CN104018493A - Double-shaft air-injection rotary jet type stirring pile machine and method for forming pile by using pile machine - Google Patents
Double-shaft air-injection rotary jet type stirring pile machine and method for forming pile by using pile machine Download PDFInfo
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- CN104018493A CN104018493A CN201410281049.9A CN201410281049A CN104018493A CN 104018493 A CN104018493 A CN 104018493A CN 201410281049 A CN201410281049 A CN 201410281049A CN 104018493 A CN104018493 A CN 104018493A
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Abstract
The invention discloses a double-shaft air-injection rotary jet type stirring pile machine and a method for forming a pile by using the pile machine. The pile machine disclosed by the invention comprises a pile frame, a power head (1), a stirring shaft (2), an air nozzle (9), an air compressor (10), an air transmission header pipe (11) and an air transmission branched pipe (12); a slurry nozzle (8) and the air nozzle (9) are fixed on a stirring head (7); the air nozzle (9) is arranged outside the slurry nozzle (8) in a sleeving manner; the air nozzle (9) is communicated with the air transmission branched pipe (12); the air transmission branched pipe (12) is communicated with the air transmission header pipe (11) and the air compressor (10). The construction method provided by the invention comprise the key step of spraying slurry under coercing of high-pressure air while drilling through a stirring shaft (2) or lifting upwardly and stirring a soil body. Due to the pile machine and the method for forming the pile by utilizing the pile machine, which are disclosed by the invention, piled cemented soil is uniform in density and good in pile-forming quality; the pile-forming depth can be increased; furthermore, a pile can be formed in a soil body with relatively high hardness; in addition, the construction efficiency is improved; the time limit for a project is shortened; the machine-shift cost and the labour cost are saved.
Description
Technical field
The present invention relates to the Construction Techniques for Cement Mixing Pile in field of civil engineering, is specifically a kind of Biaxial Compressive gas rotary ejection type mixing pile machine and the method for utilizing this machine pile.
Background technology
Along with the fast development of national economic development, the especially extensive rise of building construction and urban construction, the construction technology of cement mixing pile is also in continuous development and application.Cement mixing pile is applied to ground stabilization more or in foundation pit supporting system, makes supporting and protection structure and water-stop curtain.
Traditional cement mixing pile machine comprises pile frame, unit head, two parallel shafts (i.e. two shafts), a defeated slurry house steward, two defeated slurries are in charge of, pump for mortar transmission and slurry agitation machine, unit head is arranged on pile frame, shaft is that hollow tubular and two shafts are arranged on unit head, every shaft lower end is fixed with one with the stirring-head of stirring vane through flange, on each stirring-head, be fixed with a whitewashing mouth, each whitewashing mouth is in charge of through defeated slurry, defeated slurry house steward is communicated with pump for mortar transmission, pump for mortar transmission is communicated with slurry agitation machine, every defeated slurry is in charge of in the tube chamber that is arranged on a shaft.
The formation of pile of the cement mixing pile of prior art is: pile-forming machine perching is positioned on design stake position the stirring-head of shaft; Drive shaft rotation and pierce in the soil body downwards, until design elevation at the bottom of getting under the stirring-head of shaft; Upwards promote shaft, while shaft is rotated rise gunite, i.e. rotary jet grouting, until the stirring-head of shaft rises to design of pile top absolute altitude; Creep into for the second time shaft downwards, until design elevation at the bottom of getting under shaft; Upwards promote for the second time shaft rotary jet grouting, until the stirring-head of shaft arrives design of pile top absolute altitude.
Traditional stake machine and utilize the method for conventional piles machine pile to have a very large defect, it is cement grout poor fluidity in the soil body, be difficult to even diffusion, near the cement paste bulk deposition of the mouth that makes to whitewash, and position slurries amount wretched insufficiency slightly far away, and whitewashing mouth is also easily stopped up by hack, naturally cause the soil body to lack cement paste, therefore after stirring, the cement-soil of pile body is not fine and close, inhomogeneous, is seriously lowered into quality of pile; And, along with soil depth increases, it is large that soil body hardness becomes, and slurries are difficult to even diffusion, therefore in the larger soil body of the degree of depth, be difficult to pile, be that the pile degree of depth is limited, be generally no more than 15 meters, or in the original hardness such as sand, clay just in the larger soil body, slurries are more difficult to even diffusion, and nature cannot pile; Equally due to slurries poor fluidity in the soil body, like this, in the process of boring under shaft, the slurries that spray cannot spread, and can only take first lower boring that the soil body is bored to the way of whitewashing when pine is carried shaft on then, like this, need two heavy two to pull out ability pile, efficiency of construction is low, long in time limit, and mechanical stage student contributions pooled to pay for class activities and labour cost are many, deficiency in economic performance.
Summary of the invention
The technical problem that the present invention will solve is, provides a kind of and can make the cement-soil of pile fine and close evenly, pile quality is good, can strengthen the pile degree of depth and also can pile in the larger soil body of hardness and can improve the Biaxial Compressive gas rotary ejection type mixing pile machine of efficiency of construction, reduction of erection time, saving mechanical stage student contributions pooled to pay for class activities and labour cost.
A technical solution of the present invention is, a kind of Biaxial Compressive gas rotary ejection type mixing pile machine is provided, it comprises pile frame, unit head, two parallel shafts, a defeated slurry house steward, two defeated slurries are in charge of, pump for mortar transmission and slurry agitation machine, unit head is arranged on pile frame, shaft is that hollow tubular and two shafts are installed on unit head, every shaft lower end is fixed with one with the stirring-head of stirring vane through flange, on each stirring-head, be fixed with a whitewashing mouth, each whitewashing mouth is in charge of through defeated slurry, defeated slurry house steward is communicated with pump for mortar transmission, pump for mortar transmission is communicated with slurry agitation machine, every defeated slurry is in charge of in the tube chamber that is arranged on a shaft, it also comprises two air nozzles, an air compressor machine, a gas transmission main and two gas transmissions are in charge of, each air nozzle is fixed on a stirring-head, each air nozzle is linked in outside a whitewashing mouth, each air nozzle is communicated with the tube chamber lower end of a shaft, the lower end that the tube chamber upper end of this shaft is in charge of with a gas transmission is communicated with, the upper end that this gas transmission is in charge of is communicated with one end of gas transmission main, the other end of gas transmission main is communicated with air compressor machine.
Another technical problem that the present invention will solve is, provides a kind of and can make the cement-soil of pile fine and close evenly, pile quality is good, can strengthen the pile degree of depth and also can pile in the larger soil body of hardness and can improve the method for utilizing Biaxial Compressive gas rotary ejection type mixing pile machine pile of efficiency of construction, reduction of erection time, saving mechanical stage student contributions pooled to pay for class activities and labour cost.
Another technical solution of the present invention is, a kind of method of utilizing Biaxial Compressive gas rotary ejection type mixing pile machine pile is provided, and its step comprises: pile-forming machine perching is positioned on design stake position the stirring-head of shaft; Drive shaft rotation and pierce downwards and in the soil body, open pump for mortar transmission and slurry agitation machine simultaneously, open again air compressor machine, make shaft stir soil body whitewashing under the sweeping along of pressure-air while rotating lower brill, until stirring-head reach at the bottom of design elevation, then rotate up and promote shaft to stir the soil body, whitewashing under the sweeping along of pressure-air simultaneously, until the stirring-head of shaft arrives design of pile top absolute altitude.
Biaxial Compressive gas rotary ejection type mixing pile machine of the present invention and the method for utilizing this machine pile compared with prior art, have the following advantages and effect:
In whitewashing process, compressed air sweeps along slurries to spray from the surrounding of slurries ringwise, like this, spray pressure can rise to 2～4MPa from 0.2～0.4MPa of prior art, significantly increased the mobility of slurries in the soil body, guarantee slurries evenly diffusion in the soil body, avoided near slurries bulk deposition and in distant positions slurries quantity not sufficient slightly whitewashing mouth, the mouth that equally also prevents from whitewashing is stopped up by hack, avoid causing due to obstruction the situation of soil body slurries quantity not sufficient, therefore be stirred after blade stirring, the cement-soil even compact of pile body, pile quality is good, and slurries also can evenly spread smoothly in the harder soil body, like this, also can pile in harder sandy soils, argillic horizon, same in the larger soil body of the degree of depth also pile smoothly, significantly increased the pile degree of depth, more than the pile degree of depth of the present invention can reach 30m, equally because spray pressure increases, slurries mobility in the soil body is strong, like this, without the shaft that must first sink, bore the body that loosens the soil and promote again shaft slip casting as prior art, but direct rotary jet grouting in lower brill shaft, be about to the lower brill of prior art, on pull out slip casting, again, bore, the process of pulling out slip casting has again become lower brill of the present invention slip casting, pull up again and slip casting, that is to say, by two heavy two of prior art, pull out and become one heavy one and pull out, increased substantially efficiency of construction, accelerate speed of application, reduction of erection time, save mechanical stage student contributions pooled to pay for class activities and labour cost, good in economic efficiency.
As improvement, on pile frame, be fixed with a transverse strut, transverse strut is provided with two the first spacing holes, two shaft activities are engaged in the first spacing hole, like this, this horizontal linking beam can make two shafts keep vertically, prevents in going down process that shaft is stressed and off normal is crooked.
As improving again, it also comprises a movable contact beam, movable contact beam is provided with two the second spacing holes, on every shaft, be fixed with the Horizontal limiting plate of twice differing heights, every shaft shaft part between twice Horizontal limiting plate is rotatably linked in the second spacing hole, and like this, movable contact beam can be along with two shaft liftings, in shaft going down process, keep two distances between shaft, two shafts are kept vertically.
As improving again, air nozzle is the air nozzle closing up in exit, and like this, pressure-air is from the process of air nozzle closing in ejection, and cross section of fluid channel is long-pending to be dwindled to some extent, pressure-air flow velocity is further accelerated, thereby further increased spray pressure.
As further improvement, each whitewashing mouth is concentric with the air nozzle being linked in outside this whitewashing mouth, and like this, the pressurized effect that air pressure sprays slurries is better.
Accompanying drawing explanation
Fig. 1 is the structural representation of Biaxial Compressive gas rotary ejection type mixing pile machine of the present invention.
Fig. 2 is the amplification sectional structure schematic diagram of the stirring-head of Biaxial Compressive gas rotary ejection type mixing pile machine of the present invention.
Shown in figure 1, unit head, 2, shaft, 3, defeated slurry house steward, 4, defeated slurry is in charge of, and 5, slurry agitation machine, 6, flange, 7, stirring-head, 8, whitewashing mouth, 9, air nozzle, 10, air compressor machine, 11, gas transmission main, 12, gas transmission is in charge of, 13, transverse strut, the 14, first spacing hole, 15, movable contact beam, 16, the second spacing hole, 17, Horizontal limiting plate, 18, pump for mortar transmission.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1 and Figure 2, Biaxial Compressive gas rotary ejection type mixing pile machine of the present invention, it comprises, and pile frame, unit head 1, two parallel shafts 2, defeated slurry house steward 3, two defeated slurries are in charge of 4, pump for mortar transmission 18 and slurry agitation machine 5.Unit head 1 is arranged on pile frame, and shaft 2 is the lower end that hollow tubular and two shafts 2 are installed in unit head 1, and every shaft 2 lower ends are fixed with one with the stirring-head 7 of stirring vane through flange 6.On each stirring-head 7, be fixed with a whitewashing mouth 8, each whitewashing mouth 8 through defeated slurry be in charge of 4, defeated slurry house steward 3 is communicated with pump for mortar transmission 18, pump for mortar transmission 18 is communicated with slurry agitation machine 5.Every defeated slurry is in charge of 4 and is arranged in the tube chamber of a shaft 2, specifically, stirring-head 7 Nei Yeyou hollow chamber, defeated slurry is in charge of the tube chamber that most of pipeline section of 4 is positioned at shaft 2, defeated slurry is in charge of 4 bottom fraction pipeline sections and is positioned at the chamber of stirring-head 7 and is communicated with whitewashing mouth 8, and defeated slurry is in charge of a part of pipeline section on 4 tops and is stretched out the tube chamber of shaft 2 and be communicated with defeated slurry house steward 3.In other words, the defeated slurry house steward 3 of this Biaxial Compressive gas rotary ejection type mixing pile machine is in charge of 4 with two defeated slurries and is communicated with, and two defeated slurries are in charge of 4 and have been communicated with respectively two whitewashing mouths 8.
This Biaxial Compressive gas rotary ejection type mixing pile machine also comprises that two air nozzles 9, air compressor machine 10, a gas transmission main 11 and two gas transmissions are in charge of 12, each air nozzle 9 is fixed on a stirring-head 7, and each air nozzle 9 is concentric and be linked in this whitewashing mouth 8 peripheries with whitewashing mouth 8.Each air nozzle 9 is communicated with through the chamber of a stirring-head 7 and the tube chamber lower end of a shaft 2, and specifically, each air nozzle 9 is communicated with the chamber of a stirring-head 7, and the chamber of this stirring-head 7 is communicated with the tube chamber lower end of a shaft 2.The tube chamber upper end of this shaft 2 and a gas transmission are in charge of 12 lower end and are communicated with, and this gas transmission is in charge of 12 upper end and is communicated with one end of gas transmission main 11, and the other end of gas transmission main 11 is communicated with air compressor machine 10.The air nozzle 9 that air nozzle 9 closes up for exit, specifically, air nozzle 9 is the Rotary-table constantly closing up, the bore in exit is minimum.
Gas transmission main 11 lower ends of this Biaxial Compressive gas rotary ejection type mixing pile machine are in charge of 12 with two gas transmissions respectively and are communicated with, two gas transmissions are in charge of 12 and are communicated with the tube chamber of a shaft 2 separately, the tube chamber of every shaft 2 is communicated with the chamber of a stirring-head 7, and the chamber of each stirring-head 7 is communicated with an air nozzle 9.
On pile frame, be fixed with a transverse strut 13, transverse strut 13 is provided with 14, two shaft 2 activities of two the first spacing holes and is engaged in the first spacing hole 14.
This Biaxial Compressive gas rotary ejection type mixing pile machine also comprises a movable contact beam 15, movable contact beam 15 is provided with two the second spacing holes 16, on every shaft 2, be fixed with the Horizontal limiting plate 17 of twice differing heights, every shaft 2 shaft part between twice Horizontal limiting plate 17 is rotatably linked in the second spacing hole 16.
The method of utilizing Biaxial Compressive gas rotary ejection type mixing pile machine pile of the present invention, its step comprises: pile-forming machine perching is positioned on design stake position the stirring-head 7 of shaft 2; Drive shaft 2 rotations and pierce downwards and in the soil body, open pump for mortar transmission 18 and slurry agitation machine 5 simultaneously, open again air compressor machine 10, make shaft 2 stir soil body whitewashing under the sweeping along of pressure-air while rotating lower boring, until stirring-head 7 reach at the bottom of design elevation, then rotate up and promote shaft 2 to stir the soil body, whitewashing under the sweeping along of pressure-air simultaneously, until the stirring-head 7 of shaft 2 arrives design of pile top absolute altitude.
Claims (6)
1. a Biaxial Compressive gas rotary ejection type mixing pile machine, it comprises pile frame, unit head (1), two parallel shafts (2), a defeated slurry house steward (3), two defeated slurries are in charge of (4), pump for mortar transmission (18) and slurry agitation machine (5), unit head (1) is arranged on pile frame, shaft (2) is installed on unit head (1) for hollow tubular and two shafts (2), every shaft (2) lower end is fixed with a stirring-head with stirring vane (7) through flange (6), on each stirring-head (7), be fixed with a whitewashing mouth (8), each whitewashing mouth (8) is in charge of (4) through defeated slurry, defeated slurry house steward (3) is communicated with pump for mortar transmission (18), pump for mortar transmission (18) is communicated with slurry agitation machine (5), every defeated slurry is in charge of in the tube chamber that (4) be arranged on a shaft (2), it is characterized in that: it also comprises two air nozzles (9), an air compressor machine (10), (12) are in charge of in a gas transmission main (11) and two gas transmissions, each air nozzle (9) is fixed on a stirring-head (7), each air nozzle (9) is linked in outside a whitewashing mouth (8), each air nozzle (9) is communicated with the tube chamber lower end of a shaft (2), the lower end that (12) are in charge of with a gas transmission in the tube chamber upper end of this shaft (2) is communicated with, the upper end that (12) are in charge of in this gas transmission is communicated with one end of gas transmission main (11), the other end of gas transmission main (11) is communicated with air compressor machine (10).
2. Biaxial Compressive gas rotary ejection type mixing pile machine according to claim 1, it is characterized in that: on pile frame, be fixed with a transverse strut (13), transverse strut (13) is provided with two the first spacing holes (14), and two shafts (2) activity is engaged in the first spacing hole (14).
3. Biaxial Compressive gas rotary ejection type mixing pile machine according to claim 1, it is characterized in that: it also comprises a movable contact beam (15), movable contact beam (15) is provided with two the second spacing holes (16), on every shaft (2), be fixed with the Horizontal limiting plate (17) of twice differing heights, the shaft part that every shaft (2) is arranged between twice Horizontal limiting plate (17) is rotatably linked in the second spacing hole (16).
4. Biaxial Compressive gas rotary ejection type mixing pile machine according to claim 1, is characterized in that: the air nozzle (9) that air nozzle (9) closes up for exit.
5. Biaxial Compressive gas rotary ejection type mixing pile machine according to claim 1, is characterized in that: each whitewashing mouth (8) is concentric with the air nozzle (9) being linked in outside this whitewashing mouth (8).
6. the method for utilizing the Biaxial Compressive gas rotary ejection type mixing pile machine pile of claim 1, is characterized in that: its step comprises: pile-forming machine perching is positioned on design stake position the stirring-head (7) of shaft (2); Drive shaft (2) rotation and pierce downwards and in the soil body, open pump for mortar transmission (18) and slurry agitation machine (5) simultaneously, open again air compressor machine (10), make shaft (2) stir soil body whitewashing under the sweeping along of pressure-air while rotating lower boring, until stirring-head (7) reach at the bottom of design elevation, then rotate up and promote shaft (2) to stir the soil body, whitewashing under the sweeping along of pressure-air simultaneously, until the stirring-head (7) of shaft (2) arrives design of pile top absolute altitude.
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| CN201410281049.9A CN104018493B (en) | 2014-06-20 | 2014-06-20 | Biaxial Compressive gas rotary ejection type mixing pile machine and utilize the method for this machine pile |
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| CN201410281049.9A CN104018493B (en) | 2014-06-20 | 2014-06-20 | Biaxial Compressive gas rotary ejection type mixing pile machine and utilize the method for this machine pile |
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Cited By (10)
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| CN104631446A (en) * | 2015-01-14 | 2015-05-20 | 中交天津港湾工程研究院有限公司 | Technical method for improving quality of deep cement soil mixing piles using compressed air foam |
| CN104878750A (en) * | 2015-06-05 | 2015-09-02 | 赵子健 | Rhombic combined stirring and pile forming machine |
| CN105937237A (en) * | 2016-06-24 | 2016-09-14 | 宁波鸿晨建设有限公司 | Multi-axis compressed air rotary-spaying mixing pile machine and method for forming pile by utilizing pile machine |
| CN106049471A (en) * | 2016-06-08 | 2016-10-26 | 叶长青 | Hard stone layer rotary jet stirring device |
| CN106284326A (en) * | 2016-08-30 | 2017-01-04 | 浙江坤德创新岩土工程有限公司 | Deep-mixing pile driver |
| CN106854871A (en) * | 2017-03-02 | 2017-06-16 | 陕西桩鑫建设工程有限公司 | A kind of vertical cement mixing pile former and molding construction method |
| CN110158583A (en) * | 2019-04-19 | 2019-08-23 | 铁三院(天津)工程有限公司 | Comprehensive rotary-cut mix (ARM) pile driving construction device and construction method |
| CN110700249A (en) * | 2019-09-19 | 2020-01-17 | 江苏劲桩基础工程有限公司 | Construction method of high-compactness clay forced-expansion composite pile |
| CN111794219A (en) * | 2020-07-21 | 2020-10-20 | 江西省地质工程(集团)公司 | Construction method for reinforcing foundation by single-machine double-shaft jet grouting pile |
| CN115262559A (en) * | 2022-07-29 | 2022-11-01 | 东南大学 | Stirring device design parameter optimization method, stirring device and contaminated soil pile forming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110158583A (en) * | 2019-04-19 | 2019-08-23 | 铁三院(天津)工程有限公司 | Comprehensive rotary-cut mix (ARM) pile driving construction device and construction method |
| CN110158583B (en) * | 2019-04-19 | 2020-12-01 | 铁三院(天津)工程有限公司 | All-dimensional rotary-cut mixing (ARM) pile construction device and construction method |
| CN110700249A (en) * | 2019-09-19 | 2020-01-17 | 江苏劲桩基础工程有限公司 | Construction method of high-compactness clay forced-expansion composite pile |
| CN111794219A (en) * | 2020-07-21 | 2020-10-20 | 江西省地质工程(集团)公司 | Construction method for reinforcing foundation by single-machine double-shaft jet grouting pile |
| CN115262559A (en) * | 2022-07-29 | 2022-11-01 | 东南大学 | Stirring device design parameter optimization method, stirring device and contaminated soil pile forming method |
| CN115262559B (en) * | 2022-07-29 | 2024-02-13 | 东南大学 | Design parameter optimization method for stirring device, stirring device and contaminated soil piling method |
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