CN216891988U - Make things convenient for anchor extension sleeve deeply that buries of mud jacking - Google Patents
Make things convenient for anchor extension sleeve deeply that buries of mud jacking Download PDFInfo
- Publication number
- CN216891988U CN216891988U CN202220443476.2U CN202220443476U CN216891988U CN 216891988 U CN216891988 U CN 216891988U CN 202220443476 U CN202220443476 U CN 202220443476U CN 216891988 U CN216891988 U CN 216891988U
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- China
- Prior art keywords
- main body
- grouting
- sleeve main
- bridge
- sleeve
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- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 210000002435 tendon Anatomy 0.000 claims abstract description 11
- 239000011148 porous material Substances 0.000 claims abstract description 8
- 238000010276 construction Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
Images
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to the technical field of methods or equipment specially used for erecting or assembling a bridge, and discloses a deep-buried anchor extension sleeve convenient for grouting, which is used for construction of a prestressed bridge; comprises a sleeve main body with one end detachably fixed on an anchor backing plate; the wall of the sleeve main body protrudes outwards at the position of a bus of the sleeve main body to form a grouting pipe channel for a grouting pipe to be led into a pre-stressed pore channel of a bridge, and the end face, close to the anchor backing plate, of the sleeve main body is welded with a connecting flange and is connected with the anchor backing plate through a bolt penetrating through the connecting flange and the anchor backing plate. In the utility model, the cylinder wall of the sleeve main body bulges outwards at a bus position to form a grouting pipe channel for inserting a grouting pipe, so that the grouting pipe cannot be inserted smoothly because the grouting pipe and the prestressed steel strand/prestressed tendon share one channel; meanwhile, because the grouting pipe channel and the sleeve main body are integrated, no extra workload is brought when the anchor is installed and sealed.
Description
Technical Field
The utility model relates to the technical field of methods or equipment specially used for erecting or assembling bridges, in particular to a deep-buried anchor extension sleeve convenient for grouting.
Background
The deep-buried anchor prestressed structure is a structure adopted for ensuring the construction quality of the end face of a beam in a prestressed bridge, in the structure, an anchor backing plate is not parallel and level with the end face of the bridge like a conventional prestressed bridge but is sunk inwards into the bridge, so that after the bridge construction is completed, the concrete opening at the beam end caused by prestressed tension is completely remained in a pit where the anchor backing plate is located, and the pit is filled and leveled during anchor sealing, so that the end face of the bridge with a good appearance can be obtained.
In order to avoid the anchor backing plate from being completely buried in concrete when the bridge is poured, the anchor backing plate of the deeply-buried anchor needs to be provided with an extension sleeve extending to the end mould of the bridge, and the prestressed steel strand/prestressed tendon also penetrates out of the bridge from the extension sleeve. Meanwhile, when grouting, the grouting pipe also needs to enter the prestressed duct of the bridge along the extension sleeve. That is, the grouting pipe and the prestressed steel strand/tendon share one channel, which makes it difficult to insert the grouting pipe into the prestressed duct of the bridge during grouting, because the arrangement of the prestressed steel strand/tendon in the extension sleeve is relatively disordered, it is difficult to just form a gap for the grouting pipe to be directly inserted into the prestressed duct of the bridge. The main solution for this is to enlarge the extension sleeve, or to directly set a pre-buried pipeline leading to the pre-stressed duct of the bridge outside the extension sleeve. However, both of these solutions are not ideal, the former can not solve the problem completely, when the grouting pipe cannot be inserted, some prestressed steel strands or prestressed tendons even need to be cut off, and the latter needs extra workload and material consumption (extra workload is needed not only during installation, but also during anchor sealing, the pipeline needs to be sealed and embedded).
SUMMERY OF THE UTILITY MODEL
The utility model provides a deep-buried anchor extension sleeve convenient for grouting.
The technical problem to be solved is that: in the deep-buried anchor prestressed structure, the grouting pipe and the prestressed steel strand/prestressed tendon share one channel, so that the grouting pipe cannot be smoothly inserted.
In order to solve the technical problems, the utility model adopts the following technical scheme: a deep-buried anchor extension sleeve convenient for grouting is used for construction of a prestressed bridge; the sleeve main body is detachably fixed on the anchor backing plate at one end, horizontally and outwards extends out of the bridge at the other end, is cylindrical, is coaxially arranged with a prestressed duct of the bridge, and is used for prestressed tendons or prestressed steel strands to pass through; the wall of the sleeve main body protrudes outwards at the position of a bus of the sleeve main body to form a grouting pipe channel for a grouting pipe to be communicated with a pre-stressed pore channel of a bridge, and a connecting flange and a flange end are welded on the end face, close to the anchor backing plate, of the sleeve main body and connected with the anchor backing plate through bolts penetrating through the connecting flange and the anchor backing plate.
Furthermore, the flange end is an inclined end face, and a bus of the sleeve main body at the position of the mud jacking pipe channel is the longest bus of the sleeve main body.
Further, the mud jacking pipe passage is disposed at the highest point of the sleeve body after being installed in place.
Further, the inner diameter of the sleeve main body is larger than that of the prestressed duct of the bridge, the anchor backing plate is of a disc-shaped structure with an opening facing the sleeve main body, and a groove for facilitating slurry to enter the prestressed duct of the bridge during grouting is formed in the position where the anchor backing plate is aligned with the grouting pipe passage.
Furthermore, the connecting flange is an inner flange, and a position avoiding opening used for preventing slurry from entering a prestressed pore channel of the bridge when the connecting flange blocks grouting is formed in the position, aligned with the grouting pipe channel, of the connecting flange.
Further, the bolt holes in the connecting flange are waist holes with long axes arranged along the circumferential direction of the flange.
Compared with the prior art, the deep-buried anchor extension sleeve convenient for grouting has the following beneficial effects:
in the utility model, the barrel wall of the sleeve main body is bulged outwards at a bus position to form a grouting pipe channel for inserting the grouting pipe, so that the problem that the grouting pipe cannot be inserted smoothly because the grouting pipe and the prestressed steel strand/prestressed tendon share one channel is avoided; meanwhile, because the grouting pipe channel and the sleeve main body are integrated, no extra workload is brought when the grouting pipe is installed and anchored.
Drawings
FIG. 1 is a first perspective view of a deep anchor extension socket for facilitating grouting according to the present invention;
FIG. 2 is a second perspective view of the extended sleeve of the present invention for a deep anchor that facilitates grouting;
FIG. 3 is a schematic side view of the sleeve body;
wherein, 1-sleeve main body, 11-mud jacking pipe channel, 12-flange end and 2-connecting flange.
Detailed Description
As shown in fig. 1-2, a deep-buried anchor extension sleeve convenient for grouting is used for the construction of a prestressed bridge; the sleeve comprises a sleeve main body 1, one end of which is detachably fixed on an anchor backing plate, and the other end of which horizontally extends out of the bridge, is cylindrical, is coaxially arranged with a prestressed duct of the bridge and is used for prestressed tendons or prestressed steel strands to pass through; the cylinder wall of the sleeve main body 1 protrudes outwards at the position of a bus of the sleeve main body 1 to form a grouting pipe channel 11 for the grouting pipe to be led into a prestressed pore channel of a bridge, and the end face, close to the anchor backing plate, of the sleeve main body 1 is welded with a connecting flange 2 and a flange end 12 and is connected with the anchor backing plate through bolts penetrating through the connecting flange 2 and the anchor backing plate.
Compared with the structure that a parallel pipe is welded outside the sleeve main body 1 to be used as the grouting pipe channel 11, the structure that the grouting pipe channel 11 is communicated with the sleeve main body 1 has the following advantages:
one is that the space in the sleeve body 1 can be utilized, the gaps between the prestressed steel strands/prestressed tendons are smaller and always exist, and the gaps and the space in the grouting pipe channel 11 are quite abundant for the grouting pipe; and secondly, the disassembly is convenient, and if a parallel pipe is welded outside the sleeve main body 1, the concave part between the two pipes can be tightly bitten by concrete, so that the disassembly is difficult.
As shown in fig. 3, the flange end 12 is an inclined end surface, and a generatrix of the sleeve body 1 at the position of the mud pipe passage 11 is the longest generatrix of the sleeve body 1. After being mounted in place, the mud jacking pipe passage 11 is disposed at the highest point of the sleeve body 1. Therefore, when grouting, the slurry falls into the prestressed duct from top to bottom.
When the inner diameter of the sleeve main body 1 is larger than the inner diameter of the prestressed duct of the bridge, when the grouting pipe is inserted into the duct grouting pipe channel 11, the grouting pipe can be pressed against the anchor backing plate, and grouting cannot be smoothly performed, so that the following settings are made here: the anchor backing plate is the dish column structure of opening orientation sleeve main part 1, and the anchor backing plate is offered with the position that the mud jacking pipe passageway 11 aligns and is arranged in the slot that the thick liquids got into the prestressing force pore canal of bridge when making things convenient for the mud jacking, and the anchor backing plate of slot position is sunken to the bridge to avoid the slot to dig the anchor backing plate and wear. Thus, the anchor backing plate can not block the slurry. Here, the inner diameter of the sleeve body 1 refers to the inner diameter of the sleeve body 1 when the slurry pipe passage 11 is not machined.
The attachment flange 2 is an internal flange to reduce the required size of the anchor pad.
A position avoiding opening used for preventing slurry from entering a prestressed hole channel of a bridge when the connecting flange 2 blocks grouting is formed in the position, aligned with the grouting pipe channel 11, of the connecting flange 2.
Bolt holes in the connecting flange 2 are waist holes with long axes arranged along the circumferential direction of the flange, so that the bolts can be conveniently installed.
The using method of the utility model comprises the following steps:
the method comprises the following steps: the utility model is installed on an anchor backing plate, then the anchor backing plate is installed in a bridge mold, sealing is needed between a connecting flange 2 and the anchor backing plate, and a release agent or a backing paper/backing plastic film is needed to be brushed outside a sleeve main body 1;
step two: pouring concrete;
step three: carrying out prestress tension;
step four: inserting the grouting pipe into a grouting pipe channel 11 for grouting;
step five: the utility model is dismantled and then the anchor is sealed.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (6)
1. A deep-buried anchor extension sleeve convenient for grouting is used for construction of a prestressed bridge; the sleeve comprises a sleeve main body (1), one end of the sleeve main body is detachably fixed on an anchor backing plate, the other end of the sleeve main body horizontally extends out of a bridge, is cylindrical, is coaxially arranged with a prestressed duct of the bridge and is used for a prestressed tendon or a prestressed steel strand to pass through; the method is characterized in that: the grouting pipe is characterized in that the cylinder wall of the sleeve main body (1) protrudes outwards at the position of a bus of the sleeve main body (1) to form a grouting pipe channel (11) for the grouting pipe to be led into a pre-stressed pore channel of a bridge, and a connecting flange (2) and a flange end (12) are welded on the end face, close to the anchor backing plate, of the sleeve main body (1) and are connected with the anchor backing plate through bolts penetrating through the connecting flange (2) and the anchor backing plate.
2. The deep-buried anchor extension sleeve facilitating grouting according to claim 1, wherein: the flange end (12) is an inclined end face, and a bus of the sleeve main body (1) at the position of the mud jacking pipe channel (11) is the longest bus of the sleeve main body (1).
3. The deep-buried anchor extension sleeve facilitating grouting according to claim 2, wherein: after being mounted in place, the mud jacking pipe channel (11) is arranged at the highest position of the sleeve main body (1).
4. The deep-buried anchor extension sleeve facilitating grouting according to claim 3, wherein: the inner diameter of the sleeve main body (1) is larger than that of a prestressed pore passage of the bridge, the anchor backing plate is of a plate-shaped structure with an opening facing the sleeve main body (1), and a groove used for facilitating slurry to enter the prestressed pore passage of the bridge during grouting is formed in the position where the anchor backing plate is aligned with the grouting pipe passage (11).
5. The deep-buried anchor extension sleeve facilitating grouting according to claim 1, wherein: the connecting flange (2) is an inner flange, and a position avoiding opening used for preventing slurry from entering a prestressed hole channel of a bridge when the connecting flange (2) blocks grouting is formed in the position, aligned with the grouting pipe channel (11), of the connecting flange (2).
6. The deep-buried anchor extension sleeve facilitating grouting according to claim 1, wherein: bolt holes in the connecting flange (2) are waist holes with long axes arranged along the circumferential direction of the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220443476.2U CN216891988U (en) | 2022-03-02 | 2022-03-02 | Make things convenient for anchor extension sleeve deeply that buries of mud jacking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220443476.2U CN216891988U (en) | 2022-03-02 | 2022-03-02 | Make things convenient for anchor extension sleeve deeply that buries of mud jacking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216891988U true CN216891988U (en) | 2022-07-05 |
Family
ID=82187133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220443476.2U Expired - Fee Related CN216891988U (en) | 2022-03-02 | 2022-03-02 | Make things convenient for anchor extension sleeve deeply that buries of mud jacking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216891988U (en) |
-
2022
- 2022-03-02 CN CN202220443476.2U patent/CN216891988U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |