CN104863127A - Polygonal boring pile and formation method thereof - Google Patents
Polygonal boring pile and formation method thereof Download PDFInfo
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- CN104863127A CN104863127A CN201510205643.4A CN201510205643A CN104863127A CN 104863127 A CN104863127 A CN 104863127A CN 201510205643 A CN201510205643 A CN 201510205643A CN 104863127 A CN104863127 A CN 104863127A
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Abstract
The invention belongs to the technical field of building, relates to a polygonal boring pile and a formation method thereof, and solves the technical problems in the prior art that the construction is inconvenient, the pulling resistance is poor and the pile body strength is poor. The polygonal boring pile comprises a pile shaft, wherein the cross section of the pile shaft comprises more than three arc-shaped angles; the pile shaft is formed by mutual superimposition of multiple pile bodies; the number of the pile bodies is not smaller than that of the angles; the axial leads of the multiple pile bodies are not on the same plane; the formation method comprises the steps of hole digging, grouting, forming and the like. According to the invention, the pile foundation stability is excellent, and the pulling resistance and the bearing capacity resistance are high.
Description
Technical field
The invention belongs to technical field of buildings, relate to a kind of cement drilled pile and manufacturing process thereof, particularly relate to a kind of polygonal drilled pile and manufacturing process thereof.
Background technology
Drilled pile adopts underwater concrete pile, is to adopt mechanical hole building.Existing drilled pile adopts drill hole of drilling machine, grout injection in boring procedure, and up and down reciprocatingly for several times after boring cement paste is filled, form muddy water mixed column, after curing molding, be drilled pile.But existing drilled pile is all single-column stake, when the higher uplift resistance of needs and compressive resistance, need the aperture of boring to do large thus make the boring post of larger aperture.
Chinese patent literature discloses a kind of one-tenth pile operation method [notification number: CN1632233A] of bidirectional stirring pile, comprises the following steps: a, leveling place; B, bidirectional stirring pile machine are located: crane suspention mixer is to referring to fixed pile and centering; C, stirring are sunk, and start bidirectional stirring pile machine, make bidirectional stirring pile driver drilling rod native along leading truck to incision, open and send stock pump, to soil body water-spray type slurry, and the blade of the forward and reverse rotation of difference Stirring cement-soil simultaneously on bidirectional stirring pile driver drilling rod; D, bidirectional stirring pile driver drilling rod continues to sink and stirring concrete earth, until projected depth; E, stirs while promoting, and the blade of forward and reverse rotation on bidirectional stirring pile driver drilling rod continues stirring concrete earth; F, promotes, is stirred to earth's surface or the above 50cm of design elevation, complete the construction of two-way stirring concrete drill hole stake.Its weak point: one be shaping stake is still single-column cement earth pile, the single-column cement earth pile being in soft foundation because pile foundation area is little, stake surrounding soil property is rare softly, vertical is not enough to support single-column cement earth pile by support force and keeps vertically, thus very easily causing shaping single-column cement earth pile run-off the straight and scrapping; Two is because cement paste in single-column cement earth pile and native stirring are for stir in the same way, mixing between cement paste with soil cannot be made cannot to reach even, shaping single-column strength of the cement-soil piles thus certainly will be caused low.
Summary of the invention
The object of the invention is for the problems referred to above, provide that a kind of pile strength is high, uplift resistance much higher angle drilled pile.
Another object of the present invention is to provide a kind of manufacturing process of polygonal drilled pile of easy construction.
For achieving the above object, present invention employs following technical proposal: a kind of polygonal drilled pile, comprise pile body, the cross section of described pile body has more than 3 angles in circular arc, described pile body is superimposed with each other by several pile bodies and forms, the quantity of described pile body is not less than the quantity at angle, and the axial line of several described pile bodies is not at grade.
In above-mentioned polygonal drilled pile, the cross section of each independently pile body is circular, and each pile body of composition pile body has lap with at least two other pile body respectively.
In above-mentioned polygonal drilled pile, be placed with reinforcing cage in described pile body, described pile body is formed by stacking by least two campshed bodies.
In above-mentioned polygonal drilled pile, the axial line of described every campshed body at grade.
In above-mentioned polygonal drilled pile, the T-shaped or L shape of described pile body or cross.
In above-mentioned polygonal drilled pile, described pile body has the expansion section of at least one outstanding pile body.
In above-mentioned polygonal drilled pile, described expansion section has several, and distance between every two expansion sections is equal or unequal.
In above-mentioned polygonal drilled pile, described expansion section is formed by connecting by the pile body protuberance at several outstanding each angles, and the quantity of pile body protuberance is identical with the quantity at angle.
A manufacturing process for polygonal drilled pile, comprises the following steps:
A, borehole, dig out the cylindrical hole of more than 3 distributions in polygonal in the earth formation, and cylindrical hole formation stake holes bonded to each other;
B, grouting, pour into for shaping cement paste or mortar in stake holes, and make the top of cement paste or mortar and stake holes have space;
C, in stake holes, put into reinforcing cage, continue to pour into cement paste or mortar, after coagulation forming, be drilled pile.
In the manufacturing process of above-mentioned polygonal drilled pile,
In step, casing is squeezed in advance in soil layer, casing submergence depth is through covering layer, borehole adopts multiple-drill press, by many auger spindles of rig by polygonal arrangement, many auger spindles form multiple cylindrical holes of polygonal distribution from ground toward underground drilling simultaneously, and the drill bit that described auger spindle is installed is the adjustable reaming bit of the radius of gyration; In stepb, the height pouring into cement paste or mortar is the 1/3-2/3 of the stake holes degree of depth, and in filling process, casing rises along with the height of cement paste or mortar and progressively upwards promotes; In step C, the shape of reinforcing cage but size identical with the shape of stake holes is less than the size of stake holes.
Compared with prior art, the invention has the advantages that: because the loaded area of pile foundation is large, bearing support point is plane distribution, the thus good stability of pile foundation, ensure that cement earth pile does not tilt in soft foundation simultaneously, stands vertically; Have employed the pile body of many non-linear configuration, serve the effect of the contact area increasing pile body and ground, improve uplift resistance and anti-bearing capacity; Expansion section is suitable in the good soil layer of soil property, improves uplift resistance and anti-bearing capacity further.Easy construction of the present invention, can provide efficiency of construction, save material simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation provided by the invention;
Fig. 2 is another kind of structural representation provided by the invention;
Fig. 3 is the cross sectional representation of pile body provided by the invention;
Fig. 4 is the cross sectional representation of pile body provided by the invention;
Fig. 5 is the another kind of cross sectional representation of pile body provided by the invention;
Fig. 6 is the another kind of cross sectional representation of pile body provided by the invention;
Fig. 7 is the another kind of cross sectional representation of pile body provided by the invention.
In figure: pile body 10, angle 11, pile body 20, reinforcing cage 30, longitudinal reinforcement 31, steel hoop 32, expansion section 40, pile body protuberance 41.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As shown in Figure 1, a kind of polygonal drilled pile, comprises pile body 10, pile body 10 is concrete stake or concrete pile, the cross section of described pile body 10 has more than 3 angles 11 in circular arc, and that is, pile body 10 non-cylindrical but external surface have the circular arc angle 11 of more than 3.
Pile body 10 is superimposed with each other by several pile bodies 20 and forms, the quantity of described pile body 20 is not less than the quantity at angle 11, that is, also pile body 20 can be had in pile body 10 inside, but the pile body 20 of pile body 10 inside can not show the angle 11 of arc in pile body 10 outside, and the axial line of several described pile bodies 20 is not at grade.Can so understand, when being interconnected by the axial line of pile body 20, be not form straight line but can form a closed annular yet.
The cross section of each independently pile body 20 is circular, and the cross section of each pile body 20 can identical also can not be identical, each pile body 20 of composition pile body 10 has lap with at least two other pile body 20 respectively, when pile body 11 is overlapping with pile body 11, be equivalent to two pile bodies 11 and enter into mutually other pile body 11, formed and mutually intersect, improve structural strength.
Reinforcing cage 30 is placed with in pile body 10, the shape of reinforcing cage 30 is identical with the shape of pile body 10, but the size of reinforcing cage 30 must be less than pile body 10, is equivalent to the inside, edge of pile body 10 is provided with reinforcing cage 30, thus improve the intensity of pile body 10 entirety, as resistance to bending.In the present embodiment, reinforcing cage 30 can form cage construction with some longitudinal reinforcements 31 and the steel hoop 32 be fixedly connected with longitudinal reinforcement 31, and some longitudinal reinforcements 31 are vertically parallel to each other in pile body 10.
In the present embodiment, pile body 10 can be various different shapes, straight line cylindricality as shown in Figure 3, quincunx, L shape as shown in Figure 5 as shown in Figure 4, T-shaped as shown in Figure 6, cross as shown in Figure 7 etc., but no matter be which kind of shape, must there be angle 11 at the edge of pile body 10, and must there be the external surface of arc at angle 11, and preferably, when pile body 10 is T-shaped L shape or cross time, pile body 10 is formed by stacking by least two campshed bodies 20, and the axial line of every campshed body 20 is at grade.
When the present invention is straight line cylindricality as shown in Figure 3, pile body 20 can first radially overlapped discharge one campshed body 20, and every campshed body 20 can become double dislocation or arrange Heterogeneous Permutation more by arranged in parallel.
As shown in Figure 2, pile body 10 has the expansion section 40 of at least one outstanding pile body 10, expansion section 40 is protruded outward along the radial direction of pile body 10 thus is formed the shape that girth is greater than pile body 10, be which kind of shape as expansion section 40, the present embodiment is not to limit, can be annular, truncated cone, bucking ladder etc.Expansion section 40 has several and axis along pile body 10 is arranged, and distance between every two expansion sections 40 is equal or unequal.Preferably, expansion section 40 is at least 3 and distance between two often adjacent expansion sections 40 is identical, and expansion section 40 is formed by connecting by the pile body protuberance 41 at several outstanding each angles 11, and the quantity of pile body protuberance 41 is identical with the quantity at angle 11.The external surface of pile body protuberance 41 is circular arc, and specifically, pile body protuberance 41 is outstanding along pile body 20 radial direction, and the line of ledge is circular arc.The effect of expansion section 40 is to improve the contact area with soil layer, thus improves uplift resistance and the bearing capacity of pile body 10.
Present invention also offers a kind of manufacturing process of polygonal drilled pile, comprise the following steps:
A, borehole, dig out the cylindrical hole of more than 3 distributions in polygonal in the earth formation, and cylindrical hole formation stake holes bonded to each other;
B, grouting, pour into for shaping cement paste or mortar in stake holes, and make the top of cement paste or mortar and stake holes have space;
C, in stake holes, put into reinforcing cage, continue to pour into cement paste or mortar, after coagulation forming, be drilled pile.
Preferred version, in step, casing is squeezed in advance in soil layer, casing submergence depth is through covering layer, borehole adopts multiple-drill press, by many auger spindles of rig by polygonal arrangement, many auger spindles form multiple cylindrical holes of polygonal distribution from ground toward underground drilling simultaneously, and the drill bit that described auger spindle is installed is the adjustable reaming bit of the radius of gyration; In stepb, the height pouring into cement paste or mortar is the 1/3-2/3 of the stake holes degree of depth, and in filling process, casing rises along with the height of cement paste or mortar and progressively upwards promotes; In step C, the shape of reinforcing cage but size identical with the shape of stake holes is less than the size of stake holes.
Specifically; in borehole step; the casing conformed to drilled pile profile is first squeezed into severely-weathered layer as guide pile by survey crew; the size of this casing should be more than or equal to the size of drilled pile; the key of boring success or failure prevents hole wall collapse; when holing darker; hole wall soil below groundwater table can cave in, even quicksand phenomenon occur under hydrostatic pressure in hole; casing plays the effect preventing hole wall collapse, isolates the effects such as surface water, protection ground, aperture, spud pile hole site and drill bit guiding in addition simultaneously.The material making casing has wood, steel, steel concrete three kinds.Casing requires sturdy and durable, water-tight, and its internal diameter should be larger than bore diameter.
Boring adopts normal circulation slewing drilling machine to enter construction technology, suitably earth is thrown less at clay layer, pulping is voluntarily crept into by auger spindle, concentration of hydraulic mixture Gu Bi is then strengthened at sandy soils, three auger spindle rate of penetrations adapt with mud discharge rate all the time, when meeting scall, suitably increase specific gravity of mud and denseness, alleviate as far as possible and rush the impact of liquid on hole wall, reduction rotating speed and the pressure of the drill are to meet quality control on construction requirement simultaneously.
Reinforcing cage needs prefabricated in advance, in borehole process, as run into the good geological stratification of soil property, reaming bit should expand the radius of gyration thus form the hollow part protruding pile body, when making grouting, cement paste can be circulated in hollow part and form expansion section 30, improves uplift resistance and the bearing capacity of pile body 10.Easy construction simultaneously, substantially increases the speed of stake processed.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ the terms such as pile body 10, angle 11, pile body 20, reinforcing cage 30, expansion section 40, pile body protuberance 41 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (10)
1. a polygonal drilled pile, comprise pile body (10), it is characterized in that, the cross section of described pile body (10) has more than 3 angles (11) in circular arc, described pile body (10) is superimposed with each other by several pile bodies (20) and forms, the quantity of described pile body (20) is not less than the quantity of angle (11), and the axial line of described several pile bodies (20) is not at grade.
2. polygonal drilled pile according to claim 1, it is characterized in that, the cross section of each independently pile body (20) is circular, and each pile body (20) of composition pile body (10) has lap with at least two other pile body (20) respectively.
3. polygonal drilled pile according to claim 1 and 2, is characterized in that, is placed with reinforcing cage (30) in described pile body (10), and described pile body (10) is formed by stacking by least two campshed bodies (20).
4. polygonal drilled pile according to claim 3, is characterized in that, the axial line of described every campshed body (20) at grade.
5. polygonal drilled pile according to claim 1 and 2, is characterized in that, the T-shaped or L shape of described pile body (10) or cross.
6. polygonal drilled pile according to claim 1 and 2, is characterized in that, described pile body (10) has the expansion section (40) of at least one outstanding pile body (10).
7. polygonal drilled pile according to claim 6, is characterized in that, described expansion section (40) has several, and distance between every two expansion sections (40) is equal or unequal.
8. polygonal drilled pile according to claim 6, it is characterized in that, described expansion section (40) is formed by connecting by the pile body protuberance (41) at several outstanding each angles (11), and the quantity of pile body protuberance (41) is identical with the quantity of angle (11).
9. a manufacturing process for polygonal drilled pile, is characterized in that, comprises the following steps:
A, borehole, dig out the cylindrical hole of more than 3 distributions in polygonal in the earth formation, and cylindrical hole formation stake holes bonded to each other;
B, grouting, pour into for shaping cement paste or mortar in stake holes, and make the top of cement paste or mortar and stake holes have space;
C, in stake holes, put into reinforcing cage, continue to pour into cement paste or mortar, after coagulation forming, be drilled pile.
10. the manufacturing process of polygonal drilled pile according to claim 9, is characterized in that,
In step, casing is squeezed in advance in soil layer, casing submergence depth is through covering layer, borehole adopts multiple-drill press, by many auger spindles of rig by polygonal arrangement, many auger spindles form multiple cylindrical holes of polygonal distribution from ground toward underground drilling simultaneously, and the drill bit that described auger spindle is installed is the adjustable reaming bit of the radius of gyration; In stepb, the height pouring into cement paste or mortar is the 1/3-2/3 of the stake holes degree of depth, and in filling process, casing rises along with the height of cement paste or mortar and progressively upwards promotes; In step C, the shape of reinforcing cage but size identical with the shape of stake holes is less than the size of stake holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510205643.4A CN104863127A (en) | 2014-04-29 | 2015-04-27 | Polygonal boring pile and formation method thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014101746546 | 2014-04-29 | ||
| CN201410174654.6A CN104088274A (en) | 2014-04-29 | 2014-04-29 | Quincunx drilling pile and forming method |
| CN201510205643.4A CN104863127A (en) | 2014-04-29 | 2015-04-27 | Polygonal boring pile and formation method thereof |
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| CN104863127A true CN104863127A (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410174654.6A Pending CN104088274A (en) | 2014-04-29 | 2014-04-29 | Quincunx drilling pile and forming method |
| CN201520265117.2U Active CN204662423U (en) | 2014-04-29 | 2015-04-27 | Polygonal drilled pile |
| CN201510205643.4A Pending CN104863127A (en) | 2014-04-29 | 2015-04-27 | Polygonal boring pile and formation method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410174654.6A Pending CN104088274A (en) | 2014-04-29 | 2014-04-29 | Quincunx drilling pile and forming method |
| CN201520265117.2U Active CN204662423U (en) | 2014-04-29 | 2015-04-27 | Polygonal drilled pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104088274A (en) * | 2014-04-29 | 2014-10-08 | 周兆弟 | Quincunx drilling pile and forming method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126264A (en) * | 1994-12-26 | 1996-07-10 | 石寅生 | Making method for non-annular borehole cast-in-place pile |
| CN1208102A (en) * | 1998-07-31 | 1999-02-17 | 叶长生 | Deposited pile and its construction |
| CN2312967Y (en) * | 1997-09-29 | 1999-04-07 | 靳宏湘 | Broaching-pile drilling machine |
| JP2004270440A (en) * | 2003-02-17 | 2004-09-30 | Mitani Sekisan Co Ltd | Construction method for foundation pile, and prefabricated pile |
| CN1632233A (en) * | 2004-12-23 | 2005-06-29 | 东南大学 | Pile forming operation method for bi-directional stirring piles |
| CN101608448A (en) * | 2009-07-28 | 2009-12-23 | 武汉高铁桩工科技有限公司 | Cement paste spraying multi-directional core entraining agitation pile piling method |
| CN204662423U (en) * | 2014-04-29 | 2015-09-23 | 周兆弟 | Polygonal drilled pile |
-
2014
- 2014-04-29 CN CN201410174654.6A patent/CN104088274A/en active Pending
-
2015
- 2015-04-27 CN CN201520265117.2U patent/CN204662423U/en active Active
- 2015-04-27 CN CN201510205643.4A patent/CN104863127A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126264A (en) * | 1994-12-26 | 1996-07-10 | 石寅生 | Making method for non-annular borehole cast-in-place pile |
| CN2312967Y (en) * | 1997-09-29 | 1999-04-07 | 靳宏湘 | Broaching-pile drilling machine |
| CN1208102A (en) * | 1998-07-31 | 1999-02-17 | 叶长生 | Deposited pile and its construction |
| JP2004270440A (en) * | 2003-02-17 | 2004-09-30 | Mitani Sekisan Co Ltd | Construction method for foundation pile, and prefabricated pile |
| CN1632233A (en) * | 2004-12-23 | 2005-06-29 | 东南大学 | Pile forming operation method for bi-directional stirring piles |
| CN101608448A (en) * | 2009-07-28 | 2009-12-23 | 武汉高铁桩工科技有限公司 | Cement paste spraying multi-directional core entraining agitation pile piling method |
| CN204662423U (en) * | 2014-04-29 | 2015-09-23 | 周兆弟 | Polygonal drilled pile |
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| Publication number | Publication date |
|---|---|
| CN104088274A (en) | 2014-10-08 |
| CN204662423U (en) | 2015-09-23 |
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Application publication date: 20150826 |
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