CN207619975U - A kind of prefabricated steel-pipe pile of Novel variable-section - Google Patents
A kind of prefabricated steel-pipe pile of Novel variable-section Download PDFInfo
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- CN207619975U CN207619975U CN201721675628.7U CN201721675628U CN207619975U CN 207619975 U CN207619975 U CN 207619975U CN 201721675628 U CN201721675628 U CN 201721675628U CN 207619975 U CN207619975 U CN 207619975U
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- pile body
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- extravasating hole
- floor
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Abstract
The utility model is related to a kind of prefabricated steel-pipe piles of Novel variable-section, belong to building pile foundation engineering technical field, to solve the problems, such as pile foundation resistance to compression and anti-pulling capacity is low designs.The utility model is made of top pile body, extravasating hole, floor, lower part pile body, arc wing plate and pile top；The top pile body is hollow variable cross-section pile body, perpendicular dotted line indicates inner surface of tube wall, and similar to being I-shaped, small bore pile body is equipped with 4 floors being symmetric for big section pile body longitudinal section, floor side surface is rectangle and is equipped with extravasating hole, and horizontal dotted line indicates extravasating hole inner surface；The lower part pile body is hollow cylinder, and pile body outer surface is equipped with 4 arc wing plates being symmetric, and outer end face area is more than inner face, extravasating hole is equipped between arc wing plate.The structure construction is convenient, and engineering practicability is strong, can increase substantially pile side friction, and pile strength is relatively high, is applicable in the more complicated soft soil foundation of geological conditions.
Description
Technical field
The utility model belongs to building pile foundation engineering technical field, and in particular to a kind of prefabricated steel-pipe pile of Novel variable-section,
The structure can increase substantially pile side friction, and pile strength is relatively high, be applicable to the more complicated weak soil of geological conditions
In ground.
Background technology
The developed areas such as China's southeastern coast and inland river lake basins it is widely distributed soft soil foundation, have strong
The features such as low, sedimentation and deformation is big, stability is poor is spent, the consolidation process of soft soil foundation is urban construction, rail traffic, railway, machine
Therefore the key technical problem of the civil engineering constructions field face such as field, highway, municipal works improves soft soil foundation
Strength and stability, the inhomogeneous deformation for reducing architecture basics, the integrated carrying level for improving ground, are that all kinds of construction projects exist
Basic demand in Soft Ground, and in engineering construction, pile foundation is the base form of common reinforcing soft ground.
Since the structure of soil property in soft soil foundation is more open, there is larger gap between grogs, the effect of stake and surrounding soil layer compared with
Weak, pile side friction is difficult to play, and bearing capacity is relatively low, therefore, for the feature of all kinds of soft soil foundations, in National Natural Science
Fund project（Number：41372288）Subsidy under, it is bad to carry out that we have developed a kind of prefabricated steel-pipe pile of Novel variable-section
The processing of geology ground reduces uneven settlement of foundation to improve the bearer properties of stake.
Invention content
The technical problems to be solved in the utility model is：A kind of prefabricated steel-pipe pile of Novel variable-section is provided, it can be significantly
Pile side friction is improved, pile strength is relatively high, is applicable in the more complicated soft soil foundation of geological conditions.
Technical solution adopted in the utility model is：A kind of prefabricated steel-pipe pile of Novel variable-section, it is mainly by top stake
Body, extravasating hole, floor, lower part pile body, arc wing plate and pile top composition；It is characterized in that, the top pile body is hollow
Variable cross-section pile body, perpendicular dotted line indicate inner surface of tube wall, and similar to being I-shaped, small bore pile body is equipped with for big section pile body longitudinal section
4 floors being symmetric, floor side surface is rectangle and is equipped with extravasating hole, and horizontal dotted line indicates extravasating hole inner surface；Institute
The lower part pile body stated is hollow cylinder, and pile body outer surface is equipped with 4 arc wing plates being symmetric, outer end face area
More than inner face, extravasating hole is equipped between arc wing plate.
Preferably, top pile body is hollow variable cross-section pile body, and similar big section pile body longitudinal section is I-shaped, small bore
Pile body is equipped with 4 floors being symmetric, and floor side surface is equipped with extravasating hole.
Preferably, pile body outer surface in lower part is equipped with 4 arc wing plates being symmetric, and outer end face area is more than inner end
Face is equipped with extravasating hole between arc wing plate.
The construction usage method of the utility model is：A kind of Novel variable-section prefabricated steel-pipe pile when construction, uses stake machine will
The prefabricated steel-pipe pile of variable cross-section slowly squeezes into designed elevation in ground, and the verticality of pile body is no more than 0.5% during control is squeezed into；
After the prefabricated steel-pipe pile of variable cross-section is squeezed into Foundation Design absolute altitude, a machine is removed, by the hollow portion of high-pressure slip-casting equipment and stake top
Position, which is connected, carries out grouting operation, and slurries is made to enter inside pile body, and slurries are full of behind pile body inside is exuded to stake week from extravasating hole
Soft soil layer, and fill up the gap between top pile body and surrounding soil layer, after hardening, top variable cross-section pile body and floor and surrounding
Soil layer is combined as a whole, and lower part pile body and arc wing plate are combined as a whole with surrounding soil layer, completes construction.
The operation principle of the utility model is：A kind of prefabricated steel-pipe pile of Novel variable-section, the big section pile body of top pile body are vertical
Section is recessed a part, increases the contact area of stake and surrounding soil layer, improve stake similar to being I-shaped that is, in pile body periphery
Side friction, resistance to compression and extraction-resistant behavior are relatively good；Small bore pile body surface is equipped with 4 floors, floor upper and lower surface and big section
Pile body links together, and the load born can be passed to the big section pile body of lower part by the big section pile body on top by floor,
Big section pile body is set to be more than the common stress of part of small bore pile body, to improve the Compressive Bearing Capacity of stake, on small bore
Equipped with floor, while the contact area of stake and the soil body is also increased, improves pile side friction；Lower part pile body outer surface is equipped with 4
A arc wing plate, and outer end face area is bigger, not only increases the contact area of pile body and surrounding soil, but also improve stake
Side friction, pile strength is relatively high, to improve the bearing capacity of stake；Top pile body floor side surface and lower part pile body arc
It is designed with extravasating hole between wing plate, slurries are injected in gap that can be between stake and soil, forms Seed harvest, makes pile body and surrounding soil
Body connection is more secured, to be reinforced to stake week ground, improves pile body bearing capacity.
The utility model has the beneficial effects that：A kind of prefabricated steel-pipe pile of Novel variable-section, the big section pile body of top pile body are vertical
Similar section is I-shaped, and is equipped with floor in small bore pile body, and top variable cross-section pile body and floor can be tight with the soil layer of surrounding
It is close to be combined together, keep pile body stress and earth stress harmonious, to increase the firm performance and crushing resistance of pile foundation
Energy；It is designed with extravasating hole between top pile body floor side surface and lower part pile body arc wing plate, gap that can be between stake and soil
Middle injection slurries form Seed harvest, so that pile body is connect with surrounding soil more secured, to be reinforced to stake week ground,
Improve pile body bearing capacity；In floor side surface, lower part pile body extravasating hole is arranged in arcuate rib for top pile body extravasating hole setting
Between plate, extravasating hole will not be in direct contact with soil when piling, extravasating hole can be effectively prevent to block, and increase pile body and slurries
Contact area, engineering practicability are strong；Lower part pile body outer surface is equipped with arc wing plate, since arc shaped wing plate level extending portion point compares
It is short, it can relatively easily squeeze into ground, and arc wing plate can generate synergistic effect with the soil layer of surrounding, can be effectively improved
The physico-mechanical properties of pile peripheral earth, to improve pile body bearing capacity.
Description of the drawings
Fig. 1 is a kind of prefabricated steel-pipe pile schematic diagram of Novel variable-section of the utility model.
Fig. 2 is the utility model top pile body small bore pile body cross-sectional view.
Fig. 3 is the utility model lower part pile body cross-sectional view.
Reference numeral：（1）Top pile body；（2）Extravasating hole；（3）Floor；（4）Lower part pile body；（5）Arc wing plate；（6）Stake
Point.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of prefabricated steel-pipe pile of Novel variable-section, it is mainly by top pile body（1）, extravasating hole（2）, floor
（3）, lower part pile body（4）, arc wing plate（5）And pile top（6）Composition；It is characterized in that, the top pile body（1）It is hollow
Variable cross-section pile body, perpendicular dotted line indicate inner surface of tube wall, and similar to being I-shaped, small bore pile body is equipped with for big section pile body longitudinal section
4 floors being symmetric（3）, floor（3）Side surface is rectangle and is equipped with extravasating hole（2）, horizontal dotted line indicates extravasating hole
（2）Inner surface；The lower part pile body（4）For hollow cylinder, pile body outer surface is equipped with 4 arc shaped wings being symmetric
Plate（5）, outer end face area is more than inner face, arc wing plate（5）Between be equipped with extravasating hole（2）.
As shown in Fig. 2, top pile body（1）Small bore pile body is equipped with 4 floors being symmetric（3）, floor（3）Side
Surface is rectangle and is equipped with extravasating hole（2）.
As shown in figure 3, lower part pile body（4）For hollow cylinder, pile body outer surface is equipped with 4 arcs being symmetric
Wing plate（5）, outer end face area is more than inner face, arc wing plate（5）Between be equipped with extravasating hole（2）, dotted line expression extravasating hole（2）
Inner surface.
When pile, the prefabricated steel pipe of variable cross-section as described above is precast in factory with stake diameter according to the required stake in scene is long
Stake, each section of the prefabricated steel-pipe pile of variable cross-section, which should be, to be welded to connect or is integrally formed, and enough intensity is made it have.
When construction, the prefabricated steel-pipe pile of variable cross-section is slowly squeezed into designed elevation in ground using stake machine, process is squeezed into control
The verticality of middle pile body is no more than 0.5%；After the prefabricated steel-pipe pile of variable cross-section is squeezed into Foundation Design absolute altitude, a machine is removed, it will be high
Pressure grouting equipment is connected with the hollow part of stake top carries out grouting operation, so that slurries is entered inside pile body, slurries are full of pile body
It is exuded to stake week soft soil layer from extravasating hole behind inside, and fills up the gap between top pile body and surrounding soil layer, after hardening, on
Portion's variable cross-section pile body and floor are combined as a whole with surrounding soil layer, and lower part pile body and arc wing plate are combined into one with surrounding soil layer
Body completes construction.
As an improvement, top pile body is hollow variable cross-section pile body, big section pile body longitudinal section is similar be it is I-shaped, small section
Face pile body is equipped with 4 floors being symmetric, and floor side surface is equipped with extravasating hole.
As an improvement, lower part pile body outer surface is equipped with 4 arc wing plates being symmetric, outer end face area is more than interior
End face is equipped with extravasating hole between arc wing plate.
Claims (1)
1. a kind of prefabricated steel-pipe pile of Novel variable-section, it is mainly by top pile body（1）, extravasating hole（2）, floor（3）, lower part pile body
（4）, arc wing plate（5）And pile top（6）Composition；It is characterized in that, the top pile body（1）For hollow variable cross-section pile body,
Perpendicular dotted line indicates inner surface of tube wall, and big section pile body longitudinal section is I-shaped, and small bore pile body is equipped with 4 and is symmetric
Floor（3）, floor（3）Side surface is rectangle and is equipped with extravasating hole（2）, horizontal dotted line indicates extravasating hole（2）Inner surface；Described
Lower part pile body（4）For hollow cylinder, pile body outer surface is equipped with 4 arc wing plates being symmetric（5）, outer end face face
Product is more than inner face, arc wing plate（5）Between be equipped with extravasating hole（2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721675628.7U CN207619975U (en) | 2017-12-06 | 2017-12-06 | A kind of prefabricated steel-pipe pile of Novel variable-section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721675628.7U CN207619975U (en) | 2017-12-06 | 2017-12-06 | A kind of prefabricated steel-pipe pile of Novel variable-section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207619975U true CN207619975U (en) | 2018-07-17 |
Family
ID=62825554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721675628.7U Expired - Fee Related CN207619975U (en) | 2017-12-06 | 2017-12-06 | A kind of prefabricated steel-pipe pile of Novel variable-section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207619975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095590A (en) * | 2020-09-28 | 2020-12-18 | 刘守进 | Spiral cone soil-squeezing pressure-filling pile with screw teeth, drill bit device for pile forming and pile forming method |
-
2017
- 2017-12-06 CN CN201721675628.7U patent/CN207619975U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095590A (en) * | 2020-09-28 | 2020-12-18 | 刘守进 | Spiral cone soil-squeezing pressure-filling pile with screw teeth, drill bit device for pile forming and pile forming method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180717 Termination date: 20181206 |