CN104878747A - Cement-soil stirring and bearing pile and formation method thereof - Google Patents
Cement-soil stirring and bearing pile and formation method thereof Download PDFInfo
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- CN104878747A CN104878747A CN201510209278.4A CN201510209278A CN104878747A CN 104878747 A CN104878747 A CN 104878747A CN 201510209278 A CN201510209278 A CN 201510209278A CN 104878747 A CN104878747 A CN 104878747A
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- bearing peg
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Abstract
The invention belongs to the technical field of building, particularly relates to a cement-soil stirring and bearing pile and a formation method thereof and solves the technical problems of poor pulling resistance and poor pile body strength. The cement-soil stirring and bearing pile comprises a pile body made of cement and soil by solidification, the pile body is provided with at least one expansion portion protruding out of the pile body along the radial direction. The formation method includes arranging a plurality of drill pipes and whitewashing pipes according to that the axes are not on the same plane, wherein each drill pipe is provided with a drill bit at the end, the drill bits are boring drill bits with adjustable rotation radius, during drilling of the drill bits, rotation radius of the drill bits can be at least expanded at one time and rotation radius of the drill bits is larger than that of stirring blades. The pile foundation is good in stability, high in strength and high in pulling resistance and anti-bearing force.
Description
Technical field
The invention belongs to technical field of buildings, relate to a kind of cement mixing method, particularly relate to a kind of Soil-cement bearing peg and manufacturing process thereof.
Background technology
Cement mixing method is a kind of method for reinforcing the low ground of saturated soft clay, it utilizes cement as curing compound, by special Mixing Machine, in ground depths by weak soil and curing compound action of forced stirring, utilize the series of physical chemical reaction produced between curing compound and weak soil, weak soil is hardened into have the high-quality ground of globality, water stability and some strength.But existing cement mixing method 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.
The manufacturing process of existing cement mixing method comprises the following steps:
1, position of p ile machine, centering, leveling.After putting agitation pile stake position well, mobile mixing pile machine arrives and refers to fixed pile, centering, leveling level gauge leveling.
2, leading truck verticality is adjusted.Adopt transit or ceiling hammer double-direction control leading truck verticality.By design and code requirement, verticality be less than 1.0% long.
3, mixing slurries in advance.Deep mixer stirs simultaneously in advance, and slurries are put into aggregate bin before treating mud jacking by backstage mixing cement grout.Select cement grade 425# common silicate cement mixing slurries, water/binder ratio controls in 0.45 ~ 0.50 scope, is no less than 50Kg according to designing requirement every meter deep-mixed pile cement consumption.
4, stir.Start deep-mixing pile driver rotating disk, after head rotating speed to be mixed is normal, drilling rod can be made to stir along sinking limit, leading truck limit, and subsidence velocity regulates and controls by gear, and operating current should not be greater than rated value.
5, whitewashing is stirred and is promoted.After sinking to arriving projected depth, open mortar pump, send slurry to stirring-head grout outlet by pipeline, after pulp, start mixing pile machine and tensioning chain device, stir limit lifting drilling rod by designing the hoisting velocity 0.50 ~ 0.8m/min limit whitewashing determined, slurries and the soil body are are fully mixed and stirred.
6, repeat to stir.Stirring drill bit is promoted to after stake pushes up above 500mm height, and close mortar pump, repeat stirring and sink down into projected depth, subsidence velocity is undertaken by designing requirement.
7, whitewashing repeats to stir and promotes.After sinking to arriving projected depth, whitewashing repeats to stir and promotes, and is promoted to ground always.
8, stake machine displacement.Constructed after a pile, mobile stake machine, to next pile position, repeats the construction that above step carries out next pile.
As can be seen here, the construction method of existing cement mixing method is single making, and every pile is all cylindrical.
Deficiency is sent out in order to overcome prior art, people are through constantly exploring, propose various solution, as Chinese patent literature discloses a kind of one-tenth pile operation method [notification number: CN102943467A] of bidirectional stirring pile, cement mixing method is stirred by soil and cement paste and is formed, one width stirs wall and is made up of the cement mixing method of many vertical overlap joints mutually, several Soil-cement Walls overlap the longer Soil-cement Wall of formation mutually, every width Soil-cement Wall is made up of the cement mixing method that the six roots of sensation is vertical, the six roots of sensation cement mixing method same time is formed, six roots of sensation cement mixing method is on same vertical plane, adjacent pile body overlaps mutually, adjacent Soil-cement Wall overlaps mutually.
Such scheme can once be constructed six roots of sensation cement mixing method simultaneously, decrease the multiple tracks seam of former single shaft or the formation of two axle cement mixing methods, improve efficiency of construction, decrease the amount of labour used, compensate for the defects such as three axes agitating pile displacement soil is many, water/binder ratio is large, cement mixing content is large, shorten the construction period more than 2/3rds.But as described in the program, six roots of sensation cement mixing method is on same vertical plane, and therefore agitation pile linearly distributes thus forms the cement mixing method of planar shaped, the uplift resistance of this cement mixing method, intensity need to be improved further.
Summary of the invention
The object of the invention is for the problems referred to above, the Soil-cement 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 Soil-cement bearing peg of easy construction.
For achieving the above object, present invention employs following technical proposal: a kind of Soil-cement bearing peg, comprise by cement and the concretionary pile body of earth, described pile body has the expansion section that at least one radial direction along pile body gives prominence to pile body.
In above-mentioned Soil-cement bearing peg, described expansion section has several, and distance between every two expansion sections is equal or unequal.
In above-mentioned Soil-cement bearing peg, the edge of the cross section of described pile body has the angle in circular arc.
In above-mentioned Soil-cement 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 Soil-cement 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, and the axial line of the pile body in pile body is not at grade.
In above-mentioned Soil-cement bearing peg, any pile body in three pile bodies of composition elementary cell has lap with other two piles bodies respectively.
In above-mentioned Soil-cement bearing peg, be provided with at least one preformed pile in described pile body and the axis parallel of the axial line of preformed pile and pile body, described preformed pile is non-uniform pile or Uniform-section Piles.
In above-mentioned Soil-cement bearing peg, described pile body is quincunx, T-shaped, L shape or cross.
A kind of manufacturing process of Soil-cement bearing peg, some drilling rods and some shotcrete pipes are pressed axial line respectively not arranged evenly at grade, every root drill rod end is provided with drill bit, described drill bit is the adjustable reaming bit of the radius of gyration, in drill bit going down process, drill bit at least should expand a radius of gyration thus make the radius of gyration of drill bit be greater than the radius of gyration of paddle, some drilling rods are simultaneously toward underground drilling, wherein every three drilling rod distributions triangular in shape thus formed an elementary cell drilling rod, every two adjacent elementary cell drilling rods share two drilling rods, when lower brill, the paddle of some drilling rods not at grade and some shotcrete pipes whitewash simultaneously, when getting into set depth under drilling rod, drilling rod and shotcrete pipe promote toward direction, ground simultaneously, in lifting process, shotcrete pipe continues whitewashing.
In the manufacturing process of above-mentioned Soil-cement bearing peg, after drilling rod and shotcrete pipe are lifted out ground, in whitewashing liquid, insert at least one preformed pile.
Compared with prior art, the invention has the advantages that: because the loaded area of pile foundation is large, bearing support point is polygonal 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.
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;
Figure 12 is the structural representation of drilling rod provided by the invention and shotcrete pipe distribution;
Figure 13 is the schematic diagram of Figure 12 other direction.。
In figure: pile body 10, angle 11, expansion section 20, pile body protuberance 21, elementary cell 30, pile body 31, preformed pile 40, drilling rod 101, shotcrete pipe 102, drill bit 103, paddle 104.
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 Soil-cement bearing peg, comprise by cement and the concretionary pile body 10 of earth, 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, and 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, at least one preformed pile 40 is provided with and the axis parallel of the axial line of preformed pile 40 and pile body 10 in pile body 10, preformed pile 40 can have many, the shape of many preformed piles 40 can be the same, also can be different, the shape of preformed pile 40 cross section is square, polygon, circle or other shapes.Preformed pile 40 is non-uniform pile or not non-uniform pile, and variable cross-section described here refers to that the shape of the cross section at diverse location of same pile or size are different.
Present invention also offers a kind of manufacturing process of Soil-cement bearing peg, as shown in Figure 12 and Figure 13, some drilling rods 101 and some shotcrete pipes 102 are pressed axial line respectively not arranged evenly at grade, every root drilling rod 101 end is provided with drill bit 103, described drill bit 103 is the adjustable reaming bit of the radius of gyration, in drill bit 103 going down process, when drill bit 103 runs into the good geological stratification of soil property as clay layer, drill bit 103 at least should expand a radius of gyration thus make the radius of gyration of drill bit 103 be greater than the radius of gyration of paddle 104, thus form the expansion section 20 having filled whitewashing liquid, some drilling rods 101 are simultaneously toward underground drilling, wherein every three drilling rod 101 distributions triangular in shape thus formed an elementary cell drilling rod, every two adjacent elementary cell drilling rods share two drilling rods 101, when lower brill, the paddle 104 of some drilling rods not at grade and some shotcrete pipes 102 whitewash simultaneously, that is the paddle 104 on every root drilling rod 101 can not interfere with an other drilling rod 101 or other paddle 104, when drilling rod gets into set depth 101 times, drilling rod 101 and shotcrete pipe 102 promote toward direction, ground simultaneously, in lifting process, shotcrete pipe 102 continues whitewashing, drilling rod 101 and shotcrete pipe 102 can for several times up and down reciprocatingly, until cement grout fills up boring.Whitewashing liquid can make to be cement paste, also can be that other can fix the mortar of shaping with earth, to mix that after coagulation is shaping is agitation pile at slurries with earth.
After drilling rod 101 and shotcrete pipe 102 are lifted out ground, in whitewashing liquid, insert at least one preformed pile 40, preformed pile 40 is the concrete stake or other stakes that make in advance, and the effect of inserting preformed pile 40 in slurries is the intensity improving agitation pile.
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, preformed pile 40, drilling rod 101, shotcrete pipe 102, drill bit 103, paddle 104 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 Soil-cement bearing peg, comprise by cement and the concretionary pile body of earth (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. Soil-cement 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. Soil-cement 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. Soil-cement 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 Soil-cement 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), and the axial line of the pile body (31) in pile body (10) is not at grade.
6. Soil-cement 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 Soil-cement bearing peg according to claim 1 or 2 or 3 or 4, it is characterized in that, be provided with at least one preformed pile (40) in described pile body (10) and the axis parallel of the axial line of preformed pile (40) and pile body (10), described preformed pile (40) is non-uniform pile or Uniform-section Piles.
8. Soil-cement bearing peg according to claim 5, is characterized in that, described pile body (10) in quincunx, T-shaped, L shape or cross.
9. the manufacturing process of a Soil-cement bearing peg, it is characterized in that, some drilling rods (101) and some shotcrete pipes (102) are pressed axial line respectively not arranged evenly at grade, every root drilling rod (101) end is provided with drill bit (103), ) described in drill bit (103) be the adjustable reaming bit of the radius of gyration, in drill bit (103) going down process, drill bit (103) at least should expand a radius of gyration thus make the radius of gyration of drill bit (103) be greater than the radius of gyration of paddle (104), some drilling rods (101) are simultaneously toward underground drilling, wherein the distribution triangular in shape of every three drilling rods (101) thus formed an elementary cell drilling rod, every two adjacent elementary cell drilling rods share two drilling rods (101), when lower brill, the paddle (104) of some drilling rods not at grade and some shotcrete pipes (102) whitewash simultaneously, when getting into set depth under drilling rod (101), drilling rod (101) and shotcrete pipe (102) promote toward direction, ground simultaneously, in lifting process, shotcrete pipe (102) continues whitewashing.
10. the manufacturing process of Soil-cement bearing peg according to claim 9, is characterized in that, after drilling rod (101) and shotcrete pipe (102) are lifted out ground, in whitewashing liquid, inserts at least one preformed pile (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209278.4A CN104878747A (en) | 2014-04-29 | 2015-04-27 | Cement-soil stirring and bearing pile and formation method thereof |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174652.7A CN104032734A (en) | 2014-04-29 | 2014-04-29 | High-strength triangular plum-blossom-shaped cement soil mixing bearing pile and forming method thereof |
| CN2014101746527 | 2014-04-29 | ||
| CN2014101746565 | 2014-04-29 | ||
| CN201410174656.5A CN104196016A (en) | 2014-04-29 | 2014-04-29 | Quincunx cement soil mixing high-strength bearing pile and forming method |
| CN201510209278.4A CN104878747A (en) | 2014-04-29 | 2015-04-27 | Cement-soil stirring and bearing pile and formation method thereof |
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| Publication Number | Publication Date |
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| CN104878747A true CN104878747A (en) | 2015-09-02 |
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| CN201510209278.4A Pending CN104878747A (en) | 2014-04-29 | 2015-04-27 | Cement-soil stirring and bearing pile and formation method thereof |
| CN201520259876.8U Active CN204662424U (en) | 2014-04-29 | 2015-04-27 | Soil-cement bearing peg |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520259876.8U Active CN204662424U (en) | 2014-04-29 | 2015-04-27 | Soil-cement bearing peg |
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| CN104878747A (en) * | 2014-04-29 | 2015-09-02 | 周兆弟 | Cement-soil stirring and bearing pile and formation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2716339Y (en) * | 2004-08-07 | 2005-08-10 | 曾毅学 | Cement earth stiffening core hole-enlargement pile |
| CN1730839A (en) * | 2004-08-07 | 2006-02-08 | 曾毅学 | Soil-cement pile with core and diameter enlarged extension section |
| CN202073117U (en) * | 2011-05-22 | 2011-12-14 | 王蓉兰 | Underground continuous wall with arrangement of three round connective piles |
| KR20130038313A (en) * | 2013-02-25 | 2013-04-17 | 디엠이엔씨(주) | Phc pile |
| CN104032734A (en) * | 2014-04-29 | 2014-09-10 | 周兆弟 | High-strength triangular plum-blossom-shaped cement soil mixing bearing pile and forming method thereof |
| CN204662424U (en) * | 2014-04-29 | 2015-09-23 | 周兆弟 | Soil-cement bearing peg |
-
2015
- 2015-04-27 CN CN201510209278.4A patent/CN104878747A/en active Pending
- 2015-04-27 CN CN201520259876.8U patent/CN204662424U/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2716339Y (en) * | 2004-08-07 | 2005-08-10 | 曾毅学 | Cement earth stiffening core hole-enlargement pile |
| CN1730839A (en) * | 2004-08-07 | 2006-02-08 | 曾毅学 | Soil-cement pile with core and diameter enlarged extension section |
| CN202073117U (en) * | 2011-05-22 | 2011-12-14 | 王蓉兰 | Underground continuous wall with arrangement of three round connective piles |
| KR20130038313A (en) * | 2013-02-25 | 2013-04-17 | 디엠이엔씨(주) | Phc pile |
| CN104032734A (en) * | 2014-04-29 | 2014-09-10 | 周兆弟 | High-strength triangular plum-blossom-shaped cement soil mixing bearing pile and forming method thereof |
| CN204662424U (en) * | 2014-04-29 | 2015-09-23 | 周兆弟 | Soil-cement bearing peg |
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| CN204662424U (en) | 2015-09-23 |
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Application publication date: 20150902 |