CN114875900B - Soil micro-disturbance deep stirring device - Google Patents
Soil micro-disturbance deep stirring device Download PDFInfo
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- CN114875900B CN114875900B CN202111205135.8A CN202111205135A CN114875900B CN 114875900 B CN114875900 B CN 114875900B CN 202111205135 A CN202111205135 A CN 202111205135A CN 114875900 B CN114875900 B CN 114875900B
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- 238000003756 stirring Methods 0.000 title claims abstract description 63
- 239000002689 soil Substances 0.000 title claims abstract description 50
- 238000010276 construction Methods 0.000 claims abstract description 97
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 92
- 239000010959 steel Substances 0.000 claims abstract description 92
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 238000005553 drilling Methods 0.000 claims description 19
- 238000005520 cutting process Methods 0.000 claims description 14
- 230000001681 protective effect Effects 0.000 claims description 13
- 230000007704 transition Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 15
- 239000002002 slurry Substances 0.000 abstract description 13
- 239000011268 mixed slurry Substances 0.000 abstract description 4
- 238000013459 approach Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000009987 spinning Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a soil body perturbation deep stirring device and a stirring pile construction method, which comprise construction machinery, a steel sleeve and a perturbation deep stirring drill bit which can be respectively connected with the construction machinery, wherein the perturbation deep stirring drill bit is arranged in the steel sleeve, an external fixing piece which can be matched and fixed with an external fixing device is arranged on the outer side of the steel sleeve, and a connecting part for connecting the construction machinery is detachably arranged at the upper end of the steel sleeve. The invention has the advantages that the approach and construction disturbance of the common steel sleeve construction machinery can be saved, meanwhile, the construction cost can be saved by adopting a one-machine two-purpose mode, and the construction efficiency is improved; prevent the mixed slurry from generating mud balls and slurry overflow, improve the stirring effect and strengthen the soil reinforcing capacity.
Description
Technical Field
The application relates to the technical field of soil body micro-disturbance deep construction, in particular to a soil body micro-disturbance deep stirring device.
Background
The scarcity of urban land resources causes urban development which cannot be expanded without limit, and how to efficiently utilize urban space to meet the daily life work and study of people becomes a problem to be solved urgently in the construction industry. Building adjacent to existing buildings in urban space and building up of the buildings are one of important ways of expanding capacity of the urban space at present. However, existing buildings with dense cities have strict requirements on foundation pit deformation: deep lateral deformation of soil outside the pit meets the first-level protection level, and adjacent building cracks (if any) and ground cracks (if any) outside the foundation pit meet the first-level, second-level and third-level protection levels; the absolute settlement and horizontal displacement of the subway structure facilities are less than or equal to 20mm; the peak speed of vibration generated by piling vibration and explosion to the tunnel is less than or equal to 2.5 cm/s. The above various control deformation requirements limit the area of the newly built foundation pit, so that the actual use area of the final building (construction) is reduced and the requirement of urban space expansion cannot be met. In the pile side soft soil reinforcement process of foundation pit excavation, the deep mixing pile can increase the pressure intensity of passive soil outside the foundation pit, reduce the lateral extrusion of the foundation and reduce the influence on surrounding original buildings so as to enter the field of foundation treatment, and can be used as an underground impervious wall to prevent groundwater seepage from entering the bottom of the foundation pit. The construction industry develops a series of improvement measures such as a single-shaft stirring pile, a double-shaft stirring pile, a triaxial stirring pile and a bidirectional single-shaft stirring pile in combination with actual engineering, can refer to the utility model patent disclosed by patent application number 2014203392490, and develops a novel natural slurry discharging deep stirring pile, namely an IMS (information management system) method on the basis of a single-shaft stirring pile machine.
The conventional deep mixing pile construction process flow is as follows: the construction process comprises the steps of positioning construction machinery, drilling down to a designated position, stirring the drilling bit to jet slurry and soil, lifting to the ground, repeatedly drilling down and stirring, and completing construction after the drilling bit is lifted. Engineering practice proves that the above deep mixing piles can not effectively reduce disturbance to surrounding soil: taking an IMS construction method as an example, the maximum value of the top of the deep soil displacement in the construction process is 45mm, the maximum value of the bottom is 5mm, and the deep soil displacement is measured within the range of +/-3 mm when the construction is finished. Considering that the disturbance influence of the pile construction process is the greatest, the analysis results show that the modes do not meet the requirements of micro disturbance construction. Therefore, a micro-disturbance deep stirring device for foundation treatment of the adjacent space of the existing building and a construction method are designed.
Disclosure of Invention
Based on the defects in the prior art, the invention provides the micro-disturbance deep stirring device and the stirring pile construction method, and the pile construction machine based on the IMS construction method can save the approach and construction disturbance of the common steel sleeve construction machine, and simultaneously can save the construction cost and improve the construction efficiency by adopting a one-machine dual-purpose mode.
The invention further aims to prevent the mixed slurry from generating mud balls and slurry overflow, improve the stirring effect and enhance the soil reinforcing capacity.
In order to achieve the above object, the present invention adopts the following technical scheme.
The utility model provides a soil body perturbation moves deep agitating unit, includes construction machinery, characterized by still includes steel sleeve and the perturbation deep agitating bit that can connect construction machinery respectively, and the perturbation deep agitating bit sets up inside the steel sleeve, is equipped with the external mounting that can cooperate fixedly with outside fixing device in the steel sleeve outside, and the connecting component of connecting construction machinery can be dismantled to the upper end of steel sleeve.
The steel sleeve and the micro-disturbance deep stirring drill bit can be independently connected with construction machinery, a connecting part at the upper end of the steel sleeve can be arranged in a detachable mode, during construction, the steel sleeve is spun in place through the construction machinery, then the steel sleeve is fixed through an external fixing piece, separation of the steel sleeve and the construction machinery is completed through the connecting part, then the micro-disturbance deep stirring drill bit is connected with the construction machinery for construction, soil in the steel sleeve and below the steel sleeve is stirred, pile casting is completed finally, due to the arrangement of the steel sleeve, structural damage of the drill bit to surrounding soil in the construction process is small, especially the displacement value of the deep soil is smaller, disturbance influence on pile construction is reduced, and the forming quality of a pile is improved; preventing the deformation control of the adjacent existing building from being affected by the presence of the disturbance.
Preferably, the micro-disturbance deep stirring drill bit comprises a drill rod, wherein a connecting component matched with construction machinery is arranged at the upper end of the drill rod, a plurality of groups of blade groups are arranged on the drill rod, and a protective steel shell is arranged outside the blade groups; the lower end of the drill rod is provided with a pointed head and a guniting port. The multiple groups of blade groups cooperate with each other, and the stirring effect is reliable; puncturing is realized at the tip of the drill rod, and slurry is sprayed out from a slurry spraying port to finish stirring and forming of the stirring pile; the outer end of the blade group can be protected by the protective steel shell, so that the service life of the blade group is prolonged; the guniting port is arranged at the bottom of the drill rod within the range of protecting the steel shell, so that disturbance of guniting pressure to surrounding soil is effectively relieved, and the effect of micro disturbance construction is realized.
Preferably, the lower end of the protective steel shell is provided with cutting serrations. The arrangement of the cutting saw teeth enables the protection steel shell to have stirring and cutting effects, and the protection steel shell participates in the cutting of soil body together, so that the whole micro-disturbance deep stirring drill bit can conveniently move downwards along with the drill rod.
Preferably, the blade set comprises a first blade set, a second blade set, a third blade set and a fourth blade set, wherein the first blade set comprises a plurality of first blade units which are arranged around the circumference array of the drill rod axis, the second blade set comprises a plurality of second blade units which are arranged around the circumference array of the drill rod axis, the fourth blade set comprises a plurality of fourth blade units which are arranged around the circumference array of the drill rod axis, the first blade units, the second blade units and the fourth blade units are all obliquely arranged with the drill rod axis, the first blade units and the fourth blade units are correspondingly arranged in parallel, and an included angle exists between the second blade units and the first blade units.
The blade units in the same blade group are obliquely arranged, and certain included angles are formed between the second blade unit and the first blade unit as well as between the second blade unit and the fourth blade unit, so that the soil body cutting capacity can be improved.
Preferably, the connecting part comprises a first bolt and a locking jack arranged on the first bolt, a rotary platform and a rotary disc are arranged at the lower end of the first bolt, and engaging saw teeth matched with the upper end of the steel sleeve are arranged at the lower side of the rotary disc. The bolt connection mode is adopted, and the pin is used for carrying out secondary fixed connection, so that the replacement is convenient, the disassembly and the installation are convenient.
Preferably, the connecting assembly comprises a second bolt arranged at the upper end of the drill rod, and a fixed jack is arranged on the second bolt. And the connecting part adopts a replaceable bolt connection mode, so that the installation convenience of the construction machinery matched with the steel sleeve and the micro-disturbance deep stirring drill bit is improved, and the length of the drill rod can be increased to meet the stirring reinforcement requirements of different depths.
Preferably, the external fixing piece is provided with a plurality of symmetrically arranged external fixing pieces outside the steel sleeve. The fixing stability of the steel sleeve is improved.
Preferably, the third blade group comprises a lantern ring and a third blade unit arranged outside the lantern ring, the lantern ring and the drill rod are movably arranged, the upper end and the lower end of the lantern ring are respectively provided with an elastic wave strip, and the outer end of the elastic wave strip is provided with a connecting ring; the first blade group, the second blade group and the fourth blade group are fixedly connected with the protection steel shell, and the third blade group and the protection steel shell are arranged in a separated mode. The third blade group is free blade, does not rotate along with the rotation of drilling rod, but rotates passively along with the soil body stirring, not only can play radial vortex effect, can also play the effect of axial stirring, can prevent to mix thick liquid and produce mud ball and emit thick liquid, improves stirring effect reinforcing soil body reinforcing ability.
Preferably, the shape of the lantern ring is a cambered surface shape, the two ends of the lantern ring are in sliding fit with the drill rod, the end part of the lantern ring and the elastic wavy strips are in smooth transition, the two ends of the lantern ring are respectively provided with a plurality of elastic wavy strips, the plurality of elastic wavy strips are arranged in an array around the circumference of the axis of the lantern ring, and the outer side of the end part of the lantern ring is provided with a reinforcing ring; the inside of the lantern ring and the side surface of the drill rod are arranged in a clearance way. The smooth transition of the two ends of the lantern ring matched with the elastic wavy strips can play a role in arc lamination at the two ends, the lantern ring is in an arc shape, the lantern ring is fed back by the axial force of the soil body obviously, the flow speed of the soil body in the radial direction of the steel sleeve cannot be guaranteed to be equal in the stirring process, so that the feedback force of the soil body to the third blade group is possibly uneven, moreover, mud balls and slurry discharge existing in the soil body, the axial force of the third blade group can generate torsion action on the third blade group, the rigidity torsion of the axial torsion to the third blade group can be counteracted through the lantern ring matched with the elastic wavy strips arranged on the arc surface, the service life of the third blade group is prolonged, the synchronism of the lantern ring and the drill rod is improved when the mud balls and slurry discharge act, and the elastic deformation of the third blade group is reset under the action of elasticity, and thus the cutting stirring action on the mud balls and the slurry discharge can be very high; and when the third blade group slides up and down to the limit, the third blade group can be reset under the elastic action of the elastic wave strip, so that the third blade group has a reliable axial stirring effect, and the stirring efficiency can be greatly improved.
The stirring pile construction method based on the soil body perturbation deep stirring device is characterized by comprising the following steps of:
A. carrying out ground hardening treatment on the construction area;
B. Positioning the center of a drilling hole;
C. the construction machine is connected with a steel sleeve, and the steel sleeve is screwed into the soil body;
D. When the steel sleeve reaches a designated position, the steel sleeve is connected with an external fixing device through an external fixing piece, so that the steel sleeve is fixed;
E. the construction machine is separated from the connecting component, the connecting component is separated from the steel sleeve, and the drill rod is connected to the construction machine through the connecting component to perform deep mixing pile construction operation;
F. and (3) circulating the steps A to E until the whole construction is completed.
The invention has the following beneficial effects:
1. The application is based on IMS construction method pile construction machinery, can save the approach and construction disturbance of the common steel sleeve construction machinery, can save the construction cost by adopting a one-machine dual-purpose mode at the same time, and improves the construction efficiency;
2. According to the invention, the protective steel shell is added outside the drill bit, the bottom is provided with the cutting saw teeth, the cutting saw teeth participate in the cutting of soil body together, meanwhile, the blades have a certain inclination angle, a certain angle exists between the blades, the soil body cutting capacity is improved, the slurry spraying port is arranged at the bottom of the drill rod within the protective steel shell range, the disturbance of the slurry spraying pressure on the surrounding soil body is effectively slowed down, and the effect of micro-disturbance construction is realized;
3. The invention adopts a bolt connection mode and carries out secondary fixed connection by the pin, thus being convenient to replace, convenient to detach and install, and being capable of increasing the length of the drill rod to meet the stirring and reinforcing requirements of different depths;
4. According to the invention, the third blade group is added as the free blades, so that the mixed slurry is prevented from generating mud balls and overflowing, the stirring effect is improved, and the soil reinforcing capacity is enhanced;
5. the invention has simple structure and convenient operation, and effectively improves the working efficiency.
Drawings
FIG. 1 is a flow chart of a micro-disturbance construction process of a deep mixing pile;
FIG. 2 is a schematic view of the construction of a steel sleeve of the present invention;
FIG. 3 is a schematic view of the construction of a deep mixing pile according to the present invention;
FIG. 4 is a schematic diagram of the structure of the deep mixing pile according to the present invention;
FIG. 5 is a schematic view of a micro-disturbance deep agitation drill bit according to the present invention;
FIG. 6 is a schematic view of the structure of the connecting member of the present invention;
FIG. 7 is a top view of FIG. 6;
Fig. 8 is a schematic view of the third vane pack of the present invention in semi-section on a drill pipe.
In the figure: the construction machine 1, the steel sleeve 2, the existing building influence area 3, the fixing device 4, the external fixing piece 5, the micro-disturbance deep stirring drill bit 6, the IMS construction method pile forming 7, the drill rod 61, the protection steel shell 62, the first blade group 63, the second blade group 64, the third blade group 65, the fourth blade group 66, the guniting port 67, the pointed head 68, the cutting saw tooth 69, the first bolt 70, the locking jack 71, the second bolt 72, the fixed jack 73, the rotary platform 74, the spinning disk 75, the engagement saw tooth 76, the collar 77, the elastic wave strip 78, the connecting ring 79 and the reinforcing ring 80.
Detailed Description
The invention is further illustrated in the following, in conjunction with the accompanying drawings and specific embodiments.
In the case of example 1,
As shown in fig. 2 to 8, the soil micro-disturbance deep stirring device is used for the construction of deep stirring piles, comprises a construction machine 1, a steel sleeve 2 and a micro-disturbance deep stirring drill bit 6 which can be respectively connected with the construction machine 1, wherein the total length of the steel sleeve 2 is not more than 20% and not less than 1.5m of the pile length of the deep stirring piles. The construction machine 1 adopts an IMS construction method pile construction machine 1, and construction operation transformation design suitable for spinning the steel sleeve 2 is carried out on the construction machine. The micro-disturbance deep stirring drill bit 6 is arranged inside a cylinder where the steel sleeve 2 is located, an external fixing piece 5 which can be matched and fixed with the external fixing device 4 is arranged on the outer side of the steel sleeve 2, and two symmetrical fixing pieces are arranged on the outer side of the steel sleeve 2 in the external fixing piece 5. The external fixing piece 5 is arranged to protrude outwards from the outer side surface of the upper end of the steel sleeve 2. The upper end of the steel sleeve 2 is detachably provided with a connecting part for connecting the construction machine 1. The connecting part comprises a first bolt 70 and a locking jack 71 arranged on the first bolt 70, a rotary platform 74 and a spinning disc 75 are arranged at the lower end of the first bolt 70, and a meshing saw tooth 76 matched with the upper end of the steel sleeve 2 is arranged at the lower side of the spinning disc 75. The first latch 70 is a hexagonal latch, and the locking insertion hole 71 is located at a side of the first latch 70. The shape of the engagement saw teeth 76 is an isosceles trapezoid with an arc surface, the tooth shape at the upper end of the steel sleeve 2 corresponds to the engagement saw teeth 76, radial synchronization of the connecting component and the steel sleeve 2 can be achieved after the engagement saw teeth 76 are engaged, the steel sleeve 2 can be driven to synchronously press down when the construction machine 1 is pressed down, and the connecting component and the steel sleeve 2 can be easily separated when the construction machine 1 is upwards.
The micro-disturbance deep stirring drill bit 6 comprises a drill rod 61, a connecting component matched with the construction machine 1 is arranged at the upper end of the drill rod 61, the connecting component comprises a second plug pin 72 arranged at the upper end of the drill rod 61, and a fixed plug hole 73 is formed in the second plug pin 72. The drill rod 61 is provided with a plurality of groups of blade groups, and a protective steel shell 62 is arranged outside the blade groups; the lower end of the drill rod 61 is provided with a tip 68 and a guniting port 67. The tip 68 protrudes outside the lower end of the protective steel shell 62, and the gunite 67 corresponds to the inside of the lower end of the protective steel shell 62. The shape of the protective steel shell 62 is circular; the lower end surface of the protective steel shell 62 is provided with cutting serrations 69. The blade group includes first blade group 63, second blade group 64, third blade group 65 and fourth blade group 66, first blade group 63 includes four first blade units that set up around drilling rod 61 axis circumference array, second blade group 64 includes four second blade units that set up around drilling rod 61 axis circumference array, fourth blade group 66 includes four fourth blade units that set up around drilling rod 61 axis circumference array, first blade unit, second blade unit and fourth blade unit all set up with drilling rod 61 axis slope, first blade unit and fourth blade unit correspond parallel arrangement, the contained angle of first blade unit and drilling rod 61 is 45 degrees, the contained angle of second blade unit and drilling rod 61 is 45 degrees, the contained angle of fourth blade unit and drilling rod 61 is 45 degrees, there is the contained angle between second blade unit and the first blade unit. An included angle of 45 degrees is formed between the second blade unit and the first blade unit and rotates around the drill rod 61, the first blade group 63 is fixedly connected with the drill rod 61 and the protection steel shell 62 respectively, the second blade group 64 is fixedly connected with the drill rod 61 and the protection steel shell 62 respectively, and the fourth blade group 66 is fixedly connected with the drill rod 61 and the protection steel shell 62 respectively. The undersides of the first blade unit, the second blade unit, the third blade unit and the fourth blade unit are provided with cutting serrations 69. The third vane group 65 comprises a lantern ring 77 and a third vane unit arranged outside the lantern ring 77, the lantern ring 77 and the drill rod 61 are movably arranged, the upper end and the lower end of the lantern ring 77 are respectively provided with an elastic wave strip 78, and the outer end of the elastic wave strip 78 is provided with a connecting ring 79; the first vane group 63, the second vane group 64 and the fourth vane group 66 are all fixedly connected with the protective steel shell 62, and the third vane group 65 and the protective steel shell 62 are separately arranged. The shape of the lantern ring 77 is a cambered surface shape, two ends of the lantern ring 77 are in sliding fit with the drill rod 61, the end part of the lantern ring 77 and the elastic wave strips 78 are in smooth transition, a plurality of elastic wave strips 78 are respectively arranged at the two ends of the lantern ring 77, the plurality of elastic wave strips 78 are arranged in a circumferential array around the axis of the lantern ring 77, and a reinforcing ring 80 is arranged at the outer side of the end part of the lantern ring 77; the collar 77 is disposed internally and laterally in clearance with the drill rod 61.
The steel sleeve 2 and the micro-disturbance deep stirring drill bit 6 can be independently connected with the construction machine 1, the connecting part at the upper end of the steel sleeve 2 can be arranged in a detachable mode, during construction, the steel sleeve 2 is spun in place through the construction machine 1, then the steel sleeve 2 is fixed through the external fixing part 5, the steel sleeve 2 and the construction machine 1 are separated through the connecting part, then the micro-disturbance deep stirring drill bit 6 is connected with the construction machine 1 for construction, soil bodies in the steel sleeve 2 and below the steel sleeve are stirred, and finally pile casting is finished, and due to the arrangement of the steel sleeve 2, the structural damage of the drill bit to surrounding soil bodies in the construction process is small, especially the displacement value of the deep soil body is smaller, the disturbance influence on the pile construction is reduced, and the forming quality of the pile is improved; preventing the deformation control of the adjacent existing building from being affected by the presence of the disturbance. The third blade group 65 is a free blade, does not rotate along with the rotation of the drill rod 61, but passively rotates along with the stirring of the soil body, so that the radial turbulence effect can be achieved, the axial stirring effect can be achieved, the mud balls and the slurry overflow can be prevented from being generated by the mixed slurry, and the stirring effect is improved to enhance the soil body reinforcing capability. The smooth transition of the two ends of the collar 77 matched with the elastic wave strips 78 can play a role in arc fitting at the two ends, because the collar 77 is in an arc shape, the collar 77 is fed back by the axial force of the soil body obviously, and in the stirring process, the equal flow velocity of the soil body in the radial direction of the steel sleeve 2 cannot be ensured, so that the feedback force of the soil body to the third blade group 65 is possibly uneven, and the axial force of the third blade group 65 can generate torsion action on the third blade group 65 due to the existence of mud balls and slurry in the soil body, and the collar 77 arranged on the arc surface can offset the rigid torsion of the axial torsion to the third blade group 65 due to the cooperation of the elastic wave strips 78, so that the service life of the third blade group 65 is prolonged; when the third blade group 65 slides up and down to the limit, the third blade group is reset under the elastic force of the elastic wave strip 78, so that the third blade group has a reliable axial stirring effect, and the stirring efficiency can be greatly improved.
In the case of example 2,
A method for constructing a stirring pile based on the soil micro-disturbance deep stirring device according to any one of the above claims, wherein the flow steps are as shown in fig. 1, and the method comprises the following steps:
A. Carrying out ground hardening treatment on the construction area; cement hardening treatment is carried out on the ground needing to be drilled in the construction site;
B. Positioning the center of a drilling hole;
C. The construction machine 1 is connected with a steel sleeve 2, and the steel sleeve is screwed into soil; the construction machine 1 is adjusted at the drilling position and a construction tool of the steel sleeve 2 is installed, as shown in fig. 2, the left side of the construction machine 1 is an existing building influence area 3;
D. When the steel sleeve 2 reaches a designated position, the steel sleeve 2 is connected with an external fixing device 4 through an external fixing piece, so that the fixing of the steel sleeve 2 is completed;
E. The construction machine 1 is separated from the connection member, the connection member is separated from the steel sleeve 2, and the drill pipe 61 is connected to the construction machine 1 through the connection assembly, as shown in fig. 3; the drill pipe 61 is sprayed from the spraying opening 67 to perform deep mixing pile construction operation to form an IMS construction pile forming 7, as shown in figure 4;
F. and (3) circulating the steps A to E until the whole construction is completed.
Claims (5)
1. The utility model provides a soil body perturbation moves deep agitating unit, including construction machinery, characterized by, still include steel sleeve and perturbation moves deep agitating bit that can connect construction machinery respectively, perturbation moves deep agitating bit setting is inside steel sleeve, steel sleeve outside is equipped with the external mounting that can cooperate fixedly with external fixing device, steel sleeve's upper end can be dismantled and is equipped with the connecting component who connects construction machinery, the blade group includes first blade group, second blade group, third blade group and fourth blade group, first blade group includes a plurality of first blade units that set up around drilling rod axis circumference array, the second blade group includes a plurality of second blade units that set up around drilling rod axis circumference array, fourth blade group includes a plurality of fourth blade units that set up around drilling rod axis circumference array, first blade unit, second blade unit and fourth blade unit all incline with the drilling rod axis to set up, first blade unit and fourth blade unit correspond parallel arrangement, there is the contained angle between second blade unit and the first blade unit; the third blade group comprises a lantern ring and a third blade unit arranged outside the lantern ring, the lantern ring and the drill rod are movably arranged, the upper end and the lower end of the lantern ring are respectively provided with an elastic wave strip, and the outer end of the elastic wave strip is provided with a connecting ring; the first blade group, the second blade group and the fourth blade group are fixedly connected with a protection steel shell, the third blade group and the protection steel shell are arranged in a separated mode, the micro-disturbance deep stirring drill bit comprises a drill rod, a connecting component matched with construction machinery is arranged at the upper end of the drill rod, a plurality of blade groups are arranged on the drill rod, and the protection steel shell is arranged outside the blade groups; the lower end of the drill rod is provided with a pointed end and a guniting port, the shape of the lantern ring is a cambered surface shape, the two ends of the lantern ring are in sliding fit with the drill rod, the end part of the lantern ring is in circular transition with the elastic wavy strips, the two ends of the lantern ring are respectively provided with a plurality of elastic wavy strips, the plurality of elastic wavy strips are arranged in an array around the circumference of the axis of the lantern ring, and a reinforcing ring is arranged outside the end part of the lantern ring; the inside of the lantern ring and the side surface of the drill rod are arranged in a clearance way.
2. The soil body perturbation deep stirring device of claim 1, wherein the lower end of the protective steel shell is provided with cutting saw teeth.
3. The soil body perturbation deep stirring device of claim 1, wherein the connecting component comprises a first bolt and a locking jack arranged on the first bolt, a rotary platform and a rotary disc are arranged at the lower end of the first bolt, and engaging saw teeth matched with the upper end of the steel sleeve are arranged at the lower side of the rotary disc.
4. The soil micro-disturbance deep stirring device according to claim 3, wherein the connecting assembly comprises a second bolt arranged at the upper end of the drill rod, and a fixed jack is arranged on the second bolt.
5. The soil body perturbation deep stirring device of claim 1, wherein the external fixing piece is provided with a plurality of symmetrically arranged external fixing pieces outside the steel sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111205135.8A CN114875900B (en) | 2021-10-15 | 2021-10-15 | Soil micro-disturbance deep stirring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111205135.8A CN114875900B (en) | 2021-10-15 | 2021-10-15 | Soil micro-disturbance deep stirring device |
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| CN114875900A CN114875900A (en) | 2022-08-09 |
| CN114875900B true CN114875900B (en) | 2024-05-03 |
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| CN103939020A (en) * | 2014-04-30 | 2014-07-23 | 中交天津港湾工程研究院有限公司 | Anti-winding deep mixing pile drill bit |
| CN106368214A (en) * | 2016-11-17 | 2017-02-01 | 安徽理工大学 | Pile forming operation method for protection barrel type cement soil mixing pile |
| CN110725305A (en) * | 2019-10-31 | 2020-01-24 | 上海长凯岩土工程有限公司 | Construction method for improving bearing capacity of oblique steel pipe pile |
| CN111455978A (en) * | 2020-05-14 | 2020-07-28 | 东莞市华科建筑科技有限公司 | Pile forming method for section steel cement-soil stirring wall in pebble bed |
| CN211312502U (en) * | 2019-11-08 | 2020-08-21 | 安徽太基建设工程股份有限公司 | Quick assembly disassembly's rich water gravel layer triaxial stirring stake drill bit structure |
| CN216689372U (en) * | 2021-10-15 | 2022-06-07 | 浙江理工大学 | Deep agitating unit of soil body perturbation |
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2021
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| CN110725305A (en) * | 2019-10-31 | 2020-01-24 | 上海长凯岩土工程有限公司 | Construction method for improving bearing capacity of oblique steel pipe pile |
| CN211312502U (en) * | 2019-11-08 | 2020-08-21 | 安徽太基建设工程股份有限公司 | Quick assembly disassembly's rich water gravel layer triaxial stirring stake drill bit structure |
| CN111455978A (en) * | 2020-05-14 | 2020-07-28 | 东莞市华科建筑科技有限公司 | Pile forming method for section steel cement-soil stirring wall in pebble bed |
| CN216689372U (en) * | 2021-10-15 | 2022-06-07 | 浙江理工大学 | Deep agitating unit of soil body perturbation |
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