CN202767071U - Prestressed pipe pile with post-grouting for pile bottom and pile side - Google Patents
Prestressed pipe pile with post-grouting for pile bottom and pile side Download PDFInfo
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- CN202767071U CN202767071U CN 201220495536 CN201220495536U CN202767071U CN 202767071 U CN202767071 U CN 202767071U CN 201220495536 CN201220495536 CN 201220495536 CN 201220495536 U CN201220495536 U CN 201220495536U CN 202767071 U CN202767071 U CN 202767071U
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- pile
- grouting
- pipe
- back cover
- slurry outlet
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Abstract
The utility model discloses a prestressed pipe pile with post-grouting for pile bottom and pile side. The prestressed pipe pile comprises a plurality of pile segments connected through circular end plates, a grouting device, a pile bottom grouting guide pipe and a plurality of pile side grouting guide pipes, wherein the pile bottom grouting guide pipe and the plurality of pile side grouting guide pipes are connected with the grouting device and extend into the pile segments. The prestressed pipe pile with post-grouting for the pile bottom and the pile side can effectively improve the bearing capacity of the pipe pile, reduce the settling volume of buildings above the pipe pile, and therefore the quantity of used piles is reduced, squeezing effect is weakened, and harm to surrounding buildings is reduced. The pile body defects generated in a construction process can be repaired by subsequent grouting of the prestressed pipe pile, and the safety of the buildings is guaranteed. In addition, a connector of the pipe pile is protected through pile side grouting, and the using durability of the pipe pile is guaranteed in a certain degree.
Description
Technical field
The utility model relates to the prestressed concrete pipe pile technology in the civil construction project construction, especially at the bottom of a kind of and the pile for prestressed pipe of stake side associating grouting behind shaft or drift lining.
Background technology
In the outer civil construction deep foundation engineering of Now Domestic, the application of prestressed concrete pipe pile is very general, for China's engineering construction provides theoretical foundation and experience.But prestressed concrete pipe pile because of the pile body smooth surface, causes pile side friction effectively not bring into play in deep soft soil layer, and the bearing capacity of prestressed concrete pipe pile can not get effective embodiment.And prestressed concrete pipe pile because job practices is improper, occurs hidden danger of quality at work progress easily, does not often reach needed effect.A large amount of practice data show that prestressed concrete pipe pile the bearing capacity measured value occurs easily less than the situation of design load.After prestressed concrete pipe pile piling, take stake end (at the bottom of the hole) and stake side (hole wall) are implemented pressure associating slip casting measure, make the fringe conditions between soil body mechanical property and the stake soil obtain changing by slip casting, the strength and stability of ground further improves around the stake, thereby the raising bearing capacity of pile foundation reduces settling amount.Therefore can reduce lay out pile quantity and dimension of platform, reduce soil compaction to adjacent all impacts, and shorten the construction period, reduce construction costs.Simultaneously, end plate is exposed in the soil, is subjected to seriously corroded.So how strengthening the stake end intensity of pile tube and strengthening pile side friction is the effective measure that realizes above-mentioned target, through patent retrieval, also there is no the effective measures that address the above problem.
The utility model content
The utility model is intended to overcome the deficiencies in the prior art, provide a kind of at the bottom of stake side associating grouting behind shaft or drift lining pile for prestressed pipe.
In order to achieve the above object, the skill scheme that provides of the utility model is:
Stake side associating grouting behind shaft or drift lining pile for prestressed pipe at the bottom of a kind of, it comprises the some sections pile cutofves that connect by annular end plate, grouting equipment is connected with grouting equipment and passes into pile grouting conduit and many piles side grouting pipe in the pile cutoff;
Described end plate is provided with a plurality of screw thread slurry outlets of radially getting through along annulus, and described end plate inboard is provided with the ring-type high-pressure slip-casting flexible pipe that is in turn connected into by a plurality of side slip casting three way cock; Described stake side slip casting three way cock is connected with threaded steel pipe, and threaded steel pipe is connected with the screw thread slurry outlet; Described stake side grouting pipe is connected with stake side slip casting three way cock top interface; The stake side slip casting three way cock top interface that is not connected with stake side grouting pipe is provided with sealing mechanism;
Pile cutoff bottom, described bottom is provided with the back cover steel plate with center positioning hole, and the back cover steel plate is connected with taper shoe with the C slurry outlet, and taper shoe bottom is provided with pile top; The center positioning hole that described pile grouting conduit passes on the back cover steel plate stretches in the shoe inner chamber; The extension conduit that described pile grouting conduit stretches in the shoe inner chamber is provided with the A injected hole, and described extension catheter jacket has the rubber pipe box, extends the conduit bottom and is provided with A back cover steel disc; Described shoe inboard is provided with interior every steel plate with the B slurry outlet;
Described grouting equipment comprises A cement mixing bucket, and the A cement storage barrel that is connected with A cement mixing bucket is with the A grouting pump that A cement storage barrel is connected, B cement mixing bucket, the B cement storage barrel that is connected with B cement mixing bucket, the B grouting pump that is connected with B cement storage barrel; Described pile grouting conduit is connected with the B grouting pump; Described stake side grouting pipe is connected with the A grouting pump.
In addition, the port of export of described screw thread slurry outlet is provided with the steel sieve; Described threaded steel pipe end is provided with B back cover steel disc, and described threaded steel pipe is provided with the D slurry outlet; Annular space between described screw thread slurry outlet and the threaded steel pipe is provided with rubber case; Described B back cover steel disc is provided with the thin steel bar that prevents that rubber case from coming off; Be provided with the termination ironware between described back cover steel plate and the pile cutoff bottom, bottom; C slurry outlet in the described taper shoe is the cross formation and arranges; Described taper shoe inboard is provided with in 4 of symmetry arrangement every steel plate.Described grouting pipe adopts the GB low-pressure fluid to carry and uses welded pipe, the nominal bore of grouting pipe
, actual wall thickness is not less than 2.75mm, and raw material meet the GB requirement.
Compared with prior art, the beneficial effects of the utility model are:
End plate in the utility model leaves threaded slurry outlet in advance, and another has to tighten with slurry outlet with the steel pipe of slurry outlet and docks with a headband screw thread, and grouting valve is tightened with the second half section screw thread that exceeds the end plate hole and is connected.High-pressure slip-casting flexible pipe and threeway are connected to form annular channels one by one, select one of them threeway to be connected with grouting pipe, other several threeways top interfaces of shutoff.
At the bottom of being provided with in the bottom pile cutoff in the utility model with a stake side grouting pipe, stake bottom end fixing iron member, back cover steel plate and its concrete mutually, the pile grouting conduit extends to the bottom by the back cover steel plate, the rubber pipe box is enclosed within on the Grouting Pipe of extension the back cover steel disc of welding extension grouting pipe, the tapered shoe of prefabricated band slurry outlet, welding is interior every steel plate with slurry outlet, welding back cover steel plate and the taper shoe that processes.
Pile tube of the present utility model can improve the bearing capacity of pile tube effectively, reduces the settling amount of building on it; And can reduce thus with the stake amount, thereby weaken soil compaction effect, alleviate the harm to Adjacent Buildings; The prestressed concrete pipe pile grouting behind shaft or drift lining can be repaired the pile defect that produces at work progress, guarantees safety of building; On the other hand, by the joint formation protection of stake side slip casting to pile tube, guaranteed to a certain extent the durability that pile tube uses.
Make the fringe conditions between soil body mechanical property and the stake soil obtain changing by stake side associating slip casting at the bottom of the stake, the stake end, stake side soil strength are improved simultaneously, the strength and stability of ground further improves around the stake, be equivalent to increase the stake footpath, increase bearing area, thereby the raising bearing capacity of pile foundation increases reverse prestressing force, reduces settling amount.Simultaneously, at stake side head Board position injected hole is set and carries out slip casting, end plate shields in the soil to being exposed to form the slurry package calculus body that protrudes, and makes end plate avoid corrosion, has improved the durability that pile for prestressed pipe uses.Can also reduce lay out pile quantity and dimension of platform on the other hand, and shorten the construction period, reduce construction costs.
In a word, after enforcement is carried out stake end stake side associating slip casting to pile for prestressed pipe, slurries flow out from slurry outlet, surrounding soil there is certain compacted effect, make the fringe conditions between soil body mechanical property and the stake soil obtain changing, the strength and stability of ground further improves around the stake, thereby improves bearing capacity of pile foundation, reduces settling amount.Therefore can reduce lay out pile quantity and dimension of platform, reduce soil compaction to adjacent all impacts, and shorten the construction period, reduce construction costs.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the shoe top view;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is end plate junction top view;
Fig. 5 is the B-B sectional view of Fig. 4;
Fig. 6 is the C-C sectional view of Fig. 4.
