CN103276731B - Movable pile tip of static pressure gravel sand pile - Google Patents
Movable pile tip of static pressure gravel sand pile Download PDFInfo
- Publication number
- CN103276731B CN103276731B CN201310258110.3A CN201310258110A CN103276731B CN 103276731 B CN103276731 B CN 103276731B CN 201310258110 A CN201310258110 A CN 201310258110A CN 103276731 B CN103276731 B CN 103276731B
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- China
- Prior art keywords
- pile
- stake
- pile top
- movable
- bossing
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- Expired - Fee Related
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- 230000003068 static effect Effects 0.000 title claims abstract description 21
- 239000004576 sand Substances 0.000 title claims abstract description 9
- 239000002184 metal Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract 6
- 239000010959 steel Substances 0.000 abstract 6
- 238000010276 construction Methods 0.000 description 19
- 239000002689 soil Substances 0.000 description 5
- 239000000284 extract Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012407 engineering method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Landscapes
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a movable pile tip of a static pressure gravel sand pile to solve the problem that a steel pile and a pile cap cannot be simultaneously pulled out when the steel pile is pulled out. The movable pile tip comprises a pile tip portion and a pile cap portion, wherein the pile tip portion is arranged at the bottom of the steel pile, and the pile cap portion is matched with the pile tip portion. The steel pile is arranged on a hydraulic static pile press, the pile tip portion comprises two symmetric pile tip projections and two recesses, the pile cap portion comprises an axially semicircular portion and two pile cap projections, the outer diameter of each semicircular portion is consistent with that of the steel pile, two pile tip fixing rings are arranged on the pile tip projections, two pile cap fixing rings are arranged on the pile cap projections, and the pile tip fixing rings are connected with the pile cap fixing rings through connecting bands. The movable pile tip has the advantages that the use range of the hydraulic static pile press is widened, and large quantities of expenses are saved as the pile cap can be pulled out along with the steel pile.
Description
Technical field
The present invention relates to building machinery field, is a kind of static pressure movable pile tip specifically.
Background technology
In Construction of Civil Engineering process, what first will carry out is foundation construction.Pile foundation is base form the most common in building operations.Especially on the soil that marine reclamation land is formed, carry out building operations, because soil density is lower, basis is very soft, must carry out pile foundation construction.The kind of stake and construction method varied because upper building or load condition are different, generally comprise engineering pile, by whole prefabricated stake press-in ground, be applicable to ground and build highrise building etc., and broken stone pile and sand pile rubble or gravel are injected several meters, underground even twenty or thirty rice is dark to tens, be generally used for and build factory building, stockyard, highway, track foundation etc., for shallow foundation and bearing capacity of foundation soil can not be up to standard bearing stratum the method on compacting ground can be adopted to improve bearing capacity of foundation soil.Wherein, utilize hydraulic static pile pressing machine that engineering pile steadily, is undisturbedly pressed into soft foundation, be a kind of novel pile foundation construction method--static pressed pile engineering method, be widely used since the nineties in last century.Hydraulic static pile pressing machine is exactly the key construction equipment implementing static pressed pile engineering method.Compared with paddle type mill pile driver, have shockproof, noiseless, feature without environment pollutions such as greasy dirt splashings during this equipment construction, construction quality is good, cost of use is low, efficiency of construction high.Hydraulic static pile pressing machine primarily of pile frame, hang the part such as a crane, hydraulic pile-clamp apparatus, piling hydraulic cylinder and electric fixtures composition.Pile frame is complete machine supporting part, and main platform, guide table, column and lower running chassis are housed.Hang a crane and be loaded on column top, in place in order to hang piling bar.During operation, hydraulic pile-clamp apparatus clamping piling bar head, then push pile chuck by a pair piling hydraulic cylinder, piling bar is sunk.Existing hydraulic static pile pressing machine can only be used for the construction of engineering pile, generally cannot carry out the construction of gravel sand pile.Because when utilizing this equipment to carry out gravel sand pile construction, first piling bar is needed to be pressed into underground, in the process of piling bar press-in underground, piling bar inside is entered for preventing ground, need to arrange stake lid in the bottom of piling bar, and when rubble or gravel inject piling bar, after extracting piling bar, stake lid is difficult to together extract, and every pile is a handy stake lid just; Because stake lid generally adopts thicker ironcasting, cost is higher, therefore, adopts the method significant cost.
Summary of the invention
The object of this invention is to provide a kind of pile top structure utilizing hydraulic static pile pressing machine to carry out gravel sand pile construction, arrange movable pile tip in the bottom of piling bar, described movable pile tip comprises the pile top part be arranged on bottom piling bar and the stake cover coordinated with it; When piling bar press-in ground, described stake cover and pile top part snap-fit, when piling bar is extracted, the outer circular shape of described stake cover is consistent with piling bar outer circular shape, ensure that extracting smoothly of stake lid.
Concrete scheme is as follows:
A kind of static pressure broken stone pile or sand pile movable pile tip, described movable pile tip comprises the pile top part be arranged on bottom piling bar and the stake cover coordinated with it; Described piling bar is arranged on hydraulic static pile pressing machine; Described pile top part comprises two symmetrical pile top bossings and two sunk parts; It is semi-circular portion and two stake lid bossings that described stake lid comprises axial shape, and the external diameter R1 of described semi-circular portion is consistent with the external diameter of piling bar; The radius of described pile top bossing is consistent with the inner circle radius R2 of described semi-circular portion; The shape of described pile top sunk part and the form fit of described stake lid bossing are to ensure stake cover and pile top stapled section; Described pile top bossing arranges two pile top retainer rings, and described stake lid bossing also arranges two stake lid retainer rings, is connected between described pile top retainer ring with stake lid retainer ring with connecting band.
Can more successfully open stake lid during for ensureing that piling bar is extracted, described stake lid bossing also comprises straightway and curved section; When described curved section ensures that stake lid bossing and pile top sunk part fasten, described curved section is consistent with piling bar profile; When described straightway and pile top sunk part fasten, described straightway is in piling bar outer lug; Described curved section is arranged near stake lid retainer ring side, and described straightway is arranged on opposite side.
For reduce piling bar extract time, described pile top retainer ring and stake lid retainer ring with the resistance of rubble, the shape of described pile top retainer ring and stake lid retainer ring is streamlined.
For make pile top part and stake cover better identical, the root of described pile top bossing arranges chamfering.
For ease of operation, described stake cover setting operation ring.
Described connecting band is the one in chain, cable wire.
Described connecting band can also be metal tape, and there is through hole at the two ends of described metal tape, and described through hole and pile top retainer ring and stake lid retainer ring are coupling.
The caliber of piling bar and wall thickness can be determined according to construction requirement and embedded depth, and the thickness of stake lid can be determined according to soil property and condition of construction, but its thickness must be more than or equal to the wall thickness of piling bar.
Advantage of the present invention is: adopt hydraulic static pile pressing machine, widened the scope of application of hydraulic static pile pressing machine; Have shockproof, noiseless, feature without environment pollutions such as greasy dirt splashings during construction, construction quality is good, cost of use is low, efficiency of construction high.Because stake lid can be extracted with piling bar, save a large amount of expense.
Accompanying drawing explanation
Fig. 1 is piling bar schematic diagram;
Fig. 2 is Fig. 1 top view;
Fig. 3 is Fig. 1 left view;
Fig. 4 is stake cover top view;
Fig. 5 is the right view of Fig. 4;
Fig. 6 is the upward view of Fig. 4;
Fig. 7 is assembling schematic diagram;
Fig. 8 is the schematic shapes of pile top retainer ring.
Detailed description of the invention
Illustrate the present invention below in conjunction with accompanying drawing, as shown in Fig. 1-Fig. 7, the present invention includes the pile top part be arranged on bottom piling bar 1 and the stake cover 2 coordinated with it; Described piling bar 1 is arranged on hydraulic static pile pressing machine, and the exradius of piling bar 1 is R1; Described pile top part comprises symmetrical two pile top bossings 11 and two sunk parts (i.e. two protruding part 11 mid portions); It is semi-circular portion and two stake lid bossings 21 that described stake lid 2 comprises axial shape, and the external diameter of described semi-circular portion is consistent with the external diameter R1 of piling bar; The radius of described pile top bossing 11 is consistent with the inner circle radius R2 of described semi-circular portion; The shape of described pile top sunk part (i.e. two pile top protruding part centre positions) and the form fit of described stake lid bossing are to ensure stake cover 2 and pile top stapled section; Described pile top bossing 11 arranges two pile top retainer rings 3, and described stake lid bossing 21 also arranges two stake lid retainer rings 4, is connected between described pile top retainer ring 3 with stake lid retainer ring 4 with connecting band 6.
Can more successfully open stake lid during for ensureing that piling bar is extracted, described stake lid bossing 21 also comprises straightway 212 and curved section 211; When described curved section 211 ensures that stake lid bossing 21 and pile top sunk part fasten, this part is consistent with piling bar profile; When described straightway 212 fastens with pile top sunk part, this part is in piling bar outer lug; Described curved section 211 is arranged near stake lid retainer ring 3 side, and described straightway 212 is arranged on opposite side.Due to the projection of straightway 212 part, the contact area making this part and stake cheat side increases, therefore, the frictional force of this part also increases, define the moment of flexure forcing stake lid 2 to be opened, the moment of flexure acting in conjunction that the gravity of this moment of flexure and rubble produces, make stake lid 2 can smooth opening.
As shown in Figure 8, for reducing the resistance of described pile top retainer ring 3 and rubble when piling bar is extracted, top 31 shape of described pile top retainer ring 3 is streamlined, and in Fig. 8, parts 32 are fixing hole.Correspondingly, stake lid retainer ring 4 top shape is also arranged to streamlined.
For make pile top part and stake cover 2 better identical, the root of described pile top bossing 11 arranges chamfering 111.
For ease of operation, described stake cover 2 setting operation ring 5.
Described connecting band is the one in chain, cable wire.
Described connecting band can also be metal tape, and there is through hole at the two ends of described metal tape, and described through hole and pile top retainer ring and stake lid retainer ring are coupling.
Using method of the present invention is: utilize hydraulic static pile pressing machine to lift piling bar, and after utilizing operation ring to make a cover and pile top stapled section, pressure piling bar, enters after desired depth until piling bar, injects rubble or gravel, then extract piling bar from piling bar top.When piling bar is extracted, under the effect of gravity and straightway frictional force, stake lid overturns downwards, stake lid due to the exradius of stake cover consistent with piling bar exradius, decrease resistance when stake lid is extracted, stake is covered under the traction of connecting band, together extracts with piling bar.On the other hand, stake lid of the present invention is axially semicircle, reduces resistance when piling bar presses down, thus reduces energy consumption.The present invention's hydraulic static pile pressing machine used can adopt commercially available prod, as the product that Hunan New Timehope Construction Machinery Co., Ltd. produces.
Claims (7)
1. static pressure broken stone pile or a sand pile movable pile tip, is characterized in that: described movable pile tip comprises the pile top part be arranged on bottom piling bar and the stake cover coordinated with it; Described piling bar is arranged on hydraulic static pile pressing machine; Described pile top part comprises two symmetrical pile top bossings and two sunk parts; It is semi-circular portion and two stake lid bossings that described stake lid comprises axial shape, and the external diameter of described semi-circular portion is consistent with the external diameter of piling bar; The radius of described pile top bossing is consistent with the inner circle radius of described semi-circular portion; The shape of described pile top sunk part and the form fit of described stake lid bossing are to ensure stake cover and pile top stapled section; Described pile top bossing arranges two pile top retainer rings, and described stake lid bossing also arranges two stake lid retainer rings, is connected between described pile top retainer ring with stake lid retainer ring with connecting band.
2. movable pile tip according to claim 1, is characterized in that: described stake lid bossing also comprises straightway and curved section; When described curved section ensures that stake lid bossing and pile top sunk part fasten, described curved section is consistent with piling bar profile; When described straightway and pile top sunk part fasten, described straightway is in piling bar outer lug; Described curved section is arranged near stake lid retainer ring side, and described straightway is arranged on opposite side.
3. movable pile tip according to claim 1, is characterized in that: the shape of described pile top retainer ring and stake lid retainer ring is streamlined.
4. movable pile tip according to claim 1, is characterized in that: the root of described pile top bossing arranges chamfering.
5. movable pile tip according to claim 1, is characterized in that: described stake cover setting operation ring.
6. movable pile tip according to claim 1, is characterized in that: described connecting band is the one in chain, cable wire.
7. movable pile tip according to claim 1, is characterized in that: described connecting band is metal tape, and there is through hole at the two ends of described metal tape, and described through hole and pile top retainer ring and stake lid retainer ring are coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310258110.3A CN103276731B (en) | 2013-06-25 | 2013-06-25 | Movable pile tip of static pressure gravel sand pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310258110.3A CN103276731B (en) | 2013-06-25 | 2013-06-25 | Movable pile tip of static pressure gravel sand pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103276731A CN103276731A (en) | 2013-09-04 |
| CN103276731B true CN103276731B (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310258110.3A Expired - Fee Related CN103276731B (en) | 2013-06-25 | 2013-06-25 | Movable pile tip of static pressure gravel sand pile |
Country Status (1)
| Country | Link |
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| CN (1) | CN103276731B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970954B (en) * | 2016-07-08 | 2019-02-22 | 中国水利水电第十三工程局有限公司 | Compacted effect static pressure pile pipe and static pressure bore forming method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5748013A (en) * | 1980-09-08 | 1982-03-19 | Hitachi Zosen Corp | Sand drain device |
| JPS5873622A (en) * | 1981-10-26 | 1983-05-02 | Kubota Ltd | Construction of underground pile and file cylinder therefor |
| CN1629407A (en) * | 2004-10-19 | 2005-06-22 | 吴金钿 | Self-experiencing expansion pile shoe and immersed tube poured pile re-piling method |
| CN103132511A (en) * | 2011-11-29 | 2013-06-05 | 刘润郊 | Pile-forming method and pile-forming device for static pressure immersed tube expanded-base cast-in-place pile |
| CN203334280U (en) * | 2013-06-25 | 2013-12-11 | 白波 | Static press gravel pile and sand pile movable pile toe |
-
2013
- 2013-06-25 CN CN201310258110.3A patent/CN103276731B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5748013A (en) * | 1980-09-08 | 1982-03-19 | Hitachi Zosen Corp | Sand drain device |
| JPS5873622A (en) * | 1981-10-26 | 1983-05-02 | Kubota Ltd | Construction of underground pile and file cylinder therefor |
| CN1629407A (en) * | 2004-10-19 | 2005-06-22 | 吴金钿 | Self-experiencing expansion pile shoe and immersed tube poured pile re-piling method |
| CN103132511A (en) * | 2011-11-29 | 2013-06-05 | 刘润郊 | Pile-forming method and pile-forming device for static pressure immersed tube expanded-base cast-in-place pile |
| CN203334280U (en) * | 2013-06-25 | 2013-12-11 | 白波 | Static press gravel pile and sand pile movable pile toe |
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| Publication number | Publication date |
|---|---|
| CN103276731A (en) | 2013-09-04 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 |