CN103485339B - Static pressure enlarged footing prestressing force high strength concrete pipe pile - Google Patents
Static pressure enlarged footing prestressing force high strength concrete pipe pile Download PDFInfo
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- CN103485339B CN103485339B CN201310479989.4A CN201310479989A CN103485339B CN 103485339 B CN103485339 B CN 103485339B CN 201310479989 A CN201310479989 A CN 201310479989A CN 103485339 B CN103485339 B CN 103485339B
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- steel plate
- phc piles
- pile
- ribbed stiffener
- strength concrete
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- 230000003068 static effect Effects 0.000 title claims abstract description 13
- 239000011372 high-strength concrete Substances 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 62
- 239000010959 steel Substances 0.000 claims abstract description 62
- 239000003351 stiffener Substances 0.000 claims description 21
- 238000010276 construction Methods 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000005493 welding type Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004062 sedimentation Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002689 soil Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 241000168254 Siro Species 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to the technical field of foundation engineering equipment, and relates to a static pressure expanded head prestressed high-strength concrete pipe pile, wherein a closed circular or open circular structure steel plate is welded at the pile end of the prestressed high-strength concrete pipe pile to form a closed or open expanded head; the diameter of the steel plate is larger than that of the prestressed high-strength concrete pipe pile; stiffening ribs are welded on the outer side of the pile end of the prestressed high-strength concrete pipe pile corresponding to the steel plate; the stiffening ribs are trapezoidal steel plates with the same thickness as the steel plates, and the geometric structures of the stiffening ribs do not exceed the outer edges of the steel plates; the device has the advantages of simple structure, convenient operation, high working efficiency, low cost, high bearing capacity, small sedimentation and environmental friendliness.
Description
Technical field:
The invention belongs to ground foundation engineering equipment technical field, relate to a kind of enlarged footing using static pressure construction and in advance should
Power strong concrete (PHC) pile tube, it is adaptable to upper soft lower hard earth formation, its supporting course buries shallower and bearing capacity relatively
Height, the earth formation of overlying soft layer.
Background technology:
Prestressed high strength concrete (PHC) pile tube bearing capacity is high, and speed of application is fast, and work efficiency is high, and the duration is short, and quality is steady
Fixed, be easy to do civilized construction, and safety in production, is the effective measures indirectly increased economic efficiency；Static pressure construction is to pass through piling
Counterweight in the deadweight of machine and pile frame makees stress by a kind of process for sinking in PHC pile tube press-in soil, in pile driving process, piling
Power can read intuitively, exactly and record, thus to pile bearing capacity control and judge that degree of accuracy is high；Pile quality and pile sinking
Length can be monitored by direct approach, and artificial disturbance factor is few, it is difficult to practise fraud, static pressure method single pile bearing force rate hammering method
Reliably, and static pressure construction is shockproof, noiselessness, is suitable for constructing, in work in urban district and other places conditional to noise
Journey circle is used widely.Therefore, seek the enlarged footing PHC pile tube of a kind of static pressure construction, make enlarged footing PHC pile tube at mechanics
On have club-footed pile and the advantage of common PHC pile tube concurrently, bearing capacity is high, and sedimentation and deformation is little, identical under conditions of can reduce stake long or
Stake footpath, largely reduces construction costs, and especially in " upper soft lower hard " stratum, stake end is supported in harder rock-soil layer, fills
The bearing capacity of stake end rock-soil layer has been waved in distribution, makes bearing capacity of pile tip be greatly improved, and has broad application prospects and good warp
Ji benefit.
Summary of the invention:
Present invention aim to overcome that the shortcoming that prior art exists, seeking design provides a kind of static pressure construction that uses
Enlarged footing PHC pile tube, utilizes the steel plate being welded in an end to form an enlarged footing, increases the effective Area of bearing of stake end, and at steel
Ribbed stiffener is set up in the junction of plate and stake end, improves the bearing strength of enlarged footing, thus improves bearing capacity of pile tip, becomes with stake end
Being supported for main, the end that pile side friction is auxiliary holds type friction pile, and (soft soil squeezed in advance after the PHC pile tube press-in 1m degree of depth exists
Drawing close to pile body under Gravitative Loads, pile side friction starts to play a role, but proportion is less, and about about 10%), improve
Bearing capacity, reduces sedimentation, can reduce a footpath or stake is long under the same terms, reduces construction costs.
To achieve these goals, the agent structure of the present invention includes prestressed high strength concrete (PHC) pile tube, steel plate
And ribbed stiffener；The stake end welding type of PHC piles is shaped with the steel plate shape of remain silent circle or open circles ring structure
Become to remain silent or enlarged open head, increase the effective Area of bearing of stake end；The diameter of steel plate is more than PHC piles
Diameter；Outside the stake end of PHC piles, at corresponding steel plate, welding is shaped with ribbed stiffener, is used for improving expansion
The bearing strength of head, thus improve the bearing capacity of pile tip of PHC piles；Ribbed stiffener is and steel plate thickness phase
Same trapezoidal steel plate, the geometry of ribbed stiffener is without departing from the outward flange of steel plate.
The concrete preparation process of the present invention is:
(1) diameter and the shape of steel plate, is first determined according to the characteristic load bearing capacity of PHC piles single pile
Formula；The diameter of steel plate is more than the diameter of PHC piles；The version of steel plate is circle or the opening of remaining silent
Circular ring structure；
(2), again by steel plate compact siro spinning technology by the way of welding of steel plate with PHC piles stake end
Form enlarged footing, it is ensured that the cross section centre of form of PHC piles overlaps with the cross-section centroid of steel plate together；
(3), then by the ribbed stiffener of trapezoidal steel plate structure respectively with steel plate and PHC piles stake end
The steel ring welding in outside, ribbed stiffener is evenly distributed on steel plate, and the quantity of ribbed stiffener is controlled by the local scour depth of steel plate；
(4), after the enlarged footing of PHC piles installs, execute according to static-pressure construction method
Work, static-pressure construction method is identical with the static pressure construction of common PHC piles pile tube.
The present invention compared with prior art, its simple in construction, easy to operate, work efficiency is high, low cost, and bearing capacity is high,
Settle little, environmental friendliness.
Accompanying drawing illustrates:
Fig. 1 is the enlarged footing PHC pile tube agent structure principle schematic of remaining silent that the present invention relates to.
Fig. 2 is the enlarged open head PHC pile tube agent structure principle schematic that the present invention relates to.
Fig. 3 is the enlarged footing PHC pile tube plan structure principle schematic that the present invention relates to.
Detailed description of the invention:
Below by embodiment and combine accompanying drawing and be described further.
Embodiment:
The agent structure of the present embodiment includes prestressed high strength concrete (PHC) pile tube 1, steel plate 2 and ribbed stiffener 3；In advance
The stake end welding type of stress high-strength concrete pipe pile 1 be shaped with remain silent circle or open circles ring structure steel plate 2 formed remain silent or
Enlarged open head, increases the effective Area of bearing of stake end；The diameter of steel plate 2 is more than the diameter of PHC piles 1；
Outside the stake end of PHC piles 1, at corresponding steel plate 2, welding is shaped with ribbed stiffener 3, for improving enlarged footing
Bearing strength, thus improve the bearing capacity of pile tip of PHC piles 1；Ribbed stiffener 3 is identical with steel plate 2 thickness
Trapezoidal steel plate, the geometry of ribbed stiffener 3 is without departing from the outward flange of steel plate 2.
The concrete preparation process of the present embodiment is:
(2), first according to the characteristic load bearing capacity of PHC piles 1 single pile determine steel plate 2 diameter and
Form；The diameter of steel plate 2 is more than the diameter of PHC piles 1；The version of steel plate 2 for remain silent circle or
Open circles ring structure；
(2), again the steel plate of 1 end of steel plate 2 and PHC piles is closely connected by the way of welding
Be connected together formation enlarged footing, it is ensured that the cross section centre of form of PHC piles 1 and the cross-section centroid weight of steel plate 2
Close；
(3), then by the ribbed stiffener 3 of trapezoidal steel plate structure respectively with steel plate 2 and PHC piles 1
Steel ring welding outside end, ribbed stiffener 3 is evenly distributed on steel plate 2, and the quantity of ribbed stiffener 3 is by the local scour depth of steel plate 2
Control；
(4), after the enlarged footing of PHC piles 1 installs, execute according to static-pressure construction method
Work, static-pressure construction method is identical with the static pressure construction of common PHC piles pile tube.
Claims (1)
1. a static pressure enlarged footing PHC piles, it is characterised in that agent structure includes prestressed high strength
Concrete tubular pile, steel plate and ribbed stiffener；The stake end welding type of PHC piles is shaped with remain silent circle or opening
The steel plate of circular ring structure is formed remains silent or enlarged open head, increases the effective Area of bearing of stake end；The diameter of steel plate is more than prestressing force
The diameter of high-strength concrete pipe pile；Weld to be shaped with at corresponding steel plate outside the stake end of PHC piles and put more energy into
Rib, for improving the bearing strength of enlarged footing, thus improves the bearing capacity of pile tip of PHC piles；Ribbed stiffener
For the trapezoidal steel plate identical with steel plate thickness, the geometry of ribbed stiffener is without departing from the outward flange of steel plate；Its concrete preparation technology
Process is:
(1) diameter and the form of steel plate, is first determined according to the characteristic load bearing capacity of PHC piles single pile；Steel
The diameter of plate is more than the diameter of PHC piles；The version of steel plate is circle or the opening annulus knot of remaining silent
Structure；
(2), again the steel plate of steel plate with PHC piles stake end is close-coupled at one by the way of welding
Rise and form enlarged footing, it is ensured that the cross section centre of form of PHC piles overlaps with the cross-section centroid of steel plate；
(3), then by the ribbed stiffener of trapezoidal steel plate structure respectively with steel plate and PHC piles stake end outside
Steel ring welding, ribbed stiffener is evenly distributed on steel plate, the quantity of ribbed stiffener by steel plate local scour depth control；
(4), after the enlarged footing of PHC piles installs, construct according to static-pressure construction method, quiet
Pressure construction method is identical with the static pressure construction of common PHC piles pile tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310479989.4A CN103485339B (en) | 2013-10-15 | 2013-10-15 | Static pressure enlarged footing prestressing force high strength concrete pipe pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310479989.4A CN103485339B (en) | 2013-10-15 | 2013-10-15 | Static pressure enlarged footing prestressing force high strength concrete pipe pile |
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| Publication Number | Publication Date |
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| CN103485339A CN103485339A (en) | 2014-01-01 |
| CN103485339B true CN103485339B (en) | 2017-01-11 |
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| CN201310479989.4A Active CN103485339B (en) | 2013-10-15 | 2013-10-15 | Static pressure enlarged footing prestressing force high strength concrete pipe pile |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108385676B (en) * | 2018-03-16 | 2020-09-18 | 河海大学 | Precast concrete triangular squeezing and expanding support disc pile and construction method thereof |
| CN108842837A (en) * | 2018-07-25 | 2018-11-20 | 青岛理工大学 | End-sealed cast pile with precast concrete enlarged footing |
| CN109537586B (en) * | 2018-12-31 | 2024-01-16 | 江苏兴厦建设工程集团有限公司 | Pile with large head |
| CN113062307A (en) * | 2021-03-26 | 2021-07-02 | 青岛地质工程勘察院(青岛地质勘查开发局) | Device for improving bearing capacity of single open prestressed high-strength concrete pipe pile |
| CN113062308A (en) * | 2021-03-26 | 2021-07-02 | 青岛地质工程勘察院(青岛地质勘查开发局) | Method for improving single pile bearing capacity of open prestress high-strength concrete pipe pile |
| CN116641398B (en) * | 2023-07-05 | 2023-10-10 | 江苏建院营造股份有限公司 | Construction method of free-angle high-bearing composite expanded pile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2218722A (en) * | 1988-05-19 | 1989-11-22 | Basil Green | Pile pressing |
| CN1441124A (en) * | 2003-04-18 | 2003-09-10 | 雷玉华 | High-pressure rotary spraying and core inserting process to form pedestal pile |
| CN101255694A (en) * | 2008-04-14 | 2008-09-03 | 河南国基建设集团有限公司 | High-strength prestressed concrete pipe pile construction method |
| KR20110000170A (en) * | 2009-06-26 | 2011-01-03 | 주식회사 스마텍엔지니어링 | Composit pile combined steel tubular pile and concrete pile reinforced with connecting structure |
| CN203475423U (en) * | 2013-10-15 | 2014-03-12 | 青岛理工大学 | Static pressure enlarged footing prestressing force high strength concrete pipe pile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475423A (en) * | 2013-09-06 | 2013-12-25 | 成都网动光电子技术股份有限公司 | Optical module transmission circuit transmitting HDTV signals |
-
2013
- 2013-10-15 CN CN201310479989.4A patent/CN103485339B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2218722A (en) * | 1988-05-19 | 1989-11-22 | Basil Green | Pile pressing |
| CN1441124A (en) * | 2003-04-18 | 2003-09-10 | 雷玉华 | High-pressure rotary spraying and core inserting process to form pedestal pile |
| CN101255694A (en) * | 2008-04-14 | 2008-09-03 | 河南国基建设集团有限公司 | High-strength prestressed concrete pipe pile construction method |
| KR20110000170A (en) * | 2009-06-26 | 2011-01-03 | 주식회사 스마텍엔지니어링 | Composit pile combined steel tubular pile and concrete pile reinforced with connecting structure |
| CN203475423U (en) * | 2013-10-15 | 2014-03-12 | 青岛理工大学 | Static pressure enlarged footing prestressing force high strength concrete pipe pile |
Non-Patent Citations (1)
| Title |
|---|
| 带翼板预应力管桩承载性能的研究;黄敏;《浙江大学博士后研究工作报告》;20051031;第6-8页第2.1和2.3小节，图2-1、2-4 * |
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| CN103485339A (en) | 2014-01-01 |
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