CN113309088A - Hole-leading pile-planting equipment and construction method - Google Patents
Hole-leading pile-planting equipment and construction method Download PDFInfo
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- CN113309088A CN113309088A CN202110553345.XA CN202110553345A CN113309088A CN 113309088 A CN113309088 A CN 113309088A CN 202110553345 A CN202110553345 A CN 202110553345A CN 113309088 A CN113309088 A CN 113309088A
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- 238000010276 construction Methods 0.000 title claims abstract description 24
- 239000004568 cement Substances 0.000 claims abstract description 87
- 238000005553 drilling Methods 0.000 claims abstract description 30
- 238000003825 pressing Methods 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 4
- 239000002689 soil Substances 0.000 abstract description 18
- 238000003756 stirring Methods 0.000 abstract description 18
- 239000011440 grout Substances 0.000 abstract description 14
- 238000009435 building construction Methods 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000001965 increasing effect Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 230000002028 premature Effects 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical group C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
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- 230000000087 stabilizing effect Effects 0.000 description 1
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- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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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
- E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
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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
- 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
- E02D7/20—Placing by pressure or pulling power
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
Abstract
The application relates to the field of building construction, in particular to a hole-leading pile-planting device and a construction method. The hole guiding and pile planting equipment comprises a hole guiding mechanism for forming a drilled hole in a construction site and a pile planting mechanism for pressing a preset tubular pile into the drilled hole; the hole guiding mechanism comprises a drill bit, the peripheral face of the drill bit is connected with a main blade, a plurality of branch blades are connected to the surface of the main blade, and the included angle between each branch blade and the corresponding main blade is 30-90 degrees. The construction method of the pilot hole pile planting equipment comprises the steps of construction preparation, drilling and hole forming, cement pile manufacturing, core inserting pile inserting and the like. This application has improved the degree of stirring to grout through mutually supporting of main blade and a blade to make grout self constitute and mix more fully between grout and the soil body granule in the drilling, make grout more homogeneous, and reduced the problem that the grout is local too early to solidify, make the compound stake of cement that finally forms obtain better quality.
Description
Technical Field
The application relates to the field of building construction, in particular to a hole-leading pile-planting device and a construction method.
Background
The engineering pile is a member with a stress function and is mainly used in pile foundation engineering. The tubular pile belongs to one kind of engineering pile, and the application in the building construction field is more and more extensive at present. The tubular pile can transfer the load of an upper building into a deep soil layer with stronger bearing capacity, or compact a softer soil layer to improve the bearing capacity of a foundation, thereby playing a role in improving the stability of the upper building and having important influence on the safety of the building. In the current construction, pile sinking equipment is often adopted to press the pipe piles into the ground. However, in complex strata such as a deep sand layer, a sand gravel layer, a cast-fill layer and the like, the problems of large pile sinking resistance, high pile bursting probability and the like often occur when pipe piles are pressed into the soil by directly adopting pile sinking equipment, so that the use of the pipe piles is influenced.
At present, the above problems are solved by adopting a mode of firstly guiding holes and then implanting the tubular piles in the related art. Firstly, drilling a soil layer by combining a rotary screw and a drill bit to form a drill hole; and then, cement slurry is sprayed into the drill hole, and the drill bit is used for stirring, so that the soil body in the drill hole is mixed with the cement slurry and all components in the cement slurry, and the cement pile is formed. Before the cement soil is initially set, the prefabricated pipe pile is pressed into the formed cement pile in a static pressure or hammering mode to form the cement soil composite pipe pile. Therefore, the purpose of smoothly implanting the tubular pile is achieved, and the bearing capacity of the single pile is improved.
The inventor believes that in the construction process, the stirring of the cement paste is improved, the cement paste can be mixed with soil particles in a drilled hole more fully, the cement paste is more uniform, the problem of local early solidification of the cement paste is reduced, and the cement composite pile has important influence on improving the quality of the cement composite pile.
Disclosure of Invention
In order to improve the stirring to grout to make grout and soil body granule mix more fully, make the inside more homogeneous of grout, and then improve the quality of cement composite pile, this application provides a lead hole stake planting equipment and construction method.
In a first aspect, the application provides a leading hole pile planting equipment adopts following technical scheme:
the hole guiding and pile planting equipment comprises a hole guiding mechanism for forming a drilled hole in a construction site and a pile planting mechanism for pressing a preset tubular pile into the drilled hole;
the hole guiding mechanism comprises a drill bit, the peripheral face of the drill bit is connected with a main blade, a plurality of branch blades are connected to the surface of the main blade, and the included angle between each branch blade and the corresponding main blade is 30-90 degrees.
By adopting the technical scheme, the mixing degree of cement paste is improved by matching the main blade and the branch blades, so that the components in the cement paste are favorably mixed, the cement paste and soil particles in the drilled holes are more sufficiently mixed, the uniformity of the cement paste is improved, the problem of local premature setting of the cement paste is reduced, and the quality of the cement composite pile is improved.
Optionally, a plurality of through holes are formed in the branch blade.
By adopting the technical scheme, part of cement paste can pass through the through hole in the stirring process and be accelerated, so that the irregular movement inside the cement paste is increased, the stirring degree inside the cement paste is favorably increased, the mixing of the components of the cement paste and soil body particles can be further improved, and the quality of the cement composite pile is favorably improved.
Optionally, the main blade is a spiral blade and surrounds the outer circumferential surface of the drill bit; the branch blades are vertically and fixedly connected to the windward blade surface of the main blade, and the length extending direction of the branch blades is parallel to the tangential direction of the main blade.
Through adopting above-mentioned technical scheme, spiral blade bores soil and arranges soil effectually, and is outstanding to the stirring ability of grout. The branch blade is vertically arranged on the windward blade surface of the main blade, and the length direction of the branch blade is parallel to the tangential direction of the main blade; therefore, the stirring of the drill bit for cement paste can be further improved, the quality of the final cement composite pile is improved, and meanwhile, the downward drilling of the drill bit is not hindered.
Optionally, the main blade is a paddle blade, an included angle of 120-150 degrees is formed between the windward blade surface and the rotation plane, and the main blades are provided with a plurality of blades and are uniformly connected to the outer peripheral surface of the drill bit; the branch blades are vertically and fixedly connected to the windward blade surface of the main blade, and the length extension direction of the branch blades is parallel to the length extension direction of the main blade.
By adopting the technical scheme, the paddle type blade is simple to manufacture and has a good stirring effect; vertically erecting the branch blade on the windward blade surface of the main blade, and enabling the length direction of the branch blade to be parallel to the length direction of the main blade; therefore, the uniformity of the interior of cement paste can be further improved, the drilling efficiency can be improved, and the production efficiency is improved.
Optionally, the drill bit is provided with an inner cavity, and the inner cavity is communicated with the outside through a jet hole formed in the drill bit.
By adopting the technical scheme, the cement paste or high-pressure water is injected into the inner cavity of the drill bit and then is sprayed out from the spray hole, so that the cement paste or high-pressure water smoothly enters the drill hole to play a role.
Optionally, the hole guiding mechanism further comprises a drill rod, a drilling power head, a mast, a traction rope, a winch, a material conveying pipe and a movable chassis;
the mast is arranged on the movable chassis, the top end of the mast is provided with a pulley block, one end of the traction rope is connected with a winch arranged on the mast, and the other end of the traction rope is connected with the upper end of the drill rod after bypassing the pulley block;
the drill rod is positioned on the outer side of the movable chassis and is connected with a drilling power head which is arranged on the mast in a sliding manner, the drill rod is driven by the drilling power head to rotate, and the lower end of the drill rod is connected with a drill bit;
the upper end of the drill rod is also communicated with a material conveying pipe.
By adopting the technical scheme, the hole guiding mechanism is reasonable in configuration, and is favorable for finishing the punching operation more smoothly.
Optionally, the mobile chassis further comprises a positioning workstation arranged on the mobile chassis.
Through adopting above-mentioned technical scheme, through the setting of positioning workstation, can realize more accurate location to the accuracy nature of punching has been improved.
Optionally, the pile planting mechanism comprises a crane, a bracket, a lifting plate, a pile pressing oil cylinder and a base;
the crane and the support are respectively arranged on the base, the pile pressing oil cylinder is fixedly connected to the support, and a piston rod of the pile pressing oil cylinder is connected with the lifting plate and drives the lifting plate to lift through the expansion of the piston rod;
seted up first precast tubular pile on the lifter plate and passed the hole, first precast tubular pile passes and sets up precast tubular pile clamp plate in the hole, set up on the base and pass the hole coaxial second precast tubular pile with first precast tubular pile and pass the hole.
Through adopting above-mentioned technical scheme, optimized the structure of planting the stake mechanism to enable to plant the stake mechanism and push into the drilling with precast tubular pile more smoothly.
Optionally, set up the balancing weight on the lifter plate, set up on the balancing weight and pass the hole with first precast tubular pile and pass the hole coaxial setting's third precast tubular pile and pass the hole.
Through adopting above-mentioned technical scheme, can improve the counter weight of lifter plate to can improve the holding down force of lifter plate to precast tubular pile, impress precast tubular pile smoothly in the drilling.
In a second aspect, the application provides a construction method using the above hole-guiding pile-planting equipment, which adopts the following technical scheme:
the construction method adopting the hole guiding and pile planting equipment comprises the following steps:
construction preparation: leveling a construction site and determining a pile position;
drilling to form a hole: after the drill bit is aligned with the pile position, the hole guiding mechanism is started, and the drill bit starts to rotate and drills downwards to form a drilled hole;
manufacturing a cement pile: after the drill bit drills to the designed depth, cement slurry is injected into the drill hole, and the drill bit is lifted and kept to rotate; the cement paste is stirred by matching the main blade and the branch blades;
inserting a core pile: lifting the precast tubular pile to a pile planting mechanism within 3 hours after cement slurry is manufactured; and opening the pile planting mechanism, and pressing the prefabricated pipe pile into the cement pile.
By adopting the technical scheme, the hole guiding mechanism drills at the preset pile position, and cement slurry is added into the drilled hole to manufacture the cement pile. The main blade and the branch blade are matched to fully stir cement paste, so that the quality of the final cement composite pile is improved. And the pile planting mechanism presses the prefabricated pipe pile into the cement pile as a core pile to complete the preparation of the cement composite pile.
In summary, the present application includes at least one of the following beneficial technical effects:
1. this application has improved the degree of stirring to grout through mutually supporting of main blade and a blade to make grout self constitute and mix more fully between grout and the soil body granule in the drilling, make grout more homogeneous, and reduce the problem that the local too early solidification of grout makes the compound stake of cement of final formation obtain better quality.
2. The method comprises the steps that a plurality of through holes are formed in a branch blade; when the branch blade is stirred, part of cement paste passes through the through hole and is accelerated, so that the degree of irregular movement in the cement paste is increased, the degree of stirring the cement paste is improved, the uniformity of the cement paste is improved, and the cement composite pile with high quality is formed finally.
3. The positioning workstation is arranged in the hole guiding mechanism, so that more accurate positioning is facilitated, and the accuracy of drilling is improved.
4. Firstly, drilling, and pouring cement paste into the obtained drilled hole to form a cement pile; then pressing the prefabricated pipe pile into a cement pile through a pile planting mechanism to form a cement composite pile; not only reduces the difficulty of the implantation of the precast tubular pile, but also ensures the quality of the finally obtained pile body.
Drawings
Fig. 1 is a schematic perspective view of a pilot hole pile planting apparatus according to embodiment 1 of the present application.
Fig. 2 is a perspective view of a drill according to embodiment 1 of the present application.
Fig. 3 is a schematic cross-sectional view of a drill according to example 1 of the present application.
Fig. 4 is an exploded view of the pile-planting mechanism according to embodiment 1 of the present application.
Fig. 5 is a schematic perspective view of a drill according to embodiment 2 of the present application.
Description of reference numerals: 1. a hole guiding mechanism; 10. a follow-up frame; 11. a drill bit; 111. a main blade; 112. supporting the blades; 1121. a through hole; 113. an inner cavity; 114. an injection hole; 12. a drill stem; 13. drilling a power head; 14. a mast; 141. a pulley block; 15. a hauling rope; 16. a winch; 17. a material conveying pipe; 18. moving the chassis; 181. a crawler belt; 182. a stabilizing foot; 19. positioning a workstation; 2. a pile planting mechanism; 21. hoisting a machine; 22. a support; 23. A lifting plate; 231. the first precast tubular pile penetrates through the hole; 232. prefabricating a tubular pile clamping plate; 233. a sliding sleeve; 24. a pile pressing oil cylinder; 25. a base; 251. the second precast tubular pile penetrates through the hole; 26. a balancing weight; 261. the third precast tubular pile penetrates through the hole; 3. drilling; 4. and (5) prefabricating the tubular pile.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
Example 1
The embodiment of the application discloses a lead hole pile planting equipment for preparing a cement composite pipe pile. Referring to fig. 1, the hole guiding and pile planting equipment is composed of a hole guiding mechanism 1 and a pile planting mechanism 2.
Referring to fig. 1, the hole guiding mechanism 1 includes a drill bit 11, a drill rod 12, a drilling head 13, a mast 14, a hauling rope 15, a winch 16, a material conveying pipe 17, a follower stand 10, a positioning work station 19, and a moving chassis 18. Wherein, the mast 14 is vertically fixed on the upper surface of the movable chassis 18; the winch 16 is fixedly connected to the side of the mast 14, and the top end of the mast 14 is provided with a pulley block 141. One end of the hauling cable 15 is connected with the windlass 16, and the other end thereof bypasses the pulley block 141 and is fixedly connected with the following frame 10 connected with the other side of the mast 14; the follower frame 10 is slidably connected to the mast 14 by the cooperation of the slide rail and the slide groove. The drill pipe 12 is a steel pipe structure that is vertically disposed on one side of the mast 14 and outside of the mobile chassis 18. The upper end of the drill rod 12 passes through the through hole of the follower frame 10 and is exposed above the follower frame 10, a bearing (not shown) is arranged in the through hole of the follower frame 10, and the rotating rod 12 is rotatably connected with the follower frame 10 through the bearing. The lower end of the drill rod 12 is fixedly connected with the drill bit 11. Meanwhile, the drill rod 12 is also connected with a drilling power head 13 connected with a mast 14, and the drill rod 12 can rotate around the axis thereof through the driving of the drilling power head 13. The drilling power head 13 is located right below the follow-up frame 10 and is connected with the mast 14 in a sliding mode through a slide rail and slide groove. The material conveying pipe 17 is used for conveying cement paste or high-pressure water into the drill pipe 12, and one end of the material conveying pipe is communicated with a cement paste source or a high-pressure water source, and the other end of the material conveying pipe is communicated with the upper end of the drill pipe 12. Specifically, the upper end of the drill rod 12 is provided with an opening, and one end of the material conveying pipe 17 is rotatably connected with the opening through a bearing structure, so that the material conveying pipe 17 can be prevented from being driven by the rotation of the drill rod 12.
Referring to fig. 2, a spiral main blade 111 is connected to an outer circumferential surface of the drill 11, and the main blade 111 is wound around the outer circumferential surface of the drill 11 from top to bottom. A plurality of sub-blades 112 are connected to the windward surface of the main blade 111 (i.e., the surface of the main blade 111 on the side facing the direction of movement). Specifically, the branch blade 112 is a rectangular plate and is vertically and fixedly connected to the windward surface of the main blade 111 (i.e., the included angle between the branch blade 112 and the main blade 111 is 90 °). The longitudinal extension direction of the branch blade 112 is parallel to the tangential direction of the main blade 111. Thus, when the drill bit 11 rotates, the main blades 111 and the branch blades 112 cooperate with each other to achieve a better stirring effect. In other embodiments, the angle between the branch blade 112 and the main blade 111 is set to be any one of 60 °, 80 °, or 30-90 °.
Referring to fig. 2, the support blade 112 has a plurality of through holes 1121 for better agitating a fluid such as cement slurry.
Referring to fig. 2 and 3, the drill bit 11 has an inner cavity 113, and after the drill bit 11 is connected to the drill rod 12, the inner cavity 113 is communicated with the hollow cavity of the drill rod 12, so that cement slurry or high-pressure water delivered to the inside of the rotary rod 12 by the material delivery pipe 17 can further flow into the drill bit 11. The drill 11 is also provided with a plurality of injection holes 114 which enable the inner cavity 113 to be communicated with the outside; after the cement slurry or high pressure water enters the inner cavity 113, it can be sprayed out from the spraying holes 114.
Referring to fig. 1, the bottom of the mobile chassis 18 is provided with a crawler belt 181, and the mobile chassis 18 is provided with a permanent magnet synchronous motor and a speed reducer; the two parts are matched to drive the caterpillar 181 to work, so that the movable chassis 18 is driven to move, and the hole guiding mechanism 1 can be flexibly moved to a place needing operation. In other embodiments, the track 181 may also be replaced by wheels. In addition, a stable support leg 182 is further provided on the movable chassis 18, so that the hole guiding mechanism 1 is more stable during operation.
Referring to fig. 1, a positioning workstation 19 is provided on the moving chassis 18. Positioning work station 19 specifically is big dipper cloud workstation, can confirm the concrete coordinate that removes chassis 18 with the help of big dipper location to compare with the stake position coordinate of predetermineeing, thereby can guide to remove chassis 18, guide pilot hole mechanism 1 accurately reachs the target location promptly, and then improved the precision of punching, promoted the quality that the pilot hole planted the stake.
Referring to fig. 1, the pile planting mechanism 2 includes a crane 21, a bracket 22, a lifting plate 23, a pile pressing cylinder 24, a counter weight 26, and a base 25. Wherein, the crane 21 and the bracket 22 are respectively arranged on the base 25; the bracket 22 is a frame structure in a parallelepiped shape and is located in the middle of the base 25; the crane 21 is located at one side of the support 22. The lifting plate 23 is of a circular plate-shaped structure and is positioned in the bracket 22; four sliding sleeves 233 are uniformly connected to the periphery of the lifting plate 23, and the four sliding sleeves 233 are respectively sleeved on the four columns of the bracket 22 in a vertically slidable manner. Two pile pressing oil cylinders 24 are symmetrically and fixedly connected to the top of the support 22; the piston rods of the pile pressing oil cylinders 24 are all arranged downwards and fixed on the upper surface of the lifting plate 23; the lifting plate 23 is driven to move up and down by the extension and contraction of a piston rod of the pile pressing oil cylinder 24. A weight 26 is fixed to the upper surface of the elevating plate 23 for increasing the downward pressure of the lower elevating plate 23.
Referring to fig. 4, the second precast tubular pile is provided on the base 25 to pass through the hole 251, the first precast tubular pile is provided on the lifting plate 23 to pass through the hole 231, the third precast tubular pile is provided on the counterweight block 26 to pass through the hole 261, and the three are coaxially arranged. During construction, the support 22 is located above the pile position, and the precast tubular pile 4 passes through the three precast tubular pile through holes from top to bottom to reach the pile position.
Referring to fig. 4, the first precast tubular pile passes through the hole wall 231 to be provided with a precast tubular pile clamping plate 232. Specifically, the precast tubular pile clamping plate 232 is an arc-shaped plate and has two blocks; the two are symmetrically arranged on the hole wall of the first precast tubular pile passing through the hole 231. Two cylinders (not shown) are arranged in the lifting plate 23, and the two cylinders are in one-to-one correspondence with the two precast tubular pile clamping plates 232; precast tubular pile clamping plate 232 moves to the center that first precast tubular pile passed hole 231 under the cylinder drive that corresponds to mutually support through two precast tubular pile clamping plate 232 will pass first precast tubular pile 4 that hole 231 and step up.
The application also discloses a construction method adopting the hole-leading pile-planting equipment, which comprises the following steps:
(1) construction preparation: leveling a construction site; the pile position is determined and marked according to the predetermined design measurement payoff, and the pile position information is input into the positioning workstation 19.
(2) Drilling to form a hole: guided by the positioning station 19, the mobile chassis 18 carries the boring mechanism 1 to move to the target pile location and align the drill bit 11 with the pile location. The accuracy of the pile position is rechecked manually, and the positioning accuracy is not more than 1 cm. The levelness of the movable chassis 18 is adjusted to ensure that the verticality deviation of the drill rod 12 is not more than 0.5 percent.
Starting the hole guiding mechanism 1, driving the drill stem 12 by the drilling power head 13 and further driving the drill bit 11 to rotate, wherein the rotating speed is controlled at 20-50 r/min; in this embodiment, the control rotation speed is 30 r/min. Meanwhile, the drill rod 12 drives the drill bit 11 to move downwards, the drill bit gradually drills into the ground and continuously drills downwards, and the drilling speed is 0.6 m/min. The material conveying pipe 17 is connected with a high-pressure water source, high-pressure water passes through the drill rod 12 and the drill bit 11 and is sprayed out from the spray hole 114, and the high-pressure water can enable the soil around the drill bit 11 to be rapidly disintegrated and to be in a flow plastic or suspension state, so that the drill bit 11 can drill downwards conveniently. The high-pressure water pressure is controlled between 10 and 20MPa, and the high-pressure water pressure is 18MPa in the embodiment. The drill bit 11 and the high-pressure water are combined to gradually drill downward to form the borehole 3.
(3) Manufacturing a cement pile: after the drill bit 11 has drilled to the design depth, drilling is stopped but rotation is maintained. The material conveying pipe 17 is communicated with a cement slurry source, the cement slurry is sprayed out from the spraying hole 114 through the drill rod 12 and the drill bit 11, the grouting into the drill hole 3 is realized, and the grouting pressure is controlled to be 25 MPa. In this embodiment, the cement in the cement slurry is PO42.5 ordinary portland cement, and the water cement ratio is 0.6. After grouting, the drill bit 11 was stirred for a further 30 seconds and then slowly lifted upwards at a lifting speed of 25 cm/min. While the drill bit 11 is still rotating; the main blade 111 and the sub-blades 112 stir the cement paste together. The mutual matching of the main blade 111 and the branch blades 112 can improve the stirring degree of cement paste, so that the cement paste is fully mixed with soil particles in the drilled hole 3, the inside of the cement paste is more uniform, and the problems of uneven cement paste mixing, local premature solidification and the like are reduced. Meanwhile, the matching of the main blade 111 and the branch blade 112 does not obstruct the drilling of the drill bit 11. The through holes 1121 are formed in the supporting blades 112, so that part of cement paste can penetrate through the through holes 1121 during stirring and can be accelerated, the degree of irregular movement inside the cement paste is increased, the improvement of stirring inside the cement paste is facilitated, and the uniformity of the cement paste is further improved. When the drill bit 11 is lifted to 50cm from the ground, the grouting of the cement paste is stopped. After which the drill bit 11 leaves the borehole 3.
(4) Inserting a core pile: the hole guiding mechanism 1 leaves and the pile planting mechanism 2 is in place. When the cement pile is manufactured for 1 hour, the crane 21 of the pile planting mechanism 2 is started to hoist the precast tubular pile 4 serving as a core pile, specifically, the PHC tubular pile in the embodiment. Sequentially enabling the precast tubular pile 4 to pass through a third precast tubular pile through hole 261, a first precast tubular pile through hole 231 and a second precast tubular pile through hole 251 from top to bottom to reach a position 10cm above the pile position; and adjusting the verticality deviation of the precast tubular pile 4 to be not more than 0.5%. And the two precast tubular pile clamping plates 232 move to clamp the precast tubular pile 4. After the position of the precast tubular pile 4 is manually checked to be accurate, the pile pressing oil cylinder 24 is started to press the lifting plate 23 downwards, so that the precast tubular pile 4 is driven to be pressed downwards into the uncured cement pile. Due to the limitation of the stroke of the pile pressing oil cylinder 24, a section-by-section pressing mode is adopted, specifically, the prefabricated pipe pile 4 is pressed to a certain depth, the prefabricated pipe pile clamping plate 232 is loosened, the lifting plate 23 is lifted, the prefabricated pipe pile clamping plate 232 clamps the prefabricated pipe pile 4 again, then the prefabricated pipe pile 4 is pressed downwards, and the steps are repeated until the pressing of the prefabricated pipe pile 4 with enough length is completed, so that the cement composite pipe pile is formed.
Example 2
The embodiment of the application discloses a hole-leading pile-planting device and a construction method adopting the same. Referring to fig. 5, the present embodiment is substantially the same as embodiment 1 except that: the main blade 111 is a paddle blade, and the windward surface of the blade has an included angle of 135 degrees with the rotation plane (i.e., horizontal plane). The main blades 111 are provided in four numbers and are uniformly connected to the outer circumferential surface of the drill 11 through connecting columns.
Referring to fig. 5, the branch blade 112 is a rectangular blade and is vertically fixed to the windward surface of the main blade 111, and the length extending direction of the branch blade 112 is parallel to the length extending direction of the main blade 111.
Through the arrangement, under the mutual matching of the main blades 111 and the branch blades 112, the stirring degree of cement paste can be improved, the mixing of the cement paste and soil particles can be effectively improved, the problems of uneven mixing of cement paste components and premature local coagulation are reduced, and the quality of the cement composite pipe pile is improved; meanwhile, the drilling efficiency of the drill bit is improved, and the production efficiency is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. Leading hole pile planting equipment, its characterized in that: the pile driving device comprises a hole guiding mechanism (1) for forming a drill hole (3) in a construction site and a pile planting mechanism (2) for pressing a preset tubular pile (4) into the drill hole (3);
the hole guiding mechanism (1) comprises a drill bit (11), the peripheral surface of the drill bit (11) is connected with a main blade (111), a plurality of branch blades (112) are connected to the surface of the main blade (111), and the included angle between each branch blade (112) and the corresponding main blade (111) is 30-90 degrees.
2. The pilot hole pile planting apparatus according to claim 1, wherein: the supporting blades (112) are provided with a plurality of through holes (1121).
3. The pilot hole pile planting apparatus according to claim 2, wherein: the main blade (111) is a spiral blade and surrounds the outer peripheral surface of the drill bit (11); the branch blades (112) are vertically and fixedly connected to the windward blade surface of the main blade (111), and the length extension direction of the branch blades (112) is parallel to the tangential direction of the main blade (111).
4. The pilot hole pile planting apparatus according to claim 2, wherein: the main blades (111) are paddle type blades, the windward blade surfaces of the main blades and the rotating plane form an included angle of 120-150 degrees, and the main blades (111) are provided with a plurality of blades and are uniformly connected to the outer peripheral surface of the drill bit (11); the branch blades (112) are vertically and fixedly connected to the windward blade surface of the main blade (111), and the length extension direction of the branch blades (112) is parallel to the length extension direction of the main blade (111).
5. The pilot hole pile planting apparatus according to claim 1, wherein: the drill bit (11) is provided with an inner cavity (113), and the inner cavity (113) is communicated with the outside through a jet hole (114) formed in the drill bit (11).
6. The pilot hole pile planting apparatus according to claim 1, wherein: the hole guiding mechanism (1) further comprises a drill rod (12), a drilling power head (13), a mast (14), a traction rope (15), a winch (16), a material conveying pipe (17) and a movable chassis (18);
the mast (14) is arranged on the movable chassis (18), the top end of the mast (14) is provided with a pulley block (141), one end of the traction rope (15) is connected with a winch (16) arranged on the mast (14), and the other end of the traction rope is connected with the upper end of the drill rod (12) after bypassing the pulley block (141);
the drill rod (12) is positioned on the outer side of the movable chassis (18) and is connected with a drilling power head (13) which is arranged on the mast (14) in a sliding mode, the drill rod (12) is driven by the drilling power head (13) to rotate, and the lower end of the drill rod (12) is connected with the drill bit (11);
the upper end of the drill rod (12) is also communicated with a material conveying pipe (17).
7. The pilot hole pile planting apparatus according to claim 6, wherein: also included is a positioning workstation (19) disposed on the mobile chassis (18).
8. The pilot hole pile planting apparatus according to claim 1, wherein: the pile planting mechanism (2) comprises a crane (21), a bracket (22), a lifting plate (23), a pile pressing oil cylinder (24) and a base (25);
the crane (21) and the support (22) are respectively arranged on the base (25), the pile pressing oil cylinder (24) is fixedly connected to the support (22), and a piston rod of the pile pressing oil cylinder (24) is connected with the lifting plate (23) and drives the lifting plate (23) to lift through the expansion of the piston rod;
seted up first precast tubular pile on lifter plate (23) and passed hole (231), first precast tubular pile passes and sets up precast tubular pile clamp plate (232) in hole (231), set up on base (25) and pass hole (251) coaxial second precast tubular pile with first precast tubular pile.
9. The pilot hole pile planting apparatus according to claim 8, wherein: set up balancing weight (26) on lifter plate (23), set up on balancing weight (26) and pass hole (261) with first precast tubular pile third precast tubular pile that the hole (231) coaxial set up.
10. A construction method using the pilot hole pile-planting device according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
construction preparation: leveling a construction site and determining a pile position;
drilling to form a hole: after the drill bit (11) is aligned with the pile position, the hole guiding mechanism (1) is started, the drill bit (11) starts to rotate and drills downwards to form a drill hole (3);
manufacturing a cement pile: after the drill bit (11) drills to the designed depth, cement slurry is injected into the drill hole (3), and the drill bit (11) is lifted and kept rotating; the cement paste is stirred by matching the main blade (111) and the branch blades (112);
inserting a core pile: hoisting the precast tubular pile (4) to the pile planting mechanism (2) within 3 hours after the cement paste is manufactured; and (3) opening the pile planting mechanism (2) and pressing the precast tubular pile (4) into the cement pile.
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| CN202110553345.XA CN113309088A (en) | 2021-05-20 | 2021-05-20 | Hole-leading pile-planting equipment and construction method |
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| CN202110553345.XA CN113309088A (en) | 2021-05-20 | 2021-05-20 | Hole-leading pile-planting equipment and construction method |
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| CN114033306A (en) * | 2021-11-12 | 2022-02-11 | 中建安装集团有限公司 | Intelligent automatic pile forming equipment suitable for cement soil composite pile |
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| CN114775597A (en) * | 2022-03-26 | 2022-07-22 | 河南全过程工程研究院有限公司 | Drilling and pile burying device for precast pile and working method thereof |
| CN114775597B (en) * | 2022-03-26 | 2024-03-22 | 河南全过程工程研究院有限公司 | Drilling pile burying device for precast pile and working method of drilling pile burying device |
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