CN206591516U - PHC pile tube composite piles - Google Patents
PHC pile tube composite piles Download PDFInfo
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- CN206591516U CN206591516U CN201621091675.2U CN201621091675U CN206591516U CN 206591516 U CN206591516 U CN 206591516U CN 201621091675 U CN201621091675 U CN 201621091675U CN 206591516 U CN206591516 U CN 206591516U
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- prestressed pipe
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Abstract
The utility model is related to a kind of PHC pile tubes composite pile, belong to technical field of building construction, it is simple there is provided one kind construction, low cost, effectively improve the PHC pile tube composite piles of prestressed pipe pile bearing capacity, the technical scheme used is pressed into foundation soil supporting course for pile for prestressed pipe in advance, pile for prestressed pipe bottom is provided with the soil cement enlarged footing formed after slip casting, metalling is provided with soil cement enlarged footing, metalling is extended in pile for prestressed pipe, microdilatancy pea gravel concreten layer is from top to bottom disposed with pile for prestressed pipe and microlith mixes stone flour layer, the utility model is widely used in PHC pile tubes.
Description
Technical field
The utility model is related to a kind of PHC pile tubes composite pile, belongs to technical field of building construction.
Background technology
Pile for prestressed pipe is prefabrication reinforced concrete member, as house foundation bearing capacity component, and its intensity is high, holds
Carry power strong.But if if bearing capacity of foundation slab is weaker, effective length is too short, requirement for bearing capacity can not be met, effective length is too
It is long then uneconomical；Simultaneously pile for prestressed pipe for friction end-bearing pile, due to stake end area is too small and end resistance is smaller, influence prestressing force
The bearing capacity of pile tube.
Utility model content
To solve the technical problem that prior art is present, the utility model provides a kind of simple, low cost of constructing, effectively
Improve the PHC pile tube composite piles of prestressed pipe pile bearing capacity.
To achieve the above object, the technical scheme that the utility model is used is PHC pile tube composite pile, including prestressed pipe
Stake, the pile for prestressed pipe is pressed into foundation soil supporting course in advance, and the pile for prestressed pipe bottom is provided with the cement formed after slip casting
Be provided with metalling in native enlarged footing, the soil cement enlarged footing, the metalling is extended in pile for prestressed pipe, it is described it is pre- should
Microdilatancy pea gravel concreten layer is from top to bottom disposed with solenoid stake and microlith mixes stone flour layer.
Described microdilatancy pea gravel concreten floor height is in level of ground water.
Described cement enlarged footing is made up of cement puddled soil and rubble, and described cement enlarged footing is located at PHC pile tubes bottom.
Stone flour layer is mixed provided with microlith between the metalling and microdilatancy pea gravel concreten layer, described microlith mixes stone flour layer
Top surface be higher than level of ground water.
Compared with prior art, the utility model has following technique effect：The utility model technique is simple, construction party
Just, low cost, stress tube pile bearing capacity can be effectively improved in advance.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
In order that technical problem to be solved in the utility model, technical scheme and beneficial effect are more clearly understood, with
Lower combination drawings and Examples, the utility model is further elaborated.It should be appreciated that specific reality described herein
Example is applied only to explain the utility model, is not used to limit the utility model.
As shown in figure 1, including pile for prestressed pipe 1, pile for prestressed pipe 1 is embedded in underground, the bottom of pile for prestressed pipe 1 is provided with
Metalling 5 is provided with the soil cement enlarged footing 2 formed after slip casting, soil cement enlarged footing 2, metalling 5 extends to prestressed pipe
In stake, microdilatancy pea gravel concreten layer 3 is from top to bottom disposed with pile for prestressed pipe 1 and microlith mixes stone flour layer 4.
When being constructed, using PHC pile tube post grouting construction techniques, operation is followed the steps below,
A, pile for prestressed pipe is pressed into foundation soil to supporting course；
B, using rig by the official jargon of pile for prestressed pipe in the ttom of pipe soil taking hole forming of pile for prestressed pipe, or directly stir
Into mud, the ttom of pipe of pile for prestressed pipe fetches earth depth for 0.3-3m, and pore-forming technique uses drill hole of drilling machine, mud off；Make pre-
The closely knit soil layer of stress pile tube compacting, in the presence of rig, forms injected hole, is easy to the cement mortar of injection to be spread to surrounding；
C and then placed in pile for prestressed pipe in the middle of Grouting Pipe, Grouting Pipe is connected with articulation；
D, rubble poured into the bottom forming hole of pile for prestressed pipe again, until rubble apical side height is higher than pile for prestressed pipe bottom
Portion 5m, stops perfusion, and the particle diameter of rubble is more than or equal to 40mm；Pore-forming is filled using rubble, underground water dilution envelope is prevented
Stifled pea gravel concreten, and avoid pea gravel concreten from blocking Grouting Pipe；
E, microlith poured into pile for prestressed pipe with stone flour again, until microlith is higher than level of ground water with the top surface of stone flour；Adopt
It is filled with microlith with stone flour, to avoid dilution of the underground water to closure pea gravel concreten, and pea gravel concreten from oozing downwards
Thoroughly；
F and then c30 microdilatancy pea gravel concretens are poured into pile for prestressed pipe again, blocked, influx height is 20m；
Pile for prestressed pipe is blocked using microdilatancy pea gravel concreten, prevents grouting pressure too high, causes to go out in pile for prestressed pipe
Now return slurry；
G, Grouting Pipe cement injection can be passed through after 48 hours；When carrying out slip casting, cement mortar uses 52.5R ordinary portland cements
Stirred with water, ratio of mud 0.4-1.5, by dilute retrogradation；Grouting pressure 1-4MP, changes from small to big；Grouting striaght cement consumption reaches mesh
Scale value reaches that certain value and pressure continue 4MP and can terminate slip casting up to more than 5 minutes.Stake subsoil is cleaved by slip casting
Infiltration, dense extrusion, solidifyingization consolidation, and the soil cement enlarged footing of high intensity is formed, and constitute prestressed pipe with pile for prestressed pipe
Stake composite pile；
Static test, which can be carried out, after being conserved 28 days after the completion of h, slip casting examines its bearing capacity.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., all should be wrapped in the utility model model
In enclosing.
Claims (4)
1.PHC pile tube composite piles, it is characterised in that：Including pile for prestressed pipe, the pile for prestressed pipe is pressed into foundation soil holding force in advance
Layer, the pile for prestressed pipe bottom is provided with the soil cement enlarged footing formed after slip casting, the soil cement enlarged footing and is provided with
Metalling, the metalling is extended in pile for prestressed pipe, and microdilatancy is from top to bottom disposed with the pile for prestressed pipe
Pea gravel concreten layer and microlith mix stone flour layer.
2. PHC pile tubes composite pile according to claim 1, it is characterised in that：Described microdilatancy pea gravel concreten floor height
In level of ground water.
3. PHC pile tubes composite pile according to claim 1, it is characterised in that：Described cement enlarged footing is by cement puddled soil
With rubble composition, described cement enlarged footing is located at PHC pile tubes bottom.
4. PHC pile tubes composite pile according to claim 1, it is characterised in that：The metalling and microdilatancy microlith coagulation
Stone flour layer is mixed provided with microlith between soil layer, described microlith mixes stone flour layer top surface and is higher than level of ground water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621091675.2U CN206591516U (en) | 2016-09-29 | 2016-09-29 | PHC pile tube composite piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621091675.2U CN206591516U (en) | 2016-09-29 | 2016-09-29 | PHC pile tube composite piles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206591516U true CN206591516U (en) | 2017-10-27 |
Family
ID=60131034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621091675.2U Active CN206591516U (en) | 2016-09-29 | 2016-09-29 | PHC pile tube composite piles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206591516U (en) |
-
2016
- 2016-09-29 CN CN201621091675.2U patent/CN206591516U/en active Active
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