Telescopic vibroflotation device for ultra-deep pile and vibroflotation construction method for ultra-deep pile
By combining a telescopic vibratory compaction device with a high-pressure nozzle, the problems of inaccurate stone delivery and drill rod seizure in ultra-deep vibratory compaction pile construction were solved, achieving high-quality pile formation and efficient construction progress.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-02
- Publication Date
- 2026-04-03
AI Technical Summary
In current ultra-deep vibratory compaction pile construction, the construction efficiency is low, the pile quality is poor, the drill rod is prone to seizing, the stone material delivery is inaccurate, and the high-pressure water jet cleaning effect is limited, which affects the construction progress and the pile quality.
The telescopic vibratory impactor, including a detachable material rod assembly and a high-pressure nozzle, combined with a correction mechanism and a spraying assembly, achieves precise stone delivery and anti-locking of the drill rod. High-pressure water cutting and cleaning improve the efficiency and quality of hole formation.
It improves the accuracy of stone delivery, reduces drill rod seizing, ensures pile quality, enhances construction efficiency and hole formation, and reduces equipment maintenance costs.
Smart Images
Figure CN121781865A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of vibratory compaction construction technology, specifically a telescopic vibratory compaction device for ultra-deep piles and a vibratory compaction method for ultra-deep piles. Background Technology
[0002] Vibro-compactor pile construction technology can effectively improve the bearing capacity of the foundation and reduce settlement, and therefore it is widely used in the treatment of soft soil foundations in the fields of construction, transportation, and water conservancy. For deep soft soil foundations, the treatment requirements for ultra-deep vibro-compactor piles (usually referring to piles with a depth greater than 20m) are more stringent, which places higher demands on construction equipment and processes.
[0003] In current ultra-deep vibro-compactor pile construction, vibro-compactor devices are mostly operated by splicing single drill rod sections together. This means the drill rods need to be transported to the site in sections and then assembled sequentially as the drilling depth increases. This method is not only slow and labor-intensive, severely impacting construction efficiency, but also makes the drill rod joints susceptible to mud infiltration and vibration abrasion, leading to decreased sealing performance or loose connections, creating safety hazards. Current techniques rely on high-power vibro-compactors during hole drilling, which cannot be adjusted according to the actual soil conditions, making malfunctions during drilling prone to occur and affecting the overall progress. Secondly, existing processes generally employ a sand and gravel conveying method where material is fed from the borehole opening. As the sand and gravel pass through the drilling mud and fall towards the pile bottom, they easily mix with the mud and collide with the borehole wall. This causes some material to adhere to the borehole wall or remain suspended in the mud, preventing sufficient delivery to the bottom of the pile. This results in insufficient filler at the pile end and poor compaction, thus affecting the overall quality of the pile. Furthermore, the falling stones and drilling mud can easily form a coating on the drill rod surface, causing the drill rod to "lock up" with the borehole wall. This makes it difficult for the drill rod to rise, fall, or extend normally, forcing construction to be interrupted. This not only increases equipment maintenance costs and the risk of project delays but also leads to quality defects such as uneven pile compaction and damage to pile integrity due to insufficient vibratory compaction. In addition, the high-pressure water jet structure of traditional vibratory compaction devices is relatively simple, with a limited flushing range. This cannot thoroughly remove the mud and stones accumulated on the drill rod surface and in the gaps between expansion joints, further exacerbating the risk of drill rod locking up and thus hindering the further promotion and application of ultra-deep vibratory compaction pile construction technology.
[0004] To address the aforementioned issues, a device and process method suitable for ultra-deep vibratory compaction pile construction are provided to achieve precise delivery of sand and gravel to the pile bottom, effectively prevent drill rod seizing, ensure pile quality, and improve construction efficiency. Summary of the Invention
[0005] To address the above problems, this invention provides a telescopic vibratory compaction device and a vibratory compaction method for ultra-deep piles, which solves the problems that existing vibratory compaction devices cannot be precisely adjusted according to soil conditions, are not convenient for accurately delivering stones to the bottom of the pile, and are prone to getting stuck in mud.
[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a telescopic vibratory compaction device for ultra-deep piles, comprising a drilling mechanism, wherein the drilling mechanism has a first driving device that pulls it downward to apply pressure. The drilling mechanism includes several telescopically connected sections of material rod assemblies that are detachable from each other. The hollow interior of the material rod assembly forms a feeding channel to facilitate the transport of stone, so that the stone can reach the bottom of the pile hole directly. At least two side rod assemblies are arranged side by side on both sides of the material rod assembly. Water flows through one of the side rod assemblies. The bottom of the material rod assembly is connected to a vibratory compactor. The vibratory compactor has a high-pressure nozzle that communicates with the side rod assembly through which the water flows, and is used to cut and clean the borehole during the drilling process.
[0007] As a further improvement to the above scheme, it also includes a vertically arranged mast, and the drilling mechanism moves up and down along the vertical direction of the mast; The mast is equipped with multiple correction mechanisms. Each correction mechanism includes a connecting seat that is connected to the mast. The two ends of the connecting seat are respectively hinged with a first hinge rod that is symmetrically arranged with each other. One end of the first hinge rod is hinged with a second hinge rod. The connecting seat, the first hinge rod, and the second hinge rod are driven to open and close by a drive source. The first and second hinge rods are also provided with pressing components that are in contact with and press against the outer surface of the material rod assembly. A pressure detector is provided between the pressing components and the first and second hinge rods to detect the deflection direction of the material rod assembly.
[0008] As a further improvement to the above solution, several slides are movably arranged on the material rod assembly. The slides have retainers on both sides that are movably arranged with the side rod assembly. The slides are also provided with connecting ears, which are connected to each other by flexible connectors. The top of the material rod assembly and the connecting ear at the highest position are also directly connected to each other by flexible connectors. When the material rod assembly is unlocked and extended, it drives the flexible connectors to pull the slides to be evenly spaced on the material rod assembly and the side rod assembly to support and retain the side rod assembly.
[0009] As a further improvement to the above solution, an outwardly protruding guide side plate is provided on the outer surface of the vibratory punch to guide the vibratory punching process. Multiple clearance openings are also provided on the guide side plate. A spraying assembly is connected to the outer surface of the vibratory compactor. The spraying assembly is located inside the clearance opening and is used to spray water to clean the soil on the outside of the vibratory compactor.
[0010] As a further improvement to the above solution, the spraying assembly includes a connector that is interconnected with the vibratory impactor. A movable cover is movably fitted onto the connector. The movable cover has multiple nozzles that facilitate water spraying. The spraying direction of the nozzles is inclined toward the outer surface of the vibratory impactor and tangent to the outer surface of the movable cover, so as to clean the dirt off the surface of the vibratory impactor.
[0011] As a further improvement to the above solution, a diversion block is provided inside the connector, and an eccentrically arranged diversion channel is provided on the diversion block. A cover is fixedly provided at the end of the movable cover, and an eccentrically arranged baffle is fixedly provided on the cover. The baffle is close to the diversion channel and completely covers the diversion channel. A spring is provided between the inner wall of the movable cover and the connector to push the movable cover to reciprocate, so that the spring can push away the soil on the surface during the reciprocating motion.
[0012] A vibro-compaction method for ultra-deep vibro-compaction piles is also provided, including the following steps; After the pile positions are arranged, the vibratory compactor is started to perform vibratory compaction to create holes. During hole creation, the first drive device pulls the drilling mechanism downward to apply pressure and sprays the water introduced into the side rod assembly out from the high-pressure nozzle. Drilling steps: When the drilling depth reaches the preset drilling depth of one of the material rod assemblies, release the locking connection between the outer material rod assembly and the adjacent inner material rod assembly; pull the inner material rod assembly upwards, then lock it again and continue drilling downwards; repeat the stretching and extension operation of the material rod assembly according to the design depth until the pile hole drilled by the material rod assembly reaches the design depth. Piling steps: At the same time or after feeding, the first drive device pulls the material rod assembly and vibratory compactor upward to compact the fill material in sections; when the top section of the material rod assembly is lifted to completely detach from the pile hole or the preset position, the locking connection between the inner material rod assembly and the adjacent outer material rod assembly is released; the inner material rod assembly is then inserted downward into the adjacent outer material rod assembly and re-locked; the material rod assembly recovery operation is repeated continuously until the pile hole is completely filled, completing the pile making.
[0013] As a further improvement to the above scheme, during the drilling process, when the vibratory compactor encounters a resistant stratum, the high-pressure water pressure is adjusted to 10-20MPa through the set control platform, the downward thrust provided by the first drive device is adjusted to 6-8T, and the current passing through the vibratory compactor is kept at 230-270A. When the current passing through the vibratory impactor exceeds 270A and lasts for more than 1 minute, the high-pressure water pressure is increased to a maximum of 22MPa in 5% increments, while the drilling speed is simultaneously reduced to a minimum of 0.2m / min.
[0014] As a further improvement to the above scheme, when the vibratory impactor encounters a resistance layer, the maximum current passing through the vibratory impactor shall not exceed 300A, and when the current differs from the maximum current by 20-40%, the water pressure shall be maintained at 10-20MPa, the thrust provided by the first drive device shall be 7-8T, and for every 1 minute of downward drilling, the vibratory impactor shall be lifted and withdrawn for 2 minutes of cooling, until the resistance layer is completely drilled through.
[0015] As a further improvement to the above scheme, when the current passing through the vibratory impactor exceeds 270A and lasts for more than 5 minutes, and the water pressure rises to 22MPa for more than 2 minutes, the hole-making process is stopped.
[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, by using a telescopic material rod assembly and a method of feeding with an inner rod, the phenomenon of stones not being able to fill the pile hole can be reduced during the pile forming process. Moreover, the stones will not be stuck in the middle of the hole, and the stones can reach the bottom of the pile directly under the guidance of the feeding channel in the material rod assembly, thereby improving the quality of the vibratory compaction pile.
[0017] In this invention, by using a side rod assembly to introduce water flow and spraying it outward with adjustable high-pressure water from a high-pressure nozzle, adjustments can be made according to the soil conditions and resistance encountered during hole formation. Furthermore, with the pressurization of the first drive device, the vibratory compactor can maintain faster processing efficiency and optimal hole quality during hole formation. At the same time, it does not rely on a high-power vibratory compactor. With the combined effect of the top pressure of the first drive device and the cutting of high-pressure water, a better hole formation effect is achieved.
[0018] By using a rod-feeding method, the phenomenon of stones getting stuck in the hole and unable to sink to the bottom of the pile can be reduced, thus reducing material jamming and preventing the drill rod from getting stuck. In addition, the spraying component installed on the vibratory compactor can spray the water introduced into the side rod assembly outward, which has a cleaning and impacting effect on the surface of the drill rod and the vibratory compactor, thereby reducing the cohesive force of the mud caused by vibration, achieving mud cleaning, and forming a lubricating water flow layer between the mud and the drill rod, facilitating the smooth up and down movement of the drill rod and preventing the drill rod from getting stuck. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 for Figure 1 A magnified view of the structure at point A in the middle; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure in the middle BB direction; Figure 4 This is a schematic diagram of the drilling mechanism of the present invention after it has been deployed; Figure 5 This is a schematic diagram of the state of the material rod assembly after it has been unfolded and elongated in this invention; Figure 6 for Figure 4 A magnified schematic diagram of the structure at point C in the middle; Figure 7 for Figure 6A schematic diagram of the local wind-blown structure at point D; Figure 8 This is a cross-sectional view of the injection assembly. Figure 9 This is a schematic diagram of the flow divider block. Figure 10 This is a schematic diagram of the second structure of the injection assembly.
[0020] In the diagram: 1. Mast; 2. First drive unit; 3. Material rod assembly; 31. First limiting platform; 32. Second limiting platform; 4. Vibratory impactor; 41. Guide side plate; 42. Clearance port; 43. Spray assembly; 431. Connector; 432. Movable cover; 433. Diverter block; 4331. Diverter channel; 434. Cover; 435. Baffle plate; 436. Spring; 437. Nozzle; 438. Cleaning strip; 5. Side rod assembly; 6. High-pressure nozzle; 7. Connecting seat; 71. First hinge rod; 72. Second hinge rod; 73. Top pressure assembly; 74. Pressure detector; 75. Drive source; 8. Slide; 81. Retainer; 82. Connecting ear; 9. Flexible connector; 11. Locking ring; 12. Locking seat; 13. Connecting rod; 15. Discharge port. Detailed Implementation
[0021] To enable those skilled in the art to better understand the technical solution, the present invention will be described in detail below with reference to embodiments. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.
[0022] like Figure 1-10 As shown, the specific solution of this embodiment is: a telescopic vibratory compaction device for ultra-deep piles, including a drilling mechanism, as shown in the attached diagram. Figure 5 As shown, the drilling mechanism has a first drive device 2 that pulls it downward to apply pressure, as indicated in the attached diagram. Figure 1 , 2 As shown, the first drive device 2 is specifically a winch device, and more specifically, it is a double winch device, one of which is used to pull the drilling mechanism downward for drilling, and the other is used to pull the drilling mechanism upward. A pressure detector is also connected to the first drive device 2 to detect the pulling force during the specific pulling of the drilling mechanism, so as to visualize and manage the drilling pressure.
[0023] In this embodiment, the drilling mechanism includes several sections of a material rod assembly 3 that are detachably telescopically connected together, such as... Figure 4As shown, the material rod assembly 3 is a hollow tubular rod, and each pair of material rod assemblies 3 is slidably sleeved together. A guide rail and a groove are provided between each pair of sleeved material rod assemblies 3 for limiting and preventing rotation. A second limiting platform 32 near the bottom is provided on the outer surface of the two sleeved material rod assemblies 3, and a first limiting platform 31 near the top is provided on the inner surface. The first limiting platforms 31 can abut against each other for limiting. However, it should be noted that the surface of the outermost material rod assembly 3 is directly connected to... When the pile hole wall is in contact, the second limiting platform 32 is not set. Since there are no internal parts connected on the inner surface of the innermost material rod assembly 3, the first limiting platform 31 is also not required. After the two adjacent material rod assemblies 3 are pulled out from each other, a locking ring 11 is fixedly installed on the surface of the inner material rod assembly 3. Under the mutual restriction of the locking ring 11, the first limiting platform 31, and the second limiting platform 32, the two elongated material rod assemblies 3 are kept in an elongated and stable state, which facilitates the rapid elongation of the material rod assembly 3 during the hole making process. See attached document Figure 5 As shown, locking seats 12 are provided on the outer side of the material rod assembly 3. The locking seat 12 is specifically a pin seat. A connecting rod 13 is detachably provided on the locking seat 12. The connecting rod 13 and the locking seat 12 can be fixed by a pin. When the material rod assembly 3 is fully retracted, the pin is inserted between the connecting rod 13 and the locking seat 12 to lock it and prevent it from protruding.
[0024] The hollow interior of the material rod assembly 3 forms a feeding channel to facilitate stone transport, allowing the stone to reach the bottom of the pile hole directly. Discharge ports 15 are located on both sides of the material rod assembly 3 near the bottom of the vibratory compactor 4 to facilitate stone discharge. At least two side rod assemblies 5 are arranged side-by-side on both sides of the material rod assembly 3. The bottom of the material rod assembly 3 is connected to the vibratory compactor 4. Water flows through one of the side rod assemblies 5. The vibratory compactor 4 has a high-pressure nozzle 6 that communicates with the water-flowing side rod assembly 5, used for cutting and cleaning the borehole during drilling. The other side rod assembly 5 contains a cable for powering the vibratory compactor 4, providing the main power for vibratory compaction during hole drilling. Figure 5 .
[0025] like Figure 1 , 2As shown in Figure 3, as a preferred embodiment of the above, it also includes a vertically arranged mast 1. The drilling mechanism moves up and down along the vertical direction of the mast 1. Specifically, the mast 1 is provided with multiple correction mechanisms. The correction mechanisms are mainly used to adjust the verticality of the material rod assembly 3 to avoid large deviations during the drilling process. Specifically, the correction mechanism includes a connecting seat 7 connected to the mast 1. As shown in the material rod assembly 3, the two ends of the connecting seat 7 are respectively hinged with symmetrically arranged first hinge rods 71. One end of the first hinge rod 71 is hinged with a second hinge rod 72. The connecting seat 7, the first hinge rod 71, and the second hinge rod 72 are driven to open and close by a driving source 75. Specifically, the driving source 75 is a hydraulic cylinder. The first hinge rod 71 and the second hinge rod 72 are also provided with a pressing component 73 that contacts and presses against the outer surface of the material rod assembly 3. Specifically, the pressing component 73 includes a pressing wheel that can contact the outer surface of the material rod assembly 3. A driving hydraulic cylinder that drives the linear movement of the pressing wheel is connected to the pressing wheel. A pressure detector 74 is provided between the pressing component 73 and the first hinge rod 71 and the second hinge rod 72 to detect the deflection direction of the material rod assembly 3. Specifically, by sensing the pressure change through the pressure detectors 74 connected to multiple pressing components 73, the tilt direction of the material rod assembly 3 is determined, and the tilt angle of the material rod assembly 3 is adjusted by the pressing of the pressing component 73 to maintain the vertical arrangement of the entire material rod assembly 3, so that the drilling mechanism can drill at the optimal angle.
[0026] like Figure 5 As shown, in a preferred embodiment, the material rod assembly 3 is movably provided with several slides 8. The slides 8 have retainers 81 on both sides that are movably arranged with the side rod assembly 5. The slides 8 are also provided with connecting ears 82, which are connected to each other by flexible connectors 9. The top of the material rod assembly 3 and the connecting ears 82 at the highest position are also directly connected to each other by flexible connectors 9. Specifically, a connecting platform is also fixedly provided on the top of the innermost material rod assembly 3 to facilitate the connection of the flexible connectors 9. In this embodiment, the flexible connectors 9 are provided as iron chains, but steel ropes can also be selected. Their main function is to drive the flexible connectors 9 to pull the slides 8 evenly and equally spaced on the material rod assembly 3 and the side rod assembly 5 when the material rod assembly 3 is unlocked and extended, so as to support and maintain the side rod assembly 5. This arrangement can prevent the side rod assembly 5 from tilting or bending under the action of the slides 8, and keep the side rod assembly 5 vertically arranged.
[0027] like Figure 4 , 6As shown in Figures 7, 8, 9, and 10, in a preferred embodiment, the outer surface of the vibratory punch 4 is provided with an outwardly protruding guide side plate 41 for guiding the vibratory punching process. The guide side plate 41 allows the vibratory punch 4 to move up and down more easily during vibratory punching operations. The guide side plate 41 is also provided with multiple clearance openings 42, such as... Figure 7 As shown, the clearance opening 42 is provided through, and the outer surface of the vibratory compactor 4 is connected to the spraying assembly 43. The spraying assembly 43 is located inside the clearance opening 42 and is used to spray water to clean the soil on the outside of the vibratory compactor 4.
[0028] Specifically, the spraying assembly 43 includes a connector 431 that is connected to the vibratory impactor 4. The connector 431 is threadedly connected to the inside of the vibratory impactor 4 and is hollow inside, communicating with the water introduced into the side rod assembly 5. A movable cover 432 is movably sleeved on the connector 431. The movable cover 432 has multiple nozzles 437 that facilitate water spraying. The spraying direction of the nozzles 437 is inclined towards the outer surface of the vibratory impactor 4 and tangent to the outer surface of the movable cover 432. Therefore, when cleaning water is sprayed from the nozzles 437, the movable cover 432 can be driven to rotate and spray water towards the surface of the vibratory impactor 4 to clean the mud on the surface of the vibratory impactor 4. In addition, the sprayed water can surround the vibratory impactor 4, thereby forming an area similar to a lubricating layer. When the vibratory impactor 4 is stuck, the binding force of the mud can be reduced by rinsing with clean water, and the vibratory impactor 4 can move up and down.
[0029] In a preferred embodiment of the above embodiment, a diversion block 433 is provided inside the connector 431, and an eccentrically arranged diversion channel 4331 is provided on the diversion block 433. A cover 434 is fixedly provided at the end of the movable cover 432, and an eccentrically arranged baffle plate 435 is fixedly provided on the cover 434. The baffle plate 435 is close to the diversion channel 4331 and completely covers the diversion channel 4331. Specifically, the diversion channel 4331 is a circular hole, and the baffle plate 435 is a circular plate with a wider area than the diversion channel 4331. A spring piece 436 is provided between the inner wall of the movable cover 432 and the connector 431 to push the movable cover 432 to reciprocate, so that the spring piece 436 can push away the soil on the surface during the reciprocating motion. When water flows into 4331, it first impacts the baffle plate 435, causing the cover 434 and the movable cover 432 to move on the connector 431. When water is sprayed from the nozzle 437, it drives the cover 434 and the movable cover 432 to rotate, thus gradually reducing the overlapping area between the baffle plate 435 and the diverting block 433. Consequently, the impact force on the baffle plate 435 gradually decreases, and it rebounds under the action of the spring 436. When the overlapping area between the baffle plate 435 and the diverting channel 4331 continues to increase, the movable cover 432 and the cover 434 continue to move away from the connector 431. This causes the cover 434 and the movable cover 432 to continuously reciprocate during the rotation, thereby pushing away the surrounding mud and soil and preventing them from being blocked on the surface.
[0030] like Figure 10 Another spray assembly 43 structure is provided, the main difference being that several cleaning strips 438 are provided on the surface of the cover 434 and the movable cover 432 to improve the cleaning ability of the soil.
[0031] This embodiment also discloses a vibratory compaction method for ultra-deep vibratory compaction piles, which uses the aforementioned vibratory compaction device and includes the following steps; After the pile positions are arranged, the vibratory compactor 4 is started to vibrate and drill holes. During drilling, the first drive device 2 pulls the drilling mechanism downward to pressurize it, and sprays the water introduced into the side rod assembly 5 out from the high-pressure nozzle 6. In addition, a portion of the introduced water is diverted for cooling of the vibratory compactor 4. Drilling steps: When the drilling depth reaches the preset drilling depth of one of the material rod components 3, release the locking connection between the outer material rod component 3 and the adjacent inner material rod component 3; pull the inner material rod component 3 upward and then lock it again before continuing to drill downward; repeat the stretching and extension operation of the material rod component 3 according to the design depth until the pile hole drilled by the material rod component 3 reaches the design depth; Piling steps: At the same time or after feeding, the first drive device 2 pulls the material rod assembly 3 and the vibratory compactor 4 upward to compact the fill material in sections; when the top section of the material rod assembly 3 is lifted to completely detach from the pile hole or the preset position, the locking connection between the inner section of the material rod assembly 3 and its adjacent outer section of the material rod assembly 3 is released; the inner section of the material rod assembly 3 is inserted downward into the adjacent outer section of the material rod assembly 3 and locked again; the material rod assembly 3 is continuously retracted until the pile hole is completely filled, and the piling is completed.
[0032] During the drilling process, when the vibratory compactor 4 encounters a resistant formation, the high-pressure water pressure is adjusted to 10-20MPa through the control platform, the first drive device 2 is adjusted to provide a downward thrust of 6-8T, and the current passing through the vibratory compactor 4 is kept at 230-270A. The above methods are applicable to most resistant formations. The greater the current flowing through vibratory compactor 4, the greater its power and the more work it performs. Generally, when encountering resistant formations, the vibration frequency of vibratory compactor 4 remains constant to ensure smooth borehole drilling. The resistance is overcome by increasing the current. To maintain the service life of vibratory compactor 4, its operating current needs to be kept within a reasonable range. However, in cases where the resistance of some formations is significant, the following situations may arise: When the current passing through the vibratory tamper 4 exceeds 270A and lasts for more than 1 minute, it indicates that the resistance of the formation in the borehole is large and has exceeded the resistance range of the conventional formation. In order to continue borehole drilling, the method in this embodiment is to increase the high-pressure water pressure to a maximum of 22MPa in 5% increments. That is, based on the water pressure of 20MPa, the pressure of the high-pressure water is increased by 5% each time. The calculation method for each pressure increase is (22-20)×5%=0.1MPa. This increases the stripping and cutting action on the resistance formation, thereby reducing the increase in current to the vibratory compactor 4, protecting the vibratory compactor 4, and simultaneously reducing the drilling speed to a minimum of 0.2 m / min.
[0033] It is important to note a special case: when the current passing through the vibratory compactor 4 exceeds 270A and lasts for more than 5 minutes, and the water pressure rises to 22MPa for more than 2 minutes, drilling should be stopped. This is because under these conditions, it indicates that the high-pressure water has limited effect on the stripping and cutting of the resistance soil layer, and it is not appropriate to increase the current of the vibratory compactor 4 for drilling again.
[0034] (2) When the vibratory impactor 4 encounters a resistance layer, and the highest current passing through the vibratory impactor 4 exceeds 270A but does not exceed 300A, and when the current differs from the highest current by 20-40%, that is, when the current is close to: 270+(300-270)×(1-40%)=288A, 270+(300-270)×(1-20%)=294A, 288-294A, adjust and maintain the water pressure to 10-20MPa, and the thrust provided by the first drive device 2 is 7-8T. For every 1 minute of downward drilling, lift and pull back for 2 minutes to cool down, until the resistance layer is completely drilled through. The point-to-point drilling method of drilling-cooling-drilling is adopted to avoid overloading of equipment such as the vibratory impactor 4.
[0035] It should be noted that, in this document, the terms "including," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of the present invention. These examples are merely for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be pointed out that, due to the limitations of written expression and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or variations without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.
Claims
1. A telescopic vibratory compaction device for ultra-deep piles, characterized in that, Includes a drilling mechanism, which has a first drive device (2) that pulls it downward to apply pressure. The drilling mechanism includes several sections of telescopically connected material rod assemblies (3) that are detachable from each other. The hollow interior of the material rod assembly (3) forms a feeding channel to facilitate the transport of stone, so that the stone can reach the bottom of the pile hole directly. At least two side rod assemblies (5) are arranged side by side on both sides of the material rod assembly (3). Water is introduced into one of the side rod assemblies (5). The bottom of the material rod assembly (3) is connected to a vibratory compactor (4). The vibratory compactor (4) has a high-pressure nozzle (6) that is connected to the side rod assembly (5) into which the water is introduced, and is used to cut and clean the borehole during the drilling process.
2. The telescopic vibratory compaction device for ultra-deep piles according to claim 1, characterized in that, It also includes a vertically arranged mast (1), and the drilling mechanism moves up and down along the vertical direction of the mast (1); Multiple correction mechanisms are provided on the mast (1). The correction mechanism includes a connecting seat (7) that is connected to the mast (1). The two ends of the connecting seat (7) are respectively hinged to a first hinge rod (71) that is symmetrically arranged. One end of the first hinge rod (71) is hinged to a second hinge rod (72). The connecting seat (7), the first hinge rod (71), and the second hinge rod (72) are driven to open and close by a drive source (75). The first hinge rod (71) and the second hinge rod (72) are also provided with a pressing component (73) that contacts and presses against the outer surface of the material rod assembly (3). A pressure detector (74) is provided between the pressing component (73) and the first hinge rod (71) and the second hinge rod (72) to detect the deflection direction of the material rod assembly (3).
3. The telescopic vibratory compaction device for ultra-deep piles according to claim 1, characterized in that, The material rod assembly (3) is movably provided with several slides (8). The two sides of the slides (8) have retainers (81) that are movably provided with the side rod assembly (5). The slides (8) are also provided with connecting ears (82). The connecting ears (82) are connected to each other by flexible connectors (9). The top of the material rod assembly (3) and the connecting ears (82) at the highest position are also directly connected to each other by flexible connectors (9). When the material rod assembly (3) is unlocked and extended, it drives the flexible connectors (9) to pull the slides (8) to be evenly and equally spaced on the material rod assembly (3) and the side rod assembly (5) to support and hold the side rod assembly (5).
4. The telescopic vibratory compaction device for ultra-deep piles according to claim 1, characterized in that, The outer surface of the vibratory punch (4) is provided with an outwardly protruding guide side plate (41) for guiding the vibratory punching of holes; Multiple clearance openings (42) are also provided on the guide side plate (41). A spray assembly (43) is connected to the outer side of the vibratory impactor (4). The spray assembly (43) is located inside the clearance opening (42) and is used to spray water to clean the soil on the outside of the vibratory impactor (4).
5. A telescopic vibratory compaction device for ultra-deep piles according to claim 4, characterized in that, The spraying assembly (43) includes a connector (431) that is connected to the vibratory impactor (4). A movable cover (432) is movably sleeved on the connector (431). The movable cover (432) has multiple nozzles (437) that facilitate water spraying. The spraying direction of the nozzles (437) is inclined toward the outer surface of the vibratory impactor (4) and tangent to the outer surface of the movable cover (432) to clean the dirt off the surface of the vibratory impactor (4).
6. A telescopic vibratory compaction device for ultra-deep piles according to claim 5, characterized in that, A diversion block (433) is provided inside the connector (431), and an eccentrically arranged diversion channel (4331) is provided on the diversion block (433). A cover (434) is fixedly provided at the end of the movable cover (432), and an eccentrically arranged baffle plate (435) is fixedly provided on the cover (434). The baffle plate (435) is close to the diversion channel (4331) and completely covers the diversion channel (4331). A spring (436) is provided between the inner wall of the movable cover (432) and the connector (431) to push the movable cover (432) to reciprocate, so that the spring (436) can push away the soil on the surface during the reciprocating motion.
7. A vibro-compaction method for ultra-deep vibro-compaction piles, characterized in that, The method of using the vibratory impact device according to any one of claims 1-6 includes the following steps; After the pile positions are arranged, the vibratory compactor (4) is started to make holes. When making holes, the first drive device (2) pulls the drilling mechanism to move downward and pressurize, and sprays the water introduced into the side rod assembly (5) out from the high pressure nozzle (6). Drilling steps: When the drilling depth reaches the preset drilling depth of one of the material rod components (3), release the locking connection between the outer material rod component (3) and the inner adjacent material rod component (3); pull the inner material rod component (3) upward and then lock it again before continuing to drill downward; according to the design depth, repeatedly perform the stretching and extension operation of the material rod component (3) until the pile hole drilled by the material rod component (3) reaches the design depth; Piling steps: At the same time or after feeding, the first drive device (2) pulls the material rod assembly (3) and vibratory compactor (4) upward to compact the filling material in sections; when the top section of the material rod assembly (3) is lifted to completely detach from the pile hole or the preset position, the locking connection between the inner material rod assembly (3) and the adjacent outer material rod assembly (3) is released; the inner material rod assembly (3) is inserted downward into the adjacent outer material rod assembly (3) and locked again; the material rod assembly (3) is continuously recycled until the pile hole is completely filled, and the piling is completed.
8. The vibro-compaction method for ultra-deep vibro-compaction piles according to claim 7, characterized in that, During the drilling process, when the vibratory compactor (4) encounters a resistant stratum, the high-pressure water pressure is adjusted to 10-20MPa through the set control platform, the first drive device (2) is adjusted to provide a downward thrust of 6-8T, and the current passing through the vibratory compactor (4) is kept at 230-270A. When the current passing through the vibratory impactor (4) exceeds 270A and lasts for more than 1 minute, the high-pressure water pressure is increased to a maximum of 22MPa in 5% increments, and the drilling speed is simultaneously reduced to a minimum of 0.2m / min.
9. The vibro-compaction method for ultra-deep vibro-compaction piles according to claim 8, characterized in that, When the vibratory impactor (4) encounters a resistance layer, the maximum current passing through the vibratory impactor (4) shall not exceed 300A, and when the current differs from the maximum current by 20-40%, the water pressure shall be maintained at 10-20MPa. The thrust provided by the first drive device (2) shall be 7-8T. For every 1 minute of downward drilling, the device shall be lifted and pulled back for 2 minutes to cool down, until the resistance layer is completely drilled through.
10. The vibro-compaction method for ultra-deep vibro-compaction piles according to claim 8, characterized in that, When the current passing through the vibratory impactor (4) exceeds 270A and lasts for more than 5 minutes, and the water pressure rises to 22MPa for more than 2 minutes, the hole-making process is stopped.