Sludge geology prefabricated solidified soil pile composite foundation treatment device and construction method

Abstract

The invention belongs to the technical field of foundation treatment, and particularly relates to a silt geology prefabricated solidified soil pile composite foundation treatment device and a construction method, the silt geology prefabricated solidified soil pile composite foundation treatment device comprises a pile driver and a vibratory hammer, the vibratory hammer is arranged at one end of the pile driver, and the silt geology prefabricated solidified soil pile composite foundation treatment device further comprises a connecting device and a clamping device which are installed on the outer surface of the vibratory hammer. According to the sludge geology prefabricated solidified soil pile composite foundation treatment device and the construction method, by arranging an inner clamping mechanism, the inner wall of a guide pipe can be automatically attached to complete clamping of the guide pipe, and an inner clamping plate can be conveniently limited through a groove of a limiting sleeve, so that the inner clamping plate can move along the track of the groove of the limiting sleeve; the inner clamping plate can be driven to move through rotation of the driving screw rod, and the groove of the limiting sleeve can be inserted through movement of the clamping plate, so that after the inner clamping plate rotates, the inner clamping plate faces downwards, and the driving screw rod rotates reversely, the inner clamping plate does not rotate backwards but moves backwards, and the inner wall of the guide pipe can be clamped conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation treatment, and in particular to a silt geological prefabricated solidified soil pile composite foundation treatment device and a construction method. Background Art

[0002] Ground treatment refers to the improvement or reinforcement of foundation soil through certain engineering measures in construction projects to increase the bearing capacity, stability and earthquake resistance of the foundation and ensure the safety and stability of the building. There are many methods of ground treatment, and the specific choice depends on the soil properties, building requirements and site conditions.

[0003] Silt geology usually has the characteristics of high water content, low bearing capacity and high compressibility, which brings great challenges to the foundation treatment of buildings. At present, common foundation treatment methods include sand cushion, replacement filling method, reinforced piles, etc., but these methods have limited effects in dealing with silt geology, and the construction process is complicated, time-consuming and costly. In addition, the existing guide pipes or positioning rods for installing soil piles are manually plugged in, which is time-consuming and labor-intensive. At the same time, the soil piles can only be manually determined to be plugged in the preset position for positioning, and cannot be accurately positioned, causing the solidified soil piles to easily tilt, affecting the solidification of the foundation. Summary of the invention

[0004] Based on the technical problem that the existing treatment of silt geology has limited effect, and the construction process is complicated, time-consuming and costly, and the positioning rods or guide tubes are manually inserted, which is time-consuming and labor-intensive, and the soil piles can only be inserted in the preset positioning positions by manual determination, and cannot be accurately positioned, resulting in the solidified soil piles being prone to tilting, which affects the solidification of the foundation, the present invention proposes a silt geology prefabricated solidified soil pile composite foundation treatment device and construction method.

[0005] The present invention provides a silt geological prefabricated solidified soil pile composite foundation treatment device, which includes a pile driver and a vibrating hammer. The vibrating hammer is arranged at one end of the pile driver, and also includes a connecting device and a clamping device installed on the outer surface of the vibrating hammer.

[0006] The connecting device is located on the outer surface of the vibrating hammer and drives the clamping device to move up and down. The connecting device includes a lifting mechanism and a connecting mechanism. The lifting mechanism includes a lifting rigid chain. The release of the lifting rigid chain drives the clamping device to move down. The connecting mechanism includes a connecting lock. The rise of the connecting lock drives the two relative lifting rigid chains to be plugged in.

[0007] The clamping device is located on the outer surface of the connecting device and clamps the guide tube to be used. The clamping device includes an external clamping mechanism, an internal clamping mechanism and a positioning module. The external clamping mechanism includes an outer clamping plate, and the movement of the outer clamping plate clamps the outside of the guide tube. The internal clamping mechanism includes an inner clamping plate, and the relative movement of the inner clamping plate clamps the inner wall of the guide tube.

[0008] Preferably, the lifting mechanism also includes a lifting shell, which is fixedly mounted on the outer surface of the vibrating hammer, and the inner wall of the lifting shell is rotatably connected to a winding roller with a gear through a bearing, and the outer surface of the winding roller is fixedly mounted to one end of the lifting rigid chain, and a lifting motor is fixedly mounted on the outer surface of the lifting shell, and one end of the output shaft of the lifting motor is fixedly mounted to one end of one of the winding rollers, and the gear of one winding roller drives one end of another winding roller to be fixedly mounted through a gear set.

[0009] Through the above technical solution, the lifting rigid chain is hinged by multiple ends through pins. When the relative lifting rigid chains are not plugged in, the vibrating hammer can be adjusted without affecting the clamping device below. Through the rotation of one winding roller, the other winding roller can be driven to rotate in the opposite direction through the transmission of gears.

[0010] Preferably, a support ring is fixedly installed at one end of the lifting rigid chain, a limit rod is fixedly installed on the outer surface of the support ring, a limit plate is fixedly installed on the outer surface of the lifting shell, and one end of the limit rod is slidably plugged into the outer surface of the limit plate.

[0011] Through the above technical scheme, the lifting and lowering of the lifting rigid chain can drive the support ring to lift and lower so that the position of the clamping device can be adjusted. Through the insertion between the limit rod and the limit plate, the connection between the clamping device and the lifting shell can be maintained, so that the vibration generated by the vibrating hammer is transmitted to the clamping device.

[0012] Preferably, the inner wall of the lifting shell is rotatably connected to a wire roller through a bearing, a connecting rope is fixedly installed on the outer surface of the wire roller, a connecting motor is fixedly installed on the outer surface of the lifting shell, one end of the output shaft of the connecting motor is fixedly installed on one end of the wire roller and then drives the wire roller to rotate, the inner wall of the connecting lock is slidably plugged into the outer surface of the lifting rigid chain, a counterweight block is fixedly installed on the outer surface of the lifting rigid chain, and one end of the connecting rope is fixedly installed on the upper surface of the counterweight block.

[0013] Through the above technical scheme, the rotation of the wire roller can drive the connecting rope to be released, and then drive the connecting lock to descend, so that the plug-in lifting rigid chain can be separated. The rising of the connecting lock can drive the separated lifting rigid chain to be plugged in, so that the flexible lifting rigid chain becomes hard, which is convenient for the plugging of the solidified soil pile into the guide tube.

[0014] Preferably, the external clamping mechanism also includes a clamping shell, the upper surface of the clamping shell is fixedly mounted to the lower surface of the support ring via a connecting column, the inner wall of the clamping shell is rotatably connected to an annular gear with an arc groove, and a driving motor is fixedly mounted on the outer surface of the clamping shell, and one end of the output shaft of the driving motor is meshed with the annular gear through a gear.

[0015] Through the above technical solution, the rotation of the annular gear disk can drive the outer clamping plates to move horizontally, and the driving motor can drive the annular gear disk to rotate, thereby driving multiple outer clamping plates to move synchronously.

[0016] Preferably, a limiting slide groove is fixedly installed on the inner wall of the clamping shell, the inner wall of the limiting slide groove is slidably plugged with the outer surface of the outer clamping plate, and the lower surface of the outer clamping plate is slidably plugged with the inner wall of the arc groove of the annular gear disk through a column.

[0017] Through the above technical solution, the outer clamping plate is limited by the limiting sliding groove, so that the outer clamping plate can be easily moved to clamp the outer surface of the guide tube.

[0018] Preferably, the inner clamping mechanism also includes a limiting sleeve, which is fixedly mounted on the outer surface of the outer clamping plate. The inner wall of the limiting sleeve is rotatably connected to a driving screw through a bearing. The outer surface of the driving screw is threadedly connected to one end of the inner clamping plate, and one end of the inner clamping plate is slidably inserted into the inner wall of the groove of the limiting sleeve.

[0019] Through the above technical solution, the inner clamping plate can be easily limited by the groove of the limiting sleeve, so that the inner clamping plate can move along the groove track of the limiting sleeve, and the rotation of the driving screw can drive the inner clamping plate to move.

[0020] Preferably, an adjustment slot is fixedly installed on the lower surface of the limiting sleeve, and a card plate with an electromagnet is slidably inserted into the inner wall of the adjusting slot, and a connecting spring is fixedly installed on one end of the card plate, and one end of the connecting spring is fixedly installed on the inner wall of the adjusting slot, and one end of the electromagnet of the card plate is slidably inserted into the inner wall of the limiting sleeve and then magnetically connected.

[0021] Through the above technical solution, the groove of the limiting sleeve can be inserted by moving the clamping plate, so that after the inner clamping plate is rotated so that the inner clamping plate faces downward, after the driving screw is reversed, the inner clamping plate will not rotate back but move back, so as to facilitate clamping the inner wall of the guide tube.

[0022] Preferably, the upper surface of the clamping shell is rotatably connected to a transmission rod with a bevel gear through a bearing seat, one end of the transmission rod is slidably inserted into the inner wall of the driving screw, the outer surface of the clamping shell is rotatably connected to an annular limiting groove through a connecting plate, the inner wall of the annular limiting groove is rotatably connected to a transmission bevel gear disk with teeth, the transmission bevel gear disk is meshed with the bevel gear of the transmission rod, a rotating motor with gears is fixedly installed on the upper surface of the clamping shell, the output shaft gear of the rotating motor is meshed with the teeth of the transmission bevel gear disk, and the positioning module is fixedly installed on the outer side surface of the inner clamping plate.

[0023] Through the above technical solution, after the rotating motor can drive the transmission bevel gear disk to rotate, it can drive multiple transmission rods to rotate, thereby driving multiple inner clamps to move. The transmission rod and the driving screw rod are slidably connected without affecting the movement of the driving screw rod with the movement of the outer clamp plate.

[0024] The present invention provides a construction method for a silt geological prefabricated solidified soil pile composite foundation treatment device, comprising the following steps:

[0025] S1: Prefabricated solidified soil piles: soil, curing agent and appropriate amount of water are mixed in proportion and prefabricated through stirring, molding and curing steps. After the solidified soil piles are inserted into the foundation, the strength is further enhanced through chemical reaction, thereby improving the overall bearing capacity of the foundation.

[0026] S2: After the clamping shell is driven down by the pile driver, one end of the vertical guide tube is sleeved, and the driving motor on the clamping shell is started. The driving motor drives the annular gear disk in the clamping shell to rotate through the gear, thereby driving the outer clamping plate in the limiting slide groove to move relatively and contact the guide tube through the deflection of the arc groove, clamping the guide tube, and driving the screw rod to move on the transmission rod at the same time.

[0027] S3: The rotating motor on the clamping shell is started, and the transmission bevel gear plate is driven to rotate in the annular limit groove through the transmission of the gear, and the transmission rod meshing with it is driven to rotate. The transmission rod drives the driving screw to rotate in the limit sleeve, so that the inner clamping plate moves along the groove of the limit sleeve. When it encounters the annular groove of the limit sleeve, the inner clamping plate rotates together with the driving screw. The inner clamping plate is transformed from the upward direction to the downward direction, which is convenient for fitting the inner wall of the guide tube. After the electromagnet on the clamping plate in the adjustment slot is energized, the connection The connecting spring is stretched and slidably engaged with the groove at the other end of the limit sleeve, closing the arc-shaped groove of the limit sleeve to prevent the inner clamping plate from rotating synchronously when the driving screw is reversed. After the driving screw is reversed, due to the limitation of the clamping plate, the inner clamping plate moves back and fits the inner wall of the guide tube to complete the clamping of the guide tube. After the hydraulic system of the pile driver drives the vibration cone to descend, it drives the guide tube to descend. After the vibration hammer is started, it drives the guide tube to vibrate. With the pressure of the hydraulic system, the guide tube is plugged into the predetermined position.

[0028] S4: After the guide tubes are arranged, the soil piles to be driven are vertically clamped by a vibrating hammer, and the lifting motor on the lifting shell is started, driving the winding roller to release the lifting rigid chain. At the same time, the lifting rigid chain drives the support ring to descend, and the limit rod on the support ring leaves the limit plate. The connection motor on the lifting shell is started and drives the selection roller to rotate. When the connection is released, the counterweight drives the connection lock to descend quickly. The pile driver is adjusted so that the clamping shell is sleeved in the guide tube below. The inner and outer plates on the clamping shell cooperate to clamp and position the guide tube. The clamping shell is quickly adjusted through the positioning module to keep the inner and outer plates on the clamping shell accurate in clamping.

[0029] S5: After the clamped soil pile can be kept in the inner core of the guide tube, it can rise during the winding process of the connecting rope through the connecting lock, and the relative lifting rigid chains will be plugged in so that the lifting rigid chains will not bend, maintaining the accuracy of the soil pile lowering and plugging. The vibrating hammer vibrates the solidified soil pile into the silt layer through the vibration force, and the pile driver hydraulic system assists in adjusting the insertion depth and insertion speed to ensure that the pile body can be inserted evenly and stably.

[0030] S6: In order to prevent excessive moisture in the silt geology from affecting the stability of the solidified soil piles, the excess moisture is discharged through the drainage system to accelerate the solidification and settlement process of the foundation.

[0031] S7: After the solidification piles are inserted and the drainage treatment is completed, a period of maintenance is carried out. After the foundation reaches the designed bearing capacity, the foundation is tested to ensure that the treatment effect meets the project requirements.

[0032] The beneficial effects of the present invention are:

[0033] 1. By setting a connecting device, the position of the clamping device can be adjusted to complete the positioning of the solidified soil pile, which is convenient for the fixed soil pile to be better plugged into the guide tube. The clamping device can be driven to lift by releasing and winding the lifting rigid chain. When the relative lifting rigid chain is not plugged in, it can be soft, which is convenient for the clamping device to complete the clamping of the guide tube without affecting the hydraulic system of the pile driver. The hydraulic system of the pile driver can be adjusted after being positioned by the clamping device, so as to keep the clamped solidified soil pile located at the center of gravity of the guide tube. By lifting and lowering the connecting lock, the plugging and unplugging between the relative lifting rigid chains can be realized, so that the solidified soil pile can be quickly positioned, which solves the existing problems of limited effect in treating silt geology, complex construction process, long time consumption and high cost, and only manual determination can be used to plug the soil pile in the preset position for positioning, which cannot be accurately positioned, causing the solidified soil pile to be easily tilted, which affects the solidification of the foundation.

[0034] 2. By setting up an external clamping mechanism, the guide tube can be clamped automatically to reduce labor input. The rotation of the annular gear disk can drive the outer clamping plate to move horizontally. The driving motor can drive the annular gear disk to rotate, thereby driving multiple outer clamping plates to move synchronously. The outer clamping plate is limited by the limiting slide groove, which makes it easy to move the outer clamping plate and clamp the outer surface of the guide tube to reduce labor input. This solves the technical problems of limited effect in the existing treatment of silt geology, complex construction process, long time consumption, high cost, and time-consuming and labor-intensive manual insertion of positioning rods or guide tubes.

[0035] 3. By setting up an internal clamping mechanism, the inner wall of the guide tube can be automatically fitted to complete the clamping of the guide tube. The groove of the limiting sleeve can facilitate the limiting of the inner clamping plate, so that the inner clamping plate can move along the groove trajectory of the limiting sleeve. The rotation of the driving screw can drive the inner clamping plate to move. Through the movement of the clamping plate, the groove of the limiting sleeve can be plugged in. After the inner clamping plate is rotated, the inner clamping plate is facing downward. After the driving screw is reversed, the inner clamping plate will not rotate back but move back, which is convenient for clamping the inner wall of the guide tube. It can cooperate with the external clamping mechanism to complete the clamping of the guide tube, which solves the technical problems of limited effect in the existing treatment of sludge geology, complex construction process, long time consumption, high cost, and time-consuming and labor-intensive manual insertion of positioning rods or guide tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of a silt geological prefabricated solidified soil pile composite foundation treatment device proposed by the present invention;

[0037] Figure 2 A three-dimensional diagram of a vibrating cone structure of a composite foundation treatment device for prefabricated solidified soil piles in silt geology proposed by the present invention;

[0038] Figure 3 A three-dimensional diagram of a lifting shell structure of a silt geological prefabricated solidified soil pile composite foundation treatment device proposed by the present invention;

[0039] Figure 4 A three-dimensional diagram of a connection lock structure of a composite foundation treatment device for prefabricated solidified soil piles in sludge geology proposed by the present invention;

[0040] Figure 5 A three-dimensional diagram of a clamping shell structure of a silt geological prefabricated solidified soil pile composite foundation treatment device proposed by the present invention;

[0041] Figure 6 A three-dimensional diagram of the annular toothed disc structure of a composite foundation treatment device for prefabricated solidified soil piles in silt geology proposed by the present invention;

[0042] Figure 7 A three-dimensional diagram of the outer plywood structure of a silt geological prefabricated solidified soil pile composite foundation treatment device proposed by the present invention;

[0043] Figure 8 A three-dimensional diagram of the inner plate structure of a silt geological prefabricated solidified soil pile composite foundation treatment device proposed by the present invention;

[0044] Fig. 9 A three-dimensional diagram of a driving screw structure of a silt geological prefabricated solidified soil pile composite foundation treatment device proposed by the present invention;

[0045] Fig.10 A stereoscopic diagram of a clamping plate structure of a composite foundation treatment device for prefabricated solidified soil piles in silt geology proposed by the present invention.

[0046] In the figure: 1. pile driver; 11. vibrating hammer; 2. lifting shell; 21. winding roller; 22. lifting rigid chain; 23. lifting motor; 24. supporting ring; 25. limiting rod; 26. limiting plate; 3. wire roller; 31. connecting rope; 32. connecting motor; 33. connecting lock; 34. counterweight; 4. clamping shell; 41. annular gear disc; 42. driving motor; 43. limiting slide groove; 44. outer clamping plate; 5. limiting sleeve; 51. driving screw rod; 52. inner clamping plate; 53. adjusting slot; 54. clamping plate; 55. connecting spring; 6. transmission rod; 61. annular limiting slot; 62. transmission bevel gear disc; 63. rotating motor; 64. positioning module. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0048] Reference Figure 1-Figure 10 A silt geological prefabricated solidified soil pile composite foundation treatment device includes a pile driver 1 and a vibrating hammer 11. The vibrating hammer 11 is arranged at one end of the pile driver 1, and also includes a connecting device and a clamping device installed on the outer surface of the vibrating hammer 11.

[0049] In order to drive the clamping device to move up and down, the connecting device is located on the outer surface of the vibrating hammer 11, and drives the clamping device to move up and down. The connecting device includes a lifting mechanism and a connecting mechanism. The lifting mechanism includes a lifting rigid chain 22. The release of the lifting rigid chain 22 drives the clamping device to move down. The connecting mechanism includes a connecting lock 33. The rise of the connecting lock 33 drives the two relative lifting rigid chains 22 to be plugged in.

[0050] Specifically, in order to drive the lifting rigid chain 22 to automatically release and reel in, the lifting mechanism also includes a lifting shell 2, which is fixedly mounted on the outer surface of the vibrating hammer 11, and the inner wall of the lifting shell 2 is rotatably connected to a reel 21 with a gear through a bearing, and the outer surface of the reel 21 is fixedly mounted to one end of the lifting rigid chain 22, and a lifting motor 23 is fixedly mounted on the outer surface of the lifting shell 2, and one end of the output shaft of the lifting motor 23 is fixedly mounted to one end of a reel 21, and the gear of one reel 21 drives one end of another reel 21 to be fixedly mounted through a gear set.

[0051] Specifically, in order to facilitate the stability of the clamping device, a support ring 24 is fixedly installed at one end of the lifting rigid chain 22, a limiting rod 25 is fixedly installed on the outer surface of the support ring 24, a limiting plate 26 is fixedly installed on the outer surface of the lifting shell 2, and one end of the limiting rod 25 is slidably plugged into the outer surface of the limiting plate 26.

[0052] Specifically, in order to automatically complete the connection between the relative lifting and lowering rigid chains 22, the inner wall of the lifting shell 2 is rotatably connected to the wire roller 3 through a bearing, and a connecting rope 31 is fixedly installed on the outer surface of the wire roller 3. A connecting motor 32 is fixedly installed on the outer surface of the lifting shell 2. One end of the output shaft of the connecting motor 32 is fixedly installed with one end of the wire roller 3 to drive the wire roller 3 to rotate. The inner wall of the connecting lock 33 is slidably connected with the outer surface of the lifting and lowering rigid chain 22. A counterweight block 34 is fixedly installed on the outer surface of the lifting and lowering rigid chain 22 to facilitate the connection The lock head 33 is driven to descend after the release of the connecting rope 31, and one end of the connecting rope 31 is fixedly installed on the upper surface of the counterweight block 34.

[0053] In order to clamp the guide tube, the clamping device is located on the outer surface of the connecting device and clamps the guide tube to be used. The clamping device includes an external clamping mechanism, an internal clamping mechanism and a positioning module 64. The external clamping mechanism includes an outer clamping plate 44. The movement of the outer clamping plate 44 clamps the outside of the guide tube. The internal clamping mechanism includes an inner clamping plate 52. The relative movement of the inner clamping plate 52 clamps the inner wall of the guide tube.

[0054] Specifically, in order to drive the outer clamping plate 44 to move synchronously, the external clamping mechanism also includes a clamping shell 4, the upper surface of the clamping shell 4 is fixedly installed with the lower surface of the support ring 24 through a connecting column, the inner wall of the clamping shell 4 is rotatably connected with an annular gear 41 with an arc groove, and the outer surface of the clamping shell 4 is fixedly installed with a driving motor 42, and one end of the output shaft of the driving motor 42 is meshed with the annular gear 41 through a gear.

[0055] Specifically, in order to limit the outer clamping plate 44, a limiting groove 43 is fixedly installed on the inner wall of the clamping shell 4, and the inner wall of the limiting groove 43 is slidably plugged with the outer surface of the outer clamping plate 44, and the lower surface of the outer clamping plate 44 is slidably plugged with the inner wall of the arc groove of the annular gear plate 41 through the column.

[0056] Specifically, in order to limit the inner clamping plate 52, the inner clamping mechanism also includes a limiting sleeve 5, which is fixedly installed on the outer surface of the outer clamping plate 44. In order to drive the inner clamping plate 52 to move, the inner wall of the limiting sleeve 5 is rotatably connected to a driving screw 51 through a bearing. The outer surface of the driving screw 51 is threadedly connected to one end of the inner clamping plate 52, and one end of the inner clamping plate 52 is slidably inserted into the inner wall of the groove of the limiting sleeve 5.

[0057] Specifically, in order to prevent the inner clamping plate 52 from reversing, an adjusting slot 53 is fixedly installed on the lower surface of the limiting sleeve 5, and a card plate 54 with an electromagnet is slidably inserted into the inner wall of the adjusting slot 53. A connecting spring 55 is fixedly installed at one end of the card plate 54, and one end of the connecting spring 55 is fixedly installed to the inner wall of the adjusting slot 53. One end of the electromagnet of the card plate 54 is slidably inserted into the inner wall of the limiting sleeve 5 and magnetically connected. A magnetic block is fixedly installed on the inner wall of the limiting sleeve 5 to facilitate magnetic connection with the electromagnet on the card plate 54.

[0058] Specifically, in order to drive the driving screw 51 to rotate, the upper surface of the clamping shell 4 is rotatably connected to a transmission rod 6 with a bevel gear through a bearing seat, one end of the transmission rod 6 is slidably plugged into the inner wall of the driving screw 51, and the outer surface of the clamping shell 4 is rotatably connected to an annular limiting groove 61 through a connecting plate, and the inner wall of the annular limiting groove 61 is rotatably connected to a transmission bevel gear disk 62 with a tooth groove, and the transmission bevel gear disk 62 is meshed with the bevel gear of the transmission rod 6, and a rotating motor 63 with a gear is fixedly installed on the upper surface of the clamping shell 4, and the output shaft gear of the rotating motor 63 is meshed with the tooth groove of the transmission bevel gear disk 62, and a positioning module 64 is fixedly installed on the outer side surface of the inner clamping plate 52. The positioning module 64 can locate the position of the inner clamping plate 52, and the center of the ring can be obtained by multiple positioning modules 64 distributed in a ring, so that the position where the solidified soil pile needs to be plugged in can be obtained, which is convenient for accurate positioning of the solidified soil pile.

[0059] The present invention provides a construction method for a silt geological prefabricated solidified soil pile composite foundation treatment device, comprising the following steps:

[0060] S1: Prefabricated solidified soil piles: soil, curing agent and appropriate amount of water are mixed in proportion and prefabricated through steps such as stirring, molding and curing. After the solidified soil piles are inserted into the foundation, the strength is further enhanced through chemical reaction, thereby improving the overall bearing capacity of the foundation;

[0061] Site investigation and design: First, according to the project requirements and geological conditions, determine the layout, pile diameter, pile length and pile spacing of prefabricated solidified soil piles, and carry out detailed construction design;

[0062] Prefabrication of solidified soil piles: Mix soil, curing agent and water according to the designed ratio, and after sufficient mixing, form them into molds and place them in the curing site for curing to ensure that the pile body has sufficient strength;

[0063] S2: After the pile driver 1 drives the clamping shell 4 to descend, one end of the vertical guide tube is sleeved, and the driving motor 42 on the clamping shell 4 is started. The driving motor 42 drives the annular gear plate 41 in the clamping shell 4 to rotate through the gear, so that the outer clamping plate 44 in the limiting sliding groove 43 is driven to move relatively and contact the guide tube through the deflection of the arc groove, thereby clamping the guide tube and driving the screw rod 51 to move on the transmission rod 6;

[0064] S3: The rotating motor 63 on the clamping shell 4 is started, and the transmission bevel gear plate 62 is driven to rotate in the annular limit groove 61 through the transmission of the gear, and the transmission rod 6 engaged therewith is driven to rotate, and the transmission rod 6 drives the driving screw 51 to rotate in the limit sleeve 5, so that the inner clamping plate 52 moves along the groove of the limit sleeve 5, and when it encounters the annular groove of the limit sleeve 5, the inner clamping plate 52 rotates together with the driving screw 51, and the inner clamping plate 52 is transformed from the upward direction to the downward direction, so as to fit the inner wall of the guide tube, and the electromagnet on the clamping plate 54 in the clamping groove 53 is adjusted. After the power is turned on, the connecting spring 55 is stretched, and after sliding and plugging with the groove at the other end of the limiting sleeve 5, the arc-shaped groove of the limiting sleeve 5 is closed to prevent the inner clamping plate 52 from rotating synchronously when the driving screw 51 is reversed. After the driving screw 51 is reversed, due to the limit of the clamping plate 54, the inner clamping plate 52 moves back and fits the inner wall of the guide tube to complete the clamping of the guide tube. After the hydraulic system of the pile driver 1 drives the vibration cone to descend, it drives the guide tube to descend. After the vibration hammer 11 is started, it drives the guide tube to vibrate. With the pressing of the hydraulic system, the guide tube is plugged into the predetermined position;

[0065] The length of the guide tube should be adjusted according to the geological depth to ensure that the soil curing pile can be inserted to the designed depth;

[0066] S4: After the guide tubes are arranged, the soil piles to be driven are vertically clamped by the vibrating hammer 11, and the lifting motor 23 on the lifting shell 2 is started, driving the winding roller 21 to release the lifting rigid chain 22. At the same time, the lifting rigid chain 22 drives the support ring 24 to descend, and the limit rod 25 on the support ring 24 leaves the limit plate 26. The connecting motor 32 on the lifting shell 2 is started and drives the selection roller to rotate. When the connection is released, the counterweight quickly drives the connecting lock 33 to descend. After the pile driver 1 is adjusted, the clamping shell 4 is sleeved in the guide tube below, and the inner clamping plate 52 and the outer clamping plate 44 on the clamping shell 4 cooperate to clamp and position the guide tube. The clamping shell 4 is quickly adjusted by the positioning module 64 to keep the inner clamping plate 52 and the outer clamping plate 44 on the clamping shell 4 accurate in clamping.

[0067] S5: After the clamped soil pile can be kept in the inner core of the guide tube, it can rise during the winding process of the connecting rope 31 through the connecting lock 33, and the relative lifting rigid chains 22 are plugged in, so that the lifting rigid chains 22 will not bend, and the accuracy of the soil pile lowering plugging is maintained. The vibrating hammer 11 vibrates the solidified soil pile into the silt layer through the vibration force, and the hydraulic system of the pile driver 1 assists in adjusting the insertion depth and insertion speed to ensure that the pile body can be inserted evenly and stably;

[0068] The solidified soil pile is vibrated into the guide pipe by using the pile driver 1 and the vibrating hammer 11, and the insertion depth and speed are adjusted by the hydraulic system to ensure the verticality and position accuracy of the pile body;

[0069] S6: In order to prevent excessive moisture in the silt geology from affecting the stability of the solidified soil piles, the excess moisture is discharged through the drainage system to accelerate the solidification and settlement process of the foundation;

[0070] S7: After the solidification piles are inserted and the drainage treatment is completed, a period of maintenance is carried out. After the foundation reaches the designed bearing capacity, the foundation is tested to ensure that the treatment effect meets the project requirements.

[0071] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A silt geological prefabricated solidified soil pile composite foundation treatment device, comprising a pile driver (1) and a vibrating hammer (11), wherein the vibrating hammer (11) is arranged at one end of the pile driver (1), and is characterized in that: It also includes a connecting device and a clamping device installed on the outer surface of the vibration hammer (11); The connecting device is located on the outer surface of the vibrating hammer (11) and drives the clamping device to move up and down. The connecting device comprises a lifting mechanism and a connecting mechanism. The lifting mechanism comprises a lifting rigid chain (22). The release of the lifting rigid chain (22) drives the clamping device to move down. The connecting mechanism comprises a connecting lock (33). The rising of the connecting lock (33) drives the two relative lifting rigid chains (22) to be plugged in. The clamping device is located on the outer surface of the connecting device and clamps the guide tube to be used. The clamping device includes an external clamping mechanism, an internal clamping mechanism and a positioning module (64). The external clamping mechanism includes an external clamping plate (44). The movement of the external clamping plate (44) clamps the outside of the guide tube. The internal clamping mechanism includes an internal clamping plate (52). The relative movement of the internal clamping plate (52) clamps the inner wall of the guide tube.

2. The silt geological prefabricated solidified soil pile composite foundation treatment device according to claim 1 is characterized by: The lifting mechanism also includes a lifting shell (2), the lifting shell (2) is fixedly mounted on the outer surface of the vibrating hammer (11), the inner wall of the lifting shell (2) is rotatably connected to a winding roller (21) with a gear through a bearing, the outer surface of the winding roller (21) is fixedly mounted to one end of the lifting rigid chain (22), a lifting motor (23) is fixedly mounted on the outer surface of the lifting shell (2), one end of the output shaft of the lifting motor (23) is fixedly mounted to one end of one of the winding rollers (21), and the gear of one of the winding rollers (21) drives one end of the other winding roller (21) to be fixedly mounted through a gear set.

3. The silt geological prefabricated solidified soil pile composite foundation treatment device according to claim 2 is characterized by: A support ring (24) is fixedly mounted on one end of the lifting rigid chain (22), a limit rod (25) is fixedly mounted on the outer surface of the support ring (24), a limit plate (26) is fixedly mounted on the outer surface of the lifting shell (2), and one end of the limit rod (25) is slidably plugged into the outer surface of the limit plate (26).

4. The device for treating composite foundation of silt geological prefabricated solidified soil piles according to claim 3 is characterized by: The inner wall of the lifting shell (2) is rotatably connected to a wire roller (3) via a bearing, a connecting rope (31) is fixedly mounted on the outer surface of the wire roller (3), a connecting motor (32) is fixedly mounted on the outer surface of the lifting shell (2), one end of the output shaft of the connecting motor (32) is fixedly mounted to one end of the wire roller (3) to drive the wire roller (3) to rotate, the inner wall of the connecting lock (33) is slidably plugged into the outer surface of the lifting rigid chain (22), a counterweight (34) is fixedly mounted on the outer surface of the lifting rigid chain (22), and one end of the connecting rope (31) is fixedly mounted to the upper surface of the counterweight (34).

5. The device for treating composite foundation of silt geological prefabricated solidified soil piles according to claim 4 is characterized by: The external clamping mechanism also includes a clamping shell (4), the upper surface of the clamping shell (4) is fixedly mounted to the lower surface of the support ring (24) via a connecting column, the inner wall of the clamping shell (4) is rotatably connected to an annular toothed disk (41) with an arc groove, and the outer surface of the clamping shell (4) is fixedly mounted with a driving motor (42), and one end of the output shaft of the driving motor (42) is meshed with the annular toothed disk (41) via a gear.

6. The device for treating composite foundation of silt geological prefabricated solidified soil piles according to claim 5 is characterized by: A limiting slide groove (43) is fixedly installed on the inner wall of the clamping shell (4), the inner wall of the limiting slide groove (43) is slidably plugged with the outer surface of the outer clamping plate (44), and the lower surface of the outer clamping plate (44) is slidably plugged with the inner wall of the arc groove of the annular gear disk (41) through a column.

7. The device for treating composite foundation of silt geological prefabricated solidified soil piles according to claim 6 is characterized by: The inner clamping mechanism also includes a limiting sleeve (5), which is fixedly mounted on the outer surface of the outer clamping plate (44), and the inner wall of the limiting sleeve (5) is rotatably connected to a driving screw (51) via a bearing, and the outer surface of the driving screw (51) is threadedly connected to one end of the inner clamping plate (52), and one end of the inner clamping plate (52) is slidably plugged into the inner wall of the groove of the limiting sleeve (5).

8. The device for treating composite foundation of silt geological prefabricated solidified soil piles according to claim 7 is characterized by: An adjusting slot (53) is fixedly mounted on the lower surface of the limiting sleeve (5), a card plate (54) with an electromagnet is slidably inserted into the inner wall of the adjusting slot (53), a connecting spring (55) is fixedly mounted on one end of the card plate (54), one end of the connecting spring (55) is fixedly mounted on the inner wall of the adjusting slot (53), and one end of the electromagnet of the card plate (54) is magnetically connected to the inner wall of the limiting sleeve (5) after being slidably inserted.

9. The device for treating composite foundation of silt geological prefabricated solidified soil piles according to claim 8, characterized in that: The upper surface of the clamping shell (4) is rotatably connected to a transmission rod (6) with a bevel gear through a bearing seat, and one end of the transmission rod (6) is slidably plugged into the inner wall of the driving screw (51). The outer surface of the clamping shell (4) is rotatably connected to an annular limit groove (61) through a connecting plate, and the inner wall of the annular limit groove (61) is rotatably connected to a transmission bevel gear disk (62) with teeth, and the transmission bevel gear disk (62) is meshed with the bevel gear of the transmission rod (6). A rotating motor (63) with gears is fixedly installed on the upper surface of the clamping shell (4), and the output shaft gear of the rotating motor (63) is meshed with the teeth of the transmission bevel gear disk (62). The positioning module (64) is fixedly installed on the outer side surface of the inner clamping plate (52).

10. A construction method of a silt geological prefabricated solidified soil pile composite foundation treatment device, using the silt geological prefabricated solidified soil pile composite foundation treatment device according to any one of claims 1 to 9, characterized in that: S1: Prefabricated solidified soil piles: soil, curing agent and appropriate amount of water are mixed in proportion and prefabricated through stirring, molding and curing steps. After the solidified soil piles are inserted into the foundation, the strength is further enhanced through chemical reaction, thereby improving the overall bearing capacity of the foundation; S2: After the pile driver (1) drives the clamping shell (4) to descend, one end of the vertical guide tube is sleeved, and the driving motor (42) on the clamping shell (4) is started. The driving motor (42) drives the annular gear plate (41) in the clamping shell (4) to rotate through the gear, thereby driving the outer clamping plate (44) in the limiting sliding groove (43) to move relatively and contact the guide tube through the deflection of the arc groove, thereby clamping the guide tube and driving the screw rod (51) to move on the transmission rod (6); S3: The rotating motor (63) on the clamping housing (4) is started, and the transmission bevel gear (62) is driven to rotate in the annular limiting groove (61) through the transmission of the gear, and the transmission rod (6) meshing therewith is driven to rotate, and the transmission rod (6) drives the driving screw (51) to rotate in the limiting sleeve (5), so that the inner clamping plate (52) moves along the groove of the limiting sleeve (5), and when it encounters the annular groove of the limiting sleeve (5), the inner clamping plate (52) rotates together with the driving screw (51), and the inner clamping plate (52) is transformed from the upward direction to the downward direction, so as to fit the inner wall of the guide tube, and the clamping plate (54) in the adjusting clamping groove (53) is adjusted. ) After the electromagnet on the upper part is energized, the connecting spring (55) is stretched and slidably plugged into the groove at the other end of the limiting sleeve (5), thereby closing the arc-shaped groove of the limiting sleeve (5) to prevent the driving screw (51) from driving the inner clamping plate (52) to rotate synchronously when the driving screw (51) is reversed. After the driving screw (51) is reversed, due to the limit of the clamping plate (54), the inner clamping plate (52) moves back and fits the inner wall of the guide tube to complete the clamping of the guide tube. After the hydraulic system of the pile driver (1) drives the vibration cone to descend, it drives the guide tube to descend. After the vibration hammer (11) is started, it drives the guide tube to vibrate. With the pressure of the hydraulic system, the guide tube is plugged into a predetermined position; S4: After the guide tubes are arranged, the soil piles to be driven are vertically clamped by the vibrating hammer (11), and the lifting motor (23) on the lifting shell (2) is started, driving the winding roller (21) to release the lifting rigid chain (22). At the same time, the lifting rigid chain (22) drives the support ring (24) to descend, and the limit rod (25) on the support ring (24) leaves the limit plate (26). The connecting motor (32) on the lifting shell (2) is started and drives the selection roller (21) to release the lifting rigid chain (22). When the connection is released, the counterweight quickly drives the connection lock (33) to descend, and the pile driver (1) is adjusted so that the clamping shell (4) is sleeved in the guide tube below. The inner clamping plate (52) and the outer clamping plate (44) on the clamping shell (4) cooperate to clamp and position the guide tube, and the clamping shell (4) is quickly adjusted through the positioning module (64) to keep the inner clamping plate (52) and the outer clamping plate (44) on the clamping shell (4) accurate in clamping; S5: After the clamped soil pile can be kept in the inner core of the guide tube, it can rise during the winding process of the connecting rope (31) by connecting the lock head (33), and the lifting rigid chains (22) that are opposite to each other are plugged in, so that the lifting rigid chains (22) will not bend, and the accuracy of the lowering and plugging of the soil pile is maintained. The vibrating hammer (11) vibrates the solidified soil pile into the silt layer through the vibration force, and the hydraulic system of the pile driver (1) assists in adjusting the insertion depth and insertion speed to ensure that the pile body can be inserted evenly and stably; S6: In order to prevent excessive moisture in the silt geology from affecting the stability of the solidified soil piles, the excess moisture is discharged through the drainage system to accelerate the solidification and settlement process of the foundation; S7: After the solidification piles are inserted and the drainage treatment is completed, a period of maintenance is carried out. After the foundation reaches the designed bearing capacity, the foundation is tested to ensure that the treatment effect meets the project requirements.

Images