CN112144519B - Drilling tool, cement-soil mixing pile sinking all-in-one machine and construction method of composite pile - Google Patents
Drilling tool, cement-soil mixing pile sinking all-in-one machine and construction method of composite pile Download PDFInfo
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- CN112144519B CN112144519B CN201910566577.1A CN201910566577A CN112144519B CN 112144519 B CN112144519 B CN 112144519B CN 201910566577 A CN201910566577 A CN 201910566577A CN 112144519 B CN112144519 B CN 112144519B
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- 238000005553 drilling Methods 0.000 title claims abstract description 127
- 239000002689 soil Substances 0.000 title claims abstract description 42
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 238000002156 mixing Methods 0.000 title claims description 19
- 238000003756 stirring Methods 0.000 claims abstract description 110
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 5
- 239000011440 grout Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 19
- 239000004570 mortar (masonry) Substances 0.000 description 12
- 210000000078 claw Anatomy 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000004567 concrete Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- 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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Structural Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paleontology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a drilling tool, which comprises a power device for providing power for the drilling tool, wherein the drilling tool is provided with a containing part of a precast pile, the drilling tool is also provided with a mounting seat positioned below the containing part, the mounting seat is provided with a bearing surface for bearing the precast pile, and the precast pile can move along with the drilling tool in the drilling process. Compared with the prior art, the drilling tool has the advantages that: the prefabricated pile can sink along with the drilling tool by arranging the accommodating part of the prefabricated pile on the drilling tool and arranging the bearing surface for bearing the bottom of the prefabricated pile on the mounting seat, so that the cast-in-place pile is not required to be constructed by a cast-in-place pile machine firstly, and then the prefabricated pile is planted on the pile body of the cast-in-place pile by a pile planting machine. The invention also discloses a cement soil stirring pile sinking all-in-one machine and a construction method of the composite pile.
Description
Technical Field
The invention belongs to the technical field of buildings, and particularly relates to a drilling tool, a cement soil stirring pile sinking all-in-one machine and a construction method of a composite pile.
Background
In the field of construction, various performances of foundations are directly related to the safety and stability of the whole superstructure, and soil improvement is required on foundations such as silt, mucky soil, cohesive soil, silt soil, sandy soil and artificial filling which are weak and cannot obtain enough bearing force.
The composite pile is formed by cast-in-place piles and precast piles through composite construction and has complementary reinforcing effect, and can be used as a vertical reinforcement of the foundation. At present, the construction process of the composite pile is roughly as follows: the cast-in-place pile is firstly constructed in the soft soil foundation, when the cast-in-place pile is not hardened, the precast pile is driven on the pile body of the cast-in-place pile, and the construction of the precast pile is preferably carried out within 6 hours after the construction of the cast-in-place pile.
The construction process shows that the construction method needs two steps, two times of construction, equipment needs to be replaced in the construction process, the original cast-in-place pile machine needs to be removed, and then the pile planting machine needs to be placed, so that the machine position conversion can be completed in a long time, and therefore the defects of long construction period and low operation efficiency exist in the conventional construction method.
Disclosure of Invention
The invention aims to provide a drilling tool, a cement-soil stirring pile sinking all-in-one machine and a construction method of a composite pile, aiming at the technical problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a drilling tool, includes the power device that is used for providing power to the drilling tool, and the drilling tool is formed with the portion of holding of precast pile, and the drilling tool still is equipped with the mount pad that is located the portion of holding below, and the mount pad is equipped with the loading face that is used for bearing the precast pile, and at the drilling in-process, the precast pile can be followed the drilling tool and marchd together.
Further, the drilling tool comprises at least one drill rod penetrating through the mounting seat, the central axis of the drill rod is parallel to the central axis of the precast pile, and the accommodating part is formed by combining the drill rod and the mounting seat.
Furthermore, the rod body of drilling rod is equipped with drill point, rotating vane and a plurality of main stirring vane, and the lower tip of the rod body is located to the drill point, and rotating vane locates on the body of rod periphery wall and be close to the drill point spirally, and main stirring vane is located rotating vane's top, and main stirring vane's radial length value is 0.51 times to 0.99 times of two adjacent drilling rod interval values.
Furthermore, the rod body of the drill rod is connected with a power device through a sliding sleeve shell, the other end of the connecting shaft sleeve is connected with a connecting shaft sleeve, a plurality of auxiliary stirring blades are arranged on the peripheral wall of the connecting shaft sleeve, and the auxiliary stirring blades are arranged on the circumferential side wall of the connecting shaft sleeve.
Furthermore, the drilling tool also comprises a main drilling rod and at least one auxiliary drilling rod, the auxiliary drilling rod penetrates through the mounting seat, and the accommodating part is surrounded by the mounting seat and the auxiliary drilling rod extending out of the upper part of the mounting seat.
Furthermore, the main drill rod is arranged on the lower surface of the mounting seat, a main drill tip, a rotating blade and a plurality of first stirring blades are arranged on a main drill rod body of the main drill rod, the main drill tip is arranged at the lower end part of the main drill rod body, and the rotating blade is spirally arranged on the peripheral wall of the outer part of the main drill rod body and is close to the main drill tip; the first stirring blade is positioned above the rotating blade; and an auxiliary drill point and a plurality of second stirring blades are arranged on the auxiliary drill rod body of the auxiliary drill rod, the auxiliary drill point is arranged at the lower end part of the auxiliary drill rod body, and the second stirring blades are arranged on the peripheral wall of the auxiliary drill rod body and are close to the auxiliary drill point.
Furthermore, the auxiliary drill rod body is connected with a connecting shaft sleeve through a sliding sleeve shell, the other end of the connecting shaft sleeve is provided with a power device for providing power for the auxiliary drill rod, and the peripheral wall of the connecting shaft sleeve is provided with a plurality of third stirring blades.
Furthermore, the mounting seat comprises an upper mounting seat and a lower mounting seat, the upper mounting seat is provided with a through hole for the precast pile to pass through, the upper mounting seat and the lower mounting seat are detachably connected through at least 2 connecting devices, and when only one side of the mounting seat is connected through the connecting devices, the lower mounting seat can rotate relative to the upper mounting seat; the mounting base is further provided with a lifting device, and the lifting device is arranged close to one of the connecting devices.
Compared with the prior art, the drilling tool has the advantages that: the accommodating part of the precast pile is arranged on the drilling tool, and the bearing surface for bearing the bottom of the precast pile is arranged on the mounting seat, so that the precast pile can sink along with the drilling tool, a cast-in-place pile is not required to be constructed by a cast-in-place pile machine, and the precast pile is planted on a pile body of the cast-in-place pile by a pile planting machine.
The cement-soil mixing pile sinking all-in-one machine comprises a pile machine platform which is used for running on the ground and a pile clamping and moving mechanism which is used for clamping and moving a precast pile, wherein the precast pile is arranged on the accommodating part of a drilling tool and arranged on the bearing surface of the drilling tool.
Compared with the prior art, the soil cement stirring pile sinking all-in-one machine has the advantages that: the cement soil stirring pile sinking all-in-one machine takes the precast pile clamped by the pile clamping and moving mechanism as a drill rod, and then uses a drilling tool at the lower end of the precast pile to drill, spray and stir, so that the precast pile can move to the soil body below along with the drilling tool, and two sets of construction equipment of a cast-in-place pile machine and a pile planting machine are not required to be equipped.
A construction method of a composite pile comprises the following steps: the precast pile is clasped to the cement soil mixing pile sinking all-in-one machine which is well positioned, and is borne on the bearing surface of the drilling tool; and starting the drilling tool to drill, spray and stir so that the precast pile and the drilling tool sink together.
Compared with the prior art, the construction method of the composite pile has the advantages that: the top end of the precast pile is embraced on a pile clamping and moving mechanism of the cement soil mixing pile sinking all-in-one machine, the bottom end of the precast pile is installed into a containing part of the drilling tool and is borne on a bearing surface of the drilling tool, the precast pile can sink along with the drilling tool in the drilling process, the precast pile is driven into the drilling tool while the drilling tool forms a cast-in-place pile, construction equipment does not need to be replaced, the construction period is shortened, the construction process of the composite pile can be simple, and the operation efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a schematic view showing the construction of a drilling tool according to a first embodiment of the present invention;
FIG. 2 is a schematic view showing the construction of a drilling tool in a second embodiment of the present invention;
FIG. 3 is a schematic view showing the construction of a drilling tool in a third embodiment of the present invention;
FIG. 4 is an enlarged view taken at circle A in FIG. 3;
FIG. 5 is a schematic view showing the structure of the lower half of a drilling tool in a third embodiment of the present invention;
FIG. 6 is a schematic view of the upper half of a third embodiment of the drilling tool of the present invention;
FIG. 7 is a schematic structural diagram of the soil cement mixing pile sinking all-in-one machine in the embodiment of the invention;
FIG. 8 is a schematic perspective view of an alternative embodiment of the soil cement mixing pile-sinking machine of the present invention;
FIG. 9 is an enlarged view taken at circle B in FIG. 8;
fig. 10 is a flowchart of a construction method of a composite pile in the embodiment of the present invention.
In the drawings:
in a first embodiment:
1. a mounting seat; 2. a drill stem; 21. a rod body; 22. drilling a tip; 23. a rotating blade; 23a, drilling teeth; 24. a main stirring blade; 25. a power head; 26. connecting the shaft sleeve; 27. a slide case; 28. an auxiliary stirring blade; 29. a guniting port; 3. prefabricating a pile; 4. an accommodating portion.
In a second embodiment:
1. a mounting seat; 5. a main drill rod; 51. a main drill rod body; 52. a main drill point; 53. a main rotating blade; 53a, drilling teeth; 54. a first stirring blade; 6. an auxiliary drill rod; 61. a sub drill rod body; 62. a secondary drill point; 64. a second stirring blade; 65. a power head; 66. connecting the shaft sleeve; 67. a slide case; 68. a third stirring blade; 3. prefabricating a pile; 4. an accommodating portion.
In the third embodiment:
1. a mounting seat; 11. an upper mounting seat; 11a, a through hole; 11b, an upper bracket; 11c, upper bracket holes; 12. a lower mounting seat; 12a, a lower bracket; 12b, lower bracket holes; 13. a connecting device; 13a, a hydraulic cylinder; 13b, a piston rod; 14. a hoisting device; 14a, a hook; 14b, a boom; 14c, a stopper portion; 3. prefabricating a pile; 4. an accommodating portion.
The cement soil stirring pile sinking integrated machine comprises:
100. a pile machine platform; 200. a column; 300. a pile gripping and moving mechanism; 301. a pressure holding box; 302. a power cylinder; 302a, a telescopic rod; 302b, a connector; 303. a vertical guide rail; 304. a deviation rectifying base; 305. a clamping device; 305a, a connecting plate; 305b, clamping claws.
Detailed Description
In order to facilitate understanding of the technical solutions of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
The invention discloses a drilling tool, which comprises the following 3 specific embodiments:
< first embodiment >
As shown in fig. 1, the drilling tool includes a mounting seat 1 and at least one drill rod 2, in this embodiment, the number of the drill rods 2 is set to 4, the drill rods 2 vertically pass through the mounting seat 1, the drill rods 2 and the mounting seat 1 form a receiving portion 4 for receiving a precast pile 3, the bottom of the precast pile 3 passes through the receiving portion 4, and then the precast pile 3 is fixedly or non-fixedly carried on the upper surface of the mounting seat 1, the upper surface is a bearing surface of the precast pile 3, and the precast pile 3 can travel along with the drilling tool.
In this embodiment, when adopting the unfixed mode of bearing, can set up on the upper surface of mount pad 1 with 3 bottom matched with holes of precast pile, for example rectangular hole etc. carry out circumference spacing to precast pile 3, if precast pile 3 wholly is the cylinder structure, can install non-circular board in precast pile 3's bottom, prevent to advance and bore in-process precast pile 3 and move on the loading end and take place the condition of bumping drilling rod 2.
The mounting seat 1 is of a flat plate structure, and the mounting seat 1 is provided with a hole for the rod body 21 of the drill rod 2 to pass through.
In this embodiment, each main stirring blade group may be provided with one main stirring blade 24, two main stirring blades 24, or even more than three main stirring blades 24, and the radial length value of the main stirring blade is 0.51 to 0.99 times of the distance value between two adjacent drill rods; similarly, each auxiliary stirring blade group can be provided with one auxiliary stirring blade 28, two auxiliary stirring blades 28, or even more than three auxiliary stirring blades 28; during rotation, the main stirring blades 24 on a drill rod 2 do not interfere with the adjacent drill rod 2 and the main stirring blades 24 on the adjacent drill rod 2. Because the main stirring blade 24 and the auxiliary stirring blade 28 are obliquely arranged, the edges of the main stirring blade 24 and the auxiliary stirring blade 28 lead the tangential mixture in the drilling advancing and retreating processes, and the traveling path resistance is reduced.
The rod body 21 of the drill rod 2 is of a hollow structure, and the rod body 21 is also provided with a mortar spraying port 29 for spraying concrete mortar introduced from the outside to a soil body after cutting.
The precast pile 3 is a hollow pile or a solid pile formed by concrete, steel, cement, fly ash, gravel mixture and other materials.
The accommodating part 4 is defined by the connecting shaft sleeve 26 and the mounting seat 1, and the lower end of the precast pile 3 passes through the accommodating part 4 and is mounted on the upper surface of the mounting seat 1.
In the present embodiment, the precast pile 3 is driven with the drill, and when reaching a predetermined depth, the drill cannot be withdrawn, so that the drill can only be discarded in the soil.
< second embodiment >
In this embodiment, the same or similar reference numerals are given to the same portions as those in the first embodiment, and the same description is omitted.
As shown in fig. 2, the present embodiment provides a drill further having the structure as follows, in comparison with the first embodiment: the drilling tool comprises a mounting seat 1, a main drilling rod 5 and at least one auxiliary drilling rod 6, wherein the number of the auxiliary drilling rods 6 is 4, the auxiliary drilling rods 6 vertically penetrate through the mounting seat 1, the upper portions of the auxiliary drilling rods 6 and the mounting seat 1 form accommodating portions 4 for accommodating precast piles 3, the precast piles 3 are arranged in the accommodating portions 4, the bottoms of the precast piles 3 are fixedly or non-fixedly connected to the upper surface of the mounting seat 1, and the precast piles 3 can travel along with the drilling tool.
The mounting seat 1 is of a flat plate structure, and the mounting seat 1 is provided with a hole for the auxiliary drill rod body 61 of the auxiliary drill rod 6 to pass through.
The main drill rod 5 is arranged on the lower surface of the mounting seat 1, the main drill rod 5 is provided with a main drill rod body 51, a main drill tip 52, a main rotating blade 53 and a plurality of first stirring blades 54, the main drill tip 52 is arranged at the lower end part of the main drill rod body 51, and the main rotating blade 53 is spirally arranged on the outer peripheral wall of the main drill rod body 51 and is close to the main drill tip 52; the first stirring blades 54 are positioned above the main rotating blade 53, and on the same height of the main drill rod body 51, the number of the first stirring blades 54 is 3, the 3 first stirring blades 54 are obliquely arranged towards different directions to realize sufficient stirring, the 3 first stirring blades 54 form a group of stirring blade groups, and the 3 stirring blade groups are arranged in 3 groups and distributed on different heights of the main drill rod body 51; the lowermost end of the main rotating blade 53 is also provided with a plurality of drilling teeth 53a, and the drilling teeth 53a can improve the rock breaking and cutting capability of the drilling tool.
The main drill rod body 51 is of a hollow structure, and the main drill rod body 51 is also provided with a radially outward extending mortar spraying port for spraying concrete mortar introduced from the outside into surrounding soil; preferably, the injection direction of the grout injection port is downward, the grout injection port is of a linear flaring structure, and the injection range of the grout injection port covers the edge from the center of the main drill rod body 51 to the maximum stirring range of the drilling tool; the top of the main drill rod 5 is provided with a power device, one end of the power device is fixedly arranged on the lower surface of the mounting seat 1, and the main drill rod 5 can also be driven to rotate by the auxiliary drill rod 6 through an internal gear.
The auxiliary drill rod 6 is provided with an auxiliary drill tip 62 and a plurality of second stirring blades 64, the auxiliary drill tip 62 is arranged at the lower end part of the auxiliary drill rod body 61, the second stirring blades 64 are vertically arranged on the circumferential side wall of the auxiliary drill rod body 61 above the auxiliary drill tip 62, in addition, on the same height of the auxiliary drill rod body 61, the number of the second stirring blades 64 is 3, 3 second stirring blades 64 are obliquely arranged towards different directions to realize sufficient stirring, a group of second stirring blade groups is formed by the 3 second stirring blades 64, the number of the second stirring blade groups is 3, and the second stirring blade groups are distributed on different heights of the auxiliary drill rod body 61.
The auxiliary drill rod 6 is further provided with a power head 65 and a connecting shaft sleeve 66, the power head 65 is arranged at one end of the connecting shaft sleeve 66 and used for providing power for the auxiliary drill rod 6, the auxiliary drill rod body 61 is connected to the other end of the connecting shaft sleeve 66 through a sliding sleeve shell 67, a plurality of third stirring blades 68 are arranged on the axial side wall of the connecting shaft sleeve 66, the third stirring blades 68 are vertically arranged on the circumferential side wall of the connecting shaft sleeve 66, in addition, on the same height of the connecting shaft sleeve 66, the third stirring blades 68 are arranged in a number of 3, 3 third stirring blades 68 are obliquely arranged towards different directions to fully stir, a third stirring blade group is formed by the 3 third stirring blades 68, 3 groups are arranged in a number of 3, and the third stirring blades are distributed on different heights of the connecting shaft sleeve 26.
In this embodiment, the precast pile 3 is driven with the drill, and when reaching a predetermined depth, the drill cannot be withdrawn, so that the drill can be discarded in the soil.
< third embodiment >
In this embodiment, the same or similar reference numerals are given to the same portions as those in the first and second embodiments, and the same description is omitted.
As shown in fig. 3 to 6, the present embodiment provides a drilling tool having the following structure, with respect to the second embodiment:
the mounting seat 1 comprises an upper mounting seat 11 and a lower mounting seat 12, the upper mounting seat 11 and the lower mounting seat 12 are of square flat plate structures, the upper mounting seat 11 and the lower mounting seat 12 are detachably connected through a plurality of connecting devices 13 on the side surfaces, at least 2 connecting devices 13 are arranged, and in order to simplify the structure, 2 connecting devices 13,2 connecting devices 13 are arranged on two opposite side edges of the upper mounting seat 11 and the lower mounting seat 12 respectively;
the upper mounting seat 11 is provided with a through hole 11a through which the precast pile 3 passes, the precast pile 3 passes through the through hole 11a and then abuts against the upper surface of the lower mounting seat 12, and the precast pile 3 can move downwards along with the mounting seat 1.
A pair of upper brackets 11b are respectively arranged on two opposite side edges of the upper mounting seat 11, and the upper brackets 11b are provided with upper bracket holes 11c; the lower mount 12 is provided with a pair of lower brackets 12a on two opposite sides corresponding to the upper mount 11, respectively, and the lower brackets 12a are provided with lower bracket holes 12b. After the upper mounting seat 11 is matched with the lower mounting seat 12, the corresponding upper bracket hole 11c and the lower bracket hole 12b are connected through the connecting device 13, so that the upper mounting seat 11 and the lower mounting seat 12 are connected and fixed.
Specifically, the connecting device 13 includes 2 oppositely disposed hydraulic cylinders 13a, the hydraulic cylinders 13a are fixedly mounted on the mounting base 1, and piston rods 13b of the hydraulic cylinders 13a can pass through upper bracket holes 11c of the corresponding upper brackets 11b and lower bracket holes 12b of the corresponding lower brackets 12a, so as to fix the mounting base 11 and the lower mounting base 12.
The mounting base 1 is further provided with a lifting device 14, and the lifting device 14 is arranged at a non-central position of the mounting base 1. In this embodiment, the hoisting device 14 is disposed near one of the connection devices 13, the hoisting device 14 is used for hoisting the drilling tool, the hoisting device 14 is provided with a hook 14a and a boom 14b, a hole of the hook 14a is used for a hoisting rope to penetrate, the hook 14a is connected to the upper end of the boom 14b, the lower end of the boom 14b is provided with a stop portion 14c, the boom 14b penetrates through the upper mounting seat 11 and the lower mounting seat 12, and an external crane or a winch hoists the drilling tool through the hoisting rope. In the embodiment, the lifting device 14 is an integral structure, and a suspension rod 14b on the lifting device 14 penetrates through the mounting base 1 and then is bent into a stopping part 14c at the bottom; of course, the lifting device 14 may be a split connection structure.
When the precast pile 3 is supported on the upper surface of the mounting base 1 in a non-fixed manner and a drilling tool needs to be hoisted, the piston rods 13b of the pair of hydraulic cylinders 13a far away from the hoisting device 14 retract from the upper bracket holes 11c and the lower bracket holes 12b, the piston rods 13b of the pair of hydraulic cylinders 13a near the hoisting device 14 of the upper mounting base 11 and the lower mounting base 12 do not retract, and accordingly, one end of the lower mounting base 12 far away from the hoisting device 14 rotates downwards around the pair of hydraulic cylinders 13a which do not retract relative to the upper mounting base 11 under the action of the gravity of the precast pile 3, the precast pile 3 falls downwards when the mounting base 12 does not play a supporting role, and an external crane or winch pulls the drilling tool upwards, so that the drilling tool is recovered.
In this embodiment, the precast pile 3 is driven by the drilling tool, and when the preset depth is reached, the drilling tool can be pulled up by an external crane or winch, so that the drilling tool can be recovered and reused.
The invention also discloses a concrete embodiment of the soil cement mixing pile sinking all-in-one machine, as shown in fig. 7-9, the soil cement mixing pile sinking all-in-one machine comprises a pile machine platform 100, a vertical column 200 and a pile clamping and moving mechanism 300, wherein the pile machine platform 100 is used for running on the ground, the axial direction of the vertical column 200 in fig. 7, 8 and 9 is defined as vertical direction, the vertical column 200 is vertically arranged on the upper surface of the pile machine platform 100, the pile clamping and moving mechanism 300 is arranged on one side of the vertical column 200 in parallel, the pile clamping and moving mechanism 300 is used for clamping the precast pile 3 and can run along the length direction of the vertical column 200, the precast pile 3 is inserted into the accommodating part of the drilling tool, and the bottom surface of the precast pile 3 is abutted against the upper surface of the mounting seat 1.
Pile presss from both sides moves mechanism 300 and includes embracing pressure case 301 and power cylinder 302, embraces pressure case 301 and installs in one side of stake machine platform 100 for embrace and press the stake downwards after pressing precast pile 3, power cylinder 302 is used for driving to embrace pressure case 301 along vertical movement, and the upper end of power cylinder 302 passes through connecting piece 302b fixed mounting in the top of stand 200, and the telescopic link 302a of power cylinder 302 is on a parallel with the setting of stand 200 and with embrace pressure case 301 and be connected fixedly just.
The pile clamping and moving mechanism 300 is further provided with a vertical guide rail 303, a deviation rectifying seat 304 and a clamping device 305, wherein the vertical guide rail 303 is arranged in parallel to the upright column 200 and is fixedly connected on the upright column 200 through a plurality of groups of connecting frames 33a, and the vertical guide rail 303 is also vertically arranged on the upper surface of the pile machine platform 100; the deviation rectifying base 304 is slidably mounted on the vertical guide rail 303, the clamping device 305 is fixedly mounted on the deviation rectifying base 304 through a connecting plate 305a arranged at the top of the clamping device 305, the clamping device 305 is further provided with a clamping claw 305b for clamping the upper end of the precast pile 3, the clamping claw 305b is arranged on the lower end face of the connecting plate 305a, the pile clamping and moving mechanism 300 ensures the verticality of the precast pile 3 in the vertical movement through the clamping device 305, the deviation rectifying base 304 connected with the connecting plate 305a of the clamping device 305 and the vertical guide rail 303 for guiding the deviation rectifying base 304 to move, the precast pile 3 is prevented from being inclined and colliding with a drill rod on the drill, and the drill at the bottom end of the precast pile 3 is used for drilling, spraying and stirring.
The invention also discloses a specific embodiment of the construction method of the composite pile, which comprises the following steps as shown in fig. 10:
the method comprises the following steps: pile placing sites: according to design requirements, carrying out field measurement, determining a good piling position and marking;
step two: taking the cement soil stirring pile sinking integrated machine in place, and preparing mortar: stably positioning the soil cement stirring pile sinking all-in-one machine at a piling position; mixing mortar according to design requirements, sieving the mixed mortar, and pouring the sieved mixed mortar into an external aggregate bin;
step three: the precast pile is embraced in the well-in-place cement soil stirring pile sinking all-in-one machine and is borne on the bearing surface of the drilling tool: hoisting the top end of the precast pile 3 on a pile clamping and moving mechanism 300 of the cement soil mixing and pile sinking integrated machine, enabling a clamping claw 305b to clamp the top end of the precast pile 3, enabling the lower end of the precast pile 3 to penetrate through a holding and pressing box 301, then connecting the lower end of the precast pile into a containing part 4 of a drilling tool, bearing the lower end of the precast pile 3 on the upper surface of a mounting seat 1 of the drilling tool, namely the bearing surface of the drilling tool, and conveying mortar in a collecting hopper into a rod body through a conveying pipe;
step four, starting the drilling tool to drill, spray and stir so that the precast pile and the drilling tool sink together: a. starting a drilling tool and a soil cement mixing pile sinking integrated machine, clamping the top end of a precast pile 3 by a clamping device 305, driving an embracing and pressing box 301 to embrace and press the precast pile 3 downwards by a power cylinder 302, and moving downwards along a vertical guide rail 303 through a deviation correcting seat 304, wherein the vertical guide rail 303, the deviation correcting seat 304 and the clamping device 305 are used for ensuring the verticality of the precast pile 3 when moving downwards;
b. the precast pile 3 presses a drilling tool downwards, a power head 25 of a drill rod 2 of the drilling tool transmits power to a rod body 21, the rod body 21 drives a drill point 22, a rotating blade 23, a main stirring blade 24 and an auxiliary stirring blade 28 on the rod body 21, the drill point 22 and the rotating blade 23 rotate to drill downwards, a mortar spraying port 29 sprays mortar to surrounding soil bodies, the main stirring blade 24 and the auxiliary stirring blade 28 stir the surrounding soil bodies sprayed with the mortar, and the precast pile 3 sinks downwards along with the downward drilling of the drilling tool until the precast pile 3 completely enters the soil bodies below;
when the length of the precast pile 3 does not meet the design requirement, a pile splicing step c of a plurality of piles is also needed: before the precast pile 3 completely sinks to the soil body below, suspending the drilling tool and the cement-soil mixing pile sinking all-in-one machine, hoisting a precast pile 3 on a pile clamping and moving mechanism 300 of the cement-soil mixing pile sinking all-in-one machine, clamping the upper end of the precast pile 3 by a clamping claw 305b, connecting the lower end of the precast pile 3 to the upper end of the precast pile 3 below through welding, mechanical connection or other modes, then starting the drilling tool and the cement-soil mixing pile sinking all-in-one machine again, and repeating the actions of drilling, slurry spraying, stirring, sinking of the precast pile 3 and the like until the length of the spliced precast pile 3 meets the design requirement;
step five: recovering or abandoning the drilling tool, and shifting: and (3) recovering the drilling tool or giving up the drilling tool by the cement soil stirring pile sinking all-in-one machine, forming the abandoned drilling tool in the composite pile, moving the cement soil stirring pile sinking all-in-one machine, and repeating the steps I, II, III, IV and V to construct the next composite pile.
The above is only a preferred embodiment of the present invention, and the scope of the present invention is defined by the appended claims, and several modifications and amendments made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as the scope of the present invention.
Although the terms are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (4)
1. A drilling tool comprises a power device for providing power for the drilling tool, and is characterized in that the drilling tool is provided with a containing part for a precast pile, a mounting seat is arranged below the containing part, the mounting seat is provided with a bearing surface for bearing the precast pile, and the precast pile can move along with the drilling tool in the drilling process; the drilling tool comprises at least four drill rods penetrating through the mounting seat, the central axis of each drill rod is parallel to the central axis of the precast pile, and the accommodating part is surrounded by the mounting seat and the drill rods extending out of the upper part of the mounting seat;
the drill rod body of the drill rod is provided with a drill tip, a rotating blade and a plurality of main stirring blades, the drill tip is arranged at the lower end part of the drill rod body, the rotating blade is spirally arranged on the outer peripheral wall of the drill rod body and is close to the drill tip, the main stirring blades are positioned above the rotating blades, and the radial length value of the main stirring blades is 0.51-0.99 times of the distance value between two adjacent drill rods;
the rod body of the drill rod is also connected with a connecting shaft sleeve through a sliding sleeve shell, the other end of the connecting shaft sleeve is provided with a power device, the outer peripheral wall of the connecting shaft sleeve is provided with a plurality of auxiliary stirring blades, and the auxiliary stirring blades are arranged on the peripheral side wall of the connecting shaft sleeve;
the rod body of drilling rod is hollow structure, and the rod body of drilling rod still is equipped with the whitewashing mouth.
2. A drilling tool comprises a power device for providing power for the drilling tool, and is characterized in that the drilling tool is provided with a containing part for a precast pile, a mounting seat is arranged below the containing part and provided with a bearing surface for bearing the precast pile, the precast pile can move along with the drilling tool in the drilling process, the drilling tool further comprises a main drilling rod and at least four auxiliary drilling rods, the auxiliary drilling rods penetrate through the mounting seat, and the containing part is defined by the mounting seat and the auxiliary drilling rods extending out of the upper part of the mounting seat;
the main drill rod is arranged on the lower surface of the mounting seat, a main drill tip, a rotating blade and a plurality of first stirring blades are arranged on a main drill rod body of the main drill rod, the main drill tip is arranged at the lower end part of the main drill rod body, and the rotating blade is spirally arranged on the peripheral wall of the main drill rod body and is close to the main drill tip; the first stirring blade is positioned above the rotating blade;
an auxiliary drill point and a plurality of second stirring blades are arranged on the auxiliary drill rod body of the auxiliary drill rod, the auxiliary drill point is arranged at the lower end part of the auxiliary drill rod body, and the second stirring blades are arranged on the outer peripheral wall of the auxiliary drill rod body and are close to the auxiliary drill point;
the auxiliary drill rod body is also connected with a connecting shaft sleeve through a sliding sleeve shell, the other end of the connecting shaft sleeve is provided with a power device for providing power for the auxiliary drill rod, and the outer peripheral wall of the connecting shaft sleeve is provided with a plurality of third stirring blades;
the main drilling rod body is of a hollow structure, and the main drilling rod body is also provided with a grout spraying port extending outwards in the radial direction.
3. An integrated cement-soil mixing and pile sinking machine, which comprises a pile machine platform for running on the ground and a pile clamping and moving mechanism for clamping and moving a precast pile, wherein the precast pile is arranged in the accommodating part of a drilling tool according to any one of claims 1 to 2 and is supported on the bearing surface of the drilling tool.
4. The construction method of the composite pile is characterized by comprising the following steps:
the precast pile is clasped on the in-place cement-soil mixing pile-sinking all-in-one machine as claimed in claim 3 and is borne on the bearing surface of the drilling tool;
and starting the drilling tool to drill, spray and stir so that the precast pile and the drilling tool sink together.
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| CN201910566577.1A CN112144519B (en) | 2019-06-27 | 2019-06-27 | Drilling tool, cement-soil mixing pile sinking all-in-one machine and construction method of composite pile |
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| CN201910566577.1A CN112144519B (en) | 2019-06-27 | 2019-06-27 | Drilling tool, cement-soil mixing pile sinking all-in-one machine and construction method of composite pile |
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| NL7510980A (en) * | 1975-09-18 | 1977-03-22 | Stade Heinrich | Prodn. of precast concrete pile foundations - using auger to predrill hole for hollow pile passing flushing fluid and filled in situ |
| CN103883260B (en) * | 2014-02-18 | 2016-08-24 | 周兆弟 | Three axle triangle cement mixing drilling rod and construction methods |
| CN106049488A (en) * | 2016-08-11 | 2016-10-26 | 李平 | Cast-in-situ mixing pile with stiffening core and construction method thereof |
| CN106320975B (en) * | 2016-11-01 | 2018-03-30 | 周兆弟 | The drilling rod distributed architecture of piling machine |
| CN108018856A (en) * | 2017-11-30 | 2018-05-11 | 中国冶集团有限公司 | A kind of Novel spiral pile-driving machine and its construction method |
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