Construction method and device of suspended water-stop curtain mixing piles for deep foundation pit based on BIM

Abstract

The present invention relates to the field of engineering construction technology, and specifically discloses a BIM-based deep foundation pit suspended water-stop curtain mixing pile construction method and device, including a mixing shaft body, one end of the mixing shaft body is evenly provided with a plurality of spraying ports, the outer side of the mixing shaft body is evenly and movably installed with a plurality of movable blocks, the movable blocks are provided with auxiliary mechanisms, and the mixing shaft body is evenly and movably installed with a plurality of rotating rods on the outer side near one end of the spraying port. The present invention is provided with a rotating rod and a movable rod, the movable rod abuts against the inner wall of the pile hole and squeezes the spring telescopic rod, the spring telescopic rod squeezes the pressure sensor, the pressure sensor transmits the measured pressure value to the background control system, the background control system compares the multiple pressure values, if the multiple pressure values ​​exceed the preset difference, it means that the force bearing capacity of the inner wall of the pile hole is uneven, through the continuous downward movement of the mixing shaft body, the device can detect the stability of the inner wall of the pile hole at different depths.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering construction, and in particular to a BIM-based deep foundation pit suspended water-stop curtain mixing pile construction method and device. Background Art

[0002] The suspended curtain is a foundation pit water-stopping engineering structure. Its principle is to set up a waterproof or low-permeability waterproof structure around the foundation pit to lengthen the groundwater seepage path, effectively reduce the amount of water inflow from the foundation pit, and reduce the water level drop outside the foundation pit, thereby greatly reducing the surface settlement caused by precipitation. Cement mixing pile refers to an effective form of soft foundation treatment. It is a method that uses cement as the main agent of the curing agent, uses a mixing pile machine to spray cement into the soil and fully mix it, so that a series of physical and chemical reactions occur between the cement and the soil, hardening the soft soil and improving the foundation strength.

[0003] At present, in the process of water-stop curtain construction, the pile hole is usually dug first, and then grouting is carried out inside the pile hole. Due to different geological environments, the stability inside the pile hole is also different. During the grouting process, cement slurry is directly sprayed on the inner wall of the pile hole. If the stability of the inner wall of the pile hole is poor, it will directly affect the quality of the grouting. In severe cases, it will cause the collapse of the pile hole, causing delays in the project period. At present, the detection method for the pile hole wall is mostly manual additional detection, the detection steps are cumbersome, and it will also increase the labor intensity of the staff. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art and to propose a BIM-based deep foundation pit suspended water-stop curtain mixing pile construction method and device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A BIM-based deep foundation pit suspended water-stop curtain mixing pile construction method and device comprises a mixing shaft body, one end of which is evenly provided with a plurality of spraying ports, a plurality of movable blocks are evenly and movably mounted on the outside of the mixing shaft body, an auxiliary mechanism is provided on the movable blocks, a plurality of rotating rods are evenly and movably mounted on the outside of the mixing shaft body near one end of the spraying port, and a detection mechanism is provided on the rotating rods.

[0007] Preferably, the stirring shaft body is provided with a first groove on the outer wall near the movable block, a lifting slider is slidably installed inside the first groove, a connecting block is installed on the side of the lifting slider away from the first groove, an electric telescopic rod is embedded in the bottom of the connecting block, the telescopic end of the electric telescopic rod faces the movable block, and the telescopic end of the electric telescopic rod is connected to the top of the movable block.

[0008] Preferably, a first rotating motor is installed on the inner wall of one end of the first slot away from the spraying port, and a threaded rod is rotatably installed on the inner wall of one end of the first slot close to the spraying port, the output end of the first rotating motor faces the threaded rod, and the output end of the first rotating motor is connected to the threaded rod, and the thread of the threaded rod passes through the lifting slider.

[0009] Preferably, the auxiliary mechanism includes a movable plate and an arc plate, a third groove is opened on the side of the movable block away from the stirring shaft body, a movable plate is movably installed on the side of the third groove away from the bottom end of the inner wall, and a second groove is opened on the side of the movable block close to the stirring shaft body, and two arc plates are movably installed inside the second groove.

[0010] Preferably, the third slot is embedded with a rotating shaft on the inner wall near both ends of the top of the movable plate, and the end of the rotating shaft near the movable plate is connected to the movable plate. An arc-shaped slide groove is provided at the top of the inner wall of the second slot, and a movable slider is installed on the top of the arc plate, and the movable slider is slidably installed inside the arc-shaped slide groove.

[0011] Preferably, the stirring shaft body is evenly embedded with multiple electric extension rods near the upper outer side of the rotating rod, and the extended ends of the electric extension rods are away from the stirring shaft body. The extended ends of the electric extension rods are connected to fixed blocks, and the bottom of the fixed block is connected to the top of the rotating rod.

[0012] Preferably, a second rotating motor is embedded and installed on one side of the fixed block close to the electric extension rod, and the mounting end of the second rotating motor is connected to the extension end of the electric extension rod. A rotating motor is embedded and installed on the top of the rotating rod, and the mounting end of the rotating motor is connected to the bottom of the fixed block.

[0013] Preferably, the detection mechanism comprises a movable rod, a fourth slot is formed on the rotating rod at a side away from the stirring shaft body, and the movable rod is slidably mounted inside the fourth slot.

[0014] Preferably, a pressure sensor is installed at the bottom end of the inner wall of the fourth slot, a spring telescopic rod is installed on the side of the movable rod close to the pressure sensor, and one end of the spring telescopic rod facing the pressure sensor is connected to the pressure sensor.

[0015] Preferably, a BIM-based deep foundation pit suspended water-stop curtain mixing pile construction method is applicable to the above-mentioned construction device, and the construction method further includes the following steps:

[0016] Step 1: When the stirring shaft body moves downward from the top of the pile hole to a preset position, it is extended by the electric extension rod, so that the rotating rod moves close to the pile hole wall, the movable rod abuts against the inner wall of the pile hole and squeezes the spring telescopic rod, the spring telescopic rod squeezes the pressure sensor, and the pressure sensor transmits the measured pressure value to the background control system, and the background control system compares multiple pressure values. If multiple pressure values ​​exceed the preset difference, it means that the force bearing capacity of the inner wall of the pile hole is uneven. Through the continuous downward movement of the stirring shaft body, the device can detect the stability of the inner wall of the pile hole at different depths;

[0017] Step 2: After the stirring shaft body is lowered to the preset position, the grouting port starts to spray, and multiple electric extension rods are extended to different use positions. The rotating motor drives the rotating rod to rotate, so that the end wall direction of the rotating rod and the length direction of the electric extension rod are in a horizontal state. Under the rotation of the stirring shaft body, the multiple rotating rods can stir the cement slurry in the pile hole. The multiple rotating rods are in different positions, which can make the device stir the cement slurry more uniformly; under the spraying of the grouting port, the stirring shaft body maintains a synchronous rising speed with the spraying speed, so that the cement slurry inside the pile hole is always below the bottom of the stirring shaft body;

[0018] Step 3: When it is necessary to test the quality of cement slurry during the pouring of the pile hole, the first rotating motor drives the threaded rod to rotate during the grouting process inside the pile hole, and drives the lifting slider to move inside the first slot, so that the movable block can move up and down on the outside of the stirring shaft body, and the movable block moves to the upper surface of the cement slurry. Then the rotating shaft drives the movable plate to rotate, so that the movable plate no longer blocks the third slot, and the electric telescopic rod drives the movable block to extend into the cement slurry. Then the cement slurry can enter the third slot for collection. This operation method can be used to sample and test the cement slurry; the setting of multiple movable blocks enables the device to sample and test cement slurries at different depths, and sample and test the cement slurries sampled multiple times and compare them;

[0019] Step 4: When the device needs to be cleaned after use, move the slider in the arc-shaped slide groove to make the two arc plates move away from each other. The arc plates on the multiple movable blocks can abut against each other to form a circular ring on the outside of the stirring shaft body. The movable block moves up and down on the outside of the stirring shaft body so that the bottom of the movable block and the bottom of the arc plate can scrape the outside of the stirring shaft body. The movable block and the arc plate scrape the outside of the stirring shaft body to scrape off the mud attached to the outside of the stirring shaft body. The staff sprays water on the outside of the stirring shaft body to clean the outside of the stirring shaft body.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention is provided with a rotating rod and a movable rod, the movable rod abuts against the inner wall of the pile hole and squeezes the spring telescopic rod, the spring telescopic rod squeezes the pressure sensor, the pressure sensor transmits the measured pressure value to the background control system, the background control system compares multiple pressure values, if the multiple pressure values ​​exceed the preset difference, it means that the force bearing capacity of the inner wall of the pile hole is uneven, through the continuous downward movement of the stirring shaft body, the device can detect the stability of the inner wall of the pile hole at different depths, through this operation mode, the stability of the inner wall of the pile hole can be detected before the pile hole is sprayed, to prevent the inner wall of the pile hole from collapsing during the later spraying process, and increase the convenience of use of the device;

[0022] After the stirring shaft body descends to the preset position, the spraying port starts to spray, and the multiple electric extension rods are extended to different use positions. The rotating motor drives the rotating rod to rotate, so that the end wall direction of the rotating rod and the length direction of the electric extension rod are in a horizontal state. Under the rotation of the stirring shaft body, the multiple rotating rods can stir the cement slurry in the pile hole. The multiple rotating rods are in different positions, which can make the device stir the cement slurry more evenly and increase the use effect of the device.

[0023] In the present invention, by providing a movable block and an arc plate, when it is necessary to detect the quality of cement slurry during the pouring of the pile hole, the movable block moves to the upper surface of the cement slurry, and then the rotating shaft drives the movable plate to rotate, so that the movable plate no longer blocks the third slot, and the electric telescopic rod drives the movable block to extend into the interior of the cement slurry, and then the cement slurry can enter the interior of the third slot for collection. Through this operation mode, sampling and testing of the cement slurry can be achieved; the provision of multiple movable blocks enables the device to sample and test cement slurries at different depths, sample and test cement slurries sampled multiple times and compare them, thereby increasing the accuracy of the test results, so that the staff can have an accurate assessment of the quality of the finished product of the pile foundation;

[0024] When the device needs to be cleaned after use, the movable slider slides in the arc-shaped slide groove, causing the two arc plates to move away from each other, and the arc plates on the multiple movable blocks can abut against each other to form a circular ring on the outside of the stirring shaft body. The movable block moves up and down on the outside of the stirring shaft body, so that the bottom of the movable block and the bottom of the arc plate can scrape the outside of the stirring shaft body. The scraping of the outside of the stirring shaft body by the movable block and the arc plate can scrape off the mud attached to the outside of the stirring shaft body, and the staff can spray water on the outside of the stirring shaft body to clean the outside of the stirring shaft body. This operation method can increase the cleaning effect of the device and reduce the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0027] Figure 3 For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0028] Figure 4 It is a schematic diagram of the installation structure of the curved plate of the present invention;

[0029] Figure 5 This is a schematic diagram of the installation structure of the movable slider of the present invention;

[0030] Figure 6 It is a schematic diagram of the rotating shaft installation structure of the present invention;

[0031] Figure 7 It is a schematic diagram of the installation structure of the electric extension rod and the fixing block of the present invention;

[0032] Figure 8 It is a schematic diagram of the installation structure of the second rotating electrical machine of the present invention;

[0033] Fig. 9 It is a schematic diagram of the installation structure of the rotating motor and the pressure sensor of the present invention.

[0034] In the figure: 1. stirring shaft body; 2. first slot; 3. threaded rod; 4. first rotating motor; 5. lifting slider; 6. connecting block; 7. electric telescopic rod; 8. movable block; 9. movable plate; 10. arc plate; 11. spraying port; 12. fixed block; 13. rotating rod; 14. movable rod; 15. second slot; 16. arc slide; 17. movable slider; 18. third slot; 19. rotating shaft; 20. electric extension rod; 21. second rotating motor; 22. rotating motor; 23. fourth slot; 24. pressure sensor; 25. spring telescopic rod. DETAILED DESCRIPTION

[0035] 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.

[0036] Reference Figure 1-9The BIM-based deep foundation pit suspended water-stop curtain mixing pile construction method and device include a mixing shaft body 1, a plurality of grouting ports 11 are evenly opened at one end of the mixing shaft body 1, a plurality of movable blocks 8 are evenly and movably installed on the outside of the mixing shaft body 1, and an auxiliary mechanism is provided on the movable block 8. A plurality of rotating rods 13 are evenly and movably installed on the outside of the mixing shaft body 1 near one end of the grouting port 11, and a detection mechanism is provided on the rotating rod 13. The auxiliary mechanism can sample and detect the cement slurry in the pile foundation pouring, and can also assist the staff to clean the mixing shaft body 1. The detection mechanism can detect the stability of the inner wall of the pile foundation hole to increase the stability of the construction effect.

[0037] As a technical optimization solution of the present invention, a first slot 2 is provided on the outer wall of the stirring shaft body 1 near the movable block 8, a lifting slider 5 is slidably installed inside the first slot 2, a connecting block 6 is installed on the side of the lifting slider 5 away from the first slot 2, an electric telescopic rod 7 is embedded and installed at the bottom of the connecting block 6, the telescopic end of the electric telescopic rod 7 faces the movable block 8, and the telescopic end of the electric telescopic rod 7 is connected to the top of the movable block 8. The sliding of the lifting slider 5 in the first slot 2 can make the movable block 8 move up and down on the outside of the stirring shaft body 1, and the electric telescopic rod 7 can drive the movable block 8 to extend.

[0038] As a technical optimization solution of the present invention, a first rotating motor 4 is installed on the inner wall of one end of the first slot 2 away from the spraying port 11, and a threaded rod 3 is rotatably installed on the inner wall of one end of the first slot 2 close to the spraying port 11, and the output end of the first rotating motor 4 faces the threaded rod 3, and the output end of the first rotating motor 4 is connected to the threaded rod 3, and the threaded rod 3 threads through the lifting slider 5. The first rotating motor 4 drives the threaded rod 3 to rotate, and the lifting slider 5 can be driven to move inside the first slot 2.

[0039] As a technical optimization scheme of the present invention, the auxiliary mechanism includes a movable plate 9 and an arc plate 10. A third slot 18 is provided on the side of the movable block 8 away from the stirring shaft body 1. The third slot 18 is movably mounted with a movable plate 9 on the side away from the bottom end of the inner wall. A second slot 15 is provided on the side of the movable block 8 close to the stirring shaft body 1. Two arc plates 10 are movably mounted inside the second slot 15. The two arc plates 10 move away from each other, and then the arc plates 10 on the multiple movable blocks 8 abut against each other to form a circular ring on the outside of the stirring shaft body 1. Then, by moving the movable block 8 up and down on the outside of the stirring shaft body 1, the bottom of the movable block 8 and the bottom of the arc plate 10 can scrape the outside of the stirring shaft body 1. By scraping the outside of the stirring shaft body 1 by the movable block 8 and the arc plate 10, the mud attached to the outside of the stirring shaft body 1 can be scraped off.

[0040] As a technical optimization solution of the present invention, the third slot 18 is embedded with a rotating shaft 19 on the inner wall near both ends of the top of the movable plate 9, and one end of the rotating shaft 19 near the movable plate 9 is connected to the movable plate 9. The top of the inner wall of the second slot 15 is provided with an arc-shaped slide 16, and a movable slider 17 is installed on the top of the arc plate 10. The movable slider 17 is slidably installed inside the arc-shaped slide 16. The rotating shaft 19 drives the movable plate 9 to rotate, which can open the blockage of the third slot 18, and the sliding of the movable slider 17 in the arc-shaped slide 16 can drive the arc plate 10 to move.

[0041] As a technical optimization solution of the present invention, a plurality of electric extension rods 20 are evenly embedded and installed on the upper side of the stirring shaft body 1 near the outer side of the rotating rod 13, and the extension end of the electric extension rod 20 is away from the stirring shaft body 1. The extension end of the electric extension rod 20 is connected to the fixed block 12, and the bottom of the fixed block 12 is connected to the top of the rotating rod 13. The electric extension rod 20 can drive the rotating rod 13 to move away from the stirring shaft body 1.

[0042] As a technical optimization solution of the present invention, a second rotary motor 21 is embedded and installed on one side of the fixed block 12 close to the electric extension rod 20, and the mounting end of the second rotary motor 21 is connected to the extension end of the electric extension rod 20. A rotary motor 22 is embedded and installed on the top of the rotating rod 13, and the mounting end of the rotating motor 22 is connected to the bottom of the fixed block 12. The second rotary motor 21 can drive the fixed block 12 to rotate, so that the rotating rod 13 rotates to an upward state. Through this operation mode, the rotating rod 13 can be protected when the rotating rod 13 is not in use, and the rotating motor 22 can drive the rotating rod 13 to rotate, so that the rotating rod 13 can be converted into a use state according to different use requirements.

[0043] As a technical optimization solution of the present invention, the detection mechanism includes a movable rod 14, a fourth slot 23 is formed on the side of the rotating rod 13 away from the stirring shaft body 1, and the movable rod 14 is slidably installed inside the fourth slot 23. The stability of the inner wall of the pile hole is detected by the movable rod 14 abutting against the inner wall of the pile hole and then moving in the fourth slot 23.

[0044] As a technical optimization solution of the present invention, a pressure sensor 24 is installed at the bottom end of the inner wall of the fourth slot 23, and a spring telescopic rod 25 is installed on the side of the movable rod 14 close to the pressure sensor 24, and one end of the spring telescopic rod 25 facing the pressure sensor 24 is connected to the pressure sensor 24. When the movable rod 14 abuts against the inner wall of the pile hole, under the continuous extension of the electric extension rod 20, the movable rod 14 moves toward the inside of the fourth slot 23, and the movable rod 14 squeezes the spring telescopic rod 25, and the spring telescopic rod 25 squeezes the pressure sensor 24. When the electric extension rod 20 extends to a preset position, the pressure sensor 24 transmits the measured pressure value to the background control system, and the background control system compares multiple pressure values. If multiple pressure values ​​exceed the preset difference, it means that the force bearing capacity of the inner wall of the pile hole is uneven. Through this operation mode, the stability of the inner wall of the pile hole can be detected before the pile hole is sprayed, so as to prevent the inner wall of the pile hole from collapsing during the later spraying process, thereby increasing the convenience of use of the device.

[0045] As a technical optimization solution of the present invention, a BIM deep foundation pit suspended water-stop curtain mixing pile construction method is provided, which is applicable to the above-mentioned construction device, and the construction method further includes the following steps:

[0046] Step 1: When the stirring shaft body 1 moves downward from the top of the pile hole to a preset position, the electric extension rod 20 is extended to make the rotating rod 13 move close to the pile hole wall, the movable rod 14 abuts against the inner wall of the pile hole and squeezes the spring telescopic rod 25, the spring telescopic rod 25 squeezes the pressure sensor 24, and the pressure sensor 24 transmits the measured pressure value to the background control system, and the background control system compares multiple pressure values. If the multiple pressure values ​​exceed the preset difference, it means that the force bearing capacity of the inner wall of the pile hole is uneven. Through the continuous downward movement of the stirring shaft body 1, the device can detect the stability of the inner wall of the pile hole at different depths;

[0047] Step 2: After the stirring shaft body 1 is lowered to the preset position, the grouting port 11 starts to spray, and the multiple electric extension rods 20 are extended to different use positions. The rotating motor 22 drives the rotating rod 13 to rotate, so that the end wall direction of the rotating rod 13 and the length direction of the electric extension rod 20 are in a horizontal state. Under the rotation of the stirring shaft body 1, the multiple rotating rods 13 can stir the cement slurry in the pile hole. The multiple rotating rods 13 are in different positions, which can make the device stir the cement slurry more uniformly; under the spraying of the grouting port 11, the stirring shaft body 1 maintains a synchronous rising speed with the spraying speed, so that the cement slurry inside the pile hole is always below the bottom of the stirring shaft body 1;

[0048] Step 3: When it is necessary to test the quality of cement slurry during the pouring of the pile hole, the first rotating motor 4 drives the threaded rod 3 to rotate during the grouting process inside the pile hole, and drives the lifting slider 5 to move inside the first slot 2, so that the movable block 8 can move up and down on the outside of the stirring shaft body 1, and the movable block 8 moves to the upper surface of the cement slurry. Then the rotating shaft 19 drives the movable plate 9 to rotate, so that the movable plate 9 no longer blocks the third slot 18, and the electric telescopic rod 7 drives the movable block 8 to extend into the interior of the cement slurry. Then the cement slurry can enter the interior of the third slot 18 for collection. Through this operation mode, sampling and testing of cement slurry can be achieved; the provision of multiple movable blocks 8 enables the device to sample and test cement slurries of different depths, and sample, test and compare cement slurries sampled multiple times;

[0049] Step 4: When the device needs to be cleaned after use, move the slider 17 in the arc-shaped slide groove 16 to make the two arc plates 10 move away from each other. The arc plates 10 on the multiple movable blocks 8 can abut against each other to form a circular ring on the outside of the stirring shaft body 1. The movable block 8 moves up and down on the outside of the stirring shaft body 1, so that the bottom of the movable block 8 and the bottom of the arc plate 10 can scrape the outside of the stirring shaft body 1. The movable block 8 and the arc plate 10 scrape the outside of the stirring shaft body 1, so that the mud attached to the outside of the stirring shaft body 1 can be scraped off, and the staff can spray water on the outside of the stirring shaft body 1 to clean the outside of the stirring shaft body 1.

[0050] When the present invention is in use, the end of the stirring shaft body 1 in the device away from the spraying port 11 is connected to the existing stirring equipment, and the connection method is an existing mature technology, so it will not be elaborated too much. The spraying port 11 is connected to the existing spraying equipment, and this technology is an existing mature technology, so it will not be elaborated too much. The pressure sensor 24 used in the present device is an existing mature technology, so its specific working form and principle will not be elaborated too much. The use method of the present device is that the existing drilling device drills the pile hole, and after the drill rod leaves the borehole, the present device enters the pile hole through the device for operation and use. The present device controls the electrical equipment in the device by setting a background control system;

[0051] At present, the construction process of the water-stop curtain is to drill holes at the preset construction position, and multiple pile holes are used to enclose the construction area, and then cement slurry is poured into the pile holes. The construction process of pouring cement slurry into the pile holes is that a steel cage is set inside a pile hole, and then cement slurry is poured. No steel cage is set inside the adjacent pile holes on the two sides of the pile hole with a steel cage, and cement slurry is directly poured. When this device is in use, the pile hole with a steel cage is constructed by directly pouring cement slurry, and the pile hole without a steel cage is constructed in the following way.

[0052] The stirring shaft body 1 moves downward from the top of the pile hole. During the movement of the stirring shaft body 1, when the stirring shaft body 1 moves to the preset position, the electric extension rod 20 is extended to make the rotating rod 13 move close to the pile hole wall. When the movable rod 14 abuts the inner wall of the pile hole, under the continuous extension of the electric extension rod 20, the movable rod 14 moves toward the inside of the fourth slot 23, and the movable rod 14 squeezes the spring telescopic rod 25, and the spring telescopic rod 25 squeezes the pressure sensor 24. When the electric extension rod 20 extends to the preset position, the pressure sensor 24 transmits the measured pressure value to the background control system, and the background control system compares multiple pressure values. If multiple pressure values ​​exceed the preset difference, it means that the force bearing capacity of the inner wall of the pile hole is uneven. Through this operation mode, the stability of the inner wall of the pile hole can be detected before the pile hole is sprayed, so as to prevent the inner wall of the pile hole from collapsing during the later spraying process, thereby increasing the convenience of use of the device; through the continuous downward movement of the stirring shaft body 1, the device can detect the stability of the inner wall of the pile hole at different depths, thereby increasing the accuracy of the detection result.

[0053] After the stirring shaft body 1 is lowered to the preset position, the grouting port 11 starts to spray, and the multiple electric extension rods 20 are extended to different use positions, and the rotating motor 22 drives the rotating rod 13 to rotate, so that the end wall direction of the rotating rod 13 and the length direction of the electric extension rod 20 are in a horizontal state, and at this time the movable rod 14 is located in the opposite direction of the rotation direction of the stirring shaft body 1, and then under the rotation of the stirring shaft body 1, the multiple rotating rods 13 can stir the cement slurry in the pile hole. Since the multiple rotating rods 13 are in different positions, the stirring of the rotating rods 13 can make the device stir the cement slurry more uniformly; under the spraying of the grouting port 11, the stirring shaft body 1 maintains a synchronous rising speed with the spraying speed, so that the cement slurry inside the pile hole is always below the bottom of the stirring shaft body 1;

[0054] After the rotating rod 13 has finished stirring the cement slurry in a pile hole, when the cement slurry attached to the outer side of the rotating rod 13 has not yet solidified, high-pressure water can be directly used to flush it to ensure the functional stability of the rotating rod 13 and the installed equipment.

[0055] When it is necessary to detect the quality of cement slurry during the pouring of the pile hole, the first rotating motor 4 drives the threaded rod 3 to rotate during the grouting process inside the pile hole. The threaded rod 3 can drive the lifting slider 5 to move inside the first slot 2 during the rotation, so that the movable block 8 can move up and down on the outside of the stirring shaft body 1. During the pouring of cement slurry, the movable block 8 moves to the upper surface of the cement slurry, and then the rotating shaft 19 drives the movable plate 9 to rotate, so that the movable plate 9 no longer blocks the third slot 18. Then the electric telescopic rod 7 drives the movable block 8 to extend toward the cement slurry, so that the movable block 8 can extend into the inside of the cement slurry, and then the cement slurry can enter the inside of the third slot 18 for collection. The movable block 8 moves away from the cement slurry under the drive of the lifting slider 5. Through this operation mode, sampling and testing of cement slurry can be achieved; the setting of multiple movable blocks 8 enables the device to sample and test cement slurries of different depths, and then sample and test the cement slurries sampled multiple times and compare them, which can make the final test result more accurate and convenient for the staff to evaluate the quality of the finished pile foundation.

[0056] When the device needs to be cleaned after use, the sliding block 17 is moved in the arc groove 16 to make the two arc plates 10 move away from each other, and then the arc plates 10 on the multiple movable blocks 8 can abut against each other to form a circular ring usage form on the outside of the stirring shaft body 1, and then the movable block 8 is moved up and down on the outside of the stirring shaft body 1, so that the bottom of the movable block 8 and the bottom of the arc plate 10 can scrape the outside of the stirring shaft body 1. The scraping of the outside of the stirring shaft body 1 by the movable block 8 and the arc plate 10 can scrape off the mud attached to the outside of the stirring shaft body 1, and the staff can spray water on the outside of the stirring shaft body 1 to clean the outside of the stirring shaft body 1. This operation method can increase the cleaning effect of the device and reduce the labor intensity of the staff.

[0057] When the device is not in use, the second rotating motor 21 drives the fixed block 12 to rotate, so that the rotating rod 13 can be rotated to an upward state. Through this operation mode, the rotating rod 13 can be protected when the rotating rod 13 is not in use.

[0058] 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 BIM-based deep foundation pit suspended water-stop curtain mixing pile construction device, comprising a mixing shaft body (1), characterized in that: A plurality of spraying ports (11) are evenly arranged at one end of the stirring shaft body (1); a plurality of movable blocks (8) are evenly and movably mounted on the outer side of the stirring shaft body (1); an auxiliary mechanism is provided on the movable block (8); a plurality of rotating rods (13) are evenly and movably mounted on the outer side of the stirring shaft body (1) at one end close to the spraying port (11); a detection mechanism is provided on the rotating rods (13); The stirring shaft body (1) is provided with a first slot (2) on an outer wall near the movable block (8); a lifting slider (5) is slidably mounted inside the first slot (2); a connecting block (6) is mounted on a side of the lifting slider (5) away from the first slot (2); an electric telescopic rod (7) is embedded and mounted at the bottom of the connecting block (6); the telescopic end of the electric telescopic rod (7) faces the movable block (8), and the telescopic end of the electric telescopic rod (7) is connected to the top of the movable block (8); A first rotating motor (4) is mounted on the inner wall of one end of the first slot (2) away from the spraying port (11); a threaded rod (3) is rotatably mounted on the inner wall of one end of the first slot (2) close to the spraying port (11); the output end of the first rotating motor (4) faces the threaded rod (3), and the output end of the first rotating motor (4) is connected to the threaded rod (3); and the thread of the threaded rod (3) passes through the lifting slider (5); The auxiliary mechanism comprises a movable plate (9) and an arc plate (10); a third slot (18) is provided on a side of the movable block (8) away from the stirring shaft body (1); the movable plate (9) is movably mounted on the side of the third slot (18) away from the bottom end of the inner wall; a second slot (15) is provided on a side of the movable block (8) close to the stirring shaft body (1); two arc plates (10) are movably mounted inside the second slot (15); The third slot (18) is embedded with a rotating shaft (19) on the inner wall at both ends near the top of the movable plate (9), and one end of the rotating shaft (19) near the movable plate (9) is connected to the movable plate (9). The top of the inner wall of the second slot (15) is provided with an arc-shaped slide groove (16), and a movable slider (17) is installed on the top of the arc-shaped plate (10), and the movable slider (17) is slidably installed inside the arc-shaped slide groove (16).

2. The BIM-based deep foundation pit suspended water-stop curtain mixing pile construction device according to claim 1 is characterized in that: A plurality of electric extension rods (20) are evenly embedded and installed on the upper side of the stirring shaft body (1) near the outer side of the rotating rod (13); the extension ends of the electric extension rods (20) are away from the stirring shaft body (1); the extension ends of the electric extension rods (20) are connected to the fixing blocks (12); and the bottom of the fixing blocks (12) is connected to the top of the rotating rod (13).

3. The BIM-based deep foundation pit suspended water-stop curtain mixing pile construction device according to claim 2 is characterized in that: A second rotating motor (21) is embedded and installed on a side of the fixed block (12) close to the electric extension rod (20), and a mounting end of the second rotating motor (21) is connected to the extension end of the electric extension rod (20). A rotating motor (22) is embedded and installed on the top of the rotating rod (13), and a mounting end of the rotating motor (22) is connected to the bottom of the fixed block (12).

4. The BIM-based deep foundation pit suspended water-stop curtain mixing pile construction device according to claim 3 is characterized in that: The detection mechanism comprises a movable rod (14), the rotating rod (13) is provided with a fourth slot (23) on a side away from the stirring shaft body (1), and the movable rod (14) is slidably mounted inside the fourth slot (23).

5. The BIM-based deep foundation pit suspended water-stop curtain mixing pile construction device according to claim 4 is characterized in that: A pressure sensor (24) is installed at the bottom end of the inner wall of the fourth slot (23), and a spring telescopic rod (25) is installed on the side of the movable rod (14) close to the pressure sensor (24), and one end of the spring telescopic rod (25) facing the pressure sensor (24) is connected to the pressure sensor (24).

6. The BIM-based deep foundation pit suspended water-stop curtain mixing pile construction method is characterized by: The construction method is applicable to the construction device in claim 5 above, and the construction method further comprises the following steps: Step 1: When the stirring shaft body (1) moves downward from the top of the pile hole to a preset position, the electric extension rod (20) is extended, so that the rotating rod (13) moves close to the pile hole wall, the movable rod (14) abuts against the inner wall of the pile hole and squeezes the spring telescopic rod (25), the spring telescopic rod (25) squeezes the pressure sensor (24), and the pressure sensor (24) transmits the measured pressure value to the background control system. The background control system compares multiple pressure values. If the multiple pressure values ​​exceed the preset difference, it means that the force bearing capacity of the inner wall of the pile hole is uneven. Through the continuous downward movement of the stirring shaft body (1), the device detects the stability of the inner wall of the pile hole at different depths; Step 2: After the stirring shaft body (1) is lowered to a preset position, the grouting port (11) starts grouting, the plurality of electric extension rods (20) are extended to different use positions, and the rotating motor (22) drives the rotating rod (13) to rotate, so that the end wall direction of the rotating rod (13) and the length direction of the electric extension rod (20) are in a horizontal state. Under the rotation of the stirring shaft body (1), the plurality of rotating rods (13) stir the cement slurry in the pile hole. The plurality of rotating rods (13) are in different positions, so that the device stirs the cement slurry more evenly. Under the grouting of the grouting port (11), the stirring shaft body (1) maintains a rising speed synchronized with the grouting speed, so that the cement slurry inside the pile hole is always below the bottom of the stirring shaft body (1); Step 3: When it is necessary to detect the quality of cement slurry during the pouring of the pile hole, during the grouting process inside the pile hole, the threaded rod (3) is driven to rotate by the first rotating motor (4), and the lifting slider (5) is driven to move inside the first slot (2), so that the movable block (8) moves up and down on the outside of the stirring shaft body (1), and the movable block (8) moves to the upper surface of the cement slurry. Then, the rotating shaft (19) drives the movable plate (9) to rotate, so that the movable plate (9) no longer blocks the third slot (18), and the electric telescopic rod (7) drives the movable block (8) to extend into the inside of the cement slurry. Then, the cement slurry enters the inside of the third slot (18) for collection. The cement slurry is sampled and tested in this operation mode. The arrangement of multiple movable blocks (8) enables the device to sample and test cement slurries at different depths, and sample and test cement slurries sampled multiple times and compare them. Step 4: When the device needs to be cleaned after use, the movable slider (17) slides in the arc-shaped slide groove (16), so that the two arc-shaped plates (10) move away from each other, and the arc-shaped plates (10) on the multiple movable blocks (8) abut against each other to form a circular ring on the outside of the stirring shaft body (1). The movable block (8) moves up and down on the outside of the stirring shaft body (1), so that the bottom of the movable block (8) and the bottom of the arc-shaped plate (10) scrape the outside of the stirring shaft body (1). The movable block (8) and the arc-shaped plate (10) scrape the outside of the stirring shaft body (1), so that the mud attached to the outside of the stirring shaft body (1) can be scraped off, and the staff can spray water on the outside of the stirring shaft body (1) to clean the outside of the stirring shaft body (1).

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