CN107023000B - Native staking contacting surface friction control formula precast concrete pile and pile-driving method - Google Patents
Native staking contacting surface friction control formula precast concrete pile and pile-driving method Download PDFInfo
- Publication number
- CN107023000B CN107023000B CN201710271192.3A CN201710271192A CN107023000B CN 107023000 B CN107023000 B CN 107023000B CN 201710271192 A CN201710271192 A CN 201710271192A CN 107023000 B CN107023000 B CN 107023000B
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- China
- Prior art keywords
- wedge block
- pile body
- pile
- wedge
- precast concrete
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
Abstract
A kind of soil staking contacting surface friction control formula precast concrete pile, including pile body and several wedge block groups that pile body week side surface is arranged in, the wedge block group includes the first wedge block and the second wedge block, and two wedge blocks arrange that bottom surface is attached on pile body along the axial direction of pile body, slope surface is towards on the outside of pile body, and the major part of two wedge blocks is to withstanding on together, wherein the top of the second wedge block is arranged in the first wedge block, when driving piles, the first wedge block it is big upside down.It second wedge block and its is made with the connector of pile body of degradable material, or the bonding strength of first wedge block and pile body is designed as the bonding strength greater than the second wedge block and pile body, so that the second wedge block is easy to degrade or is easy to be detached from from pile body under active force, contact the stub end of the first wedge block can with soil directly after the second wedge block is degraded or is detached from, the soil bearing capacity upward to its is born, subgrade soil is overcome to provide the hypodynamic defect of side friction.
Description
Technical field
The present invention relates to technical field of civil engineering, specially a kind of native staking contacting surface friction control formula precast concrete pile
And pile-driving method.
Background technique
The prefabricated pile of reinforced concrete structure is usually applied to foundation, and in the case where weak soil base, prefabricated pile is beaten
Enter underground, provides the load that pile foundation needs to undertake building by the side-friction force formed between pile body and soil.If soft
Soil density too urine needs to squeeze into the longer prefabricated pile of length in soil base, and even more prefabricated pile tandem arrays are squeezed into
To underground, load is changed with length, but too long pile foundation will cause the raising of cost, need to contact surface between soil and stake
Frictional force is controlled, to guarantee ability that prefabricated pile has enough bearing loads.
Summary of the invention
Technical purpose of the invention is to provide a kind of native staking contacting surface friction control formula precast concrete pile and pile-driving method,
To improve the deficiencies in the prior art.
Technical solution provided by the invention are as follows:
Scheme one:
A kind of soil staking contacting surface friction control formula precast concrete pile, if including pile body and pile body week side surface is arranged in
Dry wedge block group, it is characterised in that: the wedge block group includes the first wedge block and the second wedge block, and two wedge blocks are along pile body
Axial arrangement, underrun connector is attached on the pile body, and slope surface is towards on the outside of pile body, and the major part of two wedge blocks
To withstanding on together, the top of the second wedge block is arranged in the first wedge block, that is, when driving piles, the first wedge block it is big upside down；Its
In, second wedge block and its degradation material is all made of with the connector of pile body is made.
The degradation material preferably uses starch plastic.
First wedge block is concrete material, and the connector of the first wedge block and pile body is metal material.
Scheme two:
A kind of soil staking contacting surface friction control formula precast concrete pile, if including pile body and pile body week side surface is arranged in
Dry wedge block group, it is characterised in that: the wedge block group includes the first wedge block and the second wedge block, and two wedge blocks are along pile body
Axial arrangement, underrun connector is attached on the pile body, and slope surface is towards on the outside of pile body, and the major part of two wedge blocks
To withstanding on together, the top of the second wedge block is arranged in the first wedge block, that is, when driving piles, the first wedge block it is big upside down；Its
In, the bonding strength of first wedge block and pile body is greater than the bonding strength of the second wedge block and pile body.
On the basis of above scheme, further improvement or preferred scheme further include:
The rotating lever spliced eye of pile body axle center two sides is symmetricly set on there are two setting at the top of the pile body.
