CN102943467A

CN102943467A - Six-axis cement soil mixing pile

Info

Publication number: CN102943467A
Application number: CN2012104458999A
Authority: CN
Inventors: 刘全林; 宋伟民; 宋雪清
Original assignee: Shanghai Qiangjin Foundation Engineering Co Ltd
Current assignee: Shanghai Qiangjin Foundation Engineering Co Ltd
Priority date: 2012-11-08
Filing date: 2012-11-08
Publication date: 2013-02-27

Abstract

The invention provides a six-axis cement soil mixing pile. Six cement soil mixing piles are formed at one time and overlapped seamlessly, so that joints formed by original single-axis or two-axis cement soil mixing pile are reduced, the water-stopping effect and construction efficiency can be improved, the amount of labor used is reduced, and the construction period can be shortened by more than 2/3.

Description

Six axle cement mixing methods

Technical field

The present invention relates in the geotechnical engineering soft soil is reinforced and the cement mixing method of pattern foundation pit supporting structure, particularly raising weak soil intensity and pattern foundation pit supporting structure sealing keep off the six axle cement mixing methods in native field.

Background technology

When soft layer being reinforced with pattern foundation pit supporting structure, the method that usually adopts cement paste and the soil body to stir forms the Soil-cement pile body, thereby the intensity of soft foundation and sealing is greatly improved.The advantages such as traditional single shaft agitation pile and diaxon agitation pile are compared with three axle agitation piles in certain scope, have a water/binder ratio little, and displacement soil is few, and cement mixing content is little, and cost is low.But single shaft agitation pile or diaxon agitation pile are that the isodiametric cylinders handing-over of or two forms, as shown in Figure 1, form an overlapping the slot between every pile or per two piles, easily cause jag and seepage, this sealing to Soil-cement Wall has a significant impact.For single shaft or two axle cement-soil mixing pile machines, its power is less, the pile frame poor stability, and the stake machine moves manually to add rope traction, in construction, want frequent telephone-moving, take a large amount of working times, affect efficiency of construction, for above problem, in order to reduce telephone-moving number of times and overlapping the slot, reducing construction cost and raising work efficiency, single shaft agitation pile or two axle agitation piles, once the cement mixing method quantity of construction formation is little.For this reason, once forming long Soil-cement piling wall is a kind of new demand in ground stabilization and pattern foundation pit supporting structure field.

Summary of the invention

Technical problem to be solved by this invention is, overcome problems of the prior art, a kind of six axle cement mixing methods that provide ground stabilization or pattern foundation pit supporting structure to use, reduce the overlapping the slot of cement mixing method, improve the stagnant water effect of cement mixing method, improve efficiency of construction and reduction of erection time, reduce labour intensity and reducing construction cost.

Six axle cement mixing methods, cement mixing method is stirred by soil and cement paste and forms, one width of cloth Soil-cement Wall is comprised of the many vertical mutually cement mixing methods of overlap joint, several Soil-cement Walls overlap the longer Soil-cement Wall of formation mutually, it is characterized in that, every width of cloth Soil-cement Wall is comprised of the vertical cement mixing method of the six roots of sensation, and the same time of six roots of sensation cement mixing method forms, six roots of sensation cement mixing method is on same vertical plane, and adjacent pile body overlaps mutually; Adjacent Soil-cement Wall overlaps mutually.

Adjacent Soil-cement Wall overlaps mutually, more than the overlap joint scope 20mm.

Adjacent Soil-cement Wall overlaps mutually, and overlap joint is that a pile overlaps.

Adjacent pile body overlaps mutually, more than the overlap joint scope 20mm.

Six roots of sensation cement mixing method diameter is identical.

The water/binder ratio of cement mixing method 〉=0.3.

The cement mixed weight of Soil-cement 〉=3%.

More than the long 2m of stake of cement mixing method.

More than the diameter 300mm of cement mixing method.

Two adjacent Soil-cement Walls are parallel, mutually overlap or do not overlap.

Beneficial effect: six axle cement mixing methods of the present invention, the six roots of sensation cement mixing method of once constructing simultaneously, reduced the multiple tracks seam that former single shaft or two axle cement mixing methods form, improved efficiency of construction, reduced the amount of labour used, remedy the defectives such as three axle agitation piles displacement soil is many, water/binder ratio is large, cement mixing content is large, shortened the construction period more than 2/3rds.

Description of drawings

Describe the present invention in detail below in conjunction with the drawings and specific embodiments;

Fig. 1 is existing two axle cement-soil mixing pile machine pile floor map.

Fig. 2 is that six axle cement-soil mixing pile machine piles of the present invention overlap floor map mutually.

Fig. 2 a is that a pile overlaps the overlap joint schematic diagram in the adjacent Soil-cement Wall of the present invention.

Fig. 2 b is that adjacent Soil-cement Wall of the present invention does not overlap parallel schematic diagram mutually.

Fig. 2 c is that adjacent Soil-cement Wall of the present invention overlaps parallel schematic diagram mutually.

Fig. 3 is the drilling rod facade arrangement diagram of six axle cement-soil mixing pile machines of the present invention.

Fig. 4 is the side structure schematic diagram of Fig. 3.

The specific embodiment

For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.

Six axle cement mixing methods, cement mixing method is stirred by soil and cement paste and forms, one width of cloth stirs wall and is comprised of the many vertical mutually cement mixing methods of overlap joint, several Soil-cement Walls overlap the longer Soil-cement Wall of formation mutually, every width of cloth Soil-cement Wall is comprised of the vertical cement mixing method of the six roots of sensation, the same time of six roots of sensation cement mixing method forms, and six roots of sensation cement mixing method is on same vertical plane, and adjacent pile body overlaps mutually; Adjacent Soil-cement Wall overlaps mutually.

Elder generation's moulding six roots of sensation cement mixing method forms a secondary continuous Soil-cement Wall, and many secondary Soil-cement Walls form longer Soil-cement Wall.

Referring to Fig. 2, adjacent Soil-cement Wall overlaps mutually, more than the overlap joint scope 20mm.

Referring to Fig. 2 a, adjacent Soil-cement Wall overlaps mutually, and overlap joint is that a pile overlaps, and form of construction work is beaten for cover.

Again or, adjacent pile body overlaps mutually, more than the overlap joint scope 20mm.

Further, six roots of sensation cement mixing method diameter is identical, part is identical or different.Can carry larger soil pressure.

The water/binder ratio of cement mixing method 〉=0.3.The mass ratio of water and cement.Cement mixed weight in the cement mixing method 〉=3%.The mass ratio of cement quality and soil.

More than the long 2m of stake of cement mixing method.More than the diameter 300mm of cement mixing method.

Referring to Fig. 2 b and Fig. 2 c, two adjacent Soil-cement Walls are parallel, mutually overlap or do not overlap.

Fig. 2 d, many piles overlap mutually.

Referring to Fig. 3 and Fig. 4, adopt crawler type or walking pile frame and travel driving system, six roots of sensation drilling rod is arranged on the same vertical plane, arrange 3 shotcrete pipes, six roots of sensation drilling rod drives with six power set respectively, at leading truck of lower termination of drilling cramp, gives respectively six roots of sensation drilling rod guiding.

Ground stabilization or pattern foundation pit supporting structure are with six axle cement-soil stirring pile construction equipment, comprise frame, gantry base is provided with traveling crawler, convenient mobile, be provided with six roots of sensation drilling rod on the frame, drilling rod from left to right is followed successively by the first drilling rod 1, the second drilling rod 2, the 3rd drilling rod 3, the 4th drilling rod 4, the 5th drilling rod 5, the 6th drilling rod 6, six roots of sensation drilling rod is arranged on the same vertical plane, six roots of sensation drilling rod top is provided with six unit heads 10 that are used for driving rod boring, six unit heads are arranged in the liftable headstock, headstock is arranged on the frame, goes back the interval between the six roots of sensation drilling rod and is furnished with shotcrete pipe.

Described shotcrete pipe is three and is respectively 7,8,9, three shotcrete pipes and six roots of sensation drilling rod are arranged on same row's straight line, and three shotcrete pipes are arranged in 6 on the

first drilling rod

1 and 2 on the second drilling rod, the 3rd drilling rod 3 and 4 on the 4th drilling rod, the 5th drilling rod 5 and the 6th drilling rod.All there is drilling rod every shotcrete pipe both sides like this, and shotcrete pipe can be replaced the filling concrete slurry to the soil layer that two drilling rods stir.

Further, be connected with stirring-head 11 in described drilling rod bottom, be provided with blade 12 on the stirring-head.In the drilling process, the blade of stirring-head stirs the layer that loosens the soil, and mixes with the cement paste of shotcrete pipe ejection, forms cement mixing method/wall.

This size can guarantee to rotate freely between the adjacent drill pipes, do not interfere, and pile is intensive.The formation of pile medium power is abundant, and pile-forming speed is effective soon.The pile plan view is seen Fig. 2, once can pile six, greatly improved efficiency of construction, and shorten the construction period.

Six axle cement mixing methods of the present invention, the six roots of sensation cement mixing method of once constructing simultaneously, reduced the multiple tracks seam that former single shaft or two axle cement mixing methods form, improved efficiency of construction, reduced the amount of labour used, remedy the defectives such as three axle agitation piles displacement soil is many, water/binder ratio is large, cement mixing content is large, shortened the construction period more than 2/3rds.

Above demonstration and described basic principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not subjected to the restriction of above-mentioned example; that describes in above-mentioned example and the manual just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims

1. six axle cement mixing methods, cement mixing method is stirred by soil and cement paste and forms, one width of cloth Soil-cement Wall is comprised of the many vertical mutually cement mixing methods of overlap joint, several Soil-cement Walls overlap the longer Soil-cement Wall of formation mutually, it is characterized in that, every width of cloth Soil-cement Wall is comprised of the vertical cement mixing method of the six roots of sensation, and the same time of six roots of sensation cement mixing method forms, six roots of sensation cement mixing method is on same vertical plane, and adjacent pile body overlaps mutually; Adjacent Soil-cement Wall overlaps mutually.

2. six axle cement mixing methods according to claim 1 is characterized in that, adjacent Soil-cement Wall overlaps mutually, more than the overlap joint scope 20mm.

3. six axle cement mixing methods according to claim 1 is characterized in that, adjacent Soil-cement Wall overlaps mutually, and overlap joint is that a pile overlaps.

4. six axle cement mixing methods according to claim 1 is characterized in that, adjacent pile body overlaps mutually, more than the overlap joint scope 20mm.

5. six axle cement mixing methods according to claim 1 is characterized in that, six roots of sensation cement mixing method diameter is identical.

6. six axle cement mixing methods according to claim 1 is characterized in that, six roots of sensation cement mixing method diameter is different.

7. six axle cement mixing methods according to claim 1 is characterized in that, six roots of sensation cement mixing method diameter parts is identical.

8. six axle cement mixing methods according to claim 1 is characterized in that the water/binder ratio of cement mixing method 〉=0.3.

9. six axle cement mixing methods according to claim 1 is characterized in that the cement mixed weight of cement mixing method 〉=3%.

10. six axle cement mixing methods according to claim 1 is characterized in that, more than the long 2m of stake of cement mixing method.

11. six axle cement mixing methods according to claim 1 is characterized in that, more than the diameter 300mm of cement mixing method.

12. six axle cement mixing methods according to claim 1 is characterized in that two adjacent Soil-cement Walls are parallel, mutually overlap or do not overlap.