CN1414186A - Sleeve pile and designing method - Google Patents
Sleeve pile and designing method Download PDFInfo
- Publication number
- CN1414186A CN1414186A CN 02121768 CN02121768A CN1414186A CN 1414186 A CN1414186 A CN 1414186A CN 02121768 CN02121768 CN 02121768 CN 02121768 A CN02121768 A CN 02121768A CN 1414186 A CN1414186 A CN 1414186A
- Authority
- CN
- China
- Prior art keywords
- pile
- core
- lag
- stake
- protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The present invention is a pile used in geotechnical engineering field, especially a sleeve pile. The sleeve pile is a pile body with combine structure formed by choosing finished product pile with high structure bearing ability (for example, prestressed pipe pile, steel pile etc.) as pile core and choosing low intension mixed cementing material (such as material made of powder coal ash and etc. industry flotsam) as sleeve. Position disks are fixed on two or more positions at the lower part and the upper part of the pile core, and are disposed with notch reserved in advance. The outer diameter of the position disk is smaller than that of the pile sleeve. The sleeve pile has bigger bearing force and low manufacturing cost compared with the pile made by existing hole forming technology.
Description
Technical field
The present invention is a kind of lag pile that is used for the geotechnical engineering field, the pile and the method for designing of special lag pile.
Background technology
The stake type that existing pile foundation technology is provided, though the pile-formation process difference, nothing more than the stake of in-site pouring concrete, prefabricated concrete stake, piling bar etc., they have following problem:
1, these types all are to carry out pile body design and calculate by homogeneous materials, for Piles for Friction Piles, and the unmatched problem of bearing capacity of foundation soil that structural bearing capacity and the soil body determined that has material of body of a pile usually and determined.Especially in weak soil for the bearing capacity of foundation soil that improves stake strengthens pile body, caused the waste of more than needed and material of the structural bearing capacity of stake.
2, existing grouting process adopts the gap between the cement paste fitted pile soil, can suitably improve the bearing capacity of stake, but can not increase the driven dimension of pile body effectively.
3, there is different pile defects in existing stake type.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can overcome above-mentioned shortcoming and custom-designed lag pile, this is a kind of novel combined material stake, be characterized in " outer weak interior strong ", be that pile body is formed by the material of two kinds of varying strengths is compound, its core is a high-strength material, pile protection is a low-intensity material, and both binding energy add the bearing capacity of foundation soil of timber pile, and reduces cost of manufacture.
The present invention realizes as follows:
Described lag pile is made up of stake core, pile protection, the stake core is the finished peg of making in advance, periphery at the stake core is enclosed with pile protection, the stake core is shorter than pile protection usually, also can be isometric with pile protection, can also be after planting stake, make a core longer by static pressure or vibration etc. than pile protection, stake core and pile protection are collectively referred to as pile body, on two or more positions on stake core bottom and top, can be set with positioning disk, the periphery of positioning disk is provided with the reservation breach, guarantee the circulation and the supply of pile protection slurry, the external diameter of positioning disk should be less than the external diameter of pile protection.
The stake core is the finished peg of making in advance, and as various concrete preformed piles (comprising RC, PC, PHC), concrete square pile, steel tube concrete pile, piling bar etc., the higher stake of intensity all is to select high-strength Prestressed Pipe Pile the best for use as the stake core; The section form of stake core can be solid or hollow rectangle, circle, I-shaped, Y-shaped, T type and other geometry, as shown in Figure 3; The stake wicking surface is provided with concavo-convex graining, and this helps the transmission of a core and pile protection adhesion stress; The difference that the structural bearing capacity of foundation stake requires, a stake core can constitute the compound pile core by many finished pegs, shown in Fig. 3 c.
But pile protection is with low-intensity, high flowability self-compaction, microdilatancy and the good epoxy glue gel material of adhesion strength, it is equipped with proper additive with industrial wastes such as flyash and makes, also available water mud or high flowability concrete, its intensity is preferably 3-15MPa, and optimal strength is 5～10Mpa; Described pile protection is unreinforced, because pile protection less demanding to materials is exoskeletal in addition, this just can remove the making and the installation of reinforcing cage from, so reduced cost significantly.
Positioning disk adopts concrete or steel construction piece to make; Vertical center is answered in the location of stake core in the stake hole, and makes pile protection wall thickness symmetry substantially; The outside dimension of positioning disk should be the outside dimension 50mm at least of pile body less than pore-forming.
Lag pile waters at the construction field (site) and makes, and the pile-formation process of lag pile is undertaken by three steps: pore-forming, the perfusion slurry, plant a core:
(1) pore-forming: the pore-forming mode can be auger boring, manually digging hole, it also can be high frequency or medium and low frequency vibration shaped steel pore-forming, preferably adopt long auger or dither pore-forming, be equipped with slip casing by pressure, pore-forming and slip casting are finished simultaneously, can use in various weak soils, unlikely collapse hole and the underground water of causing pours in, and reduces bearing capacity.
(2) perfusion slurry: the perfusion slurry can adopt pressure injection or not have pressure injection, can pour into slurry in pore-forming, also can pour into slurry behind the pore-forming.
(3) plant a core: the flawless method embedded pile of adopting process core, its implantation process are implanted after can adopting one piece implantation, segmentation to implant, pour into earlier slurry, elder generation implants and afterwards pours into slurry, can also implant and pour into slurry simultaneously.
The method for designing of lag pile is: the pile body structural bearing capacity calculates by stake core intensity; The pile body bearing capacity of foundation soil, i.e. end resistance and side resistance are calculated by combination pile body size; The sedimentation of lag pile pile foundation according to existing code requirement, is pressed the combination size of lag pile and is calculated.
Good effect of the present invention is:
(1) economy, low strong compound adopts the industrial waste preparation, and concrete can be saved cost 30-50% relatively.Usually the 30-50% of lag pile combined material is prefabricated concrete, and 55-70% is low strong compound, and the identical relatively castinplace pile of this stake type will be saved cost 10-25%, and preformed pile will be saved cost more than 60% relatively, and this is a kind of stake type of very economical.
(2) reliability is good.Owing to adopt the stake core to implant, on technology, do not cause the defective of a core, that is to say the pile body zero defect, this is that existing any technology is all unapproachable.
(3) value of environmental protection.The pile protection material can consume industrial waste in a large number, as: waste materials such as flyash, slag, slag, consumption will arrive 50-80%, and environment protection significance is very great.
Description of drawings
Fig. 1 is a structure chart of the present invention
Fig. 2 is an A-A view among Fig. 1
Fig. 3 is the stake core sectional view of different shape
Among the figure, 1 core, 2 positioning disks, 3 pile protections.
The specific embodiment
As shown in Figure 1, described lag pile is made up of stake core 1, pile protection 3, positioning disk 2, stake core 1 is the finished peg of making in advance, periphery at stake core 1 is enclosed with pile protection 3, stake core 1 is shorter than pile protection 3 usually, also can be isometric with pile protection 3, can also be after planting stake, make a core 1 longer than pile protection 3 by static pressure or vibration etc., stake core 1 is collectively referred to as pile body with pile protection 3, on two or more positions on stake core 1 bottom and top, be set with positioning disk 2, the periphery of positioning disk 2 is provided with the reservation breach, guarantees the circulation and the supply of pile protection slurry, and the external diameter of positioning disk 2 should be less than the external diameter of pile protection 3.Shown in Figure 2 is, and the cross section is circular stake core, the stake core of shapes such as shown in Figure 3 the is cross section is Y shape T shape H shape rectangle.
The method for designing of lag pile is: the pile body structural bearing capacity calculates by stake core intensity; The bearing capacity of foundation soil of lag pile, i.e. end resistance and side resistance are calculated by combination pile body size; The sedimentation of lag pile pile foundation according to existing code requirement, is pressed the combination size of lag pile and is calculated.
Describe below in conjunction with a specific embodiment:
Desire to build certain 19 layers of residential building, its pile body structural bearing capacity calculates by the intensity of stake core according to relevant concrete structure standard or norm of steel structure etc., selects φ 400 high-strength Prestressed Pipe Pile for use; The sedimentation of lag pile pile foundation according to existing code requirement, is pressed the combination size of lag pile and is calculated.Above-described calculating is the existing method for normalizing that calculates, and will not describe in detail at this.Below only elaborate with regard to the calculating of the bearing capacity of foundation soil of lag pile.The bearing capacity of foundation soil of described lag pile, equal suffered side resistance of pile body and end resistance sum, wherein, the side resistance is decided by underground each layer soil condition, end resistance is then decided by the soil condition of the soil layer that touches with the pile body bottom connection, and its geological conditions is as follows: soil layer classification mud clay opaque clay silty clay clay soil layer bed thickness m 1 2.7 1.4 9.2 2.1 1.5 1.5 i layer side resistance kN/m
245 36 60 75 50 78 ends resistance kN/m
22500
By last Biao Kede:
Total bed thickness=1+2.7+1.4+9.2+2.1+1.5+1.5=19.4 (m)
So get effective length H=18m, lag pile diameter D=0.6m, the stake core is selected φ 400 high-strength Prestressed Pipe Pile (PHC) for use.
According to following calculating, can obtain the pile body bearing capacity of foundation soil:
Pile body bearing capacity of foundation soil=total side resistance+total end resistance
=lateral area x ∑ (resistance of i layer thickness x i layer side)+floor space x holds resistance
By calculating, can draw:
The suffered total side resistance of lag pile is: 2017kN
The suffered total end resistance of lag pile is: 707kN
The lag pile bearing capacity of foundation soil is: 2724kN
The vertical bearing capacity design load of lag pile is: 1600kN
Claims (7)
1. lag pile, it is characterized in that: described lag pile is made up of stake core and pile protection, the stake core is the finished peg of making in advance, periphery at the stake core is enclosed with pile protection, stake core and pile protection are collectively referred to as pile body, on two or more positions on stake core bottom and top, can be set with positioning disk, the periphery of positioning disk is provided with the reservation breach, and the external diameter of positioning disk should be less than the external diameter of pile protection.
2. lag pile according to claim 1 is characterized in that: the stake core is shorter than pile protection usually, also can be isometric with pile protection, and can also after planting stake, make a core longer than pile protection by static pressure or vibration etc.
3. lag pile according to claim 1 is characterized in that: the finished peg of stake core for making in advance, as various concrete preformed piles (comprising RC, PC, PHC), steel pipe concrete stake, piling bar; The section form of stake core can be solid or hollow rectangle, circle, I-shaped, Y-shaped, T type and other geometry; The stake wicking surface can be level and smooth, also can be provided with concavo-convex graining; The stake core can constitute the compound pile core by single or many finished pegs.
4. lag pile according to claim 1, it is characterized in that: but pile protection is with the good no aggregate of low-intensity, high flowability self-compaction, microdilatancy and adhesion strength or aggregate epoxy glue gel material is arranged, it is equipped with proper additive with industrial wastes such as flyash and makes, also available water mud or high flowability concrete; Its intensity is preferably 3～15MPa, and optimal strength is 5～10Mpa; Described pile protection is unreinforced.Described pile protection thickness is preferably 50～1000mm, and optimum thickness is 100～300mm.
5. lag pile, it is characterized in that: lag pile waters at the construction field (site) and makes, the pile-formation process of lag pile is undertaken by three steps: pore-forming, the perfusion slurry, plant a core, the pore-forming mode can be auger boring, manually digging hole, high frequency or medium and low frequency vibration shaped steel pore-forming, the perfusion slurry can adopt pressure injection or not have pressure injection, can in pore-forming, pour into slurry, also can pour into slurry behind the pore-forming, plant core and adopt that an one piece is implanted, segmentation is implanted, implant behind the perfusion slurry earlier, implant earlier and afterwards pour into slurry, can also implant and pour into slurry simultaneously.
6. lag pile, it is characterized in that: the method for designing of lag pile is: the pile body structural bearing capacity calculates by stake core intensity; The bearing capacity of foundation soil of lag pile, i.e. end resistance and side resistance are calculated by combination pile body size; The sedimentation of lag pile pile foundation, according to existing code requirement, the combined effect of pressing lag pile calculates.
7. according to any one described lag pile of claim 1-6, it is characterized in that: the volume ratio of pile body and stake core is usually greater than 1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02121768 CN1238610C (en) | 2002-05-10 | 2002-05-10 | Sleeve pile and designing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02121768 CN1238610C (en) | 2002-05-10 | 2002-05-10 | Sleeve pile and designing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1414186A true CN1414186A (en) | 2003-04-30 |
| CN1238610C CN1238610C (en) | 2006-01-25 |
Family
ID=4745011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02121768 Expired - Fee Related CN1238610C (en) | 2002-05-10 | 2002-05-10 | Sleeve pile and designing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1238610C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493452A (en) * | 2011-11-30 | 2012-06-13 | 蔡嘉明 | Grouting pile-grafting construction method and equipment |
| CN102660945A (en) * | 2012-05-31 | 2012-09-12 | 福州市第三建筑工程公司 | Spiral steel strip and cement diameter-increasing pipe pile and construction method thereof |
| CN102733380A (en) * | 2012-06-17 | 2012-10-17 | 张永忠 | Lag pile and construction method thereof |
| CN102733376A (en) * | 2012-07-02 | 2012-10-17 | 朱建新 | Composite pile and construction method thereof |
| CN103397644A (en) * | 2013-07-30 | 2013-11-20 | 江苏翔森建设工程有限公司 | Combined special-shape steel plate stiffened-core cement foundation pit support structure and construction method thereof |
| CN103437346A (en) * | 2013-07-18 | 2013-12-11 | 杭州博数土木工程技术有限公司 | Steel pipe pile with burrs and construction method |
| CN103485333A (en) * | 2013-07-18 | 2014-01-01 | 杭州博数土木工程技术有限公司 | Corrugated hollow steel pipe friction pile and construction method thereof |
| CN103541353A (en) * | 2012-07-17 | 2014-01-29 | 德翰智慧科技有限公司 | Foundation pile |
| CN103590393A (en) * | 2013-11-21 | 2014-02-19 | 朱建新 | Construction method of composite pile |
| CN106480877A (en) * | 2015-08-28 | 2017-03-08 | 毕建东 | The pile making method of pipe sinking pressure grouting composite pile |
| CN112921958A (en) * | 2021-01-29 | 2021-06-08 | 徐州八方建筑工程有限公司 | High-pressure jet grouting hole-leading static pressure pile construction method |
| CN113454289A (en) * | 2019-02-21 | 2021-09-28 | C.H.A.B公司 | Sheath formed by at least one circular knitted fabric for building reinforced concrete piles |
-
2002
- 2002-05-10 CN CN 02121768 patent/CN1238610C/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493452A (en) * | 2011-11-30 | 2012-06-13 | 蔡嘉明 | Grouting pile-grafting construction method and equipment |
| CN102660945A (en) * | 2012-05-31 | 2012-09-12 | 福州市第三建筑工程公司 | Spiral steel strip and cement diameter-increasing pipe pile and construction method thereof |
| CN102660945B (en) * | 2012-05-31 | 2014-09-10 | 福州市第三建筑工程公司 | Spiral steel strip and cement diameter-increasing pipe pile and construction method thereof |
| CN102733380A (en) * | 2012-06-17 | 2012-10-17 | 张永忠 | Lag pile and construction method thereof |
| CN102733376A (en) * | 2012-07-02 | 2012-10-17 | 朱建新 | Composite pile and construction method thereof |
| CN102733376B (en) * | 2012-07-02 | 2019-09-17 | 朱建新 | Composite pile and its construction method |
| CN103541353A (en) * | 2012-07-17 | 2014-01-29 | 德翰智慧科技有限公司 | Foundation pile |
| CN103437346B (en) * | 2013-07-18 | 2016-01-20 | 浙江中隧桥波形钢腹板有限公司 | Steel pipe pile with the burr and construction method |
| CN103437346A (en) * | 2013-07-18 | 2013-12-11 | 杭州博数土木工程技术有限公司 | Steel pipe pile with burrs and construction method |
| CN103485333A (en) * | 2013-07-18 | 2014-01-01 | 杭州博数土木工程技术有限公司 | Corrugated hollow steel pipe friction pile and construction method thereof |
| CN103485333B (en) * | 2013-07-18 | 2016-02-24 | 浙江中隧桥波形钢腹板有限公司 | Waveform hollow steel pipe friction pile and construction method |
| CN103397644A (en) * | 2013-07-30 | 2013-11-20 | 江苏翔森建设工程有限公司 | Combined special-shape steel plate stiffened-core cement foundation pit support structure and construction method thereof |
| CN103397644B (en) * | 2013-07-30 | 2015-05-27 | 江苏翔森建设工程有限公司 | Combined special-shape steel plate stiffened-core cement foundation pit support structure and construction method thereof |
| CN103590393A (en) * | 2013-11-21 | 2014-02-19 | 朱建新 | Construction method of composite pile |
| CN106480877A (en) * | 2015-08-28 | 2017-03-08 | 毕建东 | The pile making method of pipe sinking pressure grouting composite pile |
| CN113454289A (en) * | 2019-02-21 | 2021-09-28 | C.H.A.B公司 | Sheath formed by at least one circular knitted fabric for building reinforced concrete piles |
| CN112921958A (en) * | 2021-01-29 | 2021-06-08 | 徐州八方建筑工程有限公司 | High-pressure jet grouting hole-leading static pressure pile construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1238610C (en) | 2006-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101343871B (en) | Composite pile with high permanent stability protection layer and its production and construction method | |
| CN1219945C (en) | High-pressure rotary spraying and core inserting process to form pedestal pile | |
| CN1414186A (en) | Sleeve pile and designing method | |
| CN1851154A (en) | Concrete long-core cement-soil composite pile building foundation treating method | |
| CN112323560B (en) | Roadbed construction settlement control system in complex soft foundation environment | |
| CN1718937A (en) | Technology of non soil taking hole guiding prestressed pipe pile or premade square sunk pile | |
| CN1131912C (en) | Variable supporting-plate club-footed embedded pile and its forming method | |
| CN1743561A (en) | Column-hammer forced tamping substitution method | |
| CN212335976U (en) | Construction waste regeneration drainage CFG pile foundation | |
| CN105002895A (en) | Multiple-drill-rod cement-soil mixing pile inserting prefabricated profiles | |
| CN107700521A (en) | One kind is built（Structure）Build thing foundation stabilization and underpin pier and its construction method | |
| CN106958176A (en) | Quick prefabricated pin-connected panel soft base processing method | |
| CN1421575A (en) | Light filled structure and its construction process | |
| CN2646215Y (en) | Fixed bottom tubular pile possessing high pressure rotary churning pile foundation | |
| CN2553008Y (en) | Combined pile | |
| CN1066511C (en) | After-grouting pile composite foundation and construction method thereof | |
| CN213233417U (en) | Combined pile and combined foundation | |
| CN104746512A (en) | Reinforced cement soil composite pile and method for forming the pile | |
| CN211816368U (en) | Ecological environment-friendly foundation structure for reinforcing soft foundation | |
| CN106939596A (en) | A kind of cast-in-place slub type slurry drilled pile | |
| CN1152990C (en) | Cast-in-situ pedestal pile with variable bearing and its construction method | |
| CN1036149C (en) | Method for manufacturing expanding concrete pile | |
| CN2608557Y (en) | High pressure rotary spraying core inserting bottom expanding pile | |
| CN1167854C (en) | Method for building compound pile | |
| CN205368919U (en) | Highway soft soil foundation treatment pile extension structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060125 Termination date: 20120510 |