The rotating lever includes a cross bar and two vertical inserted links for being vertically connected on lower section in the middle part of cross bar, rotates pile body
When, two vertical inserted links are respectively inserted in two spliced eyes, apply the active force for pushing pile body rotation by the cross bar.
The pile-driving method of native staking contacting surface friction control formula precast concrete pile described in two schemes as above, feature exist
In, comprising the following steps:
(1) pile body with several groups wedge block group is driven underground vertically；
(2) active force is applied to pile body, makes its rotation, the second wedge block is promoted to fall off from pile body surface, make the first wedge shape
The stub end bottom surface of block contacts soil.
The utility model has the advantages that
(1) in the prior art, pile body can only form the load of vertical direction by the frictional force between pile body side and soil
Lotus, and in the present embodiment, the load not only converted with frictional force, in the degradation of the second wedge block or after pile body surface disengaging,
First wedge block big end surface is directly contacted with lower section soil, so that pile body compensates for existing skill to bearing capacity straight up
The deficiency of art overcomes subgrade soil to a certain extent and provides the hypodynamic defect of side friction.
(2) during piling, the second wedge block can provide protection for first wedge shape block.When piling, the first wedge block
Big end surface need to carry very big pressure, after pile body is driven underground, if the buffering without the second wedge block slope surface is anti-
Shield effect, the first wedge block can fall off from pile body 1 substantially, and (soil is to the when the riveting fixed force of rivet is not enough to fight piling
The thrust of one wedge block).
(3) present invention is novel in design, scientific and reasonable, easy to implement, and implementation cost is low, is suitble to promote the use of.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of precast concrete pile pile body and wedge block group in specific embodiment；
Fig. 2 is the structural schematic diagram of the first wedge block and the second wedge block；
Fig. 3 is the working principle diagram of precast concrete pile and leverage tool cooperation；
In figure: 1, pile body, the 2, first wedge block, the 3, second wedge block, 4, riveting nail, 5, nail hole, 6, spliced eye, 7, insert
Bar, 8, cross bar.
Specific embodiment
For the technical solution and working principle that the present invention is furture elucidated, with reference to the accompanying drawing with specific embodiment to this
Detailed introduction is done in invention.
Embodiment one:
As shown in Figure 1 to Figure 3, a kind of native staking contacting surface friction control formula precast concrete pile, including pile body 1, the stake
Body is hollow circular-tube structure, and the hollow axial line through the pile body 1.
All side surfaces of the pile body 1 are evenly arranged the array that multiple wedge block groups are constituted.
The wedge block group includes the first wedge block 2 and the second wedge block 3, and two wedge blocks are along the axial cloth of pile body 1
It sets, as shown in Fig. 2, the bottom surface of the first wedge block 2 is set there are four nail hole 5, the bottom surface of the second wedge block 3 is equipped with a nail hole, two
Wedge block passes through connector respectively and is attached on the pile body 1, and slope surface is towards the outside of pile body 1, and the major part of two wedge blocks
To withstanding on together, wherein the top of the second wedge block 3 is arranged in the first wedge block 2, that is, when driving piles, the major part of the first wedge block 2
Downward.
First wedge block 2 is concrete material, and the first wedge block 2 is fixed on pile body 1 by four metal rivets 4
On, second wedge block 3 rivet made of a plastic material is fixed on pile body 1, so that first wedge block 2
The bonding strength of the second wedge block 2 and pile body 1 is significantly larger than with the bonding strength of pile body 1.
The top of the pile body 1 is equipped with two groups of rotating lever spliced eyes 6, and one group of spliced eye includes two and is symmetricly set on stake
The cell orifice of body axle center two sides.The rotating lever includes a cross bar 8 and is vertically connected on two of the 8 middle part lower section of cross bar
Vertical inserted link 7, makes its structure in " ∏ " shape, and the position of two inserted links 7 is horizontally stretched out as force operation in the both ends of cross bar 7
Portion.
The pile-driving method of the soil staking contacting surface friction control formula precast concrete pile, process are as follows:
Firstly, the above-mentioned pile body 1 with several groups wedge block group is driven underground vertically；
Later, two inserted links 7 of the rotating lever are inserted at the top of pile body in any group of spliced eye 6, by rotating institute
The active force that cross bar 8 applies torsion pile body 1 is stated, pile body 1 is rotated, makes the first wedge block 2 with the second wedge block 3 by parallel
In the soil propelling force of pile body cross-sectional direction.Since the first wedge block 2 passes through more rivets on pile body 1, and rivet is certainly
Body intensity is higher, can bear biggish soil propelling force, and the second wedge block 3 is due to only having the not high plastics riveting of an intensity
Nail riveting is easy to fall off from pile body 1, therefore the active force should be controlled in the feelings for not influencing the first wedge block 2 and connecting with pile body 1
Under condition, the second wedge block 3 is promoted to fall off from 1 surface of pile body, to keep the bottom surface of major part one end of the first wedge block 2 and soil straight
The soil bearing capacity upward to its is born in contact.
Embodiment two:
As shown in Figure 1, a kind of soil staking contacting surface friction control formula precast concrete pile, including pile body 1, the pile body 1 are
Hollow circular-tube structure, and the hollow axial line through the pile body 1.
All side surfaces of the pile body 1 are evenly arranged the array that multiple wedge block groups are constituted, and the wedge block group includes
First wedge block 2 and the second wedge block 3, for two wedge blocks along the axial direction arrangement of pile body 1, two wedge blocks pass through connector respectively
It being attached on the pile body 1, slope surface is towards the outside of pile body 1, and the major part of two wedge blocks is to withstanding on together, as shown in Fig. 2,
Wherein, the top of the second wedge block 3 is arranged in the first wedge block 2, that is, when driving piles, the first wedge block 2 it is big upside down.
First wedge block 2 is concrete material, and the first wedge block 2 can be fixed on pile body 1 by multiple metal rivets 4
On, second wedge block 3 is made of degradation material, equally rivet made of degradation material is used to fix one
On pile body 1.
In the present embodiment, the degradable material preferably uses starch plastic, makes the second wedge block 3 in three days
Gradually to dissolve degradation by the moisture in contact soil, the major part bottom surface of such first wedge block 2 can directly be connect
Soil is touched, the soil bearing capacity upward to its is born, therefore after pile body 1 is driven underground, it can not also to the rotation process of pile body
Implement.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, the present invention
Claimed range is delineated by the appended claims, the specification and equivalents thereof from the appended claims.
Claims (7)
1. a kind of soil staking contacting surface friction control formula precast concrete pile, including pile body and is arranged in the several of pile body week side surface
Wedge block group, it is characterised in that: the wedge block group includes the first wedge block and the second wedge block, and two wedge blocks are along pile body
Axial arrangement, underrun connector are attached on the pile body, and slope surface is towards on the outside of pile body, and the major part pair of two wedge blocks
Withstand on together, the top of the second wedge block is arranged in the first wedge block, that is, when driving piles, the first wedge block it is big upside down；Wherein,
Second wedge block and its degradation material is all made of with the connector of pile body is made.
2. a kind of native staking contacting surface friction control formula precast concrete pile according to claim 1, which is characterized in that described
Degradation material is starch plastic.
3. a kind of native staking contacting surface friction control formula precast concrete pile according to claim 1, which is characterized in that described
First wedge block is concrete material, and the connector of the first wedge block and pile body is metal material.
4. a kind of soil staking contacting surface friction control formula precast concrete pile, including pile body and is arranged in the several of pile body week side surface
Wedge block group, it is characterised in that: the wedge block group includes the first wedge block and the second wedge block, and two wedge blocks are along pile body
Axial arrangement, underrun connector are attached on the pile body, and slope surface is towards on the outside of pile body, and the major part pair of two wedge blocks
Withstand on together, the top of the second wedge block is arranged in the first wedge block, that is, when driving piles, the first wedge block it is big upside down；Wherein,
The bonding strength of first wedge block and pile body is greater than the bonding strength of the second wedge block and pile body.
5. a kind of native staking contacting surface friction control formula precast concrete pile according to claim 4, it is characterised in that: in institute
State the rotating lever spliced eye that pile body axle center two sides are symmetricly set on there are two setting at the top of pile body.
6. a kind of native staking contacting surface friction control formula precast concrete pile according to claim 5, it is characterised in that: described
Rotating lever includes a cross bar and two vertical inserted links for being vertically connected on lower section in the middle part of cross bar, and when rotating pile body, two vertical
Inserted link is respectively inserted in two spliced eyes, applies the active force for pushing pile body rotation by the cross bar.
7. a kind of piling used in staking contacting surface friction control formula precast concrete pile native as described in any one of claim 1-6
Method, which comprises the following steps:
(1) pile body with several groups wedge block group is driven underground vertically；
(2) active force is applied to pile body, makes its rotation, the second wedge block is promoted to fall off from pile body surface, keeps the first wedge block big
The bottom surface at first end contacts soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710271192.3A CN107023000B (en) | 2017-04-24 | 2017-04-24 | Native staking contacting surface friction control formula precast concrete pile and pile-driving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710271192.3A CN107023000B (en) | 2017-04-24 | 2017-04-24 | Native staking contacting surface friction control formula precast concrete pile and pile-driving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107023000A CN107023000A (en) | 2017-08-08 |
| CN107023000B true CN107023000B (en) | 2019-04-12 |
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ID=59527995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710271192.3A Active CN107023000B (en) | 2017-04-24 | 2017-04-24 | Native staking contacting surface friction control formula precast concrete pile and pile-driving method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2464776Y (en) * | 2000-10-09 | 2001-12-12 | 贺德新 | Multi-section three-fork extruding-enlarging pile |
| CN200968002Y (en) * | 2006-11-15 | 2007-10-31 | 武汉武大巨成加固实业有限公司 | Multiple layer back taper type wedge-locking roofbolt |
| CN201908299U (en) * | 2010-12-30 | 2011-07-27 | 天津市银龙预应力钢材集团有限公司 | Concrete pipe pile with high bearing capacity |
| CN102720218A (en) * | 2012-06-29 | 2012-10-10 | 李国忠 | Deep-hole inverted-T-shaped pile based high-rise earthquake-resistant building structure |
| JP2015031019A (en) * | 2013-08-01 | 2015-02-16 | Ｊｆｅスチール株式会社 | Member for being driven into ground |
| CN205329680U (en) * | 2015-11-05 | 2016-06-22 | 山东科技大学 | Antitorque pile foundation structure of resistance to plucking |
-
2017
- 2017-04-24 CN CN201710271192.3A patent/CN107023000B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2464776Y (en) * | 2000-10-09 | 2001-12-12 | 贺德新 | Multi-section three-fork extruding-enlarging pile |
| CN200968002Y (en) * | 2006-11-15 | 2007-10-31 | 武汉武大巨成加固实业有限公司 | Multiple layer back taper type wedge-locking roofbolt |
| CN201908299U (en) * | 2010-12-30 | 2011-07-27 | 天津市银龙预应力钢材集团有限公司 | Concrete pipe pile with high bearing capacity |
| CN102720218A (en) * | 2012-06-29 | 2012-10-10 | 李国忠 | Deep-hole inverted-T-shaped pile based high-rise earthquake-resistant building structure |
| JP2015031019A (en) * | 2013-08-01 | 2015-02-16 | Ｊｆｅスチール株式会社 | Member for being driven into ground |
| CN205329680U (en) * | 2015-11-05 | 2016-06-22 | 山东科技大学 | Antitorque pile foundation structure of resistance to plucking |
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| Publication number | Publication date |
|---|---|
| CN107023000A (en) | 2017-08-08 |
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Effective date of registration: 20230515 Address after: 210019 Yunlong mountain road, Jianye District, Nanjing, Jiangsu 79 Patentee after: China Nuclear Industry Huaxing Construction Co.,Ltd. Patentee after: CNNC Huaxing Mechanized Engineering Co.,Ltd. Address before: 210019 Yunlong mountain road, Jianye District, Nanjing, Jiangsu 79 Patentee before: China Nuclear Industry Huaxing Construction Co.,Ltd. |