CN2659960Y - Hollow club-footed pile through high pressure spirally spraying - Google Patents
Hollow club-footed pile through high pressure spirally spraying Download PDFInfo
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- CN2659960Y CN2659960Y CN 200320125653 CN200320125653U CN2659960Y CN 2659960 Y CN2659960 Y CN 2659960Y CN 200320125653 CN200320125653 CN 200320125653 CN 200320125653 U CN200320125653 U CN 200320125653U CN 2659960 Y CN2659960 Y CN 2659960Y
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Abstract
The utility model relates to a hollow pedestal pile in a high pressure spiral spray and a making method of the pedestal pile. A pile body is arranged vertically along a foundation in relative parallel; the middle part of the pile body is provided with a hollow hole along the pile body in relative parallel; the hollow hole perforates the pile body; a base of the pedestal pile is arranged on the lower end of the pile body in the foundation; a section of the pile body is round, rectangular or polygonal. The utility model has the advantages of the rational design, the compact structure, the simple and convenient construction, the easy learning, the material saving, the labor saving, the time saving, the energy saving and the investment saving. A bearing capacity of a pile end is improved greatly; the bearing capacity of a single pile and a price ratio are higher than a prior type of the pile. The utility model can be applied to a pile foundation of a building foundation, a structure, an equipment foundation and a soft soil foundation in a construction work, a bridge construction, a municipal engineering and a hydraulic engineering and so on extensively. The utility model is applied to some actual engineerings, and accords with the trade standards of the People's Republic of China after examnination, that are, JGJ94-94 the technical specification of the building pile foundation and JGJ 79-91 the technical specification of the building lot treatment.
Description
Technical field
The utility model relates to the stake of various bases carrying in the engineerings such as a kind of construction work, bridge engineering, municipal engineering, hydraulic engineering, relates in particular to a kind of high-pressure rotary-spray hollow expanded bore pile and preparation method.
Background technology
At present, be used in the structure types of the various basic pile foundations of engineering such as construction work, bridge engineering, municipal engineering, hydraulic engineering stake of single structure type and the stake of combining structure type being arranged.The single structure stake has tube-sinking cast-in-situ pile, bored pile, precast square pile, pile tube, agitation pile, CFG stake etc.; The stake of combining structure type has compaction pile, Concrete Core Mixing Pile, 3M stake etc.
The above-mentioned stake type part that comes with some shortcomings respectively or jointly.For example, the ratio of performance to price of single structure type stake is low, and especially the defective of the tube-sinking cast-in-situ pile in the stake of single structure type, bored pile, precast square pile, pile tube, agitation pile, CFG stake existence is mud contamination and noise problem.The vibration that compaction pile in the stake of combining structure type produces in manufacturing process particularly disturbs residents, and in addition, it rams the degree of depth that expands not only limitation, and it can only improve the end load.Concrete Core Mixing Pile because of stirred, the influence of factors such as pressure and equipment limitation, it stirs degree of depth, a stake footpath size all has limitation, the top weak soil is stirred the back improve lessly, and can only improve the part side friction, so bearing capacity is higher than not with price.Development along with construction market, load is also improving the requirement of pile foundation, especially current international and domestic building, all developing to high level, road and bridge are developing to large-scale, heavy, if the load of pile foundation needs to strengthen, generally be the load that the quantity taking to add the cross section and the length of timber pile or increase stake improves pile foundation.The quantity that adds timber pile cross section and increase stake all can improve the cost of pile foundation, and the cost that has strengthened pile foundation then improves the cost of construction work.Thereby take a lot of work, take material, expend fund, expend problem such as the energy existing in varying degrees, bring in various degree difficulty for design and construction.
The utility model content
Main purpose of the present utility model is to solve the problem in the above-mentioned pile foundation, and a kind of pile foundation length is short, bearing capacity is high, cost is low high-pressure rotary-spray hollow expanded bore pile and preparation method are provided.
The technical scheme that its technical problem that solves the utility model adopts is:
Along the ground opposing parallel pile body is set vertically in ground, the middle part of pile body is provided with hollow hole along the pile body opposing parallel, and hollow hole connects pile body.The bottom of pile body is provided with the expanded bore pile pin in the ground.
Determine the length of pile body according to designing requirement, adopt pile driver or pile press that the pile body opposing parallel is vertically set in the ground.Middle part at pile body is provided with hollow hole, sets the aperture of hollow hole and the wall thickness of pile body according to designing requirement.In the bottom of pile body the expanded bore pile pin is set, improves the bearing capacity of pile body.
The diameter of expanded bore pile pin is greater than the diameter in pile body cross section, and the height of expanded bore pile pin is greater than the diameter of expanded bore pile pin.One end of expanded bore pile pin embeds in the hollow hole of pile body, makes expanded bore pile pin and pile body constitute one.
In the bottom of pile body the expanded bore pile pin is set, the diameter of setting the expanded bore pile pin should be greater than the diameter of pile body, and the diameter of general expanded bore pile pin is 2～5 times of pile body diameter of section; The height of setting the expanded bore pile pin should can improve the load power of 3～5 times of pile bodies and the frictional force of pile body bottom greater than the diameter of expanded bore pile pin.
The bottom of pile body embeds in the expanded bore pile pin, and the expanded bore pile pin wraps the bottom of pile body, and the bottom of pile body and expanded bore pile pin constitute one.
Determine the length of pile body according to designing requirement, after the pile body bottom makes the expanded bore pile pin, adopt pile driver or pile press to continue the bottom opposing parallel of pile body is vertically placed in the expanded bore pile pin.The bottom of pile body is embedded in the expanded bore pile pin, allow the expanded bore pile pin wrap the bottom of pile body, make the bottom of pile body and expanded bore pile pin constitute one.
Pile body adopts precast hollow stake or cast-in-place hollow stake, and the cross section of pile body is circle or rectangle or polygon.
According to the different geological conditions of ground and the designing requirement of ground, adopt prefabricated hollow pile directly to place in the ground; Perhaps in ground, directly carry out the cast-in-place hollow stake.Select for use different pile body cross sectional shapes to improve the frictional force of pile body.
With vibration hammer or static pressure method the pile body opposing parallel is vertically placed in the ground, the drilling rod of stake machine is inserted along the hollow hole of pile body in the hollow hole of pile body, the spray orifice of drill rod end is by hollow hole and pass the bottom of pile body.
By pile driver or pile press pile body is set in ground, pile body in vertical state.The drilling rod of stake machine inserts in the hollow hole of pile body, makes the spray orifice of drill rod end pass the bottom of pile body, and drilling rod is carried the drilling rod limit and sprayed filler while rotate.
The stake machine orders about drilling rod and carries spray filler in drilling rod limit while rotating, spray orifice by drill rod end around the pile body bottom the filler churning in the foundation soil on every side of the bottom of pile body, the mixed expanded bore pile pin that makes of foundation soil around filler and the pile body bottom, the diameter of the expanded bore pile pin of making is greater than the diameter of pile body.
Spray orifice by drill rod end carries out the churning operation around the end of pile body, be made into the expanded bore pile pin, and the filler of making the expanded bore pile pin can adopt powdered cement powder, aqueous cement paste or other materials.
After making pile body bottom expanded bore pile pin, the stake machine sprays the filler limit while rotating mentions drilling rod, in the hollow hole of pile body bottom, continue the churning filler, filler is mixed with foundation soil in the hollow hole of pile body bottom, allow the upper end of expanded bore pile pin embed in the hollow hole of pile body, make pile body and expanded bore pile pin form one.The stake machine proposes drilling rod in the hollow hole of pile body.
After having made pile body bottom expanded bore pile pin, the stake machine continues the churning filler when carrying drilling rod in the hollow hole of pile body bottom, make the more firm formation one of pile body and expanded bore pile pin, and the while is also improved pile body and expanded bore pile pin steadiness.The stake machine proposes drilling rod in the hollow hole of pile body, finish the operation of stake.
The stake machine adopts high-pressure rotary jet grouting pile machine or high pressure mixer.Filler adopts powdered cement powder or aqueous cement paste.
Adopt the high-pressure rotary jet grouting pile machine in ground, to carry out the churning operation and make the expanded bore pile pin; Perhaps adopt the high pressure mixer in ground, to make the expanded bore pile pin.Adopt the powdered cement powder to make the expanded bore pile pin as filler; Perhaps adopt aqueous cement paste to make the expanded bore pile pin.
After the pile body bottom makes the expanded bore pile pin, with vibration hammer or static pressure method pile body being continued opposing parallel vertically places in the ground, the bottom of pile body is embedded in the expanded bore pile pin, allow the expanded bore pile pin wrap the bottom of pile body, make the bottom of pile body and expanded bore pile pin constitute one.
According to the different geological conditions of ground and the designing requirement of ground, after the pile body bottom makes the expanded bore pile pin in ground, adopt pile driver or pile press to continue pile body is placed in the ground, the bottom of pile body is embedded in the expanded bore pile pin, allow the expanded bore pile pin wrap the bottom of pile body, make the bottom of its pile body and expanded bore pile pin constitute one.Also but multistage repeats operation, until reaching designing requirement.
The utility model is high-pressure rotary-spray hollow expanded bore pile and preparation method.Reasonable in design, compact conformation, easy construction is easily grasped, material-saving, saving of labor, save time, energy-conservation, save investment.Significantly improved bearing capacity of pile tip and side friction, bearing capacity of single pile is higher than existing stake type with the price ratio; Can realize that the piling of static pressure mode reaches noiselessness, friction, no mud emission; The bearing capacity of stake is reliable, and discreteness is little; It is faster to construct; Be applied to timber pile footpath, the high-bearing capacity stake can further reduce cost.The utility model applied range can be widely used in the pile foundation of building foundation, structure, Equipment Foundations and the soft foundation of construction work, bridge engineering, municipal engineering, hydraulic engineering etc.The utility model is applied to meet after testing in the actual engineering People's Republic of China's industry standard " technical code for building pile foundation " JGJ94-94 and " building lot treatment technology standard " JGJ79-91.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in detail.
The schematic diagram of Fig. 1 high-pressure rotary-spray hollow expanded bore pile and preparation method
The schematic diagram of Fig. 2 high-pressure rotary-spray hollow expanded bore pile and preparation method
The schematic diagram of Fig. 3 high-pressure rotary-spray hollow expanded bore pile and preparation method
The schematic diagram in Fig. 4 high-pressure rotary-spray hollow expanded bore pile cross section
1 pile body, 2 hollow holes, 3 grounds, 4 expanded bore pile pin, 5 drilling rods, 6 spray oar holes, 7 machines
The specific embodiment
Along ground (3) opposing parallel pile body (1) is set vertically in ground (3), the middle part of pile body (1) is provided with hollow hole (2) along pile body (1) opposing parallel, and hollow hole (2) connects pile body (1).The bottom of the interior pile body of ground (3) (1) is provided with expanded bore pile pin (4).
Determine the length of pile body (1) according to designing requirement, adopt pile driver pile body (1) opposing parallel vertically to be placed in the ground (3) with the method for vibration hammer.At the middle part of pile body (1) hollow hole (2) is set, sets the aperture of hollow hole (2) and the wall thickness of pile body (1) according to designing requirement.In the bottom of pile body (1) expanded bore pile pin (4) is set, improves the bearing capacity of pile body (1), as Fig. 1, Fig. 2, shown in Figure 3.
Along ground (3) opposing parallel pile body (1) is set vertically in ground (3), the middle part of pile body (1) is provided with hollow hole (2) along pile body (1) opposing parallel, and hollow hole (2) connects pile body (1).The bottom of the interior pile body of ground (3) (1) is provided with expanded bore pile pin (4).
Determine the length of pile body (1) according to designing requirement, adopt pile press pile body (1) opposing parallel vertically to be placed in the ground (3) with the method for static pressure.At the middle part of pile body (1) hollow hole (2) is set, sets the aperture of hollow hole (2) and the wall thickness of pile body (1) according to designing requirement.In the bottom of pile body (1) expanded bore pile pin (4) is set, improves the bearing capacity of pile body (1), as Fig. 1, Fig. 2, shown in Figure 3.
The diameter of expanded bore pile pin (4) is greater than the diameter in pile body (1) cross section, and the height of expanded bore pile pin (4) is greater than the diameter of expanded bore pile pin (4).One end of expanded bore pile pin (4) embeds in the hollow hole (2) of pile body (1), makes expanded bore pile pin (4) and pile body (1) constitute one.
In the bottom of pile body (1) expanded bore pile pin (4) is set, the diameter of setting expanded bore pile pin (4) should be greater than the diameter of pile body (1), the height of setting the expanded bore pile pin should be greater than the diameter of expanded bore pile pin (4), improve the load power of pile body (1) and the frictional force of pile body (1) bottom, as Fig. 1, Fig. 2, shown in Figure 3.
Embodiment 4
The bottom of pile body (1) embeds in the expanded bore pile pin (4), and expanded bore pile pin (4) wraps the bottom of pile body (1), and the bottom of pile body (1) and expanded bore pile pin (4) constitute one.
Determine the length of pile body (1) according to designing requirement, after pile body (1) bottom makes expanded bore pile pin (4), adopt pile driver to continue pile body (1) opposing parallel vertically to be placed in the ground (3) with the method for vibration hammer, the bottom of pile body (1) is embedded in the expanded bore pile pin (4), allow expanded bore pile pin (4) wrap the bottom of pile body (1), make the bottom and the expanded bore pile pin (4) of pile body (1) constitute one, as shown in Figure 3.
Embodiment 5
The bottom of pile body (1) embeds in the expanded bore pile pin (4), and expanded bore pile pin (4) wraps the bottom of pile body (1), and the bottom of pile body (1) and expanded bore pile pin (4) constitute one.
Determine the length of pile body (1) according to designing requirement, after pile body (1) bottom makes expanded bore pile pin (4), adopt pile press to continue pile body (1) opposing parallel vertically to be placed in the ground (3) with the method for static pressure, the bottom of pile body (1) is embedded in the expanded bore pile pin (4), allow expanded bore pile pin (4) wrap the bottom of pile body (1), make the bottom and the expanded bore pile pin (4) of pile body (1) constitute one, as shown in Figure 3.
Embodiment 6
Pile body (1) adopts the precast hollow stake, and the cross section of pile body (1) is circular.
According to the geological condition of ground (3) and the designing requirement of ground, adopt prefabricated hollow pile directly to place in the ground.Select different pile body (1) cross sectional shape for use, improve the frictional force of pile body (1), as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4.
Embodiment 7
Pile body (1) adopts the cast-in-place hollow stake, and the cross section of pile body (1) is a rectangle.
According to the geological condition of ground (3) and the designing requirement of ground, in ground, directly carry out the cast-in-place hollow stake.Select different pile body (1) cross sectional shape for use, improve the frictional force of pile body (1), as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4.
Embodiment 8
Pile body (1) adopts the precast hollow stake, and the cross section of pile body (1) is a polygon.
According to the geological condition of ground (3) and the designing requirement of ground, adopt prefabricated hollow pile directly to place in the ground.Select different pile body (1) cross sectional shape for use, improve the frictional force of pile body (1), as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4.
Embodiment 9
With the vibration hammer method pile body (1) opposing parallel is vertically placed in the ground (3), the drilling rod (5) of stake machine (7) is inserted along the hollow hole (2) of pile body (1) in the hollow hole (2) of pile body (1), and the spray orifice (6) of drilling rod (5) end is by hollow hole (2) and pass the bottom of pile body (1).
Be built in pile body (1) by pile driver at ground (3), pile body (1) in vertical state.The drilling rod (5) of stake machine (7) inserts in the hollow hole (2) of pile body (1), makes the spray orifice (6) of drilling rod (5) end pass the bottom of pile body (1), and drilling rod (5) is carried while rotate and bored the limit and spray filler.Stake machine (7) adopts high-pressure rotary jetting apparatus.
Stake machine (7) orders about drilling rod (5) and carries spray filler in drilling rod (5) limit while rotating, spray orifice (6) by drilling rod (5) end around the bottom of pile body (1) the filler churning in the foundation soil on every side of the bottom of pile body (1), the mixed expanded bore pile pin (4) that makes of foundation soil around filler and pile body (1) bottom, the diameter of the expanded bore pile pin (4) of making is greater than the diameter of pile body (1).
Spray orifice (6) by drilling rod (5) end carries out the churning operation around the end of pile body (1), be made into expanded bore pile pin (4), and the filler of making expanded bore pile pin (4) adopts aqueous cement paste.
After making pile body (1) bottom expanded bore pile pin (4), stake machine (7) sprays the filler limit while rotating mentions drilling rod (5), in pile body (1) bottom hollow hole (2), continue the churning filler, the foundation soil interior filler and pile body (1) bottom hollow hole (2) mixes, allow the upper end of expanded bore pile pin (4) embed in the hollow hole (2) of pile body (1), make pile body (1) and expanded bore pile pin (4) form one.Stake machine (7) proposes drilling rod (5) in the hollow hole (2) of pile body (1).
After having made pile body (1) bottom expanded bore pile pin (4), stake machine (7) is when carrying drilling rod (5), in pile body (1) bottom hollow hole (2), continue the churning filler, make pile body (1) and the more firm formation one of expanded bore pile pin (4), also improve pile body (1) and expanded bore pile pin (4) steadiness simultaneously.Stake machine (7) proposes drilling rod (5) in the hollow hole (2) of pile body (1), finish the operation of stake, as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4.
Embodiment 10
With static pressure method pile body (1) opposing parallel is vertically placed in the ground (3), the drilling rod (5) of stake machine (7) is inserted along the hollow hole (2) of pile body (1) in the hollow hole (2) of pile body (1), and the spray orifice (6) of drilling rod (5) end is by hollow hole (2) and pass the bottom of pile body (1).
By pile press pile body (1) is set in ground (3), pile body (1) in vertical state.The drilling rod (5) of stake machine (7) inserts in the hollow hole (2) of pile body (1), makes the spray orifice (6) of drilling rod (5) end pass the bottom of pile body (1), and drilling rod (5) is carried while rotate and bored the limit and spray filler.Stake machine (7) adopts the high pressure mixer.
Stake machine (7) orders about drilling rod (5) and carries spray filler in drilling rod (5) limit while rotating, spray orifice (6) by drilling rod (5) end around the end of pile body (1) the filler churning in the foundation soil on every side of the bottom of pile body (1), the mixed expanded bore pile pin (4) that makes of foundation soil around filler and pile body (1) bottom, the diameter of the expanded bore pile pin (4) of making is greater than the diameter of pile body (1).
Spray orifice (6) by drilling rod (5) end carries out the churning operation around the end of pile body (1), be made into expanded bore pile pin (4), and the filler of making expanded bore pile pin (4) adopts the powdered cement powder.
After making pile body (1) bottom expanded bore pile pin (4), stake machine (7) sprays the filler limit while rotating mentions drilling rod (5), in pile body (1) bottom hollow hole (2), continue the churning filler, the foundation soil interior filler and pile body (1) bottom hollow hole (2) mixes, allow the upper end of expanded bore pile pin (4) embed in the hollow hole (2) of pile body (1), make pile body (1) and expanded bore pile pin (4) form one.Stake machine (7) proposes drilling rod (5) in the hollow hole (2) of pile body (1).
After having made pile body (1) bottom expanded bore pile pin (4), stake machine (7) is when carrying drilling rod (5), in pile body (1) bottom hollow hole (2), continue the churning filler, make pile body (1) and the more firm formation one of expanded bore pile pin (4), also improve pile body (1) and expanded bore pile pin (4) steadiness simultaneously.Stake machine (7) proposes drilling rod (5) in the hollow hole (2) of pile body (2), finish the operation of stake, as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4.
Embodiment 11
After pile body (1) bottom makes expanded bore pile pin (4), with the vibration hammer method pile body (1) being continued opposing parallel vertically places in the ground (3), the bottom of pile body (1) is embedded in the expanded bore pile pin (4), allow expanded bore pile pin (4) wrap the bottom of pile body (1), make the bottom of pile body (1) and expanded bore pile pin (4) constitute one.
According to the different geological conditions of ground (3) and the designing requirement of ground, after pile body (1) bottom makes expanded bore pile pin (4) in ground (3), adopt pile driver to continue pile body (1) is placed in the ground (3), the bottom of pile body (1) is embedded in the expanded bore pile pin (4), allow expanded bore pile pin (4) wrap the bottom of pile body (1), make the bottom and the expanded bore pile pin (4) of its pile body (1) constitute one, as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4.
Embodiment 12
After pile body (1) bottom makes expanded bore pile pin (4), with static pressure method pile body (1) being continued opposing parallel vertically places in the ground (3), the bottom of pile body (1) is embedded in the expanded bore pile pin (4), allow expanded bore pile pin (4) wrap the bottom of pile body (1), make the bottom of pile body (1) and expanded bore pile pin (4) constitute one.
According to the different geological conditions of ground (3) and the designing requirement of ground, after pile body (1) bottom makes expanded bore pile pin (4) in ground (3), adopt pile press to continue pile body (1) is placed in the ground (3), the bottom of pile body (1) is embedded in the expanded bore pile pin (4), allow expanded bore pile pin (4) wrap the bottom of pile body (1), make the bottom and the expanded bore pile pin (4) of its pile body (1) constitute one, as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4.
Claims (4)
1, a kind of high-pressure rotary-spray hollow expanded bore pile is characterized in that along ground (3) opposing parallel pile body (1) being set vertically in ground (3), and the middle part of pile body (1) is provided with hollow hole (2) along pile body (1) opposing parallel, and hollow hole (2) connects pile body (1); The bottom of the interior pile body of ground (3) (1) is provided with expanded bore pile pin (4).
2, high-pressure rotary-spray hollow expanded bore pile according to claim 1 is characterized in that the diameter of the diameter of described expanded bore pile pin (4) greater than pile body (1) cross section, and the height of expanded bore pile pin (4) is greater than the diameter of expanded bore pile pin (4); One end of expanded bore pile pin (4) embeds in the hollow hole (2) of pile body (1), makes expanded bore pile pin (4) and pile body (1) constitute one.
3, high-pressure rotary-spray hollow expanded bore pile according to claim 1 and 2, the bottom that it is characterized in that described pile body (1) embeds in the expanded bore pile pin (4), expanded bore pile pin (4) wraps the bottom of pile body (1), and the bottom of pile body (1) and expanded bore pile pin (4) constitute one.
4, high-pressure rotary-spray hollow expanded bore pile according to claim 1 is characterized in that described pile body (1) adopts precast hollow stake or cast-in-place hollow stake, and the cross section of pile body (1) is circle or rectangle or polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320125653 CN2659960Y (en) | 2003-12-08 | 2003-12-08 | Hollow club-footed pile through high pressure spirally spraying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320125653 CN2659960Y (en) | 2003-12-08 | 2003-12-08 | Hollow club-footed pile through high pressure spirally spraying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2659960Y true CN2659960Y (en) | 2004-12-01 |
Family
ID=34349270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320125653 Expired - Lifetime CN2659960Y (en) | 2003-12-08 | 2003-12-08 | Hollow club-footed pile through high pressure spirally spraying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2659960Y (en) |
-
2003
- 2003-12-08 CN CN 200320125653 patent/CN2659960Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20060419 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |