Cast-in-place pile hole cleaning pouring construction system

Abstract

The invention discloses a cast-in-place pile hole cleaning pouring construction system, and belongs to the technical field of cast-in-place pile construction. The bottom end of a pouring pipe is placed at the bottom of a pile hole, a hole cleaning pump sucks sludge at the bottom of the pile hole into the hole cleaning pipe, and the sludge is pumped upwards along with the hole cleaning pipe and discharged to the top end of the pouring pipe; a filter at the top end of the pouring pipe filters gravel with the diameter exceeding the limit of the sludge so that the sludge can be converted into slurry, the slurry is conveyed into the pile hole again from the pouring pipe, and the hole cleaning procedure is completed; then, the pouring pipe, the hole cleaning pipe and a dismounting filter at the top end of the pouring pipe do not need to be taken out, concrete is directly conveyed to the top end of the pouring pipe, the concrete is injected into the pile hole, and then the pouring pipe is controlled to be lifted upwards to keep the preset distance between the bottom end of the pouring pipe and the concrete pouring face till the pouring procedure is completed; therefore, according to the cast-in-place pile hole cleaning and pouring construction system, seamless connection of the hole cleaning procedure and the pouring procedure is achieved, and potential quality hazards, caused by procedure intervals, of the cast-in-place pile are eliminated.

Description

Technical Field

[0001] This invention relates to the field of cast-in-place pile construction technology, and in particular to a cast-in-place pile hole cleaning and pouring construction system. Background Technology

[0002] Cast-in-place piles are piles constructed by drilling in situ and then pouring in concrete or reinforced concrete. Using a auger drill, in-situ drilling and concrete pouring are employed. During drilling, mud slurry is used to prevent borehole collapse, and the slurry circulation removes drilling debris. After reaching the required depth, the borehole is cleaned to remove debris settled at the bottom. However, the borehole cleaning process is separate from the pouring process, requiring multiple cleaning steps and repeated checks of sediment thickness. Controlling the intervals between these steps is difficult, easily leading to deterioration of the mud slurry's properties and a decrease in the strength of the cast-in-place pile. Summary of the Invention

[0003] The present invention aims to solve the technical problems existing in the above-mentioned related technologies, and proposes a construction system for cleaning and pouring cast-in-place piles, so as to achieve seamless connection between the cleaning process and the pouring process, and eliminate the quality hazards of cast-in-place piles caused by the interval between processes.

[0004] According to an embodiment of the present invention, a construction system for cleaning and pouring cast-in-place piles includes a pouring pipe, a cleaning pipe, a cleaning pump, a concrete delivery pump, and a controller. The cleaning pipe is located inside the pouring pipe, and its upper and lower ends extend out of the pouring pipe. The cleaning pump is connected to the top end of the cleaning pipe, and a removable filter is provided at the top end of the pouring pipe. The controller is configured to: The bottom end of the pouring pipe is placed at the bottom of the pile hole, and the hole cleaning pump is controlled to suck the mud and slag at the bottom of the pile hole into the hole cleaning pipe. The cleaning pump is controlled to discharge the sludge in the cleaning pipe to the top of the casting pipe, and the filter filters the sludge to turn it into slurry. The cleaning pump is shut down, the filter is removed, and the concrete delivery pump is controlled to deliver concrete to the top of the pouring pipe. Raise the bottom end of the pouring pipe to maintain a preset distance between the bottom end of the pouring pipe and the concrete pouring surface.

[0005] The grouting pile hole cleaning and pouring construction system according to embodiments of the present invention has at least the following beneficial effects: The bottom end of the pouring pipe is placed at the bottom of the pile hole; the hole cleaning pump sucks the mud and slag from the bottom of the pile hole into the hole cleaning pipe, allowing the mud and slag to be pumped upwards and discharged to the top of the pouring pipe; the filter at the top of the pouring pipe filters out sand and gravel exceeding the diameter limit from the mud and converts the mud and slag into mud slurry; the mud slurry is then transported back into the pile hole from the pouring pipe, completing the hole cleaning process; subsequently, without removing the pouring pipe and the hole cleaning pipe, the filter at the top of the pouring pipe is removed, and concrete is directly delivered to the top of the pouring pipe, allowing the concrete to be injected into the pile hole; then, the pouring pipe is controlled to rise upwards to maintain a preset distance between the bottom end of the pouring pipe and the concrete pouring surface until the pouring process is completed; therefore, the grouting pile hole cleaning and pouring construction system of the present invention achieves seamless connection between the hole cleaning process and the pouring process, eliminating potential quality hazards of the grouting pile caused by process intervals; it simplifies the construction process, reduces manual intervention, lowers construction costs, and shortens the construction cycle of a single grouting pile by 30%-40%.

[0006] According to some embodiments of the present invention, raising the bottom end of the pouring pipe to maintain the bottom end of the pouring pipe at a preset distance from the concrete pouring surface includes: The flow rate of concrete delivered by the concrete pump to the pouring pipe is obtained, and the diameter of the pile hole is obtained; The rising speed of the concrete pouring surface is calculated based on the flow rate and the diameter, and the bottom end of the pouring pipe is raised at the rising speed.

[0007] According to some embodiments of the present invention, the controller is further configured to: After the pile hole is poured, the bottom end of the pouring pipe is removed from the pile hole; Place the bottom end of the casting pipe in clean water and start the cleaning pump to clean the casting pipe.

[0008] According to some embodiments of the present invention, controlling the hole-cleaning pump to draw mud from the bottom of the pile hole into the hole-cleaning pipe includes: The circulation flow rate of the cleaning pipe is controlled to be 10-15 m³ / h. 3 / h, and control the pressure difference of the pile hole to be less than or equal to 0.1MPa.

[0009] According to some embodiments of the present invention, controlling the cleaning pump to discharge the sludge in the cleaning pipe to the top of the casting pipe includes: If the filter retains less than or equal to 50g of sediment within 30 minutes, the cleaning pump will be shut down.

[0010] According to some embodiments of the present invention, before performing the control of the concrete delivery pump to deliver concrete to the top of the pouring pipe, the controller is further configured to: Concrete is poured into the top of the pouring pipe until the pouring height exceeds 5m.

[0011] According to some embodiments of the present invention, controlling the concrete delivery pump to deliver concrete to the top of the pouring pipe includes: The pressure gradient of the concrete delivery pump is controlled to be 0.5-1.0 MPa / m.

[0012] According to some embodiments of the present invention, the casting pipe comprises: The skeleton layer is made of metal wires wound in a spiral shape; The substrate layer wraps around the inner and outer sides of the skeleton layer; An adhesive layer is applied to both the inner and outer sides of the substrate layer.

[0013] According to some embodiments of the present invention, there are multiple cleaning pipes, which are arranged along the axis of the casting pipe, and the top ends of all the cleaning pipes are connected to the cleaning pump.

[0014] According to some embodiments of the present invention, a baffle is provided at the bottom end of the casting pipe, the baffle extends circumferentially along the casting pipe, and the outer side wall of the baffle is sealed to the inner side wall of the pile hole. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a cast-in-place pile hole cleaning and pouring construction system according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the construction system for cleaning and pouring cast-in-place piles according to an embodiment of the present invention from another angle; Figure 3 This is a control flowchart of a cast-in-place pile hole cleaning and pouring construction system according to an embodiment of the present invention; Figure 4 This is a flowchart illustrating the control process of maintaining a preset distance between the bottom end of the pouring pipe and the concrete pouring surface in one embodiment of the present invention.

[0016] Attached reference numerals: 100 for pouring pipe, 110 for partition plate, 120 for hopper, and 200 for cleaning pipe. Detailed Implementation

[0017] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0018] In the description of this invention, it should be understood that the terms front, back, up, down, axial, circumferential, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0019] In the description of this invention, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0020] In the description of this invention, it should be noted that terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of the present invention, not all embodiments.

[0022] This invention relates to the field of construction equipment for building foundation engineering, specifically to a grouting pile hole cleaning and pouring construction system, which is applicable to the construction of grouting piles with mud wall protection in industrial and civil buildings, bridges, municipal engineering and other fields, for construction scenarios with pile diameters ranging from 600mm to 3000mm and pile lengths not exceeding 100m, and is especially suitable for complex geological conditions such as soft soil and karst.

[0023] The existing construction methods for cast-in-place piles have the following technical defects: The process of cleaning the hole and pouring the concrete is separated. Multiple cleanings (first cleaning, second cleaning) and repeated checks of the sediment thickness are required. The process interval is difficult to control and can easily lead to the deterioration of the mud properties inside the hole. Traditional hole cleaning methods (forward circulation / reverse circulation) can easily cause drastic fluctuations in water pressure inside the pile hole. According to the requirements of the Technical Specification for Building Pile Foundations JGJ94-2008, sudden changes in water pressure can increase the probability of hole collapse by more than 30%, which in turn can lead to quality problems such as diameter expansion and diameter reduction. During the grouting process, the slag that collapses from the sidewall of the pile hole is easy to mix with the concrete, which leads to a reduction in concrete strength. In particular, end-bearing piles require a slag thickness of ≤50mm, and traditional processes cannot meet the high-precision control requirements. The installation and removal of the grouting pipe is time-consuming and labor-intensive, and the concrete pouring surface is not effectively isolated from the mud, so the compactness of the pouring depends on manual control. Existing hole cleaning devices only have a single hole cleaning function and lack a coordinated design for pouring, thus failing to solve the problem of process connection.

[0024] Reference Figures 1 to 4 As shown, the present invention provides a construction system for cleaning and pouring cast-in-place piles.

[0025] Reference Figures 1 to 2 As shown, the grouting pile hole cleaning and pouring construction system includes a pouring pipe 100, three hole cleaning pipes 200, a hole cleaning pump, a concrete delivery pump, and a controller. The three hole cleaning pipes 200 are installed inside the pouring pipe 100. The top ends of the three hole cleaning pipes 200 extend upwards from the top end of the pouring pipe 100, and the bottom ends of the three hole cleaning pipes 200 extend downwards from the bottom end of the pouring pipe 100. The hole cleaning pump is connected to the top ends of the three hole cleaning pipes 200. The three hole cleaning pipes 200 are arranged with the axis of the pouring pipe 100. A filter is detachably connected to the top end of the pouring pipe 100. The filter is provided with a clearance hole to avoid the hole cleaning pipes 200.

[0026] The casting pipe 100 includes a skeleton layer, a substrate layer, and an adhesive layer. The skeleton layer is made of metal wire wound in a spiral shape. The substrate layer wraps around the inner and outer sides of the skeleton layer, and the adhesive layer covers the inner and outer sides of the substrate layer.

[0027] A baffle 110 is provided at the bottom end of the casting pipe 100. The baffle 110 extends outward and gradually slopes downward from the casting pipe 100, forming a conical funnel structure that is smaller at the top and larger at the bottom. A hopper 120 is provided at the top end of the casting pipe 100. The hopper 120 has a conical funnel structure that is larger at the top and smaller at the bottom. The top ends of multiple cleaning pipes 200 extend from the hopper 120. The filter is a filter baffle, which is detachably installed on the top of the hopper 120.

[0028] Specifically, the cast-in-place pile hole cleaning and pouring construction system includes an integrated corrugated pipe assembly, an upper operation system, a lower isolation pouring assembly, and an intelligent control system.

[0029] The integrated corrugated pipe assembly includes a casting pipe 100 and three cleaning pipes 200.

[0030] The pouring pipe 100 and the three cleaning pipes 200 adopt a multi-pipe coaxial integral molding structure: the outer layer is the pouring pipe 100 for pumping concrete (inner diameter ≥150mm, outer diameter ≥180mm), and the inner layer is the cleaning pipe 200 (inner diameter ≤50mm, outer diameter ≤60mm). The cleaning pipes 200 are evenly distributed in three groups along the inner wall of the pouring pipe 100. The three groups of cleaning pipes 200 are fixed by spiral winding (to avoid damaging the adhesive layer), and an elastic sealing sleeve is set at the connection between the cleaning pipe 200 and the pouring pipe 100.

[0031] The casting pipe 100 is a corrugated pipe, and its core structure is as follows: The skeleton layer is made of high-strength galvanized steel wire spiral skeleton with a wire diameter of 3-5mm, a pitch of 20-30mm, and a tensile strength of ≥1500MPa. Substrate layer: Multi-layer organic fiber fabric (aramid fiber + polyester fiber interwoven), ≥4 layers, each layer thickness 0.8-1.2mm, tensile strength ≥300N / 5cm; Adhesive layer: Multiple wear-resistant adhesive films are set on both the inner and outer sides. The inner layer is a butyl rubber sealing layer (1.5mm thick), the middle layer is a polyurethane wear-resistant layer (2mm thick, Shore hardness ≥90A), and the outer layer is an anti-aging polyvinyl chloride protective layer (1mm thick). Corrugated parameters: U-shaped corrugation design, wave height 15-20mm, wave pitch 30-40mm, bending radius ≤500mm (to meet the needs of reel storage), pressure resistance ≥15MPa.

[0032] The upper working system includes a pipe reel, a concrete feeding hopper, and a power unit.

[0033] Pipe winding wheel: Adapted to the flexible characteristics of corrugated pipes with a diameter ≥1.2m, with a rubber anti-slip layer on the surface, and a torque sensor range of 0-500N. m, real-time monitoring of the tension status of the pouring pipe 100.

[0034] Hopper 120: Volume ≥ 3m³, the lower discharge port adopts a flange + clamp combination connection (fits the top of the casting pipe 100), and has a built-in quick-release filter. The filter is a filter plate (pore size ≤ 5mm, material is high manganese steel).

[0035] The power unit includes a concrete delivery pump and a hole cleaning pump.

[0036] Concrete pump: driven by an S-valve motor, rated pressure ≥10MPa, maximum conveying capacity ≥68m³ / h 3 / h (refer to the parameters of Sany HBG6010C pipe pile pump), the pump outlet is equipped with a special corrugated pipe connector (with anti-detachment buckle).

[0037] Hole cleaning pump: rated pressure 0.3-0.5MPa, flow rate adjustable, outlet facing the top of hopper 120, return port connected to the top of three hole cleaning pipes 200, and sealing gaskets (resistant to mud corrosion) installed at the joints.

[0038] The lower isolation casting component includes a partition plate 110.

[0039] The partition 110 is a conical funnel shape. The partition 110 is made of high-strength wear-resistant rubber sheet (5cm thick) with built-in steel wire mesh reinforcement. The funnel cone angle is 60° and the bottom diameter is adapted to the pile diameter (error ≤ ±50mm). Connection method: The top of the partition 110 and the bottom of the pouring pipe 100 adopt a snap-on quick-release structure. The bottom of the cleaning pipe 200 extends 1cm beyond the bottom of the pouring pipe 100, and the cleaning pipe 200 is located in the central area of ​​the inner cavity of the partition 110. Sealing design: An elastic sealing ring is set on the outer edge of the partition 110, with a gap of ≤10mm between it and the pile hole wall.

[0040] The intelligent control system includes a sensor array and a control module.

[0041] Sensor group: depth sensor (measurement accuracy ±1cm), pressure sensor (monitors the pressure inside the pipe), flow sensor (monitors the mud flow rate of the cleaning pipe 200), and tilt sensor (monitors the verticality of the baffle 110).

[0042] Control module: Integrated PLC controller to realize the start and stop linkage of the hole cleaning pump and concrete delivery pump, automatic adjustment of the lifting speed of the pipe rolling wheel, and real-time calculation of the pouring height.

[0043] Reference Figure 3 As shown, the controller is configured to perform the following steps.

[0044] Step S100: Place the bottom end of the pouring pipe 100 at the bottom of the pile hole, and control the cleaning pump to suck the mud from the bottom of the pile hole into the cleaning pipe 200. Step S200: Control the hole cleaning pump to discharge the mud and sludge in the hole cleaning pipe 200 to the top of the casting pipe 100, and filter the mud and sludge to turn the mud and sludge into mud slurry. In step S300, the hole cleaning pump is shut down, the filter is removed, and the concrete delivery pump is controlled to deliver concrete to the top of the pouring pipe 100. Step S400: Raise the bottom end of the pouring pipe 100 so that the bottom end of the pouring pipe 100 and the concrete pouring surface are maintained at a preset distance.

[0045] The bottom end of the pouring pipe 100 is placed at the bottom of the pile hole. The cleaning pump sucks the mud and sludge at the bottom of the pile hole into the cleaning pipe 200, allowing the mud and sludge to be pumped upwards along with the cleaning pipe 200 and discharged to the top of the pouring pipe 100. The filter at the top of the pouring pipe 100 filters out sand and gravel with diameters exceeding the limit, converting the mud and sludge into mud slurry. The mud slurry is then transported back into the pile hole from the pouring pipe 100, completing the cleaning process. Afterwards, without removing the pouring pipe 100 and the cleaning pipe 200, the filter at the top of the pouring pipe 100 is removed, and concrete is directly delivered to the top of the pouring pipe 100, allowing the concrete to be injected into the pile hole. Then, the pouring pipe 100 is controlled to be raised upwards to maintain the preset distance between the bottom end of the pouring pipe 100 and the concrete pouring surface until the pouring process is completed.

[0046] Therefore, the grouting pile hole cleaning and pouring construction system of the present invention achieves seamless connection between the hole cleaning process and the pouring process, eliminates the quality risks of grouting piles caused by process intervals, simplifies the construction process, reduces manual intervention, lowers construction costs, and shortens the construction cycle of a single grouting pile by 30%-40%.

[0047] Reference Figure 3 As shown, the controller is also configured to perform the following steps.

[0048] Step S500: After the pile hole is poured, the bottom end of the pouring pipe 100 is removed from the pile hole. Step S600: Place the bottom end of the casting pipe 100 in clean water and start the hole cleaning pump to clean the casting pipe 100.

[0049] The amount of concrete residue inside the pouring pipe 100 is reduced, and the cleaning efficiency of the pouring pipe 100 and the cleaning pipe 200 is improved, so that the pouring pipe 100 can be reused.

[0050] Reference Figure 4 As shown, step S400 includes the following steps.

[0051] Step S410: Obtain the flow rate of concrete delivered by the concrete pump to the pouring pipe 100, and obtain the diameter of the pile hole. Step S420: Calculate the rising speed of the concrete pouring surface based on the flow rate and diameter, and raise the bottom end of the pouring pipe 100 at the rising speed.

[0052] The volume and cross-sectional area of ​​the pile hole are calculated based on the pile hole diameter. The time required to fill the pile hole is calculated based on the pumped concrete flow rate. The volume of concrete injected into the pile hole per unit time is obtained by dividing the volume by the time. The rise height of the concrete pouring surface per unit time can be calculated by dividing the volume of concrete injected into the pile hole per unit time by the cross-sectional area, which is the rise speed of the concrete pouring surface. This ensures that the bottom end of the pouring pipe 100 is raised at the rising speed to maintain the preset distance between the bottom end of the pouring pipe 100 and the concrete pouring surface.

[0053] Step S100 includes the following steps.

[0054] Step S110: Control the circulation flow rate of the cleaning tube 200 to 10-15 m³ / h. 3 / h, and control the pressure difference of the pile hole to be less than or equal to 0.1MPa.

[0055] The pressure difference inside the pile hole is controlled within 0.1 MPa to reduce the collapse rate.

[0056] Step S200 includes the following steps.

[0057] Step S210: If the weight of sediment intercepted by the filter within 30 minutes is less than or equal to 50g, proceed to step S300.

[0058] If the filter intercepts less than or equal to 50g of sediment within 30 minutes, it proves that there are fewer large volumes of sand and gravel in the mud at the bottom of the pile hole, indicating that the hole cleaning process has been completed.

[0059] Before performing step S300, the controller is also configured to perform the following steps.

[0060] Step S220: Inject concrete into the top of the pouring pipe 100 until the pouring height exceeds 5m.

[0061] The initial stage of concrete pouring utilizes the self-weight of the concrete.

[0062] Step S300 includes the following steps.

[0063] Step S310: Control the pressure gradient of the concrete delivery pump to be 0.5-1.0 MPa / m.

[0064] Specifically, the construction process is as follows.

[0065] Equipment installation and positioning: The pouring pipe 100 and the partition plate 110 are lowered to the bottom of the pile hole using a crane. The level of the partition plate 110 is calibrated using an inclination sensor to ensure that the partition plate 110 is coaxial with the pile hole. The pouring pipe 100 is lowered as a whole using a reel to avoid local bending (bending angle ≤ 90°).

[0066] Circulating hole cleaning operation: A filter is installed on the top of hopper 120, and the hole cleaning pump is started to form a closed loop of "sludge at the bottom of the pile → suction through the hole cleaning pipe → filtration by the filter in hopper 120 → return through the pouring pipe 100". Hole cleaning parameters: mud circulation flow rate controlled at 10-15m³ / h 3 / h, pressure difference inside the pile hole ≤0.1MPa; Qualification criteria: The amount of sediment retained by the filter is ≤50g for 30 minutes, combined with sediment thickness testing (≤50mm for end-bearing piles, ≤100mm for friction piles).

[0067] Concrete pouring operation: Remove the filter from the top of hopper 120 and continuously inject concrete (slump 100-230mm) into hopper 120. The initial stage is constructed using the self-weight of the concrete. When the pouring height is ≥5m, start the concrete delivery pump to pressurize the pouring, and control the pressure gradient at 0.5-1.0MPa / m. Utilize the flexible characteristics of the corrugated pipe 100 to synchronously adjust the pipe length through the pipe rolling wheel. The hoisting speed (0.5-1m / min) is controlled by the tension feedback of the hose reel, keeping the partition plate 110 always 5-10cm above the concrete pouring surface.

[0068] Pipe cleaning: After pouring, lift the partition plate 110 away from the concrete surface by ≥30cm, and put the partition plate 110 into clean water. Start the cleaning pump and introduce high-pressure water (pressure ≥1.5MPa) to flush the residual concrete in the pouring pipe 100. Utilize the smooth characteristics of the corrugated inner wall of the pouring pipe 100 (coating friction coefficient ≤0.15) to ensure thorough cleaning.

[0069] The present invention has the following beneficial effects.

[0070] Quality improvement: Closed-loop cleaning improves the accuracy of sediment thickness control to ±5mm, meeting the highest standard of JGJ94-2008 specification; The 110 partition design prevents concrete from mixing with mud and slag, increasing the standard value of concrete cube compressive strength (fcu) by 15%-20%. During the cleaning process, the pressure difference inside the pile hole is controlled within 0.1 MPa, which reduces the collapse rate by more than 80%.

[0071] Efficiency improvement: Integrated operation reduces the construction cycle of a single cast-in-place pile by 30%-40% (traditional process requires 4-6 hours for hole cleaning and pouring, while this system only requires 2-3 hours). The weight of the casting pipe 100 and the hole cleaning pipe 200 is 60% lighter than that of traditional steel pipes (weight ≤15kg per meter), which reduces the difficulty of hoisting and reduces labor costs by 50%.

[0072] Smart and environmentally friendly: Real-time sensor monitoring and automatic control reduce human error. The mud recycling rate is ≥90%, which reduces waste mud discharge and meets ecological and environmental protection requirements.

[0073] Advantages of Optimized Material for Casting Pipe 100: The 100 casting pipe adopts a steel wire spiral skeleton + multi-layer organic fiber coated strong film design. The wear resistance of the 100 casting pipe is 3 times higher than that of traditional steel pipes (service life ≥ 500 piles) and the corrosion resistance is 2 times higher (suitable for mud environment with pH value 4-12). The 100mm flexible corrugated pipe has a small bending radius, reduces the space occupied by the reel by 40%, and lowers transportation costs by 30%. The inner wall of the adhesive-reinforced membrane of the 100-ton pouring pipe is smooth, reducing concrete residue by 80% and improving pipe cleaning efficiency by 50%.

[0074] Example 1: Construction of end-bearing piles for bridge engineering; Pile diameter: 1200mm, pile length: 60m, geological conditions: silty clay + moderately weathered rock layer; Equipment parameters: Casting pipe 100 corrugated pipe inner diameter 168mm, outer diameter 190mm, corrugation height 18mm, corrugation pitch 35mm; Cleaning pipe 200 corrugated pipe inner diameter 40mm, outer diameter 50mm, corrugation height 10mm, corrugation pitch 25mm; steel wire skeleton diameter 4mm, organic fiber layers 4 layers, total adhesive layer thickness 4.5mm; Construction results: Hole cleaning time was 45 minutes, sediment thickness was 32 mm, no hole collapse occurred during the pouring process, concrete density test pass rate was 100%, and cleaning of the pouring pipe took only 8 minutes.

[0075] Example 2: Construction of friction piles for high-rise buildings; Pile diameter: 800mm, pile length: 40m, geological conditions: deep soft soil; Equipment parameters: Casting pipe 100 corrugated pipe inner diameter 150mm, outer diameter 175mm, corrugation height 15mm, corrugation pitch 30mm; Cleaning pipe 200 corrugated pipe inner