CN1056432C - Jeting pipeline sinking pile making method - Google Patents
Jeting pipeline sinking pile making method Download PDFInfo
- Publication number
- CN1056432C CN1056432C CN 96109873 CN96109873A CN1056432C CN 1056432 C CN1056432 C CN 1056432C CN 96109873 CN96109873 CN 96109873 CN 96109873 A CN96109873 A CN 96109873A CN 1056432 C CN1056432 C CN 1056432C
- Authority
- CN
- China
- Prior art keywords
- pipe
- pile
- stake
- pipes
- mortar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The method of the present invention has the steps that a pile pipe of which the outer wall is connected with a plurality of mortar jetting pipes is used, and jet nozzles which faces outward are arranged at the bottom end of each grouting pipe; a valve immersed tube pile machine rams the pile pipes underground; steel reinforcement cages and mortar pressing pipes are put into the pile pipes; graded aggregate is filled into the pile pipes; sand mortar or slurry is pressed into the pile pipes through the mortar pressing pipes in the pile pipes; the mortar jetting pipes on the outer wall of the pile pipe are connected; when the pile pipe is lifted, a high pressure mortar feeding pump fills high pressure cement mortar into the mortar jetting pipe on the outer wall of the pile pipe until the pile pipe is lifted to the ground surface. The present invention uses two technologies of pipe sinking filling and high pressure jetting to form piles simultaneously, so that a formed pile not only has high strength but also has high bearing capacity. Compared with other pile forming methods, the method greatly enhances the bearing load of formed piles every hundred meters under the same geological conditions.
Description
The present invention relates to the preparation method of a kind of flank structure stake, belong to the foundation field.
Pile foundation is widely used in building operations, and many system piling methods are arranged in the world, but that a kind of system piling method no matter all makes every effort to reduce a system stake cost, improves the load-bearing capacity of stake.There is following shortcoming in existing tube-sinking cast-in-situ pile: strength of the mixing pile is big and the frictional resistance that had itself is little; The volume of stake is big and surface area is little, so belong to the stake of poor efficiency type, its pile perimeter resistance is little.
Foundation pile is except that the stake end is supported on the end bearing pile of hard formation, and the bearing capacity of stake is made up of two parts: the one, and pile perimeter resistance, the 2nd, stake end end load.And pile perimeter resistance accounts for more than 80% in total bearing capacity of stake, so will make stake have very high bearing capacity, it is crucial increasing pile perimeter resistance.
Improve the frictional resistance of stake, must take two measures: the one, stake and all soil of stake are combined closely; The 2nd, compaction pile week is native or transform stake week soil, and the intensity of raising stake week soil increases friction factor.
The EP151389A European patent discloses a kind of preparation method with the stake of reinforcing playpipe: it is at first to adopt the method for mud off to bore a stake hole in ground, in the stake hole, be lowered to playpipe, in playpipe, be lowered to conduit again and carry out concrete spouting, after handling the suspension of annulus, implement the pendulum spray and promote.This technology has obviously that technology is loaded down with trivial details, system stake speed is slow, specific area is little, efficient is low, a system stake cost height, mud slime flux cause defectives such as environment pollution.
The objective of the invention is the problem that exists at above-mentioned castinplace pile, proposes the Jeting pipeline sinking pile making method that an a kind of bearing capacity that increases pile perimeter resistance and then make improves greatly.
For reaching above-mentioned purpose, system piling method-Jeting pipeline sinking pile making method that the present invention adopts following immersed tube bored and high compression set spray to combine the steps include:
Adopt outer wall to connect the stake pipe of some shotcrete pipes, the bottom of this shotcrete pipe has direction nozzle outwardly;
Adopt flap valve pipeline sinking pile machine, this pipe is driven underground;
Reinforcing cage, madjack pipe are lowered in the pipe;
In the stake pipe, insert graded aggregate;
Be pressed into mortar or mortar by the madjack pipe in the stake pipe;
Connect the shotcrete pipe of stake pipe outer wall;
When promoting the stake pipe, with the shotcrete pipe perfusion water under high pressure mud of high-pressure injection pump, till the stake pipe rises to ground to stake pipe outer wall.
The cement paste or the mortar that inject in the stake pipe have tamped the space between aggregate in the immersed tube, make the concrete main pile body, and push stake week soil on the one hand from the cement paste of stake pipe outer wall shotcrete pipe ejection, make the increase in density of stake week soil, fuse with the main pile body that forms on the other hand, thereby in the process that promotes immersed tube, form the multiple wing shape heterogeneous body pile body of a band wing from bottom to up gradually, its pile center partly has the same high strength of castinplace pile, and the intensity of its wing part then reduces from the root to the taper gradually.
Because the multiple wing stake has outside outstanding alar part, so a stake and an adhesion that week is native are improved; Because in the process that forms alar part, water under high pressure mud has squeezing action to all soil of stake,, also increased the friction factor of all soil of stake so improved the intensity of stake week soil; Because friction factor that stake week is native and stake all are improved with the adhesion of stake week soil, make pile peripheral friction force improve greatly, so the supporting capacity of feasible stake improves greatly.
The required construction equipment of this method is simple, and the mechanization degree height can be saved a large amount of labour costs, and pile-forming speed is fast, efficient is high.
Describe the present invention below in conjunction with embodiment.
This method step is:
Adopt outer wall to be symmetrically welded the stake pipe of 4 shotcrete pipes, the bottom of every shotcrete pipe has direction nozzle outwardly;
Adopt flap valve pipeline sinking pile machine, this pipe is driven underground;
Reinforcing cage, madjack pipe are lowered in the pipe;
In the stake pipe, insert graded aggregate;
Be pressed into mortar or mortar by the madjack pipe in the stake pipe;
Connect the shotcrete pipe of stake pipe outer wall;
When promoting the stake pipe, be the water under high pressure mud of 20MPa with high-pressure injection pump injection pressure in the shotcrete pipe of stake pipe outer wall, till the stake pipe rises to ground.
To make the multiple wing stake of a Φ 400 like this.
The quantity of the shotcrete pipe of stake pipe outer wall can be determined according to the diameter of system stake, be generally 2～10.Injection pressure should be determined according to the diameter and the stratum soil property situation of system stake in the shotcrete pipe, is generally 10MPa～40MPa.
The performance analysis of the inventive method:
With Φ 400, dark 8 a meters pile is carried out to this analysis and shows, about 200 yuan of the material cost of single sinking concrete filling pile.And after increasing the spray wing, material cost increases by 50 yuan, if pile capacity doubles, so the load efficient born of per hundred yuan of materials will improve 60%.Need not increase equipment, can also overcome former immersed tube method can not be by the defective of layer of sand.
Jeting pipeline sinking pile making method adopts immersed tube bored and two kinds of technologies of high-pressure injection operation simultaneously pile, makes stake that very high intensity not only be arranged, and very high bearing capacity is arranged.Under same geological conditions, calculate by per hundred yuan of loads of being born, compare with other piling method, belong to the heavy duty detergent stake undoubtedly.
Claims (2)
1. Jeting pipeline sinking pile making method the steps include:
Adopt outer wall to connect the stake pipe of some shotcrete pipes, the bottom of this shotcrete pipe has direction nozzle outwardly;
Adopt flap valve pipeline sinking pile machine, this pipe is driven underground;
Reinforcing cage, madjack pipe are lowered in the pipe;
In the stake pipe, insert graded aggregate;
Be pressed into mortar or mortar by the madjack pipe in the stake pipe;
Connect the shotcrete pipe of stake pipe outer wall;
When promoting the stake pipe, with the shotcrete pipe perfusion water under high pressure mud of high-pressure injection pump, till the stake pipe rises to ground to stake pipe outer wall.
2. Jeting pipeline sinking pile making method as claimed in claim 1 is characterized in that: when the shotcrete pipe grout injection of stake pipe outer wall, injection pressure is 10MPa～40MPa with high-pressure injection pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96109873 CN1056432C (en) | 1996-09-26 | 1996-09-26 | Jeting pipeline sinking pile making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96109873 CN1056432C (en) | 1996-09-26 | 1996-09-26 | Jeting pipeline sinking pile making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1150201A CN1150201A (en) | 1997-05-21 |
| CN1056432C true CN1056432C (en) | 2000-09-13 |
Family
ID=5120682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96109873 Expired - Fee Related CN1056432C (en) | 1996-09-26 | 1996-09-26 | Jeting pipeline sinking pile making method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1056432C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100494581C (en) * | 2006-09-26 | 2009-06-03 | 华北建设集团有限公司 | Pipe pile hole maker with concrete bottom sealing, pipe cover and wings and construction process thereof |
-
1996
- 1996-09-26 CN CN 96109873 patent/CN1056432C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1150201A (en) | 1997-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101812843B (en) | Centre grouted poured post-grouting pile construction methods, and grouter and grout injector used thereby | |
| CN206784372U (en) | Injection forming club-footed pile | |
| CN1067453C (en) | Supporting and protecting method for base pit, side slope, flat anchor and spray net | |
| CN102535458A (en) | Reinforced cement-soil anchor bolt and construction method thereof | |
| CN102808407B (en) | Construction method of soft-foundation reinforced concrete cast-in-place pile | |
| CN106996104A (en) | Injection forming club-footed pile and its construction method | |
| CN111455973A (en) | Composite foundation structure of prefabricated solid CFG pile and construction method thereof | |
| CN1621626A (en) | Construction method for concrete pile | |
| CN207582459U (en) | A kind of prefabricated steel-pipe pile of variable cross-section | |
| CN1182301C (en) | Technology for boring and prefabricating cast piles for foundation of building | |
| CN102031780A (en) | Water flushing construction method of static tubular pile of sand pile tip | |
| CN218597130U (en) | Side expands resistance to plucking rubble pile foundation structure that slip casting combines | |
| CN1056432C (en) | Jeting pipeline sinking pile making method | |
| CN113863294B (en) | PHC pipe pile internally provided with pile end grouting device and construction process thereof | |
| CN102828534A (en) | Inclination rectification reinforcing method for disaster damage diseased deep pile foundation building | |
| CN1259604A (en) | Cement earth reinforced composite piling method | |
| CN1461857A (en) | Construction method and its use | |
| CN1243184A (en) | Construction method of high-pressure rotary-jetting bottom-expanding pile | |
| CN217500224U (en) | Grouting device for improving bearing capacity of pile foundation | |
| CN111074936A (en) | Novel retaining wall for inhibiting landslide development and construction method | |
| CN219060055U (en) | Pile end combined compaction grouting system for prefabricated solid pile | |
| CN2538850Y (en) | Pile end paste prepressing device for long screw drilling bored concrete pile and CFG pile | |
| CN212223839U (en) | Composite foundation structure of prefabricated solid CFG pile | |
| CN2716338Y (en) | Protection device for filling concrete in pile foundation construction | |
| CN220486413U (en) | Microporous bored concrete pile rock anchor rod composite foundation of photovoltaic power station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |