CN206736895U - A kind of joint bar repairing type CFG stakes - Google Patents
A kind of joint bar repairing type CFG stakes Download PDFInfo
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- CN206736895U CN206736895U CN201621300668.9U CN201621300668U CN206736895U CN 206736895 U CN206736895 U CN 206736895U CN 201621300668 U CN201621300668 U CN 201621300668U CN 206736895 U CN206736895 U CN 206736895U
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Abstract
The utility model discloses a kind of joint bar repairing type CFG stakes, including pile body, the pile body is internally provided with drilling, the bore inner is provided with reinforcing bar, layer of slurry is filled between the reinforcing bar and the drilling, Guamishi is filled with inside the layer of slurry, the layer of slurry is made up of portland cement and water, and the ratio of portland cement and water is 0.45：1, a diameter of 20mm of the reinforcing bar, length 2m, 1m below the defects of depth of the drilling is pile body position, the aperture of the drilling is 96mm.The utility model is built into reinforcing bar in the hole that pile body drills, and adds bending resistance shear resistance at broken pile, improves the transmission of the globality and power of broken pile.
Description
Technical field
The utility model belongs to composite foundation technology, is related to the repairing and reinforcing to CFG stake broken pile rejected regions.
Background technology
CFG stakes are English Cement Fly-ash Gravel abbreviations, CFG are meant, by rubble, stone
Bits, sand, flyash mixed cement plus water mix and stir, and have the variable intensity stake of some strength made of various forming machinery.In recent years
Come, CFG stakes have been widely used in skyscraper, are first carried out the construction of CFG stakes in engineer applied mostly, are then just carried out foundation ditch
Excavate.Due to CFG stakes not configuration reinforcement, belong to fragility stake, anti-bending strength is very poor, when excavating with cutting stake, often results in broken pile
Phenomenon, influence the bearing capacity and uniformity of ground.The method of processing for broken pile, piling and pile extension can preferably be handled and asked
Topic, but quantities is big, and cost is high, long in time limit, and now using less, and the method for conventional slip casting can not strengthen at broken pile
Shear behavior, research of the durability also without correlation.
Utility model content
The purpose of this utility model is to propose a kind of joint bar repairing type CFG stakes, and the program can be completed preferably to broken pile
The processing at place, extend the service life of CFG stakes.
Technical scheme used by the utility model：A kind of joint bar repairing type CFG stakes, including pile body, the pile body
Drilling is internally provided with, the bore inner is provided with reinforcing bar, and layer of slurry is filled between the reinforcing bar and the drilling, described
Guamishi is filled with inside layer of slurry.
Preferably, the layer of slurry is made up of portland cement and water.
Preferably, the ratio of portland cement and water is 0.45：1.
Preferably, a diameter of 20mm of the reinforcing bar, length 2m.
Preferably, 1m below the defects of depth of the drilling is pile body position.
Preferably, the aperture of the drilling is 96mm.
Compared with prior art, the beneficial effects of the utility model are：The utility model drills in pile body, and in hole
Reinforcing bar is inserted, layer of slurry is filled between reinforcing bar and the drilling, is filled with Guamishi inside the layer of slurry, increase is resolved
Bending resistance shear resistance at stake, improves the transmission of the globality and power of broken pile；Meanwhile constructing operation of the present utility model is simple,
Place strong adaptability, permeability is strong under pressure for slurries, effectively can fill and reinforce crack.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The technical solution of the utility model is further illustrated with reference to specific embodiment.
As shown in figure 1, a kind of joint bar repairing type CFG stakes, including pile body 1, the pile body 1 are internally provided with drilling 2,
The drilling 2 is internally provided with reinforcing bar 3, is filled with layer of slurry 4 between the reinforcing bar 3 and the drilling 2, in the layer of slurry 4
Portion is filled with Guamishi.
In concrete technical scheme of the present utility model, the layer of slurry 4 is made up of portland cement and water, silicate cement
The ratio of mud and water is 0.45：1, a diameter of 20mm of the reinforcing bar 3, length 2m, depth the lacking for pile body 1 of the drilling 2
1m below position is fallen into, the aperture of the drilling 2 is 96mm.
The utility model is built into reinforcing bar 3 in hole in pile body drilling 2, is filled between reinforcing bar 3 and the drilling 2
There is layer of slurry 4, the inside of layer of slurry 4 is filled with Guamishi, adds bending resistance shear resistance at broken pile, improve the whole of broken pile
The transmission of body and power；Meanwhile constructing operation of the present utility model is simple, place strong adaptability, slurries ooze under pressure
Permeability is strong, effectively can fill and reinforce crack.
A kind of manufacture method of joint bar repairing type CFG stakes of the utility model, comprises the following steps：
S1：Using geological drilling rig in the drilling of CFG stakes pile center position, aperture 96mm, drilling depth to defective locations with
At lower 1m.
S2：Drilled, washed after the completion of drilling using high-pressure washing, be put into diameter 20mm, length 2m reinforcing bar.
S3：The tripping in Grouting Pipe in hole, installs pipe-line system, and using 42.5R Portland cements, water is than 0.45：
1, the slurries prepared are poured into hole until aperture with certain pressure (about 0.4MPa) by pipeline and return out neat slurry, and
After 2~5min of voltage stabilizing, terminate slip casting.
S4：Fill out filling Guamishi：Guamishi must be cleaned, and with concentrated water mud and mix, and in batches a small amount of repeatedly slowly input has been noted
In the drilling of slurry, fill out fill during can be used vibrating head shake pouring, make its rockfill aggregate sink and it is closely knit, to strengthen slip casting
The intensity of body.
The utility model is described in detail by taking concrete engineering as an example below.The proposed 6 20 floor houses of certain engineering, are all provided with
Put 1 layer of basement, about 68.2 meters of building general height.This engineering foundation uses CFG pile composite foundations, totally 1878, the long 20m of stake,
Concrete strength of pile is C25, and stake footpath is 500mm, and the Bearing Capacity of Composite Foundation characteristic value after processing is 280kpa.CFG stakes are applied
Excavation pit after the completion of work, the phenomenon that broken pile be present is had found during excavation.By low strain integrity testing, discovery has 152
Fracture be present in stake.
Method of the present utility model is employed to broken pile to handle：Drilled using geological drilling rig in broken pile center,
Aperture is 96mm, below drilling depth to defective locations at 1m；After water under high pressure hole flushing, diameter 20mm, length 2m steel are put into
Muscle；The lower Grouting Pipe in hole, using 42.5R Portland cements, water ratio uses 0.45：1, device to hole is interior to carry out slip casting, reaches
After slip casting ending standard, a certain amount of Guamishi is put into hole, to strengthen the intensity of injecting cement paste.
After the completion of broken pile treatment, it have chosen 10 broken pile positions and carry out composite foundation plate detection, bearing capacity
Characteristic value is satisfied by design requirement.
For those skilled in the art, technical scheme that can be as described above and design, make other each
Kind is corresponding to be changed and deforms, and all these change and deformed the guarantor that should all belong to the utility model claims
Within the scope of shield.
Claims (5)
1. a kind of joint bar repairing type CFG stakes, including pile body, it is characterised in that：The pile body is internally provided with drilling, described
Bore inner is provided with reinforcing bar, and layer of slurry is filled between the reinforcing bar and the drilling, melon is filled with inside the layer of slurry
Meter Shi.
A kind of 2. joint bar repairing type CFG stakes according to claim 1, it is characterised in that：The layer of slurry is by silicate cement
Mud is made.
A kind of 3. joint bar repairing type CFG stakes according to claim 1, it is characterised in that：A diameter of 20mm of the reinforcing bar,
Length 2m.
A kind of 4. joint bar repairing type CFG stakes according to claim 1, it is characterised in that：The depth of the drilling is stake sheet
The defects of body position lower section 1m.
A kind of 5. joint bar repairing type CFG stakes according to claim 1, it is characterised in that：The aperture of the drilling is 96mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621300668.9U CN206736895U (en) | 2016-11-30 | 2016-11-30 | A kind of joint bar repairing type CFG stakes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621300668.9U CN206736895U (en) | 2016-11-30 | 2016-11-30 | A kind of joint bar repairing type CFG stakes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206736895U true CN206736895U (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621300668.9U Active CN206736895U (en) | 2016-11-30 | 2016-11-30 | A kind of joint bar repairing type CFG stakes |
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| CN (1) | CN206736895U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086312A (en) * | 2017-12-25 | 2018-05-29 | 山东省建筑科学研究院 | A kind of CFG bracing means and method |
-
2016
- 2016-11-30 CN CN201621300668.9U patent/CN206736895U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086312A (en) * | 2017-12-25 | 2018-05-29 | 山东省建筑科学研究院 | A kind of CFG bracing means and method |
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