CN110872840A - Deviation correcting device for immersed tube cast-in-place pile and using method thereof - Google Patents
Deviation correcting device for immersed tube cast-in-place pile and using method thereof Download PDFInfo
- Publication number
- CN110872840A CN110872840A CN201911316071.1A CN201911316071A CN110872840A CN 110872840 A CN110872840 A CN 110872840A CN 201911316071 A CN201911316071 A CN 201911316071A CN 110872840 A CN110872840 A CN 110872840A
- Authority
- CN
- China
- Prior art keywords
- immersed tube
- air
- retaining ring
- air guide
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000002689 soil Substances 0.000 claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 230000008602 contraction Effects 0.000 claims abstract description 5
- 238000006073 displacement reaction Methods 0.000 claims description 46
- 238000001514 detection method Methods 0.000 claims description 31
- 230000008569 process Effects 0.000 claims description 17
- 238000002955 isolation Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 description 18
- 238000012937 correction Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
-
- 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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a deviation correcting device for a immersed tube cast-in-place pile and a using method thereof, wherein the deviation correcting device comprises a double-acting air hammer, and the double-acting air hammer is arranged at the top of an immersed tube; the high-pressure fans are uniformly distributed around the immersed tube, each high-pressure fan is connected with the main air guide pipe and the air guide branch pipes, and the air guide branch pipes are uniformly arranged on the circumference of the outer side of the inner wall of the immersed tube; a plurality of collapsible air cushions are uniformly arranged on the outer circumference of the outer wall of the immersed tube and are in contact with the surrounding soil body of the immersed tube, and the collapsible air cushions are communicated with the corresponding air guide branch pipes; the lower end of each air guide branch pipe is provided with an air pressure device, and the air pressure device is connected with the precast pile tip through a lifting sleeve; according to the invention, the expansion and contraction air cushion is arranged on the outer wall of the immersed tube, and the expansion and contraction air cushion is driven by high-pressure airflow to expand and act on soil around the immersed tube, so that the soil generates a reaction force on the immersed tube to push the immersed tube to move towards a preset direction, and the deviation rectification of the immersed tube is realized; the air pressure device drives the telescopic sleeve to stretch, so that the angle of the precast pile tip can be adjusted.
Description
Technical Field
The invention relates to the technical field of bridge pile foundation construction, in particular to a deviation correcting device for a pipe-sinking cast-in-place pile and a using method thereof.
Background
The piles are column-shaped members arranged in the foundation, and the pile foundation is classified differently according to different purposes; different types of pile foundations have respective characteristics in self construction and pile-soil action performance. The immersed tube cast-in-place pile is characterized in that a pile tube and a prefabricated pile tip are driven into soil by a pile hammer, and the action mechanism of the immersed tube cast-in-place pile on the soil is similar to that of a closed steel pipe pile arranged by a hammering method. Drawing the pipe, vibrating, pouring concrete and forming; in the pipe drawing process, the pile pipe is continuously impacted and vibrated due to the continuous low-hammer dense impact on the pile pipe, so that the concrete is compacted. In the pipe sinking process, due to the eccentricity of hammering, the existence of barriers such as a hole in a soil layer at the bottom of the pile or boulders in the soil layer easily causes the pile position to be inclined, so that the working performance of the pile foundation is difficult to achieve the design effect.
In engineering practice, the problem of inclination of the pile body of the pile foundation is not solved well, and the existing measures are only prevention and maintenance. If the pile body is inclined in the pile sinking process, the pile needs to be stopped and checked immediately, and the next construction can be carried out until the problem is solved and the verticality of the pile body meets the requirement, wherein at present, the main deviation correcting methods comprise the following steps: (1) removing soil and adding heavy objects on the high side; backfilling sandstone on a low side, and applying horizontal force to the pile top to centralize if necessary; (2) local excavation can be adopted and then the treatment is carried out by a jack deviation rectifying and resetting method; (3) a soil-changing foundation is made under the bearing platform, soil with a certain depth is dug out before the construction of the pile foundation bearing platform, sand and stone filling and layered tamping filling are replaced, and then a construction platform is built on the artificial foundation and the pile foundation; cement-soil piles are additionally arranged among the piles to form a composite foundation; firstly, the method needs to perform deviation correction after stopping piling, cannot correct pile positions during construction, and severely stops the construction progress of the project; after the construction period is delayed, the stress state and the soil strength characteristic in the foundation soil are changed, and different from the soil stress state in the scheme design, the pile foundation sinking process is likely to encounter other difficulties, so that the construction scheme is changed and the like.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a deviation correcting device for a pipe-sinking cast-in-place pile and a using method thereof, and aims to solve the problems that pile position deviation correction cannot be realized simultaneously in the cast-in-place pile construction process, the deviation correcting effect is poor, and the difficulty is high.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a deviation correcting device for a immersed tube cast-in-place pile, which comprises a double-acting air hammer, a plurality of high-pressure fans, a main air guide pipe, a branch air guide pipe, an expansion air cushion, an air pressure device and a lifting sleeve, wherein the double-acting air hammer is connected with the air guide pipe through a pipeline; the double-acting pneumatic hammer is arranged at the top of the sinking pipe, and the output end of the double-acting pneumatic hammer is connected with the top end of the sinking pipe; the immersed tube comprises an immersed tube outer wall and an immersed tube inner wall, and the immersed tube outer wall is sleeved on the outer side of the immersed tube inner wall;
a plurality of high-pressure fans are uniformly distributed around the immersed tube, and an air outlet of each high-pressure fan is connected with an air guide main pipe; the air outlet of the air guide main pipe is connected with a plurality of air guide branch pipes, the air guide branch pipes are uniformly arranged on the circumference of the outer side of the inner wall of the immersed tube, and the axes of the air guide branch pipes are parallel to the axis of the immersed tube;
a plurality of collapsible air cushions are uniformly arranged on the outer circumference of the outer wall of the immersed tube and are in contact with the surrounding soil body of the immersed tube, and air inlets of the collapsible air cushions are communicated with the corresponding air guide branch pipes;
the lower end of each air guide branch pipe is provided with an air pressure device, an air inlet of the air pressure device is connected with the air guide branch pipe, the output end of the air pressure device is connected with the upper end of a lifting sleeve, and the lower end of the lifting sleeve is connected with a prefabricated pile tip; the lifting sleeves are uniformly distributed along the outer circumference of the inner wall of the immersed tube.
The pipe top deviation correcting device is sleeved on the outer side of the immersed pipe and is fixedly connected with the ground; the pipe top deviation correcting device comprises a movable buckle, a movable rod, a sleeve box, a power device, a displacement measuring device and a fixed pin;
two ends of the movable buckle are respectively provided with a movable rod, the two movable rods are horizontally arranged in parallel, and the two ends of the movable buckle are respectively connected with the movable rods in a sliding manner; the movable retaining rings comprise a first semicircular movable retaining ring and a second semicircular movable retaining ring, and the first semicircular movable retaining ring and the second semicircular movable retaining ring are symmetrically arranged on two sides of the immersed tube and are closely attached to the immersed tube; two ends of the two movable rods are respectively and fixedly connected together through a sleeve box, two ends of the sleeve box are fixedly arranged on the fixed feet, and the fixed feet are fixedly arranged on the ground;
the displacement detection device is arranged between the first semicircular moving retaining ring or the second semicircular moving retaining ring and the end part of the movable rod and used for detecting the displacement of the first semicircular moving retaining ring or the second semicircular moving retaining ring on the movable rod, the output end of the displacement detection device is connected with the power device, the power device is fixedly arranged on the first semicircular moving retaining ring or the second semicircular moving retaining ring, and the power device is used for driving the first semicircular moving retaining ring or the second semicircular moving retaining ring to move on the movable rod.
Furthermore, a hammer pad is arranged between the double-acting pneumatic hammer and the immersed tube; the upper end of the hammer pad is connected with the output end of the double-acting pneumatic hammer, and the lower end of the hammer pad is fixedly connected with the top end of the immersed tube.
Furthermore, an angle measurer is arranged between the inner wall of the immersed tube and the outer wall of the immersed tube.
Furthermore, an air flow control valve is arranged between the air guide main pipe and the air guide branch pipe.
Furthermore, the immersed tube also comprises an isolation layer, and the isolation layer is arranged between the outer wall of the immersed tube and the inner wall of the immersed tube; the outer wall of the immersed tube is provided with a conduit hole, and the air inlet end of the air guide branch pipe sequentially penetrates through the isolation layer and the conduit hole and then is connected with the air guide main pipe.
Furthermore, the main wind guide pipe and the branch wind guide pipe are both rubber soft guide pipes.
Furthermore, a concave-convex groove is arranged on the contact surface of the movable retaining ring and the immersed tube.
Furthermore, the displacement detection device comprises a displacement device and a receiving plate, the displacement device is fixedly arranged at the end part of the first semicircular movable retaining ring or the second semicircular movable retaining ring, and the receiving plate is fixedly arranged at the end part of the movable rod; the displacement device is used for emitting a detection light beam and receiving a reflected detection light beam, the displacement between the first semicircular moving retaining ring or the second semicircular moving retaining ring and the end part of the movable rod is obtained according to the reflected detection light beam, and the receiving plate is used for receiving/reflecting the detection light beam.
The invention also provides a using method of the deviation correcting device for the immersed tube cast-in-place pile, which comprises the following steps:
when the immersed tube deflects to a certain direction in the sinking process, starting a high-pressure fan arranged in the inclined direction of the immersed tube, and enabling high-pressure air flow to enter the collapsible air cushion after passing through the air guide main pipe and the air guide branch pipe in sequence; the expansion and contraction air cushion expands and acts on the soil around the outer wall of the immersed tube, so that the soil generates a reaction force on the immersed tube to push the immersed tube to deviate in the opposite direction of the inclination direction of the immersed tube, and the deviation rectification of the immersed tube is realized;
and controlling the high-pressure air flow to enter the air pressure device, and adjusting the telescopic amount of the lifting sleeve through the air pressure device so as to drive the precast pile tip to be adjusted to a preset angle.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a deviation correcting device for a immersed tube cast-in-place pile, which is characterized in that an expansion air cushion is arranged on the outer wall of an immersed tube, the expansion air cushion is driven to expand by high-pressure air flow, and the expanded expansion air cushion acts on soil around the immersed tube, so that the soil generates a reaction force on the immersed tube, the immersed tube is pushed to move towards a preset direction, and the deviation correction of the immersed tube is realized; meanwhile, the air pressure device and the telescopic sleeve are arranged, and the telescopic sleeve is driven to stretch by the air pressure device, so that the angle of the precast pile tip is adjusted; according to the invention, the disturbance to the surrounding soil body when the immersed tube is hammered is reduced by adopting the collapsible air cushion, a certain cushioning effect is achieved, and the construction of other piles is facilitated; meanwhile, the influence on surrounding buildings during construction is reduced, the frictional resistance between the immersed tube and the soil body is increased, and sudden sinking of the immersed tube is prevented.
Furthermore, when the immersed tube is inclined at an angle, the power device drives the movable retaining ring to move left and right on the movable rod, and the sleeve box moves back and forth, so that the immersed tube is driven to move front and back, left and right, and further the deviation correction of the immersed tube is realized; through setting up displacement detection device, realized the real-time detection to removing the retaining ring displacement to with the testing result scope feedback, adjust removing the retaining ring, improved the accuracy and the flexibility of rectifying the result.
Furthermore, the hammer pad is arranged between the double-acting pneumatic hammer and the immersed tube, so that the force generated by hammering is uniformly and downwards transferred, and the inclined immersed tube caused by uneven force transfer is prevented; the shock absorption and the maximized downward force transmission can be realized, and the top of the immersed tube can be prevented from being damaged.
Furthermore, an isolation layer is arranged between the outer wall of the immersed tube and the inner wall of the immersed tube, so that external sundries are prevented from entering the inside of the immersed tube.
Furthermore, the concave-convex groove is formed in the surface of the movable retaining ring, so that the friction force between the movable retaining ring and the immersed tube is effectively improved, the effect of fixing the immersed tube is achieved, the pile top deviation correcting device does not need to consume redundant power, and the deviation correction of the immersed tube is achieved.
The invention also provides a use method of the deviation correcting device for the immersed tube cast-in-place pile, when the immersed tube inclines at an angle, the air pressure of the high-pressure air flow is adjusted to control the collapsible air cushion to correct the angle, and the inclination angle is prevented from becoming larger and larger; the deviation rectifying process can be continuously carried out in the construction process, the problems of construction period delay and change of stress state in soil caused by stopping piling maintenance are avoided, the using method is simple, and the deviation rectifying effect is good.
Drawings
FIG. 1 is a front cross-sectional view of a sinking pipe of the deviation correcting device for a sinking pipe cast-in-place pile according to the present invention;
FIG. 2 is a rear section view of a sinking pipe of the deviation correcting device for a sinking pipe cast-in-place pile according to the present invention;
FIG. 3 is a top sectional partial schematic view of a deviation rectifying device for a driven cast-in-place pile according to the present invention;
FIG. 4 is a schematic top view of a deviation rectifying device for a driven cast-in-place pile according to the present invention;
FIG. 5 is a schematic structural view of a collapsible air cushion in the deviation rectifying device for a cast-in-place pile according to the present invention;
FIG. 6 is a schematic view of the working state of the collapsible air cushion in the deviation rectifying device for the cast-in-place pile;
FIG. 7 is a schematic perspective view of a top-pouring deviation correcting device in the deviation correcting device for a driven cast-in-place pile according to the present invention;
FIG. 8 is an enlarged schematic view of a displacement device of the deviation rectifying device for a driven cast-in-place pile according to the present invention;
FIG. 9 is a schematic perspective view of an air pressure device in the deviation correcting device for a driven cast-in-place pile according to the present invention;
FIG. 10 is a schematic structural diagram of an angle measuring device of the deviation rectifying device for a driven cast-in-place pile according to the present invention;
FIG. 11 is an enlarged view of an angle measurer in the deviation rectifying device for a driven cast-in-place pile according to the present invention;
FIG. 12 is a schematic structural diagram of a tube body of a tube-sinking cast-in-place pile deviation correcting device according to the present invention;
fig. 13 is a state diagram a of the deviation rectifying device for a driven cast-in-place pile according to the present invention;
fig. 14 is a using state diagram b of the deviation rectifying device for the driven cast-in-place pile according to the present invention.
Wherein, 1 double pneumatic hammers, 2 hammer pads, 3 high-pressure fans, 4 wind guide main pipes, 5 wind flow control valves, 6 wind guide branch pipes, 7 collapsible air cushions, 8 air pressure devices, 9 lifting sleeves, 10 immersed pipes, 11 prefabricated pile tips, 12 pipe top deviation rectifying devices and 13 angle measuring devices; 101, 102, 103 and 104 conduit holes; 121 moving retaining rings, 122 moving rods, 123 suitcases, 124 power devices, 125 displacement detection devices, 126 fixing feet and 127 concave-convex grooves; 1251 displacement means, 1252 receiving plate; 131 base, 132 rotation shaft, 133 swing shaft, 134 swing line, 135 swing block.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in the attached drawings 1-14, the invention provides a deviation correcting device for a immersed tube cast-in-place pile, which comprises a double-acting air hammer 1, a hammer pad 2, a plurality of high-pressure fans 3, an air guide main pipe 4, an air flow control valve 5, an air guide branch pipe 6, an expansion air cushion 7, an air pressure device 8, a lifting sleeve 9, a pipe top deviation correcting device 12 and an angle measurer 13;
the double-acting pneumatic hammer 1 is arranged at the top of the sinking pipe 10, the hammer pad 2 is arranged between the double-acting pneumatic hammer 1 and the sinking pipe 10, the output end of the double-acting pneumatic hammer 1 is connected with the upper end of the hammer pad 2, and the lower end of the hammer pad 2 is fixedly connected with the top end of the sinking pipe 10.
The immersed tube 10 comprises an immersed tube outer wall 101, an immersed tube inner wall 102 and an isolation layer 103, wherein the immersed tube outer wall 101 is sleeved on the outer side of the immersed tube inner wall 102; the isolation layer 103 is arranged between the outer wall 101 of the immersed tube and the inner wall 102 of the immersed tube and is used for preventing external impurities from entering the interior of the immersed tube 10; the bottom end of the immersed tube 10 is provided with a precast pile tip 11, and the precast pile tip 11 is movably connected with the immersed tube 10.
A plurality of high-pressure fans 3 are uniformly distributed on the ground around the immersed tube 10, and an air outlet of each high-pressure fan 3 is connected with an air guide main pipe 4; an air outlet of the air guide main pipe 4 is connected with a plurality of air guide branch pipes 6, and an air flow control valve 5 is arranged between the air guide branch pipes 6 and the air guide main pipe 4; the wind guide branch pipes 6 sequentially penetrate through the guide pipe holes 104 and the isolation layer 103 on the outer wall 101 of the immersed tube and are uniformly arranged on the outer circumference of the inner wall 102 of the immersed tube, and the axis of the wind guide branch pipes 6 is parallel to the axis of the immersed tube 10; the main wind guide pipe 4 and the branch wind guide pipe 6 are both rubber soft pipes.
A plurality of collapsible air cushions 7 are uniformly arranged on the outer circumference of the outer wall 101 of the immersed tube, one end of each collapsible air cushion 7 is communicated with the corresponding air guide branch pipe 6, and the other end of each collapsible air cushion is in contact with the soil around the outer wall 101 of the immersed tube;
the lower end of each air guide branch pipe 6 is provided with an air pressure device 8, and a plurality of air pressure devices 8 are uniformly distributed on the outer circumference of the inner wall 102 of the immersed tube; an air inlet of the air pressure device 8 is connected with the air guide branch pipe 6, an output end of the air pressure device 8 is connected with the upper end of the lifting sleeve 9, and the lower end of the lifting sleeve 9 is connected with the prefabricated pile tip 11; the lifting sleeves 9 are evenly distributed along the outer circumference of the inner wall 102 of the immersed tube.
The pipe top deviation correcting device 12 is sleeved on the outer side of the immersed pipe 10 and is fixedly connected with the ground; the tube top deviation correcting device 12 comprises a movable retaining ring 121, a movable rod 122, a sleeve box 123, a power device 124, a displacement measuring device 125 and a fixed foot 126;
two ends of the movable buckle 121 are respectively provided with a movable rod 122, the two movable rods 122 are horizontally arranged in parallel, and two ends of the movable buckle 121 are respectively connected with the movable rods 122 in a sliding manner; the movable retaining ring 121 comprises a first semicircular movable retaining ring and a second semicircular movable retaining ring, and the first semicircular movable retaining ring and the second semicircular movable retaining ring are symmetrically arranged at two sides of the immersed tube 10 and are closely attached to the immersed tube 10; two ends of the two movable rods 122 are respectively and fixedly connected together through a sleeve box 123, two ends of the sleeve box 123 are fixedly arranged on a fixed foot 126, and the fixed foot 126 is fixedly arranged on the ground;
a displacement detection device is arranged between the first semicircular moving snap ring or the second semicircular moving snap ring and the end part of the movable rod 122 and is used for detecting the displacement of the first semicircular moving snap ring or the second semicircular moving snap ring on the movable rod 122, the output end of the displacement detection device 125 is connected with a power device 124, the power device 124 is fixedly arranged on the first semicircular moving snap ring or the second semicircular moving snap ring, and the power device 124 is used for driving the first semicircular moving snap ring or the second semicircular moving snap ring to move on the movable rod 122.
The concave-convex groove 127 is arranged on the contact surface of the first semicircular movable retaining ring or the second semicircular movable retaining ring and the immersed tube 10, so that the friction force between the movable retaining ring and the immersed tube is effectively improved, the effect of fixing the immersed tube is achieved, the pile top deviation correcting device does not need to consume redundant power consumption, and the deviation correction of the immersed tube is achieved.
The displacement detecting device 125 comprises a displacement device 1251 and a receiving plate 1252, the displacement device 1521 is fixedly arranged at the end of the first semicircular moving buckle or the second semicircular moving buckle, and the receiving plate 1252 is fixedly arranged at the end of the movable rod 122; the displacement device 1521 is configured to emit a detection light beam and receive a reflected detection light beam, and obtain a displacement between the first semicircular moving retaining ring or the second semicircular moving retaining ring and the end of the movable rod 122 according to the reflected detection light beam, and the receiving plate 1252 is configured to receive/reflect the detection light beam.
The angle measurer 13 is arranged between the inner wall 102 and the outer wall 101 of the immersed tube; the angle measurer 13 includes a base 131, a rotation shaft 132, a swing shaft 133, a swing line 134, and a swing block 135; the base 131 is fixedly installed on the outer side of the inner wall 102 of the immersed tube, the rotating shaft 132 is fixedly installed on the base 131, and the rotating shaft 132 is arranged along the radial direction of the immersed tube 10; the swing shaft 133 is vertically arranged, the upper end of the swing shaft 133 is rotatably connected with the rotating shaft 132, and the lower end of the swing shaft 133 is connected with the swing block 135 through a swing line 134.
Working principle and using method
After the pile position is determined, a plurality of high-pressure fans are uniformly arranged on the periphery of the ground of the sinking pipe, the high-pressure fans are started, air flow blown out by the high-pressure fans is discharged from air exhaust nozzles of the fans and is transmitted through the air guide main pipe and the air guide branch pipe, and whether the air flow enters the air guide branch pipe in the sinking pipe or not is controlled by the air flow control valve. In the process, the air guide branch pipe sequentially passes through the guide pipe hole and the isolation layer.
Arranging a pipe top deviation correcting device on the ground, and inserting the device into the ground by a fixing foot to fix the device; an angle measurer is arranged between the outer wall of the immersed tube and the inner wall of the immersed tube and is used for measuring the deflection angle when the immersed tube deflects.
Under the hammering action of the double-acting pneumatic hammer, the immersed tube begins to sink, and the prefabricated pile tip immediately enters the soil; the hammer pad is arranged, so that the force is uniformly transmitted downwards continuously, and the situations of lateral inclination and the like caused by uneven stress of the immersed tube are prevented.
If a small-angle deflection condition occurs in the pipe sinking process, opening an air flow control valve in the pipe sinking inclination direction, and enabling high-pressure air flow to enter an air guide branch pipe in the pipe sinking process; at the moment, the collapsible air cushion begins to expand and act on the soil around the outer wall of the immersed tube, so that the soil generates a reaction force on the immersed tube, the upper part of the immersed tube is pushed to move in the direction opposite to the inclination direction of the immersed tube, and the small-angle deviation correction is carried out on the immersed tube.
Meanwhile, the precast pile tip is also inclined due to the inclination of the immersed tube, and at the moment, the air is inflated through the rubber soft guide tube in the opposite direction of the inclination direction of the immersed tube, so that the air pressure device is controlled, and the lifting sleeve is adjusted to act on the precast pile tip, so that the pile tip is adjusted to a preset angle.
The movable retaining ring is moved at the top of the immersed tube to clamp the immersed tube, so that the friction force between the movable retaining ring and the immersed tube is effectively improved, the effect of fixing the immersed tube is achieved, the pile top deviation correcting device does not need to consume redundant power consumption, and the deviation correction of the immersed tube is realized; the power device is controlled to drive the movable retaining ring to move left and right on the movable rod, and the immersed tube moves in all directions front and back and left and right through the sleeve box to realize the deviation correction of the immersed tube.
According to the invention, the displacement device is arranged, the distance is measured through the receiving plate, and the retaining ring is adjusted and moved according to the distance to correct the deflection of the immersed tube; finally correcting the deflection of the immersed tube by adjusting the top, the upper part and the pile tip of the immersed tube.
And after the immersed tube returns to the vertical state, closing the air flow control valve and the strong power high-pressure air blower, and continuing to perform immersed tube operation until the precast pile tip reaches the preset depth.
Examples
The invention relates to a deviation correcting device for a immersed tube cast-in-place pile, which comprises a double-acting air hammer 1, a hammer pad 2, a high-pressure fan 3, an air guide main pipe 4, an air flow control valve 5, an air guide branch pipe 6, an expansion air cushion 7, an air pressure device 8, a lifting sleeve 9, a pipe top deviation correcting device 12 and an angle measuring device 13, wherein the double-acting air hammer is connected with the air guide main pipe through a pipeline;
the double-acting pneumatic hammer 1 is arranged at the top of the immersed tube 10, the output end of the double-acting pneumatic hammer 1 is vertically and downwards fixedly connected with the upper end of the hammer pad 2, and the lower end of the hammer pad 2 is fixedly connected with the top end of the immersed tube 10; the air hammer in the double-acting air hammer 1 can move up and down in the shell of the double-acting air hammer, and the top end of the immersed tube is hammered by the hammer pad 2; the double-acting pneumatic hammer 1 has high impact frequency, and the sinking pipe is pulled out after pile filling is finished, and the double-acting pneumatic hammer 1 is detached, so that the device is portable and efficient. Make double acting air hammer at the hammering process through setting up hammer bolster 2, the even downward transmission of power of production prevents to pass the inclined of immersed tube that the power inequality leads to because of, can the shock attenuation can maximize pass power downwards again, can also avoid the immersed tube top to be broken by beating simultaneously.
The high-pressure fans 3 adopt four strong-power high-pressure air blowers, the four strong-power high-pressure air blowers are arranged on the ground around the immersed tube, and the included angle between every two adjacent strong-power high-pressure air blowers is 90 degrees; the air outlet of each high-pressure fan 3 is connected with an air guide main pipe 4, and a strong-power high-pressure air blower is used for strong wind power and is a main power source for correcting the inclination of the immersed tube; the high-pressure air flow of the high-power high-pressure air blower is discharged through an air outlet nozzle of the air blower.
An air outlet of the air guide main pipe 4 is connected with a plurality of air guide branch pipes 6, and an air flow control valve 5 is arranged between the air guide branch pipes 6 and the air guide main pipe 4; the wind guide branch pipes 6 sequentially penetrate through the guide pipe holes 104 and the isolation layer 103 on the outer wall 101 of the immersed tube and are uniformly arranged on the outer circumference of the inner wall 102 of the immersed tube, and the axis of the wind guide branch pipes 6 is parallel to the axis of the immersed tube 10; the wind guide main pipe 4 and the wind guide branch pipe 6 both adopt rubber soft pipes, have better elasticity and strength, and can stably and continuously convey wind power.
A plurality of collapsible air cushions 7 are uniformly arranged on the outer circumference of the outer wall 101 of the immersed tube, one end of each collapsible air cushion 7 is communicated with the corresponding air guide branch pipe 6, and the other end of each collapsible air cushion is in contact with the soil around the outer wall 101 of the immersed tube;
the lower end of each air guide branch pipe 6 is provided with an air pressure device 8, and a plurality of air pressure devices 8 are uniformly distributed on the outer circumference of the inner wall 102 of the immersed tube; an air inlet of the air pressure device 8 is connected with the air guide branch pipe 6, an output end of the air pressure device 8 is connected with the upper end of the lifting sleeve 9, and the lower end of the lifting sleeve 9 is connected with the prefabricated pile tip 11; the lifting sleeves 9 are evenly distributed along the outer circumference of the inner wall 102 of the immersed tube.
The pipe top deviation correcting device 12 is sleeved on the outer side of the immersed pipe 10 and is fixedly connected with the ground; the tube top deviation correcting device 12 comprises a movable retaining ring 121, a movable rod 122, a sleeve box 123, a power device 124, a displacement measuring device 125 and a fixed foot 126; two ends of the movable buckle 121 are respectively provided with a movable rod 122, the two movable rods 122 are horizontally arranged in parallel, and two ends of the movable buckle 121 are respectively connected with the movable rods 122 in a sliding manner; the movable retaining ring 121 comprises a first semicircular movable retaining ring and a second semicircular movable retaining ring, and the first semicircular movable retaining ring and the second semicircular movable retaining ring are symmetrically arranged at two sides of the immersed tube 10 and are closely attached to the immersed tube 10; two ends of the two movable rods 122 are respectively and fixedly connected together through a sleeve box 123, two ends of the sleeve box 123 are fixedly arranged on a fixed foot 126, and the fixed foot 126 is fixedly arranged on the ground;
a displacement detection device 125 is arranged between the first semicircular mobile buckle or the second semicircular mobile buckle and the end of the movable rod 122 and is used for detecting the displacement of the first semicircular mobile buckle or the second semicircular mobile buckle on the movable rod 122, the output end of the displacement detection device 125 is connected with a power device 124, the power device 124 is fixedly arranged on the first semicircular mobile buckle or the second semicircular mobile buckle, and the power device 124 is used for driving the first semicircular mobile buckle or the second semicircular mobile buckle to move on the movable rod 122 according to the detection result of the displacement detection device 125; the contact surface of the movable retaining ring 121 and the sinking tube 10 is provided with a concave-convex groove 127.
The displacement detecting device 125 comprises a displacement device 1251 and a receiving plate 1252, the displacement device 1521 is fixedly arranged at the end part of the first semicircular moving buckle or the second semicircular moving buckle, and the receiving plate 1252 is fixedly arranged at the end part of the casing 123; the displacement device 1521 is configured to emit a detection light beam and receive a reflected detection light beam, and obtain a displacement between the first semicircular moving retaining ring or the second semicircular moving retaining ring and the end of the movable rod 122 according to the reflected detection light beam, and the receiving plate 1252 is configured to receive/reflect the detection light beam.
The angle measurer 13 is arranged between the inner wall 102 and the outer wall 101 of the immersed tube; if the angle measurer 13 is not attached to the immersed tube any more, the immersed tube is proved to be deflected, and whether the immersed tube is deflected or not is judged by utilizing whether the angle measurer and the pile body are in an angle relation or not.
The deviation correcting device for the immersed tube cast-in-place pile realizes the measurement of the deflection angle of the immersed tube through the angle measurer inside the immersed tube; the expansion air cushion can reduce the disturbance to the surrounding soil body when the immersed tube is hammered, plays a certain role in buffering vibration, facilitates the construction of other piles, simultaneously reduces the influence on surrounding buildings during construction and increases the frictional resistance between the immersed tube and the soil body, and prevents the immersed tube from suddenly sinking. When the immersed tube is inclined at a small angle, the air pressure can be timely adjusted to control the expansion and contraction air cushion to correct the angle, the inclined angle is prevented from becoming larger and larger, and the process can be continuously carried out in the construction process, so that the problems of construction period delay, change of stress state in soil and the like caused by stopping piling maintenance are avoided; in addition, the accuracy of the deviation correction can be improved through the pipe top deviation correcting device, specifically, the power device drives the movable retaining ring to move left and right on the movable rod, and the sleeve box moves back and forth, so that the driving of the front and back and left and right movement of the immersed pipe is realized, and further the deviation correction of the immersed pipe is realized; the displacement detection device is arranged, so that the displacement of the movable retaining ring is detected in real time, the detection result range is fed back, and the movable retaining ring is adjusted and corrected; the deflection state of the pile tip is effectively adjusted through the air pressure device and the telescopic sleeve.
The concrete use steps of the deviation correcting device for the driven cast-in-place pile in the embodiment are as follows:
step 1: after the pile position is determined, four strong power high-pressure blowers are arranged around the ground of the immersed tube to be sunk and are mutually arranged at an angle of 90 degrees; the strong power high pressure blower is started to make the air flow blown out by the blower exhaust nozzle and transmitted by the air guide main pipe, and the air flow control valve controls whether the air flow enters the air guide branch pipe in the immersed tube. In the process, the 6-rubber soft conduit sequentially passes through the conduit hole and the isolation layer;
step 2: arranging a pipe top deviation correcting device on the ground, wherein the pipe top deviation correcting device is inserted into soil by a fixing foot and is fixed; an angle measurer is arranged between the outer wall of the immersed tube and the inner wall of the immersed tube, so that the deflection angle of the immersed tube when the immersed tube deflects is measured; under the hammering action of the double-acting pneumatic hammer, the immersed tube begins to sink, and the prefabricated pile tip immediately enters the soil;
step 2: if the pipe sinking process has a small-angle deflection condition as shown in fig. 13 or fig. 14, opening the air flow control valve in the pipe sinking inclination direction, and then enabling the air flow to enter the air guide branch pipe inside the pipe sinking; at the moment, the collapsible air cushion begins to expand and act on the soil body around the outer wall of the immersed tube, so that the soil body generates a reaction force on the immersed tube, the upper part of the immersed tube is pushed to move oppositely, and small-angle deviation correction is carried out on the immersed tube.
Meanwhile, the prefabricated pile tip is also inclined due to the inclination of the immersed tube, the air pressure device is inflated on the other inclined surface of the immersed tube through the air guide branch tube, and the lifting sleeve is adjusted to act on the prefabricated pile tip through the air pressure device so that the pile tip is adjusted to a normal angle;
moving a movable retaining ring at the top of the immersed tube to clamp the immersed tube, and increasing the friction force between the immersed tube and the retaining ring;
the retaining ring moves left and right on the movable rod and is controlled by the power device; the deviation correcting device moves back and forth through the sleeve box. The displacement device is arranged on the device, the distance is measured through the receiving plate, and then the retaining ring is adjusted and moved according to the distance to correct the deflection of the immersed tube.
The deflection of the immersed tube is finally corrected by adjusting the top, the upper part and the pile tip of the immersed tube.
And 4, step 4: and after the immersed tube returns to the vertical state, closing the air flow control valve and the strong power high-pressure air blower, and continuing to perform immersed tube operation until the precast pile tip reaches the preset depth.
The above description is only illustrative of the preferred embodiments of the present invention, and any structural changes, improvements, modifications, etc. made without departing from the principle of the present invention are deemed to be within the scope of the present invention.
Claims (10)
1. A deviation correcting device for a immersed tube cast-in-place pile is characterized by comprising a double-acting air hammer (1), a plurality of high-pressure fans (3), an air guide main pipe (4), an air guide branch pipe (6), an expansion air cushion (7), an air pressure device (8) and a lifting sleeve (9); the double-acting pneumatic hammer (1) is arranged at the top of the immersed tube (10), and the output end of the double-acting pneumatic hammer (1) is connected with the top end of the immersed tube (10); the immersed tube (10) comprises an immersed tube outer wall (101) and an immersed tube inner wall (102), and the immersed tube outer wall (101) is sleeved on the outer side of the immersed tube inner wall (102);
a plurality of high-pressure fans (3) are uniformly distributed around the immersed tube (10), and an air outlet of each high-pressure fan (3) is connected with an air guide main pipe (4); the air outlet of the air guide main pipe (4) is connected with a plurality of air guide branch pipes (6), the plurality of air guide branch pipes (6) are uniformly arranged on the circumference of the outer side of the inner wall (102) of the immersed tube, and the axes of the air guide branch pipes (6) are parallel to the axis of the immersed tube (10);
a plurality of collapsible air cushions (7) are uniformly arranged on the outer circumference of the outer wall (101) of the immersed tube and are in contact with the surrounding soil body of the immersed tube (10), and the air inlets of the collapsible air cushions (7) are communicated with the corresponding air guide branch tubes (6);
the lower end of each air guide branch pipe (6) is provided with an air pressure device (8), an air inlet of the air pressure device (8) is connected with the air guide branch pipe (6), the output end of the air pressure device (8) is connected with the upper end of a lifting sleeve (9), and the lower end of the lifting sleeve (9) is connected with a precast pile tip (11); the lifting sleeves (9) are uniformly distributed along the outer circumference of the inner wall (102) of the immersed tube.
2. The deviation correcting device for the immersed tube bored concrete pile according to claim 1, further comprising a tube top deviation correcting device (12), wherein the tube top deviation correcting device (12) is sleeved outside the immersed tube (10) and is fixedly connected with the ground; the pipe top deviation correcting device (12) comprises a movable retaining ring (121), a movable rod (122), a sleeve box (123), a power device (124), a displacement measuring device (125) and a fixed foot (126);
two ends of the movable buckle (121) are respectively provided with a movable rod (122), the two movable rods (122) are horizontally arranged in parallel, and the two ends of the movable buckle (121) are respectively connected with the movable rods (122) in a sliding manner; the movable retaining ring (121) comprises a first semicircular movable retaining ring and a second semicircular movable retaining ring, and the first semicircular movable retaining ring and the second semicircular movable retaining ring are symmetrically arranged at two sides of the immersed tube (10) and are closely attached to the immersed tube (10); two ends of the two movable rods (122) are respectively and fixedly connected together through a sleeve box (123), two ends of the sleeve box (123) are fixedly arranged on the fixed feet (126), and the fixed feet (126) are fixedly arranged on the ground;
a displacement detection device (125) is arranged between the first semicircular moving retaining ring or the second semicircular moving retaining ring and the end part of the movable rod (122) and used for detecting the displacement of the first semicircular moving retaining ring or the second semicircular moving retaining ring on the movable rod (122), the output end of the displacement detection device (125) is connected with a power device (124), the power device (124) is fixedly arranged on the first semicircular moving retaining ring or the second semicircular moving retaining ring, and the power device (124) is used for driving the first semicircular moving retaining ring or the second semicircular moving retaining ring to move on the movable rod (122).
3. A deviation rectifying device for a driven cast-in-place pile according to claim 1, characterized in that a hammer pad (2) is further arranged between the double pneumatic hammer (1) and the driven pipe (10); the upper end of the hammer pad (2) is connected with the output end of the double-acting pneumatic hammer (1), and the lower end of the hammer pad (2) is fixedly connected with the top end of the immersed tube (10).
4. A deviation rectifying device for a driven cast-in-place pile according to claim 1, characterized in that an angle measurer (13) is arranged between the inner (102) and outer (101) immersed tube walls.
5. The deviation rectifying device for the driven cast-in-place pile according to claim 1, wherein an air flow control valve (5) is arranged between the air guide main pipe (4) and the air guide branch pipe (6).
6. A deviation rectifying device for a driven cast-in-place pile according to claim 1, characterized in that the driven pipe (10) further comprises an insulating layer (103), the insulating layer (103) is arranged between the driven pipe outer wall (101) and the driven pipe inner wall (102); the outer wall (101) of the immersed tube is provided with a conduit hole (104), and the air inlet end of the air guide branch pipe (6) sequentially penetrates through the isolation layer (103) and the conduit hole (104) and then is connected with the air guide main pipe (4).
7. The deviation rectifying device for the driven cast-in-place pile according to claim 1, wherein the main wind guiding pipe (4) and the branch wind guiding pipes (6) are rubber flexible pipes.
8. A deviation rectifying device for a driven cast-in-place pile according to claim 2, characterized in that the contact surface of the movable snap ring (121) and the driven pipe (10) is provided with a concave-convex groove (127).
9. A deviation rectifying device for a driven cast-in-place pile according to claim 2, characterized in that the displacement detecting device (125) comprises a displacement device (1251) and a receiving plate (1252), the displacement device (1521) is fixedly arranged at the end of the first semicircular moving clasp or the second semicircular moving clasp, the receiving plate (1252) is fixedly arranged at the end of the movable rod (122); the displacement device (1521) is used for emitting a detection light beam and receiving a reflected detection light beam, the displacement between the first semicircular moving retaining ring or the second semicircular moving retaining ring and the end part of the movable rod (122) is obtained according to the reflected detection light beam, and the receiving plate (1252) is used for receiving/reflecting the detection light beam.
10. Use of a deviation rectifying device for a driven cast-in-place pile according to any one of claims 1-9, characterized in that it comprises the following steps:
when the immersed tube deflects to a certain direction in the sinking process, starting a high-pressure fan arranged in the inclined direction of the immersed tube, and enabling high-pressure air flow to enter the collapsible air cushion after passing through the air guide main pipe and the air guide branch pipe in sequence; the expansion and contraction air cushion expands and acts on the soil around the outer wall of the immersed tube, so that the soil generates a reaction force on the immersed tube to push the immersed tube to deviate in the opposite direction of the inclination direction of the immersed tube, and the deviation rectification of the immersed tube is realized;
and controlling the high-pressure air flow to enter the air pressure device, and adjusting the telescopic amount of the lifting sleeve through the air pressure device so as to drive the precast pile tip to be adjusted to a preset angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911316071.1A CN110872840A (en) | 2019-12-19 | 2019-12-19 | Deviation correcting device for immersed tube cast-in-place pile and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911316071.1A CN110872840A (en) | 2019-12-19 | 2019-12-19 | Deviation correcting device for immersed tube cast-in-place pile and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110872840A true CN110872840A (en) | 2020-03-10 |
Family
ID=69717706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911316071.1A Pending CN110872840A (en) | 2019-12-19 | 2019-12-19 | Deviation correcting device for immersed tube cast-in-place pile and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110872840A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202104A (en) * | 2021-05-06 | 2021-08-03 | 中山大学 | Grouting plugging method for offshore wind turbine pile foundation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103915A (en) * | 1993-07-29 | 1995-06-21 | 三台县地质勘探队 | Process and equipment for settling pipe and pouring concrete pile in situ |
| CN103437348A (en) * | 2013-08-28 | 2013-12-11 | 深圳市福田建安建设集团有限公司 | Construction device and method of pile peripheral cemented soil cast-in-place stiffness core pile |
| CN103510511A (en) * | 2013-09-26 | 2014-01-15 | 鸿厦建设有限公司 | Top-reinforced cast-in-place concrete thin-wall pipe pile and construction method |
| CN109137904A (en) * | 2018-09-19 | 2019-01-04 | 长安大学 | One kind preventing the inclined device of driven cast-in-place pile and construction method |
| CN109778838A (en) * | 2018-12-29 | 2019-05-21 | 浙江万川装饰设计工程有限公司 | A kind of mounting device of municipal works prefabricated tubular pile and pile cover |
| CN211773631U (en) * | 2019-12-19 | 2020-10-27 | 长安大学 | Deviation correcting device for immersed tube cast-in-place pile |
-
2019
- 2019-12-19 CN CN201911316071.1A patent/CN110872840A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103915A (en) * | 1993-07-29 | 1995-06-21 | 三台县地质勘探队 | Process and equipment for settling pipe and pouring concrete pile in situ |
| CN103437348A (en) * | 2013-08-28 | 2013-12-11 | 深圳市福田建安建设集团有限公司 | Construction device and method of pile peripheral cemented soil cast-in-place stiffness core pile |
| CN103510511A (en) * | 2013-09-26 | 2014-01-15 | 鸿厦建设有限公司 | Top-reinforced cast-in-place concrete thin-wall pipe pile and construction method |
| CN109137904A (en) * | 2018-09-19 | 2019-01-04 | 长安大学 | One kind preventing the inclined device of driven cast-in-place pile and construction method |
| CN109778838A (en) * | 2018-12-29 | 2019-05-21 | 浙江万川装饰设计工程有限公司 | A kind of mounting device of municipal works prefabricated tubular pile and pile cover |
| CN211773631U (en) * | 2019-12-19 | 2020-10-27 | 长安大学 | Deviation correcting device for immersed tube cast-in-place pile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202104A (en) * | 2021-05-06 | 2021-08-03 | 中山大学 | Grouting plugging method for offshore wind turbine pile foundation |
| CN113202104B (en) * | 2021-05-06 | 2022-06-03 | 中山大学 | Grouting plugging method for offshore wind turbine pile foundation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105840207B (en) | Construction method for comprehensive tunnel entering structure of large-span tunnel penetrating shallow-buried bias-pressure loose accumulation body | |
| KR20100101568A (en) | Method and apparatus for building support piers from one or more successive lifts formed in a soil matrix | |
| JP5265809B2 (en) | Large-diameter ground drilling method and apparatus | |
| CN109137904B (en) | Device for preventing inclined of immersed tube filling pile and construction method | |
| JP2006509136A (en) | Method for building a peer in soil and a peer structure | |
| US20090269146A1 (en) | Method for Construction of Piles and Caissons and Soil Improvement by Using Rubber Hoses | |
| CN211773631U (en) | Deviation correcting device for immersed tube cast-in-place pile | |
| CN104314078A (en) | Concrete pile construction equipment and construction method thereof | |
| CN110872840A (en) | Deviation correcting device for immersed tube cast-in-place pile and using method thereof | |
| KR20210156418A (en) | Apparatus for combine caisson wall using a shear key and bolt | |
| CN105040692A (en) | Construction method of precast concrete pile body carrier pile | |
| JP2013002039A (en) | Air hammer device for drilling | |
| CN107938666B (en) | Pile end inner hammering pile sinking with pile shoe and synchronous end grouting structure and process | |
| CN117868116A (en) | Combined steel pipe composite pile driving method | |
| CN206090541U (en) | Impact holing's construction equipment | |
| CN104153355B (en) | The constructing device of concrete-pile and construction method thereof | |
| CN209162820U (en) | One kind preventing the inclined device of driven cast-in-place pile | |
| KR102497170B1 (en) | Hybrid internal excavation hydraulic piling system and construction method thereof: HIPS | |
| CN103104209A (en) | Device for preventing falling of accumulated soil for rotatablely excavated pile hole | |
| KR20230107099A (en) | Under reaming apparatus and under reamed pile construction method using the same | |
| CN105604060B (en) | Dam breaking opening pile jetting machine and pile jetting method thereof | |
| CN114790738A (en) | Foundation pit supporting construction device and method based on assembled large-diameter tubular piles | |
| KR102166481B1 (en) | Auger hanger with relative positioning of casing and digging unit, Sheet file piling method and Ground reinforcement method using the same | |
| CN117738172B (en) | Pile foundation steel pile casing construction method under bare rock geological condition | |
| ES2762236T3 (en) | Procedure for producing a concrete displacement pile on site and a device therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |