CN112392036A - Cast-in-place pile construction equipment and method with mud circulation, separation and slag removal functions - Google Patents

Cast-in-place pile construction equipment and method with mud circulation, separation and slag removal functions Download PDF

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Publication number
CN112392036A
CN112392036A CN202011249301.XA CN202011249301A CN112392036A CN 112392036 A CN112392036 A CN 112392036A CN 202011249301 A CN202011249301 A CN 202011249301A CN 112392036 A CN112392036 A CN 112392036A
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mud
slurry
pile
separation
circulation
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徐守田
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徐守田
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Priority to CN202011249301.XA priority Critical patent/CN112392036A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/08Removing obstacles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds

Abstract

The invention relates to a cast-in-place pile construction device and a cast-in-place pile construction method with functions of slurry circulation, separation and slag removal, and aims to solve the problems of environmental pollution caused by discharge and outward transportation of a large amount of slurry and insufficient bearing capacity caused by sediment and hole shrinkage at a pile end in the cast-in-place pile construction process. The structure of the device comprises a drilling/punching device, a slurry circulating system, a slurry separating system and a slag removing device. The mud circulation system and the mud separation system work in a matched mode, a mud rough separator and a mud processor are used for discharging large-block sediments, a mud detector is used for detecting the quality of the recovered mud, and the mud is ensured to be recycled after the sediments are discharged; the slag removing device thoroughly removes the sediments in the pile hole and reinforces the hole wall through short circulation of the slurry, so that the slurry does not fall to the ground, and obvious public social benefits are provided for the sanitary environment of urban roads and civilized construction sites; the pile does not shrink in diameter, the steel reinforcement cage does not float upwards, the pile end does not have sediment, and the bearing capacity is effectively used; mechanical equipment is systematized and automated, and labor cost is saved.

Description

Cast-in-place pile construction equipment and method with mud circulation, separation and slag removal functions
Technical Field
The invention provides a cast-in-place pile construction device and method with functions of slurry circulation, separation and slag removal, and belongs to the technical field of building construction.
Background
With the development of national economy, civil and industrial buildings are gradually raised, higher requirements are made on the quality of pile foundations, and cast-in-place piles are accepted by design units and construction units. Common pile types are precast piles and concrete cast-in-place piles. The precast pile has the following disadvantages: the soil squeezing bearing capacity is low, the hard soil layer and the rock layer cannot be driven into the pile end, the ground around the pile is easy to bulge, the adjacent pile floats upwards, the pile breakage is easy to occur, the welding quality is difficult to control, and the corrosion resistance is poor; the bearing capacity, the uplift resistance, the shear resistance and the corrosion resistance of the concrete cast-in-place pile are superior to those of other pile types, and the concrete cast-in-place pile is widely applied to various high-rise and high-class building projects.
Along with the development of activities of creating sanitary cities and creating civilized cities in various places, the requirement on environmental sanitation of construction sites is higher and higher. The traditional cast-in-place pile is limited by the construction process, a mud pit and a mud circulation ditch need to be dug on the ground in the hole forming operation of each pile foundation, and liquid mud needs to be uninterruptedly configured in the drilling process, so that the cost is increased, the construction progress is slow, the construction site is spread over the mud pit and the mud ditch, the environmental sanitation of the construction site is influenced, the mud is spilled and leaked in the outward transportation process, the urban road and the environmental sanitation are influenced, and the requirements of sanitation and civilization construction sites cannot be met.
Patent CN102704873A discloses a construction equipment with a mud pit and a mud separating device for drilling/punching cast-in-place piles, which adopts a movable mud pit to solve the technical problem that a mud pit and a mud circulation trench need to be dug on the ground every time a pile is constructed, so that the mud pit and the mud trench spread over the construction site and pollute the environment. When the pile foundation is drilled to the designed depth or the drilling machine is difficult to sink, the impact hammer carried by the pile machine is used, the pile hole is hammered to sink into the rock, and the pile body generates higher bearing capacity through the rock entering and hole expanding of the impact hammer.
However, in the actual construction process, slurry is discharged and a large amount of slurry is transported outside, so that slurry is thrown and leaked, the sanitation of urban roads is influenced, and a sewer pipe network is blocked; the sediment at the pile end is not easy to remove, the bearing capacity is influenced, the use effect is reduced, and the construction cost is increased; reducing is easily caused, and the quality and the construction efficiency of the pile body are influenced.
Disclosure of Invention
The invention provides a cast-in-place pile construction device and a cast-in-place pile construction method with functions of slurry circulation, separation and slag removal, and aims to overcome the defects in the cast-in-place pile construction process, improve the construction process and increase the functions of the device.
The technical solution of the invention is as follows:
the cast-in-place pile construction equipment with the functions of slurry circulation, separation and slag removal structurally comprises a drilling/punching device, a slurry circulation system, a slurry separation system and a slag removal device.
The drilling/punching device comprises a drilling machine 1, a pile driver frame 2, a drill rod 3, a drill bit 4 and a percussion hammer 17. The drilling machine 1, the drill rod 3 and the drill bit 4 are connected in sequence, and the impact hammer 17 is connected with the drilling machine 1 and the pile driver frame 2 through a steel wire rope and a pulley block.
The mud separation system comprises a mud rough separator 12, a mud sedimentation tank 13 and a mud processor 14. The mud coarse separator 12 is arranged above the pile driver frame 2 and is connected with the mud sedimentation tank 13; a slurry processor 14 is arranged behind the slurry sedimentation tank 13; after the mud is pumped out of the pile hole by the mud circulating system, the mud and large-particle mud sediments are primarily separated by the mud coarse separator 12, the mud after primary separation flows into the mud sedimentation tank 13, and flows back to the mud circulating system after being treated by the mud treatment machine 14.
The mud circulating system structure comprises a mud outlet pipe 5, a reverse circulating pump 6, a mud tank 7, a positive circulating pump 8, a mud sucking port 9 and a switching valve 11. The self-contained mud pit 7 is arranged below the pile driver frame 2, the self-contained mud pit 7 is communicated with a mud sedimentation tank 13, the positive circulating pump 8 is arranged inside the self-contained mud pit 7, and the positive circulating pump 8 is connected with a mud suction port 9 through a pipeline; one end of the slurry outlet pipe 5 is connected with the drilling machine, the other end of the slurry outlet pipe is connected with the reverse circulation pump 6 through the switching valve 11, and the switching valve 11 controls the flow direction of slurry.
The slag removing device comprises a mud pump 18, a conduit 19 and a slag removing barrel 20. The slag removing cylinder 20 is connected with the pile hole protecting cylinder, and the top of the guide pipe 19 is provided with a mud pump 18.
Preferably, the structure of the mud rough separator 12 comprises a mud inlet 12-1, a chain shaft 12-2, a net type chain plate 12-3, a motor 12-4, a gear 12-5 and a rough separator bracket 12-6. The rough separator bracket 12-6 is arranged above the pile driver frame 2; the pulp inlet 12-1 is connected with a reverse circulation pump 6; the motor 12-4 is connected with the gear 12-5 in a transmission way, and the chain shaft 12-2 penetrates through a sleeve of the net type chain plate 12-3 to jointly form a conveyor belt. And a mud sedimentation tank 13 is arranged below the net type chain plate 12-3.
Preferably, the slurry processor 14 is detachably installed behind the slurry sedimentation tank 13, and the slurry processor 14 can be independently operated.
As a preferred scheme, a slurry detector 15 is arranged in the self-contained slurry tank 7 and used for detecting whether slurry in the self-contained slurry tank 7 is qualified or not; the front end is provided with a slurry flow control valve 7-1 which is connected with a slurry suction port 9.
Preferably, a pile casing 10 is arranged at the pile hole, and a water stop ring 10-1 is arranged on the inner side of the top of the pile casing 10; a slurry recycling cylinder 16 is arranged above the protective cylinder 10, a water stopping groove 16-1 is arranged at the bottom of the slurry recycling cylinder 16, the protective cylinder 10 and the slurry recycling cylinder 16 are connected in a matched mode through a water stopping ring 10-1 and the water stopping groove 16-1, and the slurry recycling cylinder 16 is located above the ground. The weight of the slurry in the slurry recovery cylinder 16 generates positive pressure to act on the wall of the pile hole, the negative pressure generated by the weight ratio of the pile hole wall to the slurry is balanced, and the diameter shrinkage and hole collapse of the pile hole are avoided.
Preferably, the slag removing barrel 20 comprises a slag blocking net 20-1, a slurry cyclone pipe 20-2, a cyclone nozzle 20-3 and a slurry recycling pipe 20-4. The slag blocking net 20-1 is detachably arranged on the inner side of a bottom hole of the slag removing barrel 20, the slurry cyclone tube 20-2 and the slurry recovery tube 20-4 are jointly connected with the conduit 19, and valves are respectively arranged at the joints to control the slurry flow direction of the conduit 19; the mud swirl tube 20-2 is provided with a plurality of swirl nozzles 20-3.
A cast-in-place pile construction equipment with functions of slurry circulation, separation and slag removal comprises the following steps:
1) paying off according to a drawing, determining a pile position coordinate, moving the cast-in-place pile construction equipment to a pile position, sinking the pile casing, and cutting soil by matching the drill bit 4 and the impact hammer 17;
2) preparing slurry in a self-contained slurry tank 7, and starting a slurry circulation system and a slurry separation system; the slurry enters a slurry rough separator 12 through a slurry outlet pipe 5 and a reverse circulation pump 6 for preliminary separation, and the slurry falls into a slurry sedimentation tank 13 below the slurry rough separator 12; the settled clear slurry flows back to the self-contained slurry pool 7, and flows back to the pile hole for recycling through the flow control valve 7-1 after being detected to be qualified; the sediments obtained by the treatment of the mud rough separator 12 and the mud processor 14 are stored and treated in a centralized way;
3) after the pile hole is formed, the pile driver is moved into the next pile position, the reinforcement cage is lowered, and the slag removal device is installed; starting a mud pump 18, sucking mud and sediments in a pile hole into a mud cyclone tube 20-2 through a guide pipe 19, spraying out the mud and sediments clockwise through a cyclone nozzle 20-3, and flowing into a sediment blocking net 20-1 for filtering;
4) after the sediment is cleared, the guide pipe 19 is connected with a concrete charging hopper to be filled with concrete, and slurry in a pile hole flows back to the sediment removal cylinder 20; the mud processor 14 is detached and transferred to be installed near the pile hole, and the mud recovery pipe 20-4 is connected to the mud pit 7 with the mud processor 14; starting a slurry pump 18, switching a valve to a slurry recovery pipe 20-4, treating the residual slurry and draining the residual slurry back to a self-contained slurry tank 7;
5) after the concrete pouring is finished, the slag removing barrel 20 and the slag blocking net 20-1 are lifted, and the sediments automatically fall down.
The invention has the beneficial effects that:
1) the mud is automatically treated, recycled and utilized, so that the mud does not fall to the ground, and obvious public social benefits are provided for the sanitary environment of urban roads and civilized construction sites;
2) the pile does not shrink in diameter, the steel reinforcement cage does not float upwards, the pile end does not have sediment, and the bearing capacity is effectively used;
3) mechanical equipment is systematized and automated, and labor cost is saved.
Drawings
FIG. 1 is a schematic structural diagram of a cast-in-place pile construction device with functions of slurry circulation, separation and slag removal.
FIG. 2 is a schematic structural diagram of an impact hammer of cast-in-place pile construction equipment.
FIG. 3 is a schematic diagram of a mud skimmer configuration of the mud separation system.
Fig. 4 is a schematic elevation structure view of the slag removing device.
FIG. 5 is a structural top view of the slag removing device.
Fig. 6 is a diagrammatic view of the construction process of the slag removal device.
In the attached drawing, 1 is a drilling machine, 2 is a pile driver frame, 3 is a drill rod, 4 is a drill bit, 5 is a slurry outlet pipe, 6 is a reverse circulation pump, 7 is a self-contained slurry tank, 7-1 is a slurry flow control valve, 8 is a positive circulation pump, 9 is a slurry suction port, 10 is a protective cylinder, 10-1 is a water stop ring, 11 is a switching valve, 12 is a slurry coarse separator, 12-1 is a slurry inlet, 12-2 is a chain shaft, 12-3 is a net type chain plate, 12-4 is a motor, 12-5 is a gear, 12-6 is a coarse separator bracket, 13 is a slurry sedimentation tank, 14 is a slurry processor, 15 is a slurry detector, 16 is a slurry recovery cylinder, 16-1 is a water stop tank, 17 is an impact hammer, 18 is a slurry pump, 19 is a conduit, 20 is a slag removal cylinder, 20-1 is a slag blocking net, 20-2 is a slurry swirl pipe, and 20-3 is a swirl nozzle, 20-4 is a slurry recovery pipe.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings.
Referring to the attached drawing 1, the cast-in-place pile construction equipment with the functions of slurry circulation, separation and slag removal structurally comprises a drilling/punching device, a slurry circulation system, a slurry separation system and a slag removal device. The drilling/punching apparatus comprises a drilling machine 1, a pile driver frame 2, a drill rod 3, a drill bit 4 and a percussion hammer 17. The drilling machine 1, the drill rod 3 and the drill bit 4 are connected in sequence and are positioned right above the pile hole. A pile casing 10 is arranged at the pile hole, and a water stop ring 10-1 is arranged on the inner side of the top of the pile casing 10; a slurry recycling cylinder 16 is arranged above the protective cylinder 10, a water stopping groove 16-1 is arranged at the bottom of the slurry recycling cylinder 16, the protective cylinder 10 and the slurry recycling cylinder 16 are connected in a matched mode through a water stopping ring 10-1 and the water stopping groove 16-1, and the slurry recycling cylinder 16 is located above the ground. The weight of the slurry in the slurry recovery cylinder 16 generates positive pressure to act on the wall of the pile hole, the negative pressure generated by the weight ratio of the pile hole wall to the slurry is balanced, and the diameter shrinkage and hole collapse of the pile hole are avoided.
The mud separation system includes a mud roughing separator 12, a mud settling tank 13, and a mud handler 14. The mud coarse separator 12 is arranged above the pile driver frame 2 and is connected with the mud sedimentation tank 13; a slurry processor 14 is arranged behind the slurry sedimentation tank 13; after the mud is pumped out of the pile hole by the mud circulating system, the mud and large-particle mud sediments are primarily separated by the mud coarse separator 12, the mud after primary separation flows into the mud sedimentation tank 13, and flows back to the mud circulating system after being treated by the mud treatment machine 14. The slurry treatment machine 14 is detachably installed behind the slurry settling tank 13, and the slurry treatment machine 14 can be independently operated.
The mud circulating system structure comprises a mud outlet pipe 5, a reverse circulating pump 6, a mud tank 7, a positive circulating pump 8, a mud sucking port 9 and a switching valve 11. The self-contained mud pit 7 is arranged below the pile driver frame 2, the self-contained mud pit 7 is communicated with a mud sedimentation tank 13, the positive circulating pump 8 is arranged inside the self-contained mud pit 7, and the positive circulating pump 8 is connected with a mud suction port 9 through a pipeline; one end of the slurry outlet pipe 5 is connected with the drilling machine, the other end of the slurry outlet pipe is connected with the reverse circulation pump 6 through the switching valve 11, and the switching valve 11 controls the flow direction of slurry. A mud detector 15 is arranged in the mud tank 7 to detect whether the mud in the mud tank 7 is qualified; the front end of the mud pool 7 is provided with a mud flow control valve 7-1 which is connected with a mud sucking port 9.
Referring to the attached figure 2, when the pile foundation is drilled to the designed depth or the drilling machine 1 is difficult to sink, the impact hammer 17 on the pile foundation is used, the pile hole is hammered to sink into the rock, and the impact hammer 17 enters the rock and expands the hole, so that the pile body generates higher bearing capacity.
Referring to the attached figure 3, the structure of the mud coarse separator 12 comprises a mud inlet 12-1, a chain shaft 12-2, a net type chain plate 12-3, a motor 12-4, a gear 12-5 and a coarse separator bracket 12-6. The rough separator bracket 12-6 is arranged above the pile driver frame 2; the pulp inlet 12-1 is connected with a reverse circulation pump 6; the motor 12-4 is connected with the gear 12-5 in a transmission way, and the chain shaft 12-2 penetrates through a sleeve of the net type chain plate 12-3 to jointly form a conveyor belt. And a mud sedimentation tank 13 is arranged below the net type chain plate 12-3. The slurry enters a slurry rough separator through a slurry inlet 12-1 for preliminary separation.
Referring to fig. 4-5, the slag removal apparatus includes a mud pump 18, a conduit 19 and a slag removal barrel 20. The slag removing cylinder 20 is connected with the pile hole protecting cylinder, and the top of the guide pipe 19 is provided with a mud pump 18. The slag removing barrel 20 comprises a slag blocking net 20-1, a slurry cyclone pipe 20-2, a cyclone nozzle 20-3 and a slurry recovery pipe 20-4. The slag blocking net 20-1 is detachably arranged on the inner side of a bottom hole of the slag removing barrel 20, the slurry cyclone tube 20-2 and the slurry recovery tube 20-4 are jointly connected with the conduit 19, and valves are respectively arranged at the joints to control the slurry flow direction of the conduit 19; the mud swirl tube 20-2 is provided with a plurality of swirl nozzles 20-3.
A cast-in-place pile construction equipment with functions of slurry circulation, separation and slag removal comprises the following steps:
1) paying off according to a drawing, determining a pile position coordinate, moving the cast-in-place pile construction equipment to a pile position, sinking the pile casing, and cutting soil by matching the drill bit 4 and the impact hammer 17;
2) preparing slurry in a self-contained slurry tank 7, and starting a slurry circulation system and a slurry separation system; the slurry enters a slurry rough separator 12 through a slurry outlet pipe 5 and a reverse circulation pump 6 for preliminary separation, and the slurry falls into a slurry sedimentation tank 13 below the slurry rough separator 12; the settled clear slurry flows back to the self-contained slurry tank 7, and is recycled after being detected to be qualified; the sediments obtained by the treatment of the mud rough separator 12 and the mud processor 14 are stored and treated in a centralized way;
3) after the pile hole is formed, the pile driver is moved into the next pile position, the reinforcement cage is lowered, and the slag removal device is installed; as shown in the attached figure 6-A, a mud pump 18 is started, mud and sediments in a pile hole are sucked into a mud cyclone tube 20-2 through a guide tube 19, are ejected clockwise through a cyclone nozzle 20-3 and flow into a sediment blocking net 20-1 for filtering;
4) after the sediment is cleared, the guide pipe 19 is connected with a concrete charging hopper to be filled with concrete, and slurry in a pile hole flows back to the sediment removal cylinder 20; the mud processor 14 is detached and transferred to be installed near the pile hole, and the mud recovery pipe 20-4 is connected to the mud pit 7 with the mud processor 14; starting a slurry pump 18, switching a valve to a slurry recovery pipe 20-4, treating the residual slurry and draining the residual slurry back to a self-contained slurry tank 7;
5) as shown in the attached figure 6-B, after the concrete pouring is finished, the slag removing barrel 20 and the slag blocking net 20-1 are lifted, and the sediment automatically falls down.
Example 1
Two 34 stories developed by Hongkong garden real estate development Limited company, high-rise residential buildings 100 meters high, about 3.2 ten thousand square meters of building area on the ground, about 1 thousand square meters of basement building area, project location in Hongkong city sea, south east of Hongkong, project location in Julong business circle people flow densely, and the time of starting is in the period of establishing civilized sanitary cities in Hongkong city. Project design bored pile king pile phi 800mm264, pile length 36 m, single pile bearing capacity 5800KN, basement pile phi 600mm180, pile length 36 m, bearing capacity 3800KN, pile end entry medium weathering rock 800mm, underground 3-5 m for miscellaneous heap soil, old foundation stone silt 15-18 m, clay silt layer, sand layer about 10 m, strong weathering and medium weathering rock according to survey report frictional resistance calculation obviously not enough, need to enter rock depends on pile end resistance, most embedding rock need not sediment. The construction equipment and the construction process of the mud separation and circulation cast-in-place pile are adopted, 450 piles with the diameter of 800mm are 18 m in length, and an automobile reverse circulation drilling machine is adopted. In the construction process, the relevant units such as a dust office, a city management office, a slag office and the like are constructed in a city, and the conditions of construction site sanitation, slurry discharge and the like are frequently checked.
Leaders in the process of inspection are surprised to discover that the mud separating and circulating equipment and the reverse circulating automobile drilling machine are different in process, one is that mud and a mud tank are used all the time, the other is that the mud field is not clean, and the mechanically separated mud is orderly and directly stacked.
After construction is finished, a detection unit carries out static load detection on 12 piles, the bearing capacity of each pile is 12000KN, the piles sink 15mm-20mm, the piles rebound under pressure, the piles rebound 5mm after unloading, the fact that the pile ends are embedded into medium weathered rock and the pile bottoms do not have sediment is proved, small strain of sound wave detection is a type of pile, and the piles are qualified after one-time acceptance of related departments such as a construction party's homogeneous supervision station.
Example 2
A test building of Jiangsu De Yuan pharmaceutical industry Limited is located in a development area of Hongyun harbor city, 126 bored piles are designed, the diameter of the piles is 600mm, the length of the piles is 22 meters, and the design value of the bearing capacity is 1800 KN.
In geological conditions, 2 m of miscellaneous mound on the ground surface, 16-18 m of sludge, 1-2 m of clay and broken stone, 1-2 m of strongly weathered rock gneiss and pile side friction are small, and more than 80% of the friction is supported by the resistance of the pile end to bear upper load.
After the engineering construction is finished, the bearing capacity reaches 4000KN through a static load test, and the large strain and the small strain detection meet the design requirements.
Example 3
A plant of No. 6 company of scientific and technological development of New-field of continuous cloud harbor is located in the West and West of Yuntai mountain of economic and technological development area of continuous cloud harbor city, 116 bored piles with the diameter of 600mm, the length of the pile is 7-12 m, the bearing capacity is 2600KN, the clay layer of 3-9 m silt of backfill miscellaneous soil of 2 m underground is very small according to geological survey reports, the lower layer is strong weathered rock, the pile bearing capacity mainly depends on the resistance of the pile end and the resistance of the pile entering the rock to bear the upper load, after the construction is finished, the bearing capacity reaches 5200KN through a static pressure test, the large and small strain tests are all piles, and the piles are qualified through supervision and acceptance by a quality supervision station construction.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (10)

1. The cast-in-place pile construction equipment with the functions of slurry circulation, separation and slag removal is characterized by comprising a drilling/punching device, a slurry circulation system, a slurry separation system and a slag removal device; the drilling/punching device is arranged above the pile hole and used for drilling/punching operation; the mud circulating system and the mud separating system are arranged on the pile driver frame (2), and the mud separating system is embedded into the mud circulating system; after the pile hole is formed, the slag removing device is installed at the drill rod interface and matched with the drill rod interface to finish concrete pouring.
2. The bored pile construction equipment with mud circulation, separation, and slag removal functions according to claim 1, wherein the drilling/punching means includes a drilling machine (1), a drill rod (3), a drill bit (4), and a hammer (17); the drilling machine (1), the drill rod (3) and the drill bit (4) are sequentially connected, and the impact hammer (17) is connected with the drilling machine (1) and the pile driver frame (2) through a steel wire rope and a pulley block.
3. The bored pile construction equipment with mud circulation, separation, and slag removal functions according to claim 1, wherein the mud separation system includes a mud roughing separator (12), a mud settling tank (13), and a mud handler (14); the mud coarse separator (12) is arranged above the pile driver stand (2) and is connected with the mud sedimentation tank (13); the mud treatment machine (14) is detachably mounted behind the mud sedimentation tank (13).
4. The bored concrete pile construction equipment with functions of mud circulation, separation and slag removal according to claim 3, wherein the structure of the mud coarse separator (12) comprises a mud inlet (12-1), a chain shaft (12-2), a net type chain plate (12-3), a motor (12-4), a gear (12-5) and a coarse separator bracket (12-6); the rough separator bracket (12-6) is arranged above the pile driver frame (2); the slurry inlet (12-1) is connected with a slurry circulating system; the motor (12-4) is in transmission connection with the gear (12-5), and the chain shaft (12-2) penetrates through a sleeve of the net type chain plate (12-3) to jointly form a conveyor belt structure; a mud sedimentation tank (13) is arranged right below the net type chain plate (12-3).
5. The bored concrete pile construction equipment with mud circulation, separation, scarfing cinder function of claim 1, characterized in that the mud circulation system structure includes mud pipe (5), reverse circulation pump (6), own mud pit (7), positive circulation pump (8), inhale thick liquid mouth (9), diverter valve (11); the self-contained mud pit (7) is arranged below the pile driver frame (2), and the self-contained mud pit (7) is communicated with the mud separation system; the positive circulating pump (8) is arranged in the mud tank (7) and is connected with the mud sucking port (9) through a pipeline; one end of the slurry outlet pipe (5) is connected with the drilling machine, the other end of the slurry outlet pipe is connected with the reverse circulation pump (6) through a switching valve (11), and the flow direction of slurry is controlled by the switching valve (11).
6. The cast-in-place pile construction equipment with functions of mud circulation, separation and slag removal according to claim 5, characterized in that a mud detector (15) is arranged inside the mud tank (7) and a mud flow control valve (7-1) is arranged at the front end and connected with the mud suction port (9).
7. The bored pile construction equipment with mud circulation, separation, and slag removal functions according to claim 1, wherein the slag removal device includes a mud pump (18), a pipe (19), and a slag removal cylinder (20); the slag removing cylinder (20) is connected with the pile hole protecting cylinder, and a slurry pump (18) is arranged at the top of the guide pipe (19).
8. The bored concrete pile construction equipment with mud circulation, separation and slag removal functions according to claim 7, wherein the slag removal barrel (20) comprises a slag blocking net (20-1), a mud swirl tube (20-2), a swirl nozzle (20-3) and a mud recovery tube (20-4). The slag blocking net (20-1) is detachably arranged on the inner side of a bottom hole of the slag removing barrel (20), the slurry cyclone tube (20-2) and the slurry recovery tube (20-4) are jointly connected with the conduit (19), valves are respectively arranged at the joints, and the flow direction of slurry in the conduit (19) is controlled; the mud swirl pipe (20-2) is provided with a plurality of swirl nozzles (20-3).
9. The cast-in-place pile construction equipment with functions of mud circulation, separation and slag removal according to claim 1, characterized in that a pile casing (10) is arranged at the pile hole, and a water stop ring (10-1) is arranged on the inner side of the top of the pile casing (10); a slurry recovery barrel (16) is arranged above the protective barrel (10), a water stop groove (16-1) is arranged at the bottom of the slurry recovery barrel (16), the protective barrel (10) and the slurry recovery barrel (16) are connected in a matched mode through the water stop ring (10-1) and the water stop groove (16-1), and the slurry recovery barrel (16) is located above the ground.
10. The cast-in-place pile construction equipment with functions of slurry circulation, separation and slag removal according to claims 1-9, characterized in that the construction method comprises the following steps:
1) paying off according to a drawing, determining a pile position coordinate, moving the cast-in-place pile construction equipment to a pile position, sinking the pile casing, and cutting soil and sinking by matching a drill bit (4) and an impact hammer (17);
2) slurry is prepared in a self-contained slurry tank (7), and a slurry circulation system and a slurry separation system are started; the slurry enters a slurry rough separator (12) through a slurry outlet pipe (5) and a reverse circulation pump (6) for preliminary separation, and the slurry falls into a slurry sedimentation tank (13) below the slurry rough separator (12); the settled clear slurry flows back to the self-contained slurry pool (7) and is recycled after being detected to be qualified; the sludge obtained by the treatment of the slurry rough separator (12) and the slurry processor (14) is stored and treated in a centralized way;
3) after the pile hole is formed, the pile driver is moved into the next pile position, the reinforcement cage is lowered, and the slag removal device is installed; a mud pump (18) is started, mud and sediments in the pile hole are sucked into a mud cyclone tube (20-2) through a guide tube (19), are ejected out clockwise through a cyclone nozzle (20-3), and flow into a sediment blocking net (20-1) for filtering;
4) after the sediment is cleared, the guide pipe (19) is connected with a concrete charging hopper to pour concrete, and slurry in the pile hole flows back to the sediment removal cylinder (20); the mud treatment machine (14) is disassembled and transferred to be installed near the pile hole, and the mud recovery pipe (20-4) is connected to the mud pool (7) with the mud treatment machine (14); starting a mud pump (18) and a mud processor (14), switching a valve to a mud recovery pipe (20-4), and treating and draining the residual mud back to a mud tank (7) of the self-carrying body;
5) after the concrete pouring is finished, the slag removing barrel (20) and the slag blocking net (20-1) are lifted, and the sediments automatically fall down.
CN202011249301.XA 2020-11-10 2020-11-10 Cast-in-place pile construction equipment and method with mud circulation, separation and slag removal functions Pending CN112392036A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7019229B1 (en) * 2021-12-09 2022-02-15 横浜ライト工業株式会社 Stirring system and stirring method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7019229B1 (en) * 2021-12-09 2022-02-15 横浜ライト工業株式会社 Stirring system and stirring method

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