Among the figure: 1, pile cutoff; 2, termination ironware; 3, back cover steel plate; 4, rubber neck; 5, A back cover steel disc; 6, taper shoe; 7, interior every steel plate; 8, A slurry outlet; 9, end plate; 10, pile top; 11, screw thread slurry outlet; 12, stake side slip casting three way cock; 13, steel sieve; 14, threaded steel pipe; 15, ring-type high-pressure slip-casting flexible pipe; 16, B slurry outlet; 17, C slurry outlet; 18, B back cover steel disc; 19, rubber case; 20, D slurry outlet; 21, thin steel bar; 101, pile grouting conduit; 102, stake side grouting pipe; 103, A cement mixing bucket; 104, A cement storage barrel; 105, A grouting pump; 106, B cement mixing bucket; 107, B cement storage barrel; 108, B grouting pump.
The specific embodiment
Referring to Fig. 1 to Fig. 6, described pile for prestressed pipe comprises the some sections pile cutofves 1 that connect by annular end plate 9, and grouting equipment is connected with grouting equipment and passes into pile grouting conduit 101 and many piles side grouting pipe 102 in the pile cutoff.
Described end plate 9 is provided with 4 screw thread slurry outlets 11 radially getting through along annulus, and screw thread slurry outlet 11 is 90 ° along annulus and is arranged symmetrically with, and the aperture is 4～5cm; Described end plate 9 inboards are provided with the ring-type high-pressure slip-casting flexible pipe 15 that is in turn connected into by 4 stake side slip casting three way cock 12; Described stake side slip casting three way cock 12 is connected with threaded steel pipe 14, and threaded steel pipe 14 is connected with screw thread slurry outlet 11, and described threaded steel pipe 14 apertures are 2～3cm; Described stake side grouting pipe 102 is connected with stake side slip casting three way cock 12 top interfaces; The stake side slip casting three way cock 12 top interfaces that are not connected with stake side grouting pipe 102 are provided with sealing mechanism; The port of export of described screw thread slurry outlet 11 is provided with the circular steel sieve 13 that diameter is 6～8mm; Described threaded steel pipe 14 ends are provided with B back cover steel disc 18, and described threaded steel pipe 14 is provided with D slurry outlet 20; Annular space between described screw thread slurry outlet 11 and the threaded steel pipe 14 is provided with rubber case 19; Described B back cover steel disc 18 is provided with the thin steel bar 21 that prevents that rubber case 19 from coming off.
Described grouting equipment comprises A cement mixing bucket 103, the A cement storage barrel 104 that is connected with A cement mixing bucket 103, the A grouting pump 105 that is connected with A cement storage barrel 104, B cement mixing bucket 106, the B cement storage barrel 107 that is connected with B cement mixing bucket 106, the B grouting pump 108 that is connected with B cement storage barrel 107; Described pile grouting conduit 101 is connected with B grouting pump 108; Described stake side grouting pipe 102 is connected with A grouting pump 105.
Wherein, the grouting pipe upper end is equipped with gas thread, pipe collar and plug, and stake side grouting pipe lower end is provided with
Screw thread reaches the threeway in order to the stake side grouting valve of pegging graft.The connection of grouting pipe is all adopted by the gas thread of the end of grouting pipe, screw thread pipe collar and is docked; The lower end of grouting pipe (102) the stake side grouting valve (each joint should check its tightness, meet the requirements rear just can carry out next process) of pegging graft.Buried depth General Requirements pile for prestressed pipe according to bearing stratum is comprised of the more piece engineering pile, therefore requires to dock, and first stake is pressed into or squeezes in the soil, and then stake side grouting device is installed, and welds the end plate between two piles again, again drives piles.Repeat above step to pile extension, until stake reaches the bearing stratum of design.
Claims (6)
1. stake side associating grouting behind shaft or drift lining pile for prestressed pipe at the bottom of the stake, it is characterized in that, described pile for prestressed pipe comprises the some sections pile cutofves (1) that connect by annular end plate (9), grouting equipment is connected with grouting equipment and passes into pile grouting conduit (101) and many piles side grouting pipe (102) in the pile cutoff;
Described end plate (9) is provided with a plurality of screw thread slurry outlets (11) of radially getting through along annulus, and described end plate (9) inboard is provided with the ring-type high-pressure slip-casting flexible pipe (15) that is in turn connected into by a plurality of side slip casting three way cock (12); Described stake side slip casting three way cock (12) is connected with threaded steel pipe (14), and threaded steel pipe (14) is connected with screw thread slurry outlet (11); Described stake side grouting pipe (102) is connected with stake side slip casting three way cock (12) top interface; Stake side slip casting three way cock (12) the top interface that is not connected with stake side grouting pipe (102) is provided with sealing mechanism;
Described bottom pile cutoff (1) bottom is provided with the back cover steel plate (3) with center positioning hole, and back cover steel plate (3) is connected with the taper shoe (6) of band C slurry outlet (17), and taper shoe (6) bottom is provided with pile top (10); The center positioning hole that described pile grouting conduit (101) passes on the back cover steel plate (3) stretches in shoe (6) inner chamber; The extension conduit that described pile grouting conduit (101) stretches in shoe (6) inner chamber is provided with A injected hole (8), and described extension catheter jacket has rubber pipe box (4), extends the conduit bottom and is provided with A back cover steel disc (5); Described shoe (6) inboard is provided with the interior every steel plate (7) of band B slurry outlet (16);
Described grouting equipment comprises A cement mixing bucket (103), the A cement storage barrel (104) that is connected with A cement mixing bucket (103), the A grouting pump (105) that is connected with A cement storage barrel (104), B cement mixing bucket (106), the B cement storage barrel (107) that is connected with B cement mixing bucket (106), the B grouting pump (108) that is connected with B cement storage barrel (107); Described pile grouting conduit (101) is connected with B grouting pump (108); Described stake side grouting pipe (102) is connected with A grouting pump (105).
2. pile for prestressed pipe as claimed in claim 1 is characterized in that, the port of export of described screw thread slurry outlet (11) is provided with steel sieve (13); Described threaded steel pipe (14) end is provided with B back cover steel disc (18), and described threaded steel pipe (14) is provided with D slurry outlet (20); Annular space between described screw thread slurry outlet (11) and the threaded steel pipe (14) is provided with rubber case (19).
3. pile for prestressed pipe as claimed in claim 2 is characterized in that, described B back cover steel disc (18) is provided with the thin steel bar (21) that prevents that rubber case (19) from coming off.
4. pile for prestressed pipe as claimed in claim 1 is characterized in that, is provided with termination ironware (2) between described back cover steel plate (3) and bottom pile cutoff (1) bottom.
5. pile for prestressed pipe as claimed in claim 1 is characterized in that, the C slurry outlet (17) in the described taper shoe (6) is the cross formation and arranges.
6. pile for prestressed pipe as claimed in claim 1 is characterized in that, described taper shoe (6) inboard is provided with in 4 of symmetry arrangement every steel plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220495536 CN202767071U (en) | 2012-09-26 | 2012-09-26 | Prestressed pipe pile with post-grouting for pile bottom and pile side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220495536 CN202767071U (en) | 2012-09-26 | 2012-09-26 | Prestressed pipe pile with post-grouting for pile bottom and pile side |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202767071U true CN202767071U (en) | 2013-03-06 |
Family
ID=47773654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220495536 Expired - Fee Related CN202767071U (en) | 2012-09-26 | 2012-09-26 | Prestressed pipe pile with post-grouting for pile bottom and pile side |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202767071U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498467A (en) * | 2013-10-14 | 2014-01-08 | 成军 | High-bearing-capacity foundation pile and processing method for high-bearing-capacity foundation pile and foundation |
| CN104234055A (en) * | 2014-09-24 | 2014-12-24 | 顾孙平 | Precast pile post-grouting device and precast pile post-grouting process |
| CN107794914A (en) * | 2017-10-20 | 2018-03-13 | 宁波大学 | A kind of combination post jacking and the prestressed concrete pipe pile of expanding technology and preparation method thereof |
-
2012
- 2012-09-26 CN CN 201220495536 patent/CN202767071U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498467A (en) * | 2013-10-14 | 2014-01-08 | 成军 | High-bearing-capacity foundation pile and processing method for high-bearing-capacity foundation pile and foundation |
| CN103498467B (en) * | 2013-10-14 | 2015-07-22 | 江苏溧阳城建集团有限公司 | High-bearing-capacity foundation pile and processing method for high-bearing-capacity foundation pile and foundation |
| CN104234055A (en) * | 2014-09-24 | 2014-12-24 | 顾孙平 | Precast pile post-grouting device and precast pile post-grouting process |
| CN104234055B (en) * | 2014-09-24 | 2016-09-14 | 顾孙平 | A kind of prefabricated pile post-grouting device and technique thereof |
| CN107794914A (en) * | 2017-10-20 | 2018-03-13 | 宁波大学 | A kind of combination post jacking and the prestressed concrete pipe pile of expanding technology and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20170926 |