, the length of the casing extending into the anchor hole can be flexibly adjusted according to the actual engineering conditions, but at least it should be ensured that the length of the casing extending into the anchor hole should be larger than the diameter of the anchor hole.
In some embodiments, the backing plate 4 has a physical dimension at least two times greater than the diameter of the anchor openings 6. The backing plate 4 is used for bearing the reverse acting force generated when the applied prestress is applied and transmitting the reverse acting force to the soil body, so that the overall dimension of the backing plate 4 is at least two times larger than the diameter of the anchor hole 6 in order to prevent the anchor hole from being damaged and uniformly transmit the reverse acting force to the soil body.
In some embodiments, the backing plate 4 may be designed to be circular, square, rectangular or polygonal, and in general, the backing plate has a square structure. For example, when the diameter of the anchor eye 6 is 150mm, the length and width of the shim plate are both 400 mm.
In some embodiments, the anchor plate 4 is provided with an anchor 1 for locking the steel strand 5, wherein the anchor is known in the art and will be understood and appreciated by those skilled in the art, and will not be described herein.
With reference to fig. 1, in some embodiments, an armpit 7 with a large upper end and a small end is provided between the lower end surface of the anchor plate 2 and the sleeve 3. Add armpit 7 and can improve the steadiness of being connected between anchor slab and the sleeve pipe 3, can improve the support intensity of anchor slab again simultaneously, prevent that the anchor slab from appearing the condition such as deformation, bending when applying prestressing force, guarantee the accuracy of applying prestressing force size.
Referring to fig. 2, in some embodiments, an armpit 7 with a small upper end and a large lower end is disposed between the upper end surface of the backing plate 4 and the sleeve 3, and the armpit 7 can improve the stability of the connection between the backing plate 4 and the sleeve 3 and can uniformly distribute the reverse acting force on the backing plate 4.
In some embodiments, in order to improve the uniformity of the force, the periphery of the sleeve 3 is provided with at least two haunching plates 7 for fixedly connecting the anchor plate 2 and the backing plate 4. Preferably, the individual haunching plates 7 are evenly distributed around the periphery of the sleeve 3.
To sum up, the utility model discloses an anti-floating anchor rod rigidity anchor backing plate that can apply super high prestressing force is in the use, the sleeve pipe of backing plate and lower part is used for the vertical pressurized stability of firm anchor eye assurance anchor rope head, can improve the stability of concrete simultaneously, the anchor slab is used for applying prestressing force, backing plate and anchor slab form a whole after passing through sleeve pipe fixed connection, make the condition that can not take place the slope after applying prestressing force, thereby make the anchor eye avoid being damaged, the problem that the fracture appears in the concrete has also been prevented to the while, improve the construction quality of anti-floating anchor rod. Meanwhile, in the construction process, the condition that the applied prestress cannot incline is ensured, and the construction difficulty is reduced, so that the construction period is shortened, and the aim of reducing the construction cost is fulfilled.
The utility model discloses can enough be applicable to the use of ordinary prestressing force anti-floating anchor rod, the use of the anti-floating anchor rod of specially adapted applied super high prestressing force (to the anti-floating anchor rod of super high prestressing force is applyed to needs, the condition that anchor eye damage, concrete fracture appear more easily when applying prestressing force in prior art).
Simultaneously the utility model discloses a structure is compared in prior art through the mode of concreting, and the volume of pouring that can greatly reduced concrete can further reduce construction cycle and cost.
Claims (7)
1. The utility model provides an anti-floating anchor rod rigidity anchor backing plate that can apply super high prestressing force, its characterized in that includes anchor slab and the backing plate that is located the anchor slab below, the backing plate is laid on the upper portion of anchor eye and the overall dimension of backing plate is greater than the size of anchor eye, set up the through-hole that is used for steel strand wires to pass on the anchor slab, the centre bore has been seted up on the backing plate, the sub-unit connection of anchor slab has the sleeve pipe, the sheathed tube lower extreme passes the centre bore of backing plate in proper order and extends into in the anchor eye, the sleeve pipe with the anchor slab the sleeve pipe with the equal fixed connection of backing plate.
2. The rigid anchor backing plate of an anti-floating anchor rod capable of applying ultrahigh prestress according to claim 1, wherein the outer diameter of the sleeve is matched with the inner diameter of the anchor hole, and the length of the sleeve extending into the anchor hole is at least larger than the diameter of the anchor hole.
3. The rigid anchor pad of an anti-floating anchor rod capable of applying ultrahigh prestress according to claim 1 or 2, wherein the outer dimension of the pad is at least two times larger than the diameter of the anchor hole.
4. The rigid anchor backing plate of an anti-floating anchor rod capable of applying ultrahigh prestress according to claim 1, wherein an anchorage device for locking the steel strand is arranged on the anchor backing plate.
5. The rigid anchor backing plate of an anti-floating anchor rod capable of applying ultrahigh prestress according to claim 1, wherein an armoring plate with a large upper end size and a small upper end size is arranged between the lower end surface of the anchor plate and the sleeve.
6. An ultra-high prestress rigid anchor backing plate for an anti-floating anchor rod according to claim 1, 2, 4 or 5, wherein an haunch plate with a small upper end size and a large lower end size is arranged between the upper end surface of the backing plate and the sleeve.
7. The ultra-high prestress rigid anchor backing plate for the anti-floating anchor rod as claimed in claim 6, wherein at least two haunched plates for fixedly connecting the anchor plate and the backing plate are respectively arranged at the periphery of the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021001296.6U CN212612665U (en) | 2020-06-04 | 2020-06-04 | Anti-floating anchor rod rigid anchor backing plate capable of applying ultrahigh prestress |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021001296.6U CN212612665U (en) | 2020-06-04 | 2020-06-04 | Anti-floating anchor rod rigid anchor backing plate capable of applying ultrahigh prestress |
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| CN212612665U true CN212612665U (en) | 2021-02-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030547A (en) * | 2022-05-17 | 2022-09-09 | 山东大学 | Mechanical anchoring device and method for concrete beam capable of avoiding anchoring shear damage |
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2020
- 2020-06-04 CN CN202021001296.6U patent/CN212612665U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030547A (en) * | 2022-05-17 | 2022-09-09 | 山东大学 | Mechanical anchoring device and method for concrete beam capable of avoiding anchoring shear damage |
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