CN204662424U

CN204662424U - Soil-cement bearing peg

Info

Publication number: CN204662424U
Application number: CN201520259876.8U
Authority: CN
Inventors: 周兆弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-29
Filing date: 2015-04-27
Publication date: 2015-09-23
Anticipated expiration: 2025-04-27
Also published as: CN104878747A

Abstract

The utility model belongs to technical field of buildings, relates to a kind of Soil-cement bearing peg.Solve the technical problem of prior art uplift resistance difference and pile strength difference.It comprises by cement and the concretionary pile body of earth, and described pile body has the expansion section that at least one radial direction along pile body gives prominence to pile body.The utility model pile foundation good stability, intensity is high, uplift resistance and anti-bearing capacity strong.

Description

Soil-cement bearing peg

Technical field

The utility model belongs to technical field of buildings, relates to a kind of cement mixing method, particularly relates to a kind of Soil-cement bearing peg.

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.

Utility model content

The purpose of this utility model is for the problems referred to above, provides the cement mixing method that a kind of pile strength is high, uplift resistance is high.

For achieving the above object, the utility model have employed following technical proposal: a kind of Soil-cement bearing peg, and 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.

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.

In above-mentioned Soil-cement bearing peg, described preformed pile is non-uniform pile or Uniform-section Piles.

In above-mentioned Soil-cement bearing peg, the axial line of the pile body in pile body is not at grade.

In above-mentioned Soil-cement bearing peg, described pile body is quincunx, T-shaped, L shape or cross.

Compared with prior art, the utility model has the advantage of: 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 the structural representation that the utility model provides;

Fig. 2 is the another kind of structural representation that the utility model provides;

Fig. 3 is the cross sectional representation of the pile body that the utility model provides;

Fig. 4 is the cross sectional representation of the pile body that the utility model provides;

Fig. 5 is the another kind of cross sectional representation of the pile body that the utility model provides;

Fig. 6 is the another kind of cross sectional representation of the pile body that the utility model provides;

Fig. 7 is the another kind of cross sectional representation of the pile body that the utility model provides;

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, preformed pile 40.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the utility model is described in more 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.

Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model 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 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 utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.

Claims

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), the edge of the cross section of described pile body (10) has the angle (11) in circular arc, 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).

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 1 and 2, 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).

4. Soil-cement bearing peg according to claim 3, 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.

5. Soil-cement bearing peg according to claim 1, 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).

6. Soil-cement bearing peg according to claim 5, is characterized in that, described preformed pile (40) is non-uniform pile or Uniform-section Piles.

7. Soil-cement bearing peg according to claim 3, is characterized in that, the axial line of the pile body (31) in pile body (10) is not at grade.

8. Soil-cement bearing peg according to claim 3, is characterized in that, described pile body (10) in quincunx, T-shaped, L shape or cross.