CN207567757U - A kind of novel prefabricated steel-pipe pile - Google Patents
A kind of novel prefabricated steel-pipe pile Download PDFInfo
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- CN207567757U CN207567757U CN201721675700.6U CN201721675700U CN207567757U CN 207567757 U CN207567757 U CN 207567757U CN 201721675700 U CN201721675700 U CN 201721675700U CN 207567757 U CN207567757 U CN 207567757U
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Abstract
The utility model is related to a kind of novel prefabricated steel-pipe piles, belong to building pile foundation engineering technical field, the resistance to compression and anti-pulling capacity to solve the problems, such as stake are low to be designed.The utility model is made of top pile body, floor, injected hole, lower part pile body, the edge of a wing and pile top；The top pile body is hollow variable cross-section pile body, and big section pile body is round estrade, and small bore pile body is cylinder, and pile body outer surface is equipped with 4 floors being symmetric, and floor side surface is trapezoidal, and injected hole is equipped between floor；The lower part pile body is hollow cylinder, and pile body side wall is equipped with the edge of a wing, injected hole is equipped between the edge of a wing；Quadrangular is in the edge of a wing and outer end face is in vertical distribution, is 45 ° with pile body angle, length is from top to bottom gradually reduced.The structure construction is easy, and engineering practicability is strong, it can be achieved that the reinforcing of pile peripheral earth, increases substantially pile side friction, can be widely applied in various types of soft soil foundations.
Description
Technical field
The utility model belongs to building pile foundation engineering technical field, and in particular to a kind of novel prefabricated steel-pipe pile, the structure
The reinforcing of pile peripheral earth can be achieved, increase substantially pile side friction, can be widely applied in various types of soft soil foundations.
Background technology
As the fast development of modern architecture industry and the breakthrough of science and technology are with being constantly progressive, in China's Coastal Areas
Engineering construction project gradually increase, and China's Coastal Areas it is widely distributed various types of soft soil layers, weak soil class stratum
Compressibility is high, water content is big, and foundation capability and shearing strength are all very low, and engineering construction is carried out on this kind of ground
Easily there is larger differential settlement, structural instability is caused to destroy, therefore consolidation process need to be carried out to original ground, and use and beat
Enter prefabricated steel-pipe pile to improve load be one of more commonly used method.Soft soil foundation porosity is high, is difficult to densification, and tradition is pre-
Steel-pipe pile surface processed is smooth, and stake and the effect of surrounding soil layer are weaker, and pile side friction is difficult to play, and bearing capacity is relatively low, in order to
It solves the above problems, in project of national nature science fund project（Number：41372288）Subsidy under, we have developed a kind of novel
Prefabricated steel-pipe pile realizes the reinforcing of various types of soft soil foundations, so as to improve bearer properties, reduces differential settlement, with full
The needs of sufficient engineering reality.
Invention content
The technical problems to be solved in the utility model is：A kind of novel prefabricated steel-pipe pile is provided, can realize pile peripheral earth
Reinforcing, increase substantially pile side friction, can be widely applied in various types of soft soil foundations.
Technical solution adopted in the utility model is：A kind of novel prefabricated steel-pipe pile, it is mainly by top pile body, rib
Plate, injected hole, lower part pile body, the edge of a wing and pile top composition；It is characterized in that, the top pile body is hollow non-uniform pile
Body, perpendicular dotted line represent inner surface of tube wall, and big section pile body is round estrade, and upper end area is more than lower end surface, small bore
Pile body is cylinder, and pile body outer surface is equipped with 4 floors being symmetric, and floor side surface is trapezoidal, and lower edge length is more than
The top length of side is equipped with injected hole between floor, and the lower part pile body is hollow cylinder, and pile body side wall is equipped with the edge of a wing, the wing
Injected hole is equipped between edge, horizontal dotted line represents slip casting internal surface of hole.Quadrangular is in the edge of a wing and outer end face is in vertical point
Cloth is 45 ° with pile body angle, and length is from top to bottom gradually reduced.
Preferably, top pile body is hollow variable cross-section pile body, and small bore pile body is equipped with 4 floors being symmetric,
Injected hole is equipped between floor.
Preferably, pile body side wall in lower part is equipped with the edge of a wing, is 45 ° with pile body angle, edge of a wing length from top to bottom gradually subtracts
It is small.
The construction usage method of the utility model is：A kind of novel prefabricated steel-pipe pile, during construction, using stake machine by pre-manufactured steel
Pile pile slowly squeezes into designed elevation in ground, and the verticality of pile body is no more than 0.5% during control is squeezed into；By prefabricated steel pipe
After Foundation Design absolute altitude is squeezed into stake, a machine is removed, high-pressure slip-casting equipment is connected with the hollow part of stake top carries out slip casting behaviour
Make, slurries is made to enter inside pile body, slurries are full of behind pile body inside is exuded to stake week soft soil layer, and fill up pile body from injected hole
With the gap between soil layer around, harden upper back variable cross-section pile body and floor is combined as a whole with surrounding soil layer, lower part pile body
It is combined as a whole with the edge of a wing and surrounding soil layer, completes construction.
The operation principle of the utility model is：A kind of novel prefabricated steel-pipe pile, the big section pile body of top pile body are round estrade,
Face area is from top to bottom gradually reduced, and is realized the variable cross-section of pile body, is increased pile side friction；Small bore pile body surface is set
There are 4 floors, floor upper and lower surface links together with big section pile body, and the big section pile body on top can will be born by floor
Load pass to the big section pile body of lower part, big section pile body is made to be more than the common stress of part of small bore pile body, is improved
The Compressive Bearing Capacity of stake, floor side surface are trapezoidal, and lower edge length is long more than upper edge, stress spread is realized, so as to improve
The bearing capacity of stake；Lower part pile body side wall increases the contact area of pile body and surrounding soil, the length on the edge of a wing by setting the edge of a wing
It is from top to bottom gradually reduced, realizes the variable cross-section of pile body, improve pile side friction；Top pile body small bore pile body wing plate it
Between be designed with injected hole between the pile body edge of a wing of lower part, inject slurries in gap that can be between stake and soil, form Seed harvest, make
Pile body connect more secured with surrounding soil, so as to being reinforced to stake week ground, improves pile body bearing capacity.
The beneficial effects of the utility model are：A kind of novel prefabricated steel-pipe pile, the big section pile body of top pile body are variable cross-section
Round estrade, and be equipped with floor in small bore pile body, top variable cross-section pile body and floor can and the soil body of surrounding combine closely
Together, make pile body stress and earth stress harmonious, so as to increase the firm performance of pile foundation and compressive property；Top
Injected hole is designed between the pile body edge of a wing of lower part between pile body small bore pile body floor, is noted in gap that can be between stake and soil
Enter slurries, form Seed harvest, pile body is made to be connect with surrounding soil more secured, so as to be reinforced to stake week ground, improve
Pile body bearing capacity；Top pile body injected hole is arranged on small bore pile body, and be arranged between floor, lower part pile body note
Slurry hole is arranged between the edge of a wing, since the big section pile body of top pile body and floor and the lower part pile body edge of a wing have more a part, therefore
Injected hole will not be in direct contact with soil, can effectively prevent slip casting hole plug, and increase the contact area of pile body and slurries, engineering
It is highly practical；Lower part pile body side wall is equipped with the edge of a wing, and the edge of a wing and pile holder angle are 45 °, and edge of a wing length is from top to bottom gradually reduced, can be with
It relatively easily squeezes into ground, and the edge of a wing can generate synergistic effect with the soil layer of surrounding, can be effectively improved pile peripheral earth
Physico-mechanical properties, so as to improve pile body bearing capacity.
Description of the drawings
Fig. 1 is a kind of novel prefabricated steel-pipe pile schematic diagram of the utility model.
Reference numeral：（1）Top pile body；（2）Floor；（3）Injected hole；（4）Lower part pile body；（5）The edge of a wing；（6）Pile top.
Specific embodiment
The utility model is described further below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of novel prefabricated steel-pipe pile, it is mainly by top pile body（1）, floor（2）, injected hole（3）, under
Portion's pile body（4）, the edge of a wing（5）And pile top（6）Composition；It is characterized in that, the top pile body（1）For hollow non-uniform pile
Body, perpendicular dotted line represent inner surface of tube wall, and big section pile body is round estrade, and upper end area is more than lower end surface, small bore
Pile body is cylinder, and pile body outer surface is equipped with 4 floors being symmetric（2）, floor（2）Side surface is trapezoidal, lower edge
The long upper edge that is more than is long, floor（2）Between be equipped with injected hole（3）, the lower part pile body is hollow cylinder, pile body side wall
Equipped with the edge of a wing（5）, the edge of a wing（5）Between be equipped with injected hole（3）, horizontal dotted line represents injected hole（3）Inner surface.The edge of a wing
（5）For quadrangular and outer end face is in vertical distribution, is 45 ° with pile body angle, length is from top to bottom gradually reduced.
During pile, prefabricated steel-pipe pile as described above is precast in factory with stake diameter according to the required stake in scene is long, in advance
Each section of steel-pipe pile processed, which should be, to be welded to connect or is integrally formed, and makes it have enough intensity.
During construction, prefabricated steel-pipe pile is slowly squeezed into designed elevation in ground, pile body during control is squeezed into using stake machine
Verticality be no more than 0.5%；After prefabricated steel-pipe pile is squeezed into Foundation Design absolute altitude, remove a machine, by high-pressure slip-casting equipment with
The hollow part of stake top, which is connected, carries out grouting operation, slurries is made to enter inside pile body, slurries are full of behind pile body inside from pulp
Hole is exuded to stake week soft soil layer, and fills up the gap between pile body and surrounding soil layer, hardens upper back variable cross-section pile body and rib
Plate is combined as a whole with surrounding soil layer, and lower part pile body and the edge of a wing are combined as a whole with surrounding soil layer, completes construction.
As an improvement, top pile body is hollow variable cross-section pile body, small bore pile body is equipped with 4 ribs being symmetric
Plate is equipped with injected hole between floor.
As an improvement, lower part pile body side wall is equipped with the edge of a wing, it is 45 ° with pile body angle, edge of a wing length is gradual from top to bottom
Reduce.
Claims (1)
1. a kind of novel prefabricated steel-pipe pile, it is mainly by top pile body（1）, floor（2）, injected hole（3）, lower part pile body（4）, the wing
Edge（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 table
Showing inner surface of tube wall, big section pile body is round estrade, and upper end area is more than lower end surface, and small bore pile body is cylinder,
Pile body outer surface is equipped with 4 floors being symmetric（2）, floor（2）Side surface is trapezoidal, and lower edge length is more than upper edge
It is long, floor（2）Between be equipped with injected hole（3）；The lower part pile body is hollow cylinder, and pile body side wall is equipped with the edge of a wing（5）,
The edge of a wing（5）Between be equipped with injected hole（3）, horizontal dotted line represents injected hole（3）Inner surface；The edge of a wing（5）For quadrangular and
Outer end face is 45 ° with pile body angle, length is from top to bottom gradually reduced in vertical distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721675700.6U CN207567757U (en) | 2017-12-06 | 2017-12-06 | A kind of novel prefabricated steel-pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721675700.6U CN207567757U (en) | 2017-12-06 | 2017-12-06 | A kind of novel prefabricated steel-pipe pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207567757U true CN207567757U (en) | 2018-07-03 |
Family
ID=62690370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721675700.6U Expired - Fee Related CN207567757U (en) | 2017-12-06 | 2017-12-06 | A kind of novel prefabricated steel-pipe pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207567757U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111472376A (en) * | 2020-03-17 | 2020-07-31 | 中国电力工程顾问集团西北电力设计院有限公司 | Construction method of prefabricated root key type sheet pile foundation |
| CN111636415A (en) * | 2020-06-09 | 2020-09-08 | 沙焕焕 | Multi-functional intelligent response precast pile |
| CN111877337A (en) * | 2020-06-16 | 2020-11-03 | 中交第三公路工程局有限公司 | Foundation pile construction method |
| CN114703882A (en) * | 2022-01-17 | 2022-07-05 | 东北石油大学 | Anti-pulling steel pile foundation with continuous trapezoidal rib plates |
-
2017
- 2017-12-06 CN CN201721675700.6U patent/CN207567757U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111472376A (en) * | 2020-03-17 | 2020-07-31 | 中国电力工程顾问集团西北电力设计院有限公司 | Construction method of prefabricated root key type sheet pile foundation |
| CN111636415A (en) * | 2020-06-09 | 2020-09-08 | 沙焕焕 | Multi-functional intelligent response precast pile |
| CN111877337A (en) * | 2020-06-16 | 2020-11-03 | 中交第三公路工程局有限公司 | Foundation pile construction method |
| CN114703882A (en) * | 2022-01-17 | 2022-07-05 | 东北石油大学 | Anti-pulling steel pile foundation with continuous trapezoidal rib plates |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180703 Termination date: 20181206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |