CN114293558A - Pile sinking device and method for assisting steel pipe pile in building - Google Patents
Pile sinking device and method for assisting steel pipe pile in building Download PDFInfo
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- CN114293558A CN114293558A CN202111605793.6A CN202111605793A CN114293558A CN 114293558 A CN114293558 A CN 114293558A CN 202111605793 A CN202111605793 A CN 202111605793A CN 114293558 A CN114293558 A CN 114293558A
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Abstract
The utility model belongs to the technical field of the building foundation reinforcement technique and specifically relates to a steel-pipe pile sinking device is assisted to building inside, the on-line screen storage device comprises a base, it is provided with the mount pad to slide on the base, it is provided with the drill bit to rotate on the mount pad, the drill bit is the cavity setting, and the one end that the mount pad was kept away from to the drill bit has seted up the apopore, be provided with on the mount pad to the water injection subassembly of water injection in the drill bit, still be provided with the drive on the mount pad the drill bit rotates the simultaneous drive the drive assembly of water injection subassembly water injection, still be provided with the suction spare that is used for clearing up mud on the base, this application has the effect of the operation that the anchor rod pile passes through the sand bed of completion static pressure more convenient and fast.
Description
Technical Field
The application relates to the technical field of building foundation reinforcement, in particular to a device and a method for assisting pile sinking of a steel pipe pile in a building.
Background
The pile sinking construction of the anchor rod static pressure pile is often used in the building foundation reinforcing engineering as a mature technology, but when the pile pressing depth is deep, due to the reason of the soil layer during pile pressing, sandy silt (hard soil layer which is difficult to press and difficult to pass through) can be encountered, and the pile pressing needs technical means to be completed.
In the book of technical scheme selection for anchor rod static pressure pile crossing sand layer in foundation reinforcement of incremental layer reconstruction of buildings in the 7 th mineral exploration engineering (rock and soil drilling engineering) in 2007, a technical scheme that wet stirring hidden lead holes and water flushing and plug removal in pipes are carried out to cross the sand layer is proposed, the scheme needs to lead holes in front of a static pressure steel pipe pile, the depth of the lead holes is deep until the lead holes pass through the sand layer, and the inventor thinks that the depth of the lead holes is deep, a large amount of mud is generated, and the density of a stirring soil body influences the bearing capacity of the pile foundation, so that the length of the pile is increased; the inventor thinks that the method almost comprises the whole process of flushing water on the barrier layer, the ground silt is accumulated, the ground cleaning amount is large, and the pile pressing efficiency is not high, so that all the methods have the problems to be improved.
Disclosure of Invention
In order to more conveniently and rapidly complete the operation of penetrating the anchor rod static pressure pile through a sand layer, the application provides a pile sinking device and method for assisting the steel pipe pile in the building.
In a first aspect, the application provides an inside supplementary steel-pipe pile sinking device of building, adopts following technical scheme:
the utility model provides an inside supplementary steel-pipe pile sinking device of building, includes the base, it is provided with the mount pad to slide on the base, it is provided with the drill bit to rotate on the mount pad, the drill bit is the cavity setting, and the drill bit keeps away from the one end of mount pad and has seted up the apopore, be provided with on the mount pad to the water injection subassembly of water injection in the drill bit, still be provided with the drive on the mount pad the drill bit rotates the simultaneous drive the drive assembly of water injection subassembly water injection, still be provided with the suction spare that is used for clearing up mud on the base.
Through adopting above-mentioned technical scheme, the drive assembly and the mount pad that slides and set up have realized the drilling operation that the drill bit is decurrent, and drive assembly drives the water injection subassembly function simultaneously, realizes moistening soil when drilling, and the brill of the drill bit of being convenient for is established, carries out the suction through inhaling out the piece and collects the processing to mud for the operation that stock static pressure pile passes through the sand bed adds convenient and fast.
Optionally, the driving assembly includes a drill rod joint rotatably disposed in the mounting seat and a transmission member for driving the drill rod joint to rotate, the drill rod joint is cylindrical, and the drill bit is coaxially and fixedly connected with the drill rod joint.
By adopting the technical scheme, the drill bit is rotatably connected with the mounting seat through the drill rod joint, and the transmission part realizes the rotation of the drill rod joint and the drill bit so as to realize the hole leading operation.
Optionally, the water injection subassembly includes the water storage storehouse, coaxial the fixing first bevel gear, the rotor frame that keep away from drill bit one end at the drill rod joint establish on the water storage storehouse inner wall and with first bevel gear engaged with second bevel gear and with the impeller of the coaxial setting of second bevel gear, the water storage storehouse includes water storage portion and power portion, first bevel gear and second bevel gear is located in the power portion, the impeller is located in the water storage portion, be provided with the water inlet on the water storage portion outer wall, be provided with the delivery port on the water storage portion diapire, the delivery port stretches into the drill rod joint intracavity.
Through adopting above-mentioned technical scheme, the runner assembly drives tool joint and rotates, first bevel gear follows the coaxial rotation of tool joint, thereby second bevel gear rotates under first bevel gear drives and drives the impeller rotation, thereby the pivoted impeller forms the negative pressure in water storage portion and inhales water from the water inlet in the water storage portion, the centrifugal force that the impeller produced is in passing through the delivery port with the water in the water storage portion and sending the drill bit, the wetting to soil is realized in the outflow of water drill bit apopore, the synchronous going on of drill bit rotation and water injection has been realized, make the guiding hole convenient and fast more.
Optionally, the base includes a bottom plate, a rack slideway vertically arranged on the bottom plate, and a rack rod for keeping the bottom plate and the rack slideway stable, and the mounting seat is slidably arranged on one side of the rack slideway departing from the rack rod.
Through adopting above-mentioned technical scheme, the mount pad slides and sets up on the rack slide, realizes the setting that can slide of mount pad, and rack drive has the characteristics that the bearing capacity is big, durable, has the auto-lock function simultaneously, has avoided the automation of mount pad to slide down, and the hack lever is used for keeping the balance between mount pad and the bottom plate for whole device is more steady.
Optionally, still be provided with on the mount pad and be used for the drive the subassembly that slides that the mount pad slided, the subassembly that slides includes that the rotation erects driving gear and drive on the mount pad the driving gear pivoted lift crank, the driving gear with rack slide meshes.
Through adopting above-mentioned technical scheme, driving gear and rack are set up into driving gear rack drive mechanism, and the reciprocating linear motion who changes the rotary motion of driving gear into the driving gear through rotating the lift crank realizes the lift of mount pad, and the lift of while through artifical controllable mode realization mount pad makes the process of drawing the hole downwards more steady.
Optionally, a drill rod is arranged between the drill rod joint and the drill bit, the drill rod is arranged in a hollow mode, two ends of the drill rod are opened, an inner cavity of the drill rod is communicated with an inner cavity of the drill bit, one end of the drill rod is fixedly connected with the drill bit, and the other end of the drill rod is fixedly connected with the drill rod joint.
By adopting the technical scheme, the whole length of the drill bit is prolonged through the drill rod, the controllability of the depth of the lead hole is realized, and the problem that the whole height of the device is required to be too high due to the fact that the depth of the lead hole is deep is avoided.
Optionally, the suction part comprises a slurry pump, one end of a feed port of the slurry pump is connected with a water pipe, the water pipe extends into the inner cavity of the steel pipe pile, and a discharge port of the slurry pump is communicated with the outside.
Through adopting above-mentioned technical scheme, the slush pump is used for the mud suction that produces in with leading hole and the moist process and collects, and the inconvenient problem of handling of mud when having reduced the leading hole for the leading hole pile sinking process is neater clean.
In a second aspect, the present application provides a construction method of a pile sinking device for assisting a steel pipe pile in a building, including the following steps:
after the preliminary pile pressing is finished, installing a steel pipe pile sinking device on one side of the steel pipe pile;
the transmission part is started, the drill rod joint is driven by the transmission part to rotate, the drill bit and the water injection assembly are driven by the drill rod joint to rotate to operate, drilling and wetting of a hard soil layer are achieved, and meanwhile, a mud pump is started to suck out wetted mud;
when the mounting seat reaches the upper part of the bottom plate, the transmission part is closed, the connection between the drill bit and the drill rod joint is disconnected, and the mounting seat is lifted to the top of the rack slideway;
installing a drill rod between the drill rod joint and the drill bit, and starting the transmission part again to perform drilling, soil wetting operation and slurry suction operation after the installation is finished;
and (5) repeating the operations of installing the drill rod and drilling until the depth required by the hole guiding is reached, and further completing pile pressing.
By adopting the technical scheme, the steel pipe pile is pressed above the hard soil layer in advance, and an auxiliary steel pipe pile sinking device is arranged on one side of the steel pipe pile; after the device is installed, a drill bit is installed on a drill rod joint, a transmission part is started, the drill rod joint is driven by the transmission part to rotate, the drill rod joint simultaneously drives the drill bit and a water injection assembly to work, soil is continuously wetted while drilling is achieved, meanwhile, a worker rotates a lifting crank, and the drill bit is drilled up and down along the axial direction of the rotary head; and (3) starting a slurry pump while drilling, and sucking out the slurry in the steel pipe pile, so that the process of leading the hole and sinking the pile is cleaner and cleaner.
When the length of the drill bit is not enough, the mounting seat is slid to the top of the rack slideway, the whole length of the drill bit is prolonged by mounting the drill rod, the transmission part is started again, further drilling is realized, and the operation is repeated until the depth required by the pilot hole is reached.
In summary, the present application includes at least one of the following beneficial technical effects:
1. pressing the steel pipe pile to stereoplasm soil layer rethread transmission part, tool joint and water injection subassembly between the cooperation setting, realizing that the drill bit draws the hole and the moist synchronous going on of soil, reduced the leading hole before the pile pressing, all will dig the problem of the waste of the time that the hole caused downwards from, reduced the problem that the hole is difficult to handle than the big mud of diameter of stake simultaneously.
2. The drill length is prolonged through the drill rod, and the problem that the device is too high and difficult to construct due to the fact that the drill length is too long is solved.
3. The mud generated in the steel pipe pile is sucked out by the mud pump, so that the process of leading the hole and sinking the pile is cleaner and cleaner, and the civilized construction is realized.
Drawings
Fig. 1 is an axial view mainly showing the overall structure of an auxiliary steel pipe pile sinking device in a building.
Fig. 2 is a partial sectional view of the water injection assembly in this embodiment.
Fig. 3 is an axial view of the structure of the driving assembly of the auxiliary steel pipe pile driving device mainly embodied in the building according to the embodiment.
Fig. 4 is a partially enlarged schematic view at a in fig. 3.
Fig. 5 is a partially enlarged schematic view at B in fig. 3.
Fig. 6 is a view showing a state of use of the pile driving device for assisting the steel pipe pile in the building.
Reference numerals: 1. a base; 11. a base plate; 12. a rack slide; 13. a frame bar; 2. a first avoidance hole; 3. a second avoidance hole; 4. a mounting seat; 41. a sliding part; 42. an installation part; 5. an ear plate; 6. rotating the hole; 7. a lifting crank; 8. a driving gear; 9. a water injection assembly; 91. a water storage bin; 911. a water storage part; 912. a power section; 92. a first bevel gear; 93. a second bevel gear; 94. an impeller; 10. a rotating shaft; 14. a water inlet; 15. a water outlet; 16. a drive assembly; 161. a drill pipe joint; 162. a transmission member; 1621. a drive motor; 1622. a first pulley; 1623. a second pulley; 1624. a transmission belt; 17. a drill stem; 18. a drill bit; 19. a water outlet hole; 20. a baffle plate; 21. a limiting hole; 22. a reversing switch; 23. a suction piece; 24. a water pipe.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses inside supplementary steel-pipe pile sinking device of building.
Referring to fig. 1, an inside supplementary steel-pipe pile sinking device of building, including base 1, base 1 is by bottom plate 11, rack slide 12 and hack lever 13 are constituteed, first dodge hole 2 and second dodge hole 3 have been seted up on bottom plate 11, rack slide 12 is vertical to be welded on bottom plate 11, and rack slide 12 is located first dodge hole 2 and second and dodge between the hole 3, hack lever 13 one end welding is on rack slide 12 keeps away from one end upper surface of bottom plate 11, the other end welding is on bottom plate 11 upper surface.
Referring to fig. 1, rack slide 12 slides and sets up and is having mount pad 4, and mount pad 4 includes sliding part 41 and installation department 42, and sliding part 41 is worn to establish by rack slide 12, and installation department 42 integrated into one piece is in sliding part 41 and deviates from one side lower part of hack lever 13, and sliding part 41 deviates from one side upper portion integrated into one piece of hack lever 13 and has two otic placodes 5, and two otic placodes 5 symmetry set up.
Referring to fig. 1, equal coaxial running through has been seted up on two otic placodes 5 and has been rotated hole 6, wears to be equipped with lift crank 7 in rotating hole 6, goes up and down to sway and be located the cover on the outer wall between two otic placodes 5 and be equipped with driving gear 8, driving gear 8 and rack slide 12 intermeshing can drive driving gear 8 through lift crank 7 and rotate to turn into the reciprocating linear motion of driving gear 8 with the rotary motion of driving gear 8, thereby drive and mount pad 4 goes up and down on rack slide 12.
Referring to fig. 1 and 2, the mounting portion 42 is provided with the driving assembly 16, the driving assembly 16 includes a drill rod joint 161 rotatably disposed on the mounting portion 42, the drill rod joint 161 is hollow and has two open ends, and two ends of the drill rod joint 161 extend out of the mounting portion 42.
Referring to fig. 1 and 2, water injection subassembly 9 is installed to one side that installation department 42 deviates from bottom plate 11, water injection subassembly 9 includes water storage tank 91, water storage tank 91 comprises water storage portion 911 and power portion 912, water storage portion 911 and power portion 912 all are the cavity setting, water storage portion 911 and power portion 912 integrated into one piece set up, be provided with delivery port 15 on the water storage portion 911 bottom surface, delivery port 15 is inserted and is established in the drilling rod joint 161 intracavity, integrated into one piece has water inlet 14 on the lateral wall that water storage portion 911 deviates from power portion 912, inlet opening and external water source intercommunication.
Referring to fig. 2, the water injection assembly 9 further includes a first bevel gear 92, a second bevel gear 93 and an impeller 94, the first bevel gear 92 is coaxially sleeved on an outer wall of one end of the drill rod joint 161 far away from the bottom plate 11, the first bevel gear 92 is located in an inner cavity of the power portion 912, the second bevel gear 93 is engaged with the first bevel gear 92, a rotating shaft 10 is rotatably arranged on an inner wall of the power portion 912, the second bevel gear 93 is fixedly sleeved on the rotating shaft 10, one end of the rotating shaft 10 facing the water storage portion 911 extends into the water storage portion 911, the impeller 94 is coaxially fixed on an outer wall of one end of the rotating shaft 10 extending into the water storage portion 911, and the impeller 94 is located in the inner cavity of the water storage portion 911.
Referring to fig. 3 and 4, the driving assembly 16 further includes a transmission member 162, the transmission member 162 includes a driving motor 1621, a first pulley 1622, a second pulley 1623 and a transmission belt 1624, the driving motor 1621 is installed on one side of the installation portion 42 departing from the floor, an output shaft of the driving motor 1621 extends out of the installation portion 42, the first pulley 1622 is fixedly sleeved on an outer wall of one end of the drill rod joint 161 facing the bottom plate 11, the second pulley 1623 is fixedly sleeved on an outer wall of one end of the output shaft of the driving motor 1621 extending out of the installation portion 42, and the transmission belt 1624 is wound on the first pulley 1622 and the second pulley 1623, so as to drive the drill rod joint 161 to rotate.
Referring to fig. 3 and 5, a drill rod 17 is connected to one end of the drill rod joint 161 facing the bottom plate 11 in a threaded manner, a drill bit 18 is connected to one end of the drill rod 17 far away from the mounting seat 4 in a threaded manner, a water outlet hole 19 is formed in the bottom of the drill bit 18, a baffle 20 is welded in the second avoiding hole 3 of the bottom plate 11, a limiting hole 21 is formed in the baffle 20 and coaxial with the drill rod 17, the drill rod 17 penetrates through the limiting hole 21, the limiting hole 21 limits the positions of the drill rod 17 and the drill bit 18, and the possibility that the drill rod 17 inclines during hole guiding is reduced.
Referring to fig. 1, a suction member 23 is installed on the upper surface of the bottom plate 11 located in the first avoiding hole 2, the suction member 23 is a slurry pump, and the suction member 23 is used for sucking slurry formed in the steel pipe pile during hole guiding, so as to keep the construction site clean and beautiful.
Referring to fig. 1, a reversing switch 22 is further installed on the frame rod 13, and the reversing switch 22 is used for controlling the opening and closing of the driving motor 1621, so that the installation of the drill rod 17 is facilitated for workers, the length of the drill bit 18 is prolonged, and the purpose of guiding the hole to the depth is achieved.
The implementation principle of the pile sinking device for the auxiliary steel pipe pile inside the building in the embodiment of the application is as follows: the hole is not led in advance, the pile is pressed to normal static earlier, if the steel-pipe pile can pass the barrier layer smoothly then do not lead the hole, if the steel-pipe pile can't pass through the barrier layer, the inside soil stopper of pile end and the local barrier layer soil body in pile bottom are stirred to supplementary pile sinking device of rethread, then static pressure pile pressing again, the steel-pipe pile can regard as the casing among the drilling process, mud does not outflow and does not influence outer soil body yet, drilling adopts drill bit 18 to stir, mud plays moist effect, the mud volume is few.
Through the cooperation setting between drive unit 162, tool joint 161 and water injection subassembly 9, realize that drill bit 18 draws hole and the moist synchronous going on of soil, reduced the guide hole before the pile pressing, all need dig the problem of the waste of the time that the hole caused from downward, reduced the difficult problem of handling of the big mud of hole diameter than the stake simultaneously.
Through drilling rod 17 extension drill bit 18 length, reduced 18 overlength of drill bit and leaded to the difficult problem of the too high construction of device, carry out the suction through the mud pump to the mud that produces in the steel-pipe pile and handle for the lead hole pile sinking process is neater clean more, has realized civilized construction.
Referring to fig. 6, the construction method of the pile sinking device for assisting the steel pipe pile in the building includes the following steps:
s1, pressing the steel pipe pile above the hard soil layer in advance, and installing an auxiliary steel pipe pile sinking device on one side of the steel pipe pile;
s2, after the device is installed, the drill bit 18 is installed on the drill rod joint 161, the transmission part 162 is started, the drill rod joint 161 rotates under the driving of the transmission part 162, the drill rod joint 161 simultaneously drives the drill bit 18 and the water injection assembly 9 to work, the soil is continuously wetted while drilling is achieved, meanwhile, a worker rotates the lifting crank 7, and the drill bit 18 is drilled up and down along the axial direction of the rotary head;
and S3, starting a slurry pump while drilling, and sucking out the slurry in the steel pipe pile, so that the pilot hole pile sinking process is cleaner and cleaner.
And S4, when the length of the drill bit 18 is not enough, the driving motor 1621 is turned off through the reversing switch 22, the mounting seat 4 is slid to the top of the rack slideway 12, the whole length of the drill bit 18 is prolonged through the installation of the drill rod 17, the transmission part 162 is started again, further drilling is realized, and the operation is repeated until the required depth of the pilot hole is reached.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides an inside supplementary steel-pipe pile sinking device of building which characterized in that: including base (1), it is provided with mount pad (4) to slide on base (1), it is provided with drill bit (18) to rotate on mount pad (4), drill bit (18) are the cavity setting, and drill bit (18) keep away from the one end of mount pad (4) and seted up apopore (19), be provided with on mount pad (4) to water injection subassembly (9) of water injection in drill bit (18), still be provided with the drive on mount pad (4) drill bit (18) rotate the simultaneous drive subassembly (16) of water injection subassembly (9) water injection, still be provided with suction piece (23) that are used for clearing up mud on base (1).
2. The pile sinking device for the auxiliary steel pipe pile in the building according to claim 1, wherein: the driving assembly (16) comprises a drill rod joint (161) rotatably arranged in the mounting seat (4) and a transmission component (162) for driving the drill rod joint (161) to rotate, the drill rod joint (161) is cylindrical, and the drill bit (18) is coaxially and fixedly connected with the drill rod joint (161).
3. The pile sinking device for the auxiliary steel pipe pile in the building according to claim 2, wherein: the water injection assembly (9) comprises a water storage bin (91), a first bevel gear (92) coaxially fixed at one end, far away from the drill bit (18), of the drill rod joint (161), an impeller (94) which is rotatably erected on the inner wall of the water storage bin (91) and is coaxially arranged with a second bevel gear (93) and a second bevel gear (93) meshed with the first bevel gear (92), wherein the water storage bin (91) comprises a water storage part (911) and a power part (912), the first bevel gear (92) and the second bevel gear (93) are located in the power part (912), the impeller (94) is located in the water storage part (911), a water inlet (14) is formed in the outer wall of the water storage part (911), a water outlet (15) is formed in the bottom wall of the water storage part (911), and the water outlet (15) extends into the inner cavity of the drill rod joint (161).
4. The pile sinking device for the auxiliary steel pipe pile in the building according to claim 1, wherein: the base (1) comprises a bottom plate (11), a rack slide way (12) vertically arranged on the bottom plate (11) and a rack rod (13) used for keeping stability between the bottom plate (11) and the rack slide way (12), and the mounting seat (4) is arranged on one side, deviating from the rack rod (13), of the rack slide way (12) in a sliding mode.
5. The pile sinking device for the auxiliary steel pipe pile in the building according to claim 4, wherein: still be provided with on mount pad (4) and be used for the drive mount pad (4) the subassembly that slides, the subassembly that slides includes the rotating turret and establishes driving gear (8) and drive on mount pad (4) driving gear (8) pivoted lift crank (7), driving gear (8) with rack slide (12) meshing.
6. The pile sinking device for the auxiliary steel pipe pile in the building according to claim 2, wherein: the drill rod joint (161) and be provided with drilling rod (17) between drill bit (18), drilling rod (17) are the cavity setting, just drilling rod (17) both ends opening, drilling rod (17) inner chamber with drill bit (18) inner chamber intercommunication, drilling rod (17) one end with drill bit (18) fixed connection, drilling rod (17) the other end with drill rod joint (161) fixed connection.
7. The pile sinking device for the auxiliary steel pipe pile in the building according to claim 1, wherein: the suction part (23) comprises a slurry pump, one end of a feed port of the slurry pump is connected with a water pipe (24), the water pipe (24) extends into the inner cavity of the steel pipe pile, and a discharge port of the slurry pump is communicated with the outside.
8. The pile sinking method for the auxiliary steel pipe pile in the building is characterized in that the pile sinking device for the auxiliary steel pipe pile in the building is adopted: the method comprises the following steps:
after the preliminary pile pressing is finished, installing an auxiliary steel pipe pile sinking device on one side of the steel pipe pile;
the transmission part (162) is started, the drill rod joint (161) is driven by the transmission part (162) to rotate, the drill bit (18) and the water injection assembly (9) are driven by the drill rod joint (161) to rotate to operate, drilling and wetting of a hard soil layer are achieved, and meanwhile, a mud pump is started to suck out wetted mud;
when the mounting seat (4) reaches the upper part of the bottom plate (11), the transmission part (162) is closed, the connection between the drill bit (18) and the drill rod joint (161) is disconnected, and the mounting seat (4) is lifted to the top of the rack slideway (12);
a drill rod (17) is arranged between the drill rod joint (161) and the drill bit (18), and after the installation is finished, the transmission part (162) is started again to carry out drilling, soil wetting operation and slurry sucking operation;
and (4) repeating the operations of installing the drill rod (17) and drilling until the depth required by the hole guiding is reached, and further completing pile pressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111605793.6A CN114293558A (en) | 2021-12-25 | 2021-12-25 | Pile sinking device and method for assisting steel pipe pile in building |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111605793.6A CN114293558A (en) | 2021-12-25 | 2021-12-25 | Pile sinking device and method for assisting steel pipe pile in building |
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| CN114293558A true CN114293558A (en) | 2022-04-08 |
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| CN202111605793.6A Pending CN114293558A (en) | 2021-12-25 | 2021-12-25 | Pile sinking device and method for assisting steel pipe pile in building |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030129A (en) * | 2022-05-25 | 2022-09-09 | 济南大学 | Pile structure suitable for soft foundation treatment and construction method thereof |
| WO2023207754A1 (en) * | 2022-04-25 | 2023-11-02 | 中交上海港湾工程设计研究院有限公司 | Construction method for cleaning mud in jacket steel pipe pile |
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| CN113818427A (en) * | 2021-11-08 | 2021-12-21 | 中铁隧道集团一处有限公司 | Hard sand layer steel pipe pile sinking assisting device and method utilizing high-pressure water jet |
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| JP2003268767A (en) * | 2002-03-13 | 2003-09-25 | St Engineering Kk | Construction method for double tube digging small diameter pile using hole excavating rod |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115030129A (en) * | 2022-05-25 | 2022-09-09 | 济南大学 | Pile structure suitable for soft foundation treatment and construction method thereof |
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