CN208309580U - A kind of uplift pile by post-tensioning method being used in combination with pile body grouting behind shaft or drift lining - Google Patents
A kind of uplift pile by post-tensioning method being used in combination with pile body grouting behind shaft or drift lining Download PDFInfo
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- CN208309580U CN208309580U CN201820918997.2U CN201820918997U CN208309580U CN 208309580 U CN208309580 U CN 208309580U CN 201820918997 U CN201820918997 U CN 201820918997U CN 208309580 U CN208309580 U CN 208309580U
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- reinforcing steel
- uplift pile
- presstressed reinforcing
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- pile
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Abstract
The utility model discloses a kind of uplift pile by post-tensioning method being used in combination with pile body grouting behind shaft or drift lining, drip irrigation device includes uplift pile main body and is embedded in the intracorporal reinforcing rib of uplift pile master along the pre-buried Grouting Pipe of uplift pile main body length direction and interval；The pulp inlet of the Grouting Pipe is located at the upper surface of uplift pile main body；Cement slurry column is cast in the Grouting Pipe；Presstressed reinforcing steel is plugged in the Grouting Pipe；The presstressed reinforcing steel includes the anchoring section being plugged in cement slurry column and the free segment on the upside of cement slurry column；The uplift pile main body is provided with the locked component locked to presstressed reinforcing steel at upper end.The presstressed reinforcing steel that can be arranged can apply prestressing force to uplift pile main body, to reduce the method phase tensile stress of uplift pile main body normal section, to to the uplift pile main body for having demand of anti-crack, the quantity of reinforcement of reinforcing rib can be greatly lowered, saved material, reduce project cost.
Description
Technical field
The utility model relates to pile foundation engineering field, more particularly to it is a kind of be used in combination with pile body grouting behind shaft or drift lining after
Open method uplift pile.
Background technique
The main function mechanism of uplift pile is to resist axial tension by the frictional force of pile body and soil layer.Such as anchoring pile resists
Floating stake etc..
Uplift pile can install steel reinforcement cage in stake holes first, concrete is then poured in steel reinforcement cage in pile, from forming
Type uplift pile, in order to increase tensile strength, plays the resistance of Pile side soil body resistance to plucking side during making uplift pile to the maximum extent
Power, usually the meeting built-in slip casting pipe when forming uplift pile pass through the casting cement slurry into Grouting Pipe and increase rubbing between the soil body
Power is wiped, it is long so as to shorten stake.
At the same time, in order to meet pile body resistance to plucking and demand of anti-crack, it will usually a considerable amount of reinforcing bars are configured in stake,
Increase the tensile strength of overall pulling test stake by the reinforcing bar configured.
But it is practical in process of production, meet the actual quantity of reinforcement of demand of anti-crack compared to meeting anti-pulling capacity
It is required that quantity of reinforcement it is much greater, so that serious increase project cost.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide one kind to make in conjunction with pile body grouting behind shaft or drift lining
Uplift pile by post-tensioning method can apply prestressing force to uplift pile main body, to reduce resistance to plucking by the presstressed reinforcing steel of setting
The method phase tensile stress of stake main body normal section, so that matching for reinforcing rib can be greatly lowered to the uplift pile main body for having demand of anti-crack
Muscle amount, has saved material, reduces project cost.
To achieve the above object, the utility model provides following technical solution:
A kind of uplift pile by post-tensioning method being used in combination with pile body grouting behind shaft or drift lining, including uplift pile main body and along uplift pile master
The pre-buried Grouting Pipe in body length direction and interval are embedded in the intracorporal reinforcing rib of uplift pile master；The pulp inlet of the Grouting Pipe
Positioned at the upper surface of uplift pile main body；Cement slurry column is cast in the Grouting Pipe；Prestressing force is plugged in the Grouting Pipe
Muscle；The presstressed reinforcing steel includes the anchoring section being plugged in cement slurry column and the free segment on the upside of cement slurry column；It is described anti-
Pile pulling main body is provided with the locked component locked to presstressed reinforcing steel at upper end.
By using above-mentioned technical proposal, the cement slurry column being poured by the Grouting Pipe of setting and in Grouting Pipe can
To reinforce uplift pile ontology, meanwhile, by the presstressed reinforcing steel and locked component of grafting, pass through the freedom to presstressed reinforcing steel
Section applies prestressing force, improves uplift pile method phase tensile stress when in use so as to apply prestressing force to uplift pile main body and holds
Carrying capacity has saved material, has reduced project cost so as to reduce the implantation quantity of reinforcing rib.
Preferably, the Grouting Pipe is at least provided with two；And presstressed reinforcing steel is both provided in every Grouting Pipe.
Preferably, being set with slurry batching pig on the presstressed reinforcing steel, the slurry batching pig is ring structure；The water
The side of the slurry batching pig far from pulp inlet is arranged in mud column.
Preferably, the slurry batching pig is arranged in presstressed reinforcing steel close to pulp inlet side, and apart from presstressed reinforcing steel top
At 4m-5m.
Cement slurry column can be isolated by using above-mentioned technical proposal by the slurry batching pig of setting, so that
There is no cement grout close to pulp inlet side, so that one section of presstressed reinforcing steel that can provide prestressed stretch-draw deformation is formed, and slurry
The presstressed reinforcing steel of batching pig lower end is fixed in cement slurry column, when drawing presstressed reinforcing steel, can be played to presstressed reinforcing steel fixed
Effect, meanwhile, it can be to presstressed reinforcing steel by slurry batching pig when being implanted into presstressed reinforcing steel by the slurry batching pig of setting
Play the role of being centered about, after being implanted into presstressed reinforcing steel, can preferably keep middle position.
Preferably, the diameter of the presstressed reinforcing steel is less than slip casting bore 1.5cm or more.
It can by the way that the diameter of presstressed reinforcing steel is set smaller than muscle 1.5cm in Grouting Pipe by using above-mentioned technical proposal
To facilitate presstressed reinforcing steel to be preferably implanted into Grouting Pipe, at the same time, as long as presstressed reinforcing steel is capable of providing the prestressing force of setting.
Preferably, the locked component includes being arranged in the uplift pile main body and answering close to the pre- of one end of pulp inlet
Power muscle gasket and the anchorage being arranged on the presstressed reinforcing steel, the presstressed reinforcing steel gasket are socketed on the presstressed reinforcing steel；
The diameter of the presstressed reinforcing steel gasket is greater than the diameter of the Grouting Pipe；The anchorage is fixed on presstressed reinforcing steel gasket far from slip casting
The one side of pipe.
It is answered in advance by the prestressing force gasket and anchorage of setting to presstressed reinforcing steel application by using above-mentioned technical proposal
After power, presstressed reinforcing steel can be fixed.
Preferably, one end of the uplift pile main body and close pulp inlet is provided with waterproof layer.
Water-proofing treatment can be carried out to uplift pile appearance by the waterproof layer of setting by using above-mentioned technical proposal, prevented
Only underground water enters within uplift pile main structure basis along presstressed reinforcing steel, causes uplift pile main structure waterproof failure.
In conclusion the utility model has the following beneficial effects:
1, pile body grouting process is combined with post-stressed technique, dexterously using pile body Grouting Pipe as answering in advance
Power muscle is implanted into channel, while providing bond stress by slurry in Grouting Pipe, to realize that presstressed reinforcing steel body is implanted into and applies prestressing force；
2, pile body normal section normal direction shearing stress is eliminated by applying prestressing force, for there is the uplift pile main body of demand of anti-crack
Design reinforcement amount can be greatly reduced, to reduce project cost, save material；
3, the implantation of presstressed reinforcing steel and tensioning fixation are carried out after uplift pile main body slip casting, which constructs not in key lines
On the road, constructing operation is not take up construction site, without using heavy mechanical equipment, conducive to implementing and not increasing the duration；
4, by the slurry batching pig of setting, cement slurry column can be isolated, so that not having close to pulp inlet side
Cement grout, so that one section of presstressed reinforcing steel that can provide prestressed stretch-draw deformation is formed, and the prestressing force of slurry batching pig lower end
Muscle is fixed in cement slurry column, and when drawing presstressed reinforcing steel, fixed effect can be played to presstressed reinforcing steel, meanwhile, pass through setting
Slurry batching pig can play the role of being centered about to presstressed reinforcing steel by slurry batching pig when being implanted into presstressed reinforcing steel,
After being implanted into presstressed reinforcing steel, middle position can be preferably kept.
Detailed description of the invention
Fig. 1 is the overall structure diagram of uplift pile main body；
Fig. 2 is the top view of uplift pile main body；
Fig. 3 is the prominent schematic diagram that waterproof layer is covered in uplift pile main body；
Fig. 4 be in prominent Fig. 3 A-A to cross-sectional view；
Fig. 5 is the schematic diagram of prominent construction method step 1；
Fig. 6 is the schematic diagram of prominent construction method step 3；
Fig. 7 is the schematic diagram of prominent construction method step 4；
Fig. 8 is the schematic diagram of prominent construction method step 5.
Appended drawing reference: 1, uplift pile main body；2, reinforcing rib；3, Grouting Pipe；31, pulp inlet；32, cement slurry column；4, it answers in advance
Power muscle；41, slurry batching pig；5, locked component；51, presstressed reinforcing steel gasket；52, anchorage；6, waterproof layer.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing, wherein the identical attached drawing of identical components
Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down", " bottom
Face " and " top surface " refer to that the direction in attached drawing, word "inner" and "outside" are referred respectively to towards or away from particular elements geometry
The direction at center.
A kind of uplift pile by post-tensioning method being used in combination with pile body grouting behind shaft or drift lining, referring to figs. 1 and 2, including uplift pile master
Body 1 justifies the circumferentially-spaced reinforcing rib 2 being embedded in it in uplift pile main body 1 and along it and along 1 length of uplift pile main body
The pre-buried Grouting Pipe 3 in direction reinforces uplift pile main body 1 by reinforcing rib 2, promotes the tension of overall pulling test stake main body 1
Intensity by that can be provided with several reinforcing ribs 2, makes it meet expected demand of anti-crack in use.
Wherein, in the actual processing process, in order to increase tensile strength, maximum performance Pile side soil body resistance to plucking side
Resistance is embedded with Grouting Pipe 3 in uplift pile main body 1, wherein Grouting Pipe 3 includes slip casting around pile pipe and pile end grouting pipe, Grouting Pipe
3 at least provided with two.
Wherein, the pulp inlet 31 of slip casting around pile pipe 3 is in the upper end of uplift pile main body 1, and grout outlet is located at uplift pile main body 1
Side wall on, thus, by slip casting around pile pipe 3 can to outside the side wall of uplift pile main body 1 cementing slurries, to increase a side
Resistance increases the tensile strength of uplift pile main body 1.
In conjunction with shown in Fig. 3 and Fig. 4, the pulp inlet 31 of pile end grouting pipe 3 is similarly positioned in the upper end of uplift pile main body 1, goes out
The lower end that slurry mouth is located at uplift pile main body 1 can increase uplift pile main body by injecting cement grout into pile end grouting pipe 3
1 bearing capacity between end and stratum.
Wherein, after the slip casting into Grouting Pipe 3, cement slurry column 32 is formed in Grouting Pipe 3, passes through the cement slurry column of formation
32 can to can Grouting Pipe 3 reinforce, Grouting Pipe 3 reinforces uplift pile main body 1, it is whole strong to enhance it
Degree.
More preferably, it is plugged with presstressed reinforcing steel 4 in Grouting Pipe 3 and along its axis direction, presstressed reinforcing steel 4 includes being plugged on water
Anchoring section 42 in mud column 32 and the free segment 43 in 32 upside of cement slurry column；It is provided at 1 upper end of uplift pile main body pair
The locked component 5 that the free segment 43 of presstressed reinforcing steel 4 is locked.
By the way that prestressing force is previously applied to presstressed reinforcing steel 4, so that uplift pile main body 1 is in use, possess for supporting
The tensile stress that the uplift pile main body 1 that disappears is born.At work, after applying prestressing force to presstressed reinforcing steel 4, pass through locked component 5
It is locked.
Wherein, locked component 5 includes the presstressed reinforcing steel for being socketed on presstressed reinforcing steel 4 and being connected to 1 end of uplift pile main body
Gasket 51 and the anchorage 52 gripped on presstressed reinforcing steel 4 to it is set.Prestressing force is being applied to presstressed reinforcing steel 4
When, presstressed reinforcing steel 4 is clamped by anchorage 52, so that presstressed reinforcing steel 4 keeps prestressing force, at the same time, by being socketed in
Presstressed reinforcing steel gasket 51 on presstressed reinforcing steel 4, so that anchorage 52 can be connected on presstressed reinforcing steel gasket 51, thus, so that resistance to plucking
The stress of 1 end of stake main body is more uniform.Preferably, the diameter of presstressed reinforcing steel gasket 51 should be greater than the diameter of Grouting Pipe 3.
It should be understood that the diameter of presstressed reinforcing steel 4 should meet following adjusting, the diameter of presstressed reinforcing steel 4 is less than slip casting
3 internal diameter 1.5cm of pipe or more, thus, after slip casting, in grafting presstressed reinforcing steel 4, it is relatively easy to.At the same time, presstressed reinforcing steel
4 diameter should also meet demand tensile strength, to provide certain prestressing force.
Further, slurry batching pig 41 is set on presstressed reinforcing steel 4, wherein slurry batching pig 41 is ring structure,
And presstressed reinforcing steel 4 is arranged in close to one end of pulp inlet 31 in slurry batching pig 41, and apart from presstressed reinforcing steel 4 close to pulp inlet 31 1
The distance at end is 4m-5m, is cast in side of the slurry batching pig 41 far from pulp inlet 31 in cement slurry column 32, thus, in slurry
Batching pig 41 is formed with certain space around the side of pulp inlet 31, presstressed reinforcing steel 4 so that presstressed reinforcing steel 4 have it is certain
Prestressing force deformation.
After construction finishes, waterproof layer 6 can be set in 1 upper end of uplift pile main body, wherein waterproof layer 6 can be painting
If cement mortar.By the waterproof layer 6 of setting, water-proofing treatment can be carried out to 1 appearance of uplift pile main body, prevent underground water suitable
Presstressed reinforcing steel 4 enters within 1 structure basis of uplift pile main body, and 1 structurally waterproof of uplift pile main body is caused to fail.
By setting in presstressed reinforcing steel 4, prestressing force is applied to uplift pile main body 1, one end is held by the offer of cement slurry column 32
Power is wrapped up in, the other end is fixed by anchorage 52, realizes the implantation of presstressed reinforcing steel 4 and apply prestressing force, to reduce anti-
The method phase tensile stress of 1 normal section of pile pulling main body, so that reinforcing rib 2 can be greatly lowered to the uplift pile main body 1 for having demand of anti-crack
Quantity saved material to reduce project cost.
Embodiment two
A kind of construction method for the uplift pile by post-tensioning method being used in combination with pile body grouting behind shaft or drift lining, including construction procedure once:
Step 1: production uplift pile main body 1, built-in slip casting pipe 3, and pile body slip casting is completed in Grouting Pipe 3；
Step 2: slurry batching pig 41 is socketed on presstressed reinforcing steel 4；
Step 3: being implanted into presstressed reinforcing steel 4 along Grouting Pipe 3；
Step 4: chiseling pile head to design stake top absolute altitude applies prestressing force to presstressed reinforcing steel 4 and is locked to design locking and draws
Force value；
Step 5: water-proofing treatment is carried out to 1 pile crown of uplift pile main body.
As shown in figure 5, in step 1, built-in slip casting pipe 3 in process of uplift pile main body 1, the slip casting into Grouting Pipe 3.
As shown in fig. 6, in step 2, one end on presstressed reinforcing steel 4 and close to pile crown, slurry is arranged in slurry batching pig 41
The 4 top 4m-5m of presstressed reinforcing steel of the specific pile crown one end of body batching pig 41.By the slurry batching pig 41 of setting, in presstressed reinforcing steel 4
It is divided into two parts, a part is implanted into the cement grout in Grouting Pipe 3, and another part applies prestressing force.
In step 3, after casting cement slurries, it is implanted into presstressed reinforcing steel 4, wherein presstressed reinforcing steel 4 is long along Grouting Pipe 3
Spend direction implantation, wherein the time of implantation should not be later than the presetting period of slurry after slip casting, and it is difficult to avoid implantation.Wherein,
In implantation process, slurry batching pig 41 plays the role of that slurry is isolated, meanwhile, play the role of being centered about, so that answering in advance
Power muscle 4 is able to maintain middle position during implantation.
As shown in fig. 7, in step 4, prestressed muscle gasket 51 and anchorage 52 on the presstressed reinforcing steel 4 at pile crown,
To be locked to presstressed reinforcing steel 4.It is fixed by the presstressed reinforcing steel 4 after 52 pairs of anchorage application prestressing force of setting, meanwhile,
It can make 1 end of uplift pile main body while support is fixed to anchorage 52 by padding the presstressed reinforcing steel gasket 51 set
Bearing capacity it is more uniform.
As shown in figure 8, step 5 does water-proofing treatment at stake end, wherein water-proofing treatment can lead to after applying prestressing force
Cross the rigid waterproof layer 6 for mixing waterproofing agent composition with materials such as concrete, cement mortar or simultaneously.
Have the advantages that by the above construction method:
1, more mature pile body grouting process is combined with post-stressed technique, dexterously utilizes pile body slip casting
Pipe 3 is implanted into channel as presstressed reinforcing steel 4, while providing bond stress by slurry in Grouting Pipe 3, to realize that 4 body of presstressed reinforcing steel is planted
Enter and apply prestressing force, principle is ingenious, structurally reasonable.
2, the utility model can eliminate pile body normal section normal direction shearing stress, for there is the uplift pile main body 1 of demand of anti-crack
Design reinforcement amount can be greatly reduced, to reduce project cost, save material.
3, the implantation of presstressed reinforcing steel 4 and tensioning fixation are carried out after 1 slip casting of uplift pile main body, which constructs not in key
On route, constructing operation is not take up construction site, without using heavy mechanical equipment, conducive to implementing and not increasing the duration.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (7)
1. a kind of uplift pile by post-tensioning method being used in combination with pile body grouting behind shaft or drift lining, it is characterised in that: including uplift pile main body (1), with
And the reinforcement being embedded in uplift pile main body (1) along the pre-buried Grouting Pipe (3) of uplift pile main body (1) length direction and interval
Muscle (2)；The pulp inlet (31) of the Grouting Pipe (3) is located at the upper surface of uplift pile main body (1)；Casting in the Grouting Pipe (3)
There are cement slurry column (32)；
Presstressed reinforcing steel (4) are plugged in the Grouting Pipe (3)；The presstressed reinforcing steel (4) includes being plugged on cement slurry column (32)
Interior anchoring section (42) and the free segment (43) on the upside of cement slurry column (32)；It is arranged at uplift pile main body (1) upper end
There is the locked component (5) locked to presstressed reinforcing steel (4).
2. the uplift pile by post-tensioning method according to claim 1 being used in combination with pile body grouting behind shaft or drift lining, it is characterized in that: the slip casting
(3) are managed at least provided with two；And presstressed reinforcing steel (4) are both provided in every Grouting Pipe (3).
3. the uplift pile by post-tensioning method according to claim 2 being used in combination with pile body grouting behind shaft or drift lining, pre- answered it is characterized in that: described
It is set on power muscle (4) slurry batching pig (41), the slurry batching pig (41) is ring structure；The cement slurry column (32) sets
Set the side in the slurry batching pig (41) far from pulp inlet (31).
4. the uplift pile by post-tensioning method according to claim 3 being used in combination with pile body grouting behind shaft or drift lining, it is characterized in that:
Slurry batching pig (41) setting is pushed up in presstressed reinforcing steel (4) close to pulp inlet (31) side, and apart from presstressed reinforcing steel (4)
It holds at 4m-5m.
5. the uplift pile by post-tensioning method according to claim 1 being used in combination with pile body grouting behind shaft or drift lining, it is characterized in that:
The diameter of the presstressed reinforcing steel (4) is less than Grouting Pipe (3) internal diameter 1.5cm or more.
6. the uplift pile by post-tensioning method according to claim 1 being used in combination with pile body grouting behind shaft or drift lining, it is characterized in that:
The locked component (5) includes that one end pre- of the setting on the uplift pile main body (1) and close to pulp inlet (31) answers
Power muscle gasket (51) and the anchorage (52) being arranged on the presstressed reinforcing steel (4), the presstressed reinforcing steel gasket (51) are socketed in
On the presstressed reinforcing steel (4)；
The diameter of the presstressed reinforcing steel gasket (51) is greater than the diameter of the Grouting Pipe (3)；The anchorage (52) is fixed on pre- answer
One side of the power muscle gasket (51) far from Grouting Pipe (3).
7. the uplift pile by post-tensioning method according to claim 1 being used in combination with pile body grouting behind shaft or drift lining, it is characterized in that:
One end of the uplift pile main body (1) and close pulp inlet (31) is provided with waterproof layer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820918997.2U CN208309580U (en) | 2018-06-13 | 2018-06-13 | A kind of uplift pile by post-tensioning method being used in combination with pile body grouting behind shaft or drift lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820918997.2U CN208309580U (en) | 2018-06-13 | 2018-06-13 | A kind of uplift pile by post-tensioning method being used in combination with pile body grouting behind shaft or drift lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208309580U true CN208309580U (en) | 2019-01-01 |
Family
ID=64708241
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820918997.2U Expired - Fee Related CN208309580U (en) | 2018-06-13 | 2018-06-13 | A kind of uplift pile by post-tensioning method being used in combination with pile body grouting behind shaft or drift lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208309580U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643175A (en) * | 2018-06-13 | 2018-10-12 | 北京市地质工程公司 | A kind of uplift pile by post-tensioning method being used in combination with pile body grouting behind shaft or drift lining and its construction method |
| CN111519669A (en) * | 2020-04-30 | 2020-08-11 | 中国一冶集团有限公司 | Prestressed uplift pile waterproof structure and construction method thereof |
-
2018
- 2018-06-13 CN CN201820918997.2U patent/CN208309580U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643175A (en) * | 2018-06-13 | 2018-10-12 | 北京市地质工程公司 | A kind of uplift pile by post-tensioning method being used in combination with pile body grouting behind shaft or drift lining and its construction method |
| CN108643175B (en) * | 2018-06-13 | 2024-03-22 | 北京市地质工程公司 | Rear Zhang Fakang pile pulling combined with pile body rear grouting and construction method thereof |
| CN111519669A (en) * | 2020-04-30 | 2020-08-11 | 中国一冶集团有限公司 | Prestressed uplift pile waterproof structure and construction method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Geotechnical Engineering Association Assignor: BEIJING GEO-ENGINEERING Co. Contract record no.: X2021990000087 Denomination of utility model: A post tensioned uplift pile combined with grouting behind the pile Granted publication date: 20190101 License type: Exclusive License Record date: 20210205 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190101 |
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| CF01 | Termination of patent right due to non-payment of annual fee |