CN104863123A - Drilling bearing pile and forming method thereof - Google Patents
Drilling bearing pile and forming method thereof Download PDFInfo
- Publication number
- CN104863123A CN104863123A CN201510206707.2A CN201510206707A CN104863123A CN 104863123 A CN104863123 A CN 104863123A CN 201510206707 A CN201510206707 A CN 201510206707A CN 104863123 A CN104863123 A CN 104863123A
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- pile body
- pile
- bearing peg
- shape
- stake holes
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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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- 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
- E02D5/48—Piles varying in construction along their length, i.e. along the body between head and shoe, e.g. made of different materials along their length
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to the technical field of building, relates to a drilling bearing pile and a forming method thereof, and solves the problem of poor pulling resistance and poor pile shaft strength in the prior art. The drilling bearing pile includes a pile shaft, wherein the pile shaft is provided with at least one expanded part protruding out of the pile shaft in the radial direction of the pile shaft. The forming method includes digging a hole, grouting, placing a reinforcing cage and the like. The foundation of the pile provided by the invention is good in stability, and high pulling resistance and anti-bearing capacity are realized.
Description
Technical field
The invention belongs to technical field of buildings, relate to a kind of cement drilled pile, particularly relate to a kind of boring bearing peg 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, the boring bearing peg that a kind of pile strength is high, uplift resistance is high is provided.
Another object of the present invention is to provide a kind of manufacturing process of boring bearing peg of easy construction.
For achieving the above object, present invention employs following technical proposal: a kind of boring bearing peg, comprises pile body, described pile body has the expansion section that at least one radial direction along pile body gives prominence to pile body.
In above-mentioned boring bearing peg, described expansion section has several, and distance between every two expansion sections is equal or unequal.
In above-mentioned boring bearing peg, the edge of the cross section of described pile body has the angle in circular arc.
In above-mentioned boring bearing peg, 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.
In above-mentioned boring bearing peg, described pile body comprises at least one by three distributions triangular in shape and the elementary cell that forms of pile body bonded to each other, and when pile body comprises plural elementary cell, two often adjacent elementary cells share two identical pile bodies.
In above-mentioned boring bearing peg, any pile body in three pile bodies of composition elementary cell has lap with other two piles bodies respectively.
In above-mentioned boring bearing peg, in described pile body, be placed with reinforcing cage.
In above-mentioned boring bearing peg, the axial line of the pile body in pile body is not at grade.
In above-mentioned boring bearing peg, described pile body is quincunx, T-shaped, L shape or cross.
In above-mentioned boring bearing peg, the shape of cross section of described reinforcing cage and the cross sectional dimensions of reinforcing cage identical with the shape of cross section of pile body is less than the cross section of pile body.
To hole the manufacturing process of bearing peg, comprise the following steps:
A, borehole, borehole adopts multiple-drill press, many auger spindles form multiple cylindrical holes of polygonal distribution from ground toward underground drilling simultaneously, the drill bit that described auger spindle is installed is the adjustable reamer of the radius of gyration, wherein every 3 columniform holes are bonded to each other or be built up an elementary cell, every two neighboring unit cells share two identical holes, 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 boring bearing peg,
In step, squeeze into casing in advance in soil layer, casing submergence depth is through covering layer; 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.Manufacturing process easy construction of the present invention, can increase work efficiency.
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;
Fig. 8 is the structural representation of elementary cell;
Fig. 9 is the another kind of structural representation of elementary cell;
Figure 10 is the schematic diagram of elementary cell;
Figure 11 is the another kind of schematic diagram of elementary cell.
In figure: pile body 10, angle 11, expansion section 20, pile body protuberance 21, elementary cell 30, pile body 31, reinforcing cage 40.
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 boring bearing peg, comprise the pile body 10 in cylindricality, described pile body 10 has the expansion section 20 that at least one radial direction along pile body 10 gives prominence to pile body 10, the girth of obvious expansion section 20 is greater than the girth of pile body 10, is which kind of shape as expansion section 20, the present embodiment is not to limit, can be annular, truncated cone, bucking ladder etc.The effect of expansion section 20 is, can improve the contact area with soil layer, improves uplift resistance and bearing capacity.
Preferred version, as shown in Figure 2, expansion section 20 has several, and distance between every two expansion sections 20 is equal or unequal.
Pile body 10 can be cylindrical, also can be other shapes, and in the present embodiment, preferably, the edge of the cross section of pile body 10 has the angle 11 in circular arc.
More preferably, expansion section 20 is formed by connecting by the pile body protuberance 21 at several outstanding each angles 11, and the quantity of pile body protuberance 21 is identical with the quantity at angle 11.
Specifically, as shown in Fig. 3, Fig. 8 and Fig. 9, pile body 10 comprises at least one by three distributions triangular in shape and the elementary cell 30 that forms of pile body 31 bonded to each other, and when pile body 10 comprises plural elementary cell 30, often adjacent two elementary cells 30 share two identical pile bodies 31, the cross section of the pile body 31 of composition elementary cell 30 can identical also can not be identical.Any pile body 31 in three pile bodies 31 of composition elementary cell 30 has lap with other two piles bodies 31 respectively, that is, three pile bodies 31 in elementary cell 30 are overlapped between two, or be interpreted as bonded to each other between two, the dash area in Fig. 8 and Fig. 9 is the part that pile body 31 is overlapped or fit.The triangle that dotted line in Figure 10 and Figure 11 represents is the line at the center of the pile body 31 in an elementary cell 30, and every two adjacent elementary cell 30 reality are made up of 4 pile bodies 31 as seen.
As shown in Fig. 3-Fig. 7, it is to be appreciated that the axial line of pile body 31 in pile body 10 is not at grade, that is the center of pile body 31 is in plane distribution, thus improves the structural strength of pile body 10.In the present embodiment, the shape of pile body 10 is not to limit, and preferably, pile body 10 is in quincunx, T-shaped, L shape or cross.
When pile body 10 is T-shaped, L shape or cross time, pile body 10 has at least two campshed bodies 31 to form, every campshed body 31 can become double dislocation or arranges Heterogeneous Permutation more by arranged in parallel, the axial line of every campshed body 31 at grade, and composition pile body 10 some campshed bodies 31 axial line not at grade.
In above-mentioned scheme, in fact the quantity of pile body protuberance 21 be not more than the quantity of pile body 31, and reason is, when pile body 31 is positioned at the middle part of pile body 10, this pile body 31 is not or not the edge of pile body 10, and thus this pile body 31 can not form the pile body protuberance 21 protruding pile body.
In order to improve the intensity of pile body 10, be placed with reinforcing cage 40 in pile body 10, reinforcing cage 40 is made up of some longitudinal reinforcements paralleled with the axial line of pile body 10 and the steel hoop be fixedly connected with longitudinal reinforcement.The shape of reinforcing cage 40 can be cylindrical or square column type or other shapes, as preferably, the shape of cross section of reinforcing cage 40 and cross sectional dimensions of reinforcing cage 40 identical with the shape of cross section of pile body 10 is less than the cross section of pile body 10, thus make reinforcing cage 40 be positioned at pile body 10 inside and have the shape matched with pile body 10, booster action is served for the intensity improving pile body 10.
Present invention also offers a kind of manufacturing process of polygonal drilled pile, comprise the following steps:
A, borehole, 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; 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; 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;
C, in stake holes, put into reinforcing cage, continue to pour into cement paste or mortar, be drilled pile after coagulation forming, 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, expansion section 20, pile body protuberance 21, elementary cell 30, pile body 31, reinforcing cage 40 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 boring bearing peg, comprises pile body (10), it is characterized in that, described pile body (10) has the expansion section (20) that at least one radial direction along pile body (10) gives prominence to pile body (10).
2. boring bearing peg according to claim 1, is characterized in that, described expansion section (20) has several, and distance between every two expansion sections (20) is equal or unequal.
3. boring bearing peg according to claim 2, is characterized in that, the edge of the cross section of described pile body (10) has the angle (11) in circular arc.
4. boring bearing peg according to claim 3, it is characterized in that, described expansion section (20) is formed by connecting by the pile body protuberance (21) at several outstanding each angles (11), and the quantity of pile body protuberance (21) is identical with the quantity of angle (11).
5. the boring bearing peg according to claim 1 or 2 or 3 or 4, it is characterized in that, described pile body (10) comprises at least one by three distributions triangular in shape and the elementary cell (30) that forms of pile body bonded to each other (31), and when pile body (10) comprises plural elementary cell (30), two often adjacent elementary cells (30) share two identical pile bodies (31).
6. boring bearing peg according to claim 5, it is characterized in that, any pile body (31) in three pile bodies (31) of composition elementary cell (30) has lap with other two piles bodies (31) respectively.
7. the boring bearing peg according to claim 1 or 2 or 3 or 4, it is characterized in that, be placed with reinforcing cage (40) in described pile body (10), the shape of cross section of described reinforcing cage (40) and cross sectional dimensions of reinforcing cage (40) identical with the shape of cross section of pile body (10) is less than the cross section of pile body (10).
8. boring bearing peg according to claim 5, is characterized in that, the axial line of the pile body (31) in pile body (10) not at grade, described pile body (10) in quincunx, T-shaped, L shape or cross.
9. to hole the manufacturing process of bearing peg, it is characterized in that, comprise the following steps:
A, borehole, borehole adopts multiple-drill press, many auger spindles form multiple cylindrical holes of polygonal distribution from ground toward underground drilling simultaneously, the drill bit that described auger spindle is installed is the adjustable reamer of the radius of gyration, wherein every 3 columniform holes are bonded to each other or be built up an elementary cell, every two neighboring unit cells share two identical holes, 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 boring bearing peg according to claim 9, is characterized in that,
In step, squeeze into casing in advance in soil layer, casing submergence depth is through covering layer; 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 |
|---|---|---|---|
| CN201510206707.2A CN104863123B (en) | 2014-04-29 | 2015-04-27 | Drilling bearing pile and forming method thereof |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014101746546 | 2014-04-29 | ||
| CN2014101746550 | 2014-04-29 | ||
| CN201410174654.6A CN104088274A (en) | 2014-04-29 | 2014-04-29 | Quincunx drilling pile and forming method |
| CN201410174655.0A CN104032730A (en) | 2014-04-29 | 2014-04-29 | Triangular plum-blossom-shaped shaped drilling pile and forming method thereof |
| CN201510206707.2A CN104863123B (en) | 2014-04-29 | 2015-04-27 | Drilling bearing pile and forming method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104863123A true CN104863123A (en) | 2015-08-26 |
| CN104863123B CN104863123B (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510206707.2A Active CN104863123B (en) | 2014-04-29 | 2015-04-27 | Drilling bearing pile and forming method thereof |
| CN201520262483.2U Active CN204780867U (en) | 2014-04-29 | 2015-04-27 | Drilling bearing pile |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520262483.2U Active CN204780867U (en) | 2014-04-29 | 2015-04-27 | Drilling bearing pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255482A (en) * | 2020-01-16 | 2020-06-09 | 广东省建筑构件工程有限公司 | Underpinning structure on subway tunnel and construction method thereof |
Citations (4)
| 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 |
| KR20130038313A (en) * | 2013-02-25 | 2013-04-17 | 디엠이엔씨(주) | Phc pile |
| CN103362123A (en) * | 2013-07-05 | 2013-10-23 | 山东科技大学 | Reverse Y-shaped filling pile and construction method thereof |
-
2015
- 2015-04-27 CN CN201510206707.2A patent/CN104863123B/en active Active
- 2015-04-27 CN CN201520262483.2U patent/CN204780867U/en active Active
Patent Citations (4)
| 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 |
| KR20130038313A (en) * | 2013-02-25 | 2013-04-17 | 디엠이엔씨(주) | Phc pile |
| CN103362123A (en) * | 2013-07-05 | 2013-10-23 | 山东科技大学 | Reverse Y-shaped filling pile and construction method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255482A (en) * | 2020-01-16 | 2020-06-09 | 广东省建筑构件工程有限公司 | Underpinning structure on subway tunnel and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN204780867U (en) | 2015-11-18 |
| CN104863123B (en) | 2017-05-03 |
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