CN205399412U - A static pressure immersed tube perfusion device for variable cross section stake - Google Patents
A static pressure immersed tube perfusion device for variable cross section stake Download PDFInfo
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- CN205399412U CN205399412U CN201620162147.5U CN201620162147U CN205399412U CN 205399412 U CN205399412 U CN 205399412U CN 201620162147 U CN201620162147 U CN 201620162147U CN 205399412 U CN205399412 U CN 205399412U
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- sleeve pipe
- static pressure
- immersed tube
- casting
- tube device
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Abstract
The utility model discloses a static pressure immersed tube perfusion device for variable cross section stake, including the at least two sections sleeve pipes that the diameter is different, sleeve pipe successive layer suit, it is less than the sleeve pipe length that is located the inlayer to be located outer sheathed tube length, all connect through the connecting piece of the dismouting of being convenient for between the adjacent sleeve pipe, the connecting piece sets up in the sheathed tube lower part that is located outer sheathed tube upper portion with be located the inlayer. Through the installed and disassembled of connecting piece, can control the intervascular connection status of cover, realize that the sleeve pipe merogenesis is impressed and the merogenesis is extracted. Through controlling the area of contact between the every section sleeve pipe and the soil body, reduce the frictional resistance of the soil body to the device. This device structure sets up simply reasonable, and convenient to use can easily realize impressing and extract the deep soil body, and it is good to become the stake wholeness.
Description
Technical field
This utility model relates to the composite foundation reinforcement of soft soil field in Geotechnical Engineering, more particularly, to a kind of static pressure, immersed tube device for casting for non-uniform pile.
Background technology
Soft soil foundation has the features such as void ratio is big, natural moisture content is high, compressibility is strong, bearing capacity is low, is unfavorable for engineering construction.Non-uniform pile makes full use of the rule that soil layer bearing capacity strengthens with degree of depth increase, it is possible to while improving soft soil foundation bearing capacity, reduce cost.
Different according to material of body of a pile, non-uniform pile can be divided into concrete variable cross-section stake and soil cement non-uniform pile.At present, what the construction technology of concrete variable cross-section stake adopted is merogenesis static pressure, the adjacent form connected.Soil cement non-uniform pile mainly adopts static pressure pore-forming, the construction technology of earth filling tamping.The maximum of this construction technology existence has a problem in that stake is long, and pile-soil interface is long-pending big, causes pile side resistance excessive, and needed for static pressure, counter-force is relatively big, and after press-in pore-forming, device is not drawn out easily.This pile form causes that the quality of stake depends on the quality of connector between two adjacent sections, and pile body molding globality is bad.
Utility model content
For overcoming above prior art Problems existing, this utility model provides a kind of structure reliable, and needed for static pressure, counter-force is little, and the static pressure, immersed tube device for casting for non-uniform pile being drawn out easily after press-in.
This utility model is achieved by the following technical programs:
Thering is provided a kind of static pressure, immersed tube device for casting for non-uniform pile, save, including at least two, the sleeve pipe that diameter is different, described sleeve pipe is successively set with；It is positioned at the length of sleeve pipe of outer layer less than the casing length being positioned at internal layer；Connecting each through easy-to-mount connector between adjacent sleeve pipe, described connector is arranged at the top of the sleeve pipe being positioned at outer layer and the bottom of the sleeve pipe being positioned at internal layer.
In this utility model, being connected by connector between adjacent sleeve pipe, sleeve pipe is successively set with, and connects layer by layer so that remove the connector of a layer, makes at most a sleeve pipe separate, and still connects into an entirety between other sleeve pipe.
By controlling the relative length of inside and outside layer sleeve pipe so that remove after connector, carry out the press-in of sleeve pipe merogenesis more convenient, simultaneously merogenesis extract also more convenient.
By decision design connector sleeve pipe link position with control non-uniform pile entire length while, increase the driving depth of the static pressure, immersed tube device for casting for non-uniform pile；And so that in static pressure process, connector is convenient to be removed.
The relative displacement between limiting boot is carried out, by the installation of connector and dismounting, it is possible to control the connection status between sleeve pipe, it is achieved the sleeve pipe merogenesis press-in for the static pressure, immersed tube device for casting of non-uniform pile is extracted with merogenesis by connector.When carrying out static pressure, static pressure, immersed tube device for casting desirable pressure becomes positive correlation with the frictional resistance between its with the soil body；In order to reduce the pressure needed for static pressure, it is arranged in after outermost sleeve pipe is pressed into the soil body, removes the connector being positioned on outermost layer sleeve pipe, make to be positioned at outermost sleeve pipe and separate with coupled inner layer sleeve；Owing to inner layer sleeve is partially in outer layer sleeve, utilize the isolation of outer layer sleeve, reduce the contact area of inner layer sleeve and outer layer soil body during press-in, thus reducing the stake soil frictional resistance to device so that during press-in, the static pressure, immersed tube device for casting desirable pressure for non-uniform pile is greatly reduced.So depart from layer by layer, the contact area that ingenious minimizing device is native with stake；Can easily squeeze into deeper soil layer and can easily extract；After pore-forming, merogenesis is filled out rammer soil cement or builds concrete, good integrity.
Preferably, the bottom of each sleeve pipe is concordant, to control the entire length of non-uniform pile.
Preferably, the bottom of described sleeve pipe is the point end, to reduce soil body resistance suffered when sleeve pipe is pressed into.
In such scheme, the circumferential quantity at least two of the casing wall of described connector junction between sleeve pipe.
In such scheme, described connector junction between sleeve pipe is uniformly arranged along the circumference of casing wall.
Circumferentially distributed quantity and circumferentially distributed position by restricting connector make sleeve pipe generation failure by shear to prevent stress from concentrating.By installing or removing connector, it is possible to control the connection between adjacent casing or separation, it is achieved the merogenesis press-in of sleeve pipe is extracted with merogenesis；Its simple in construction, highly reliable.
In such scheme, described connector is pin or buckle.
Preferably, described connector is pin, and pin runs through the inside and outside layer sleeve pipe of junction so that junction is more firm.
In such scheme, described in be positioned at the sleeve pipe of innermost layer be hollow bushing or solid tubes.
Preferably, the bottom of the hollow bushing being positioned at innermost layer described in is provided with pipe close；The upper end of described pipe close is connected with the bottom of the hollow bushing being positioned at innermost layer, and the lower end of pipe close is flush end or tip.
In this utility model, the setting of pipe close is possible to prevent the stake soil when being pressed into sleeve pipe to be squeezed into the sleeve pipe being arranged in innermost layer；Pipe close lower end is set to tip, advantageously reduces counter-force needed for static pressure.
Compared with the existing technology, the beneficial effects of the utility model are:
This utility model is ingenious make use of variable cross-section forming pile pinciple, devises multilayer sleeve, carries out merogenesis static pressure；The connection between sleeve pipe or separation is controlled by controlling the installation or removal of connector；By reduce static pressure time sleeve pipe and the soil body between contact area, to reduce the soil body frictional resistance to device；By the relative length of design ectonexine sleeve pipe to realize the press-in of the static pressure, immersed tube device for casting for non-uniform pile and the facility extracted；By designing the connector link position at sleeve pipe to increase the driving depth of the static pressure, immersed tube device for casting for non-uniform pile, the quantity of design connector and distributing position, to avoid shearing force to concentrate, make device more firm.This apparatus structure advantages of simple, easy to use, it is possible to easily to realize press-in and extract deep soil, pile good integrity, reliable in quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment 1；
Fig. 2 is the structural representation that this utility model embodiment 1 is positioned at the sleeve pipe of innermost layer；
Fig. 3 is the combinative structure schematic diagram of this utility model embodiment 1；
Fig. 4 is the enforcement principle schematic of this utility model embodiment 1；
Fig. 5 is the structural representation that this utility model embodiment 2 is positioned at the sleeve pipe of innermost layer；
Fig. 6 is the structural representation of this utility model embodiment 3；
Fig. 7 is the structural representation that this utility model embodiment 3 is positioned at the sleeve pipe of innermost layer.
Detailed description of the invention
This utility model embodiment accompanying drawing being merely cited for property explanation, it is impossible to be interpreted as restriction of the present utility model.In order to the present embodiment is better described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product；To those skilled in the art, in accompanying drawing, some known features and explanation thereof are likely to omission and will be understood by.Below in conjunction with drawings and Examples, the technical solution of the utility model is described further.
Embodiment 1
As shown in Figure 1 to Figure 3, embodiment 1 provides a kind of static pressure, immersed tube device for casting for non-uniform pile, and including the sleeve pipe that three joint diameters are different, sleeve pipe is successively set with, from being divided into first sleeve the 1, second sleeve pipe 2 and the 3rd sleeve pipe 3 outside to inside；Connected by easy-to-mount connector between adjacent sleeve pipe so that remove the connector at a place, a sleeve pipe can be made at most to separate, and other sleeve pipe still connects into an entirety.
In the present embodiment, the first connector 4 connects first sleeve 1 and the second sleeve pipe 2, and in order to reach better fixed effect, the first connector 4 can also connect first sleeve the 1, second sleeve pipe 2 and the 3rd sleeve pipe 3；Second connector 5 connects the second sleeve pipe 2 and the 3rd sleeve pipe 3.
Connector is pin, the pin at least two of junction between sleeve pipe.As it is shown on figure 3, the first connector 4 and the second connector include 2 pairs of pins respectively；Pin junction between sleeve pipe is uniformly arranged along the circumference of casing wall.
The top of sleeve pipe being positioned at outer layer is connected by connector with the bottom of the sleeve pipe being positioned at internal layer.First connector 4 is positioned at the top of first sleeve 1, and the second connector 5 is positioned at the top of the second sleeve pipe 2.
It is positioned at the length of sleeve pipe of outer layer less than the casing length being positioned at internal layer.The length of first sleeve 1 is less than the length with the second sleeve pipe 2, and the length of the second sleeve pipe 2 is less than the length of the 3rd sleeve pipe 3；Three joint casing shoes are concordant.
3rd sleeve pipe 3 is hollow bushing, is provided with pipe close 6 bottom hollow bushing.The upper end of pipe close 6 is connected with the bottom of the 3rd sleeve pipe 3, and the lower end of pipe close 6 is flush end.
As shown in Figure 4, the present embodiment is used to carry out construction process as follows:
S1: reserve stake position, fix pin so that three joint sleeve pipes are integrally formed.Squeeze into the static pressure, immersed tube device for casting for non-uniform pile downward vertically from the scope of operation, static pressure three saves sleeve pipe simultaneously.Size is exposed, it is judged that the static pressure degree of depth according to first sleeve 1 and length；First sleeve 1 stops operation after reaching the set degree of depth；
Now, for the static pressure, immersed tube device for casting of non-uniform pile axially and the frictional force of soil from L1 section；
S2: after first sleeve 1 arrives the set degree of depth, removes the first connector 4 so that the second sleeve pipe 2 and the 3rd sleeve pipe 3 are integrally formed, and separate with first sleeve 1；Continue to squeeze into downwards the second sleeve pipe 2 and the 3rd sleeve pipe 3, expose size according to the second sleeve pipe 2 length, it is judged that driving depth；After arriving the set degree of depth, stop operation；
Owing to separating with the 3rd sleeve pipe 3, for non-uniform pile static pressure, immersed tube device for casting axially with the frictional force of soil, be only from the second sleeve pipe 2 and stretch out the part L2 section of the 3rd sleeve pipe 3, it is possible to exempt that first sleeve 1 is axial and the frictional force of soil；
After S3: the second sleeve pipe 2 arrives the set degree of depth, remove the second connector 5 so that the second sleeve pipe 2 separates with the 3rd sleeve pipe 3；Continue to press downward to the 3rd sleeve pipe 3, according to the 3rd sleeve pipe 3 length and expose size, it is judged that driving depth；After arriving the set degree of depth, stop operation；
In this process, axial and soil the frictional force for the static pressure, immersed tube device for casting of non-uniform pile is only from L3 section；
After so realizing the merogenesis press-in of the static pressure, immersed tube device for casting for non-uniform pile, then carry out merogenesis and extract；
S4: withstand first sleeve 1 and the second sleeve pipe 2, extracts the 3rd sleeve pipe 3, forms bottom and becomes stake holes；Inside casting concrete or inwardly insert material of body of a pile and tamp, forms bottom pile body 7；
S5: withstand first sleeve 1, extracts the second sleeve pipe 2, becomes stake holes in the middle of being formed；Inside casting concrete or inwardly insert material of body of a pile and tamp, forms middle part pile body 8；
S6: extract first sleeve 1, forms top and becomes stake holes；Inside casting concrete or inwardly insert material of body of a pile and tamp, forms top pile body 9；
So complete the non-uniform pile being made up of bottom pile body 7, middle part pile body 8 and top pile body 9.The present embodiment is simple and reasonable, easy to use, it is possible to easily realizes press-in and extracts deep soil, pile good integrity, reliable in quality.
Embodiment 2
As it is shown in figure 5, the structure of embodiment 2 and embodiment is different in that, the lower end of pipe close 6 is most advanced and sophisticated.
Embodiment 3
As shown in Figure 6 to 7, the structure of embodiment 3 and embodiment 1 and embodiment 2 is different in that, static pressure, immersed tube device for casting for non-uniform pile is divided into first sleeve 1 and the second sleeve pipe 2 totally two joint sleeve pipe certainly outside to inside, by snapping connection (not marking in figure) between two joint sleeve pipes；It is buckled in junction between sleeve pipe to arrange symmetrically along the circumference of casing wall；Second sleeve pipe 2 is solid tubes；The bottom of the second sleeve pipe 2 is the point end.
Obviously, above-described embodiment is only for clearly demonstrating the technical solution of the utility model example, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.All any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within this utility model scope of the claims.
Claims (10)
1. the static pressure, immersed tube device for casting for non-uniform pile, it is characterised in that including the sleeve pipe that at least two joint diameters are different, described sleeve pipe is successively set with；It is positioned at the length of sleeve pipe of outer layer less than the length of the sleeve pipe being positioned at internal layer；Connecting each through easy-to-mount connector between adjacent sleeve pipe, described connector is arranged at the top of the sleeve pipe being positioned at outer layer and the bottom of the sleeve pipe being positioned at internal layer.
2. according to claim 1 for the static pressure, immersed tube device for casting of non-uniform pile, it is characterised in that the bottom of each sleeve pipe is concordant.
3. according to claim 1 for the static pressure, immersed tube device for casting of non-uniform pile, it is characterised in that the bottom of described sleeve pipe is the point end.
4. according to claim 1 for the static pressure, immersed tube device for casting of non-uniform pile, it is characterised in that the circumferential quantity at least two of the casing wall of connector junction between sleeve pipe.
5. according to claim 4 for the static pressure, immersed tube device for casting of non-uniform pile, it is characterised in that described connector junction between sleeve pipe is uniformly arranged along the circumference of casing wall.
6. according to claim 5 for the static pressure, immersed tube device for casting of non-uniform pile, it is characterised in that described connector is pin or buckle.
7. according to the static pressure, immersed tube device for casting being used for non-uniform pile described in claim 6, it is characterised in that described connector is pin, and pin runs through the inside and outside layer sleeve pipe of junction.
8. for the static pressure, immersed tube device for casting of non-uniform pile according to claim 1～7 any one, it is characterised in that the sleeve pipe being positioned at innermost layer is hollow bushing or solid tubes.
9. according to claim 8 for the static pressure, immersed tube device for casting of non-uniform pile, it is characterised in that the bottom of the hollow bushing being positioned at innermost layer is provided with pipe close.
10. according to claim 9 for the static pressure, immersed tube device for casting of non-uniform pile, it is characterised in that the upper end of described pipe close is connected with the bottom of the hollow bushing being positioned at innermost layer, and the lower end of pipe close is flush end or tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620162147.5U CN205399412U (en) | 2016-03-03 | 2016-03-03 | A static pressure immersed tube perfusion device for variable cross section stake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620162147.5U CN205399412U (en) | 2016-03-03 | 2016-03-03 | A static pressure immersed tube perfusion device for variable cross section stake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205399412U true CN205399412U (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620162147.5U Expired - Fee Related CN205399412U (en) | 2016-03-03 | 2016-03-03 | A static pressure immersed tube perfusion device for variable cross section stake |
Country Status (1)
| Country | Link |
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| CN (1) | CN205399412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144515A (en) * | 2020-09-30 | 2020-12-29 | 河北昊锐基础工程有限公司 | Anti-collapse hole construction method for rotary digging pile |
-
2016
- 2016-03-03 CN CN201620162147.5U patent/CN205399412U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144515A (en) * | 2020-09-30 | 2020-12-29 | 河北昊锐基础工程有限公司 | Anti-collapse hole construction method for rotary digging pile |
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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 |
Granted publication date: 20160727 Termination date: 20200303 |
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| CF01 | Termination of patent right due to non-payment of annual fee |