CN215759210U - Connecting device for multi-petal anchor head and steel strand - Google Patents
Connecting device for multi-petal anchor head and steel strand Download PDFInfo
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- CN215759210U CN215759210U CN202122010345.3U CN202122010345U CN215759210U CN 215759210 U CN215759210 U CN 215759210U CN 202122010345 U CN202122010345 U CN 202122010345U CN 215759210 U CN215759210 U CN 215759210U
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Abstract
The utility model provides a connecting device of a multi-petal anchor head and a steel strand, which is characterized in that the top of a base is provided with a wire inlet hole, the bottom of the base is provided with a wire outlet hole, the steel strand can be conveniently hinged and fixed, the pulling resistance strength is high, an inclined sliding surface and an expansion petal matched with the inclined sliding surface are circumferentially arranged on the top of the base, and self-locking anchoring can be realized; a limiting ring is arranged, so that the expanded valve can be conveniently folded and then placed into the drill hole; the wire outlet hole is a conical hole, so that the steel strand can be conveniently anchored; the connecting device is developed in the basement anti-floating construction technology, has the advantages of short construction period and quick anti-floating effect when being applied to basement anti-floating construction, all construction operations are carried out on the waterproof board surface, the construction is simple and convenient, the waterproof board does not need to be drilled through, the construction is not influenced by water pressure, the existing waterproof layer cannot be damaged, large-scale construction mechanical equipment is not needed, the existing basement clearance meets the construction requirements, and the connecting device is suitable for large-scale popularization and use.
Description
Technical Field
The utility model relates to the technical field of self-locking anchoring, in particular to a connecting device of a multi-petal type anchor head and a steel strand.
Background
With the rapid development of social economy, new technologies and new materials are widely applied to building engineering projects, the more deep the basement of a newly built building is built, the more deep the basement is built, the deep excavated basement cannot be influenced by underground water level, and particularly, the basement bottom plate is easy to deform, crack, seep water and other diseases under the direct action of high-pressure underground water, so that the safety and normal use of the structure are influenced.
For the above-mentioned diseases, the conventional methods of thickening the bottom plate, pressing weight to resist floating, supplementing an anti-floating anchor rod behind a waterproof plate to resist floating, draining and reducing pressure are generally adopted, but the conventional method is adopted to solve the above-mentioned basement bottom plate anti-floating diseases and can also produce the following problems: 1. thickening the bottom plate and resisting floating by weight: the increased thickness of the bottom plate can greatly reduce the clear height of the basement, so that the use is influenced; 2. and (3) supplementing an anti-floating anchor rod behind the waterproof plate for anti-floating: the existing basement structure is formed, pressure underground water can gush out when a hole is formed in a bottom plate, silt below a foundation can be brought out along with the pressure underground water, the bottom of the foundation can be hollowed out seriously, the bearing capacity of the existing structural foundation is influenced, the structural potential safety hazard is generated, and the existing waterproof plate can be prevented from being damaged by anchor rod drilling and cannot be recovered; 3. draining and reducing pressure: the anti-floating problem cannot be fundamentally solved, the drainage ditch and the drainage facility need to be regularly enclosed, the operation cost is high, and the method is suitable for the soil layer with the upper layer of stagnant water and low water permeability, wherein the underground water is the soil layer.
In view of the above situation, the applicant tries to adopt the diagonal steel strands to conduct the buoyancy borne by the span-middle area of the ground floor to the support area of the ground floor through the diagonal steel strands, so as to provide anti-buoyancy to the span-middle area 11, prevent the span-middle area from cracking and achieve a very good technical effect.
However, for the self-locking anchoring of the inclined pull steel strand and the support area of the ground floor slab, a conversion anchor joint needs to be added between the commonly used self-locking anchor rod and the steel strand for fixing, which increases the material cost and has limited pulling resistance, so that the improvement of the self-locking anchor rod is needed.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a connecting device of a multi-petal anchor head and a steel strand, which can realize self-locking anchoring and has stronger pulling resistance.
The technical scheme of the utility model is realized as follows: the utility model provides a multi-petal anchor head and steel strand connecting device which comprises a base, a plurality of expansion petals and a locking ring, wherein the top of the base is provided with a wire inlet hole, the bottom of the base is provided with a plurality of wire outlet holes, a plurality of steel strands stretch into the base from the wire inlet hole, single steel strands respectively penetrate out of the wire outlet holes and are anchored with the base, the top of the base is circumferentially provided with an inclined sliding surface, the inner side surfaces of the expansion petals are respectively connected with the inclined sliding surface in a sliding manner, the top of the expansion petals is provided with through holes, and the locking ring penetrates through each through hole.
On the basis of the technical scheme, the expansion valve is preferred to further comprise limiting rings, limiting grooves are circumferentially formed in the outer side surfaces of the expansion valve, and the limiting rings penetrate through the limiting grooves.
On the basis of the above technical scheme, preferably, the circumferential inclined sliding surface at the top of the base is a conical surface or a wedge-shaped surface.
On the basis of the technical scheme, preferably, the wire outlet hole is a tapered hole, and the diameter of one side close to the bottom of the base is larger than the diameter of one side close to the inside of the base.
On the basis of the technical scheme, preferably, 1-30 wire outlet holes are arranged, one wire inlet hole is arranged, and the number of the wire outlet holes corresponds to the number of the steel strands one by one.
On the basis of the technical scheme, the steel tube is preferably further included, the steel tube is nested on the steel strand, and the end part of the steel tube is propped against the top of the expansion valve.
On the basis of the technical scheme, preferably, the base comprises a first pipe fitting, a second pipe fitting and a sealing plate, wherein the top of the first pipe fitting is provided with a wire inlet hole, and the top of the first pipe fitting is circumferentially provided with an inclined sliding surface; the top of the second pipe fitting is communicated with the first pipe fitting, and the second pipe fitting and the first pipe fitting are integrally formed; the sealing plate seals and fixes the bottom opening of the second pipe fitting, and the sealing plate is provided with a wire outlet hole.
On the basis of the technical scheme, the device preferably further comprises a ground base plate, a pile foundation, a prestress tensioning device and two steering supports, wherein the ground base plate comprises a mid-span area and a support area which are formed by pouring and connected with each other, the pile foundation is fixedly connected at the bottom of the support area,
the two steering supports are respectively fixed on the surface of the middle spanning area and are positioned between the two support areas;
the prestress tensioning device is arranged between the two steering supports;
and one end of each of the two strands of steel strands is anchored with the prestress tensioning device, the other end of each of the two strands of steel strands obliquely extends downwards into the support area and is anchored with the base, and the middle parts of the two strands of steel strands are propped against the two steering supports respectively.
It is further preferred that each strand consists of three steel strands.
Compared with the prior art, the connecting device for the multi-petal anchor head and the steel strand has the following beneficial effects:
(1) the top of the base is provided with the wire inlet hole, the bottom of the base is provided with the wire outlet hole, the steel strand can be conveniently hinged and fixed, the pulling resistance strength is high, the top of the base is circumferentially provided with the inclined sliding surface and the expansion valve matched with the inclined sliding surface, and self-locking anchoring can be realized;
(2) a limiting ring is arranged, so that the expanded valve can be conveniently folded and then placed into the drill hole;
(3) the wire outlet hole is a conical hole, so that the steel strand can be conveniently anchored;
(4) the connecting device is developed in the basement anti-floating construction technology, has the advantages of short construction period and quick anti-floating effect when being applied to basement anti-floating construction, all construction operations are carried out on the waterproof board surface, the construction is simple and convenient, the waterproof board does not need to be drilled through, the construction is not influenced by water pressure, the existing waterproof layer cannot be damaged, large-scale construction mechanical equipment is not needed, the existing basement clearance meets the construction requirements, and the connecting device is suitable for large-scale popularization and use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a perspective view of a connection device of the present invention;
FIG. 2 is a perspective view of the connection device of the present invention;
FIG. 3 is a front cross-sectional view of the coupling device of the present invention;
FIG. 4 is a plan view of the connection device of the present invention in a basement anti-floating application;
fig. 5 is a front cross-sectional view of the connection device of the present invention in a basement anti-floating application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, and to fig. 2 and 3, the multi-petal anchor head and strand connecting device of the present invention includes a base 1, a plurality of expansion petals 2, a locking ring (not shown), a limiting ring (not shown), and a steel pipe (not shown).
And the base 1 provides sliding support for the expansion valve 2 and anchors the steel strand S. The top of the base is provided with a wire inlet hole 101, the bottom of the base is provided with a plurality of wire outlet holes 102, a plurality of steel strands S extend into the wire inlet hole 101, and single steel strand S respectively penetrates out of the wire outlet holes 102 and is anchored with the base 1.
Specifically, the base 1 comprises a first pipe 11, a second pipe 12 and a sealing plate 13, wherein a wire inlet hole 101 is formed in the top of the first pipe 11, and an inclined sliding surface is circumferentially arranged on the top of the first pipe; the top of the second pipe fitting 12 is communicated with the first pipe fitting 11, and the second pipe fitting and the first pipe fitting are integrally formed; the sealing plate 13 seals and fixes the bottom opening of the second pipe 12, and the sealing plate 13 is provided with an outlet hole 102.
Preferably, the outlet hole 102 is a tapered hole, and the diameter of the side close to the bottom of the base 1 is larger than the diameter of the side close to the inside of the base 1. Thus, the anchoring joint of the steel strand S can be embedded into the conical wire outlet hole 102 to prevent the steel strand S from falling off. Specifically, the number of the wire outlet holes 102 is 1-30, the number of the wire inlet holes 101 is one, and the number of the wire outlet holes 102 corresponds to the number of the steel strands S one by one. In this embodiment, there are 3 wire holes 102, 3 steel strands S enter from the wire inlet hole 101, and single steel strands S respectively exit from the wire outlet hole 102 and are anchored.
In order to provide sliding support for the expansion valve 2, an inclined sliding surface is circumferentially arranged on the top of the base 1, the inner side surfaces of the expansion valves 2 are respectively in sliding connection with the inclined sliding surface, and specifically, the circumferential inclined sliding surface on the top of the base 61 is a conical surface or a wedge-shaped surface. In this embodiment, the top of the first pipe 11 is circumferentially arranged as a conical surface, and the expansion flap 2 slides up and down along the surface of the conical surface.
In order to make the tail part of the expansion valve 2 extend outwards in the sliding process, the top part of the expansion valve needs to be limited. The expansion petals 2 are provided at the top with through holes 21 and the locking ring is passed through each of the through holes 21. Specifically, the expansion flap 2 can be made of a wire loop.
In the process of putting the connecting device into a drill hole, the expansion valve 2 needs to be folded firstly, so that the limiting grooves 22 are formed in the circumferential direction of the outer side surface of the expansion valve 2, and the limiting rings penetrate through the limiting grooves 22. Specifically, the limiting ring adopts a releasable iron wire ring, which only plays a role of temporarily closing the expansion valve 2, and gradually loosens in the process of opening the later expansion valve 2.
In order to assist the expansion valve 2 to slide and open, the expansion valve further comprises a steel pipe which is nested on the steel strand S, and the end part of the steel pipe is propped against the top of the expansion valve 2. By knocking the steel pipe, the expansion valve 2 slides downwards, and the tail part of the expansion valve 2 extends out and has a self-locking effect.
The practical method of the connecting device of the multi-petal anchor head and the steel strand is described below by taking basement foundation anti-floating as an example.
Referring to fig. 4 to 5, the ground floor 3 is formed by pouring reinforced concrete in the prior art. The foundation slab 1 comprises a midspan region 31 and a support region 32 which are integrally cast and connected with each other, the support region 32 is a main bearing region of the building, the bottom of the support region is fixedly connected with the pile foundation 4, and the bottom of the support region is generally provided with a thicker bearing platform for connecting the pile foundation 4, so that the cast whole is thicker, the area is relatively smaller, and the anti-floating capacity is stronger; the midspan area 31 is a pouring area connected between the support areas 32, is relatively weak in thickness and large in area, so that the anti-floating capacity is poor, and the fracture is easy to occur under the buoyancy action of underground water.
The main design idea of the utility model is as follows: the buoyancy borne by the midspan region 31 is conducted to the seat region 32 by the diagonal pulling of the steel strands S, thereby providing anti-buoyancy to the midspan region 31 and preventing it from breaking.
S1, identifying the mounting position: according to engineering drawings, the positions of the support areas 32 are found out, a quadrilateral is formed by connecting the centers of the four support areas 32 as a vertex line, and the middle points of side lines or the middle points of diagonals of the quadrilateral are marked on the ground base plate 1. Generally speaking, a prestress tension device 5 is arranged near the position of the middle point of the side line or the middle point of the diagonal line of the quadrangle.
S2, mounting the steering bracket 4: the steering supports 6 are symmetrically arranged on both sides of the middle point of the quadrilateral edge or the middle point of the diagonal line obtained in the step S1.
S3, punching and reaming: starting from the midspan region 31, the hole is drilled obliquely down to the seat region 32 and then reamed at the bottom of the resulting borehole. Drilling and reaming are well established techniques and will not be described in detail herein.
The execution sequence of the steps S2 and S3 is not sequential, and may be performed synchronously or sequentially.
S4, anchoring the steel strand S: stretch into steel strand S from the entrance hole 101 of base 1 and single steel strand S wears out and anchors with base 1 from wire hole 102 respectively, rethread spacing ring closes expansion lamella 2, put into the reaming of drilling bottom with base 1 and expansion lamella 2 afterwards, nestification is on steel strand S with the steel pipe again, the steel pipe end supports and holds at expansion lamella 2 top, it makes expansion lamella 2 open and form the auto-lock with the reaming to strike the steel pipe, rethread steel pipe pours the anchor thick liquids into toward drilling, take out the steel pipe, wait that the anchor thick liquids solidify. The anchoring slurry is made by the prior art and is not described in detail herein.
S5, prestress tension: and tensioning the free end of the steel strand S through a steering support 6, and anchoring the free end with a prestress tensioning device 5.
S6, leveling: and laying an impervious concrete layer on the foundation 1, so that the impervious concrete layer submerges the steering support 6 and the prestress tension device 5.
After the installation is completed, the structure is formed as follows:
two steering supports 6 respectively fixed on the surface of the midspan region 31 and positioned between the two support regions 32;
the prestress tensioning device 5 is arranged between the two steering supports 6;
one end of each of the two steel strands S is anchored with the prestress tensioning device 5, the other end of each of the two steel strands S obliquely extends downwards into the support area 32 and is anchored with the base 1, and the middle parts of the two steel strands 5 are abutted against the two steering supports 6. Wherein each strand of steel strand S consists of three steel strands.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a multilobe formula anchor head and steel strand wires connecting device, its includes base (1), a plurality of expansion lamella (2) and locking ring, its characterized in that: the top of the base (1) is provided with a wire inlet hole (101), the bottom of the base is provided with a plurality of wire outlet holes (102), a plurality of steel strands (S) stretch into the wire inlet hole (101), a single steel strand (S) penetrates out of the wire outlet holes (102) respectively and is anchored with the base (1), the circumferential direction of the top of the base (1) is provided with an inclined sliding surface, the inner side surfaces of a plurality of expansion petals (2) are connected with the inclined sliding surface in a sliding mode, the top of each expansion petal (2) is provided with a through hole (21), and the locking ring penetrates through each through hole (21).
2. The multi-petal anchor head and strand connection device of claim 1, wherein: the expansion valve is characterized by further comprising limiting rings, limiting grooves (22) are formed in the circumferential direction of the outer side face of the expansion valve (2), and the limiting rings penetrate through the limiting grooves (22).
3. The multi-petal anchor head and strand connection device of claim 1, wherein: the circumferential inclined sliding surface at the top of the base (61) is a conical surface or a wedge-shaped surface.
4. The multi-petal anchor head and strand connection device of claim 1, wherein: the wire outlet hole (102) is a conical hole, and the diameter of one side close to the bottom of the base (1) is larger than the diameter of one side close to the inside of the base (1).
5. The multi-petal anchor head and strand connection device of claim 1, wherein: the number of the wire outlet holes (102) is 1-30, the number of the wire inlet holes (101) is one, and the number of the wire outlet holes (102) corresponds to the number of the steel strands (S) one by one.
6. The multi-petal anchor head and strand connection device of claim 1, wherein: the steel pipe is nested on the steel strand (S) and the end part of the steel pipe is propped against the top of the expansion valve (2).
7. The multi-petal anchor head and strand connection device of claim 1, wherein: the base (1) comprises a first pipe (11), a second pipe (12) and a sealing plate (13), wherein a wire inlet hole (101) is formed in the top of the first pipe (11), and an inclined sliding surface is circumferentially arranged on the top of the first pipe; the top of the second pipe fitting (12) is communicated with the first pipe fitting (11), and the second pipe fitting and the first pipe fitting are integrally formed; the closing plate (13) closes the bottom opening of the second pipe fitting (12) and is fixed with the bottom opening, and a wire outlet hole (102) is formed in the closing plate (13).
8. The multi-petal anchor head and strand connection device of claim 1, wherein: the device also comprises a ground base plate (3), pile foundations (4), a prestress tensioning device (5) and two steering supports (6), wherein the ground base plate (3) comprises a mid-span area (31) and a support area (32) which are formed by pouring and connected with each other, the bottom of the support area (32) is fixedly connected with the pile foundations (4),
two steering supports (6) respectively fixed on the surface of the middle spanning area (31) and positioned between the two support areas (32);
the prestress tensioning device (5) is arranged between the two steering supports (6);
one end of each of the two steel strands (S) is anchored with the prestress tensioning device (5), the other end of each of the two steel strands (S) obliquely extends downwards into the support area (32) and is anchored with the base (1), and the middle parts of the two steel strands (5) are propped against the two steering supports (6) respectively.
9. The multi-petal anchor head-to-strand connection device of claim 8, wherein: each strand of steel strand (S) consists of three steel strands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122010345.3U CN215759210U (en) | 2021-08-24 | 2021-08-24 | Connecting device for multi-petal anchor head and steel strand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122010345.3U CN215759210U (en) | 2021-08-24 | 2021-08-24 | Connecting device for multi-petal anchor head and steel strand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215759210U true CN215759210U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122010345.3U Active CN215759210U (en) | 2021-08-24 | 2021-08-24 | Connecting device for multi-petal anchor head and steel strand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215759210U (en) |
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2021
- 2021-08-24 CN CN202122010345.3U patent/CN215759210U/en active Active
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| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gao Zuoping Inventor after: Wang Zhenyu Inventor after: Sun Lei Inventor after: Wu Bo Inventor after: Zhang Chang Inventor after: Li Zhiqiang Inventor before: Gao Zuoping Inventor before: Wu Bo Inventor before: Wang Zhenyu Inventor before: Zhang Chang Inventor before: Li Zhiqiang Inventor before: Cheng Haihua |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Jucheng scientific research building, No.4, wudayuan Road, Wuda Science Park, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Patentee after: Wuhan Jucheng Structure Group Co.,Ltd. Address before: Jucheng scientific research building, No.4, wudayuan Road, Wuda Science Park, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Patentee before: WUDA JUCHENG STRUCTURE Co.,Ltd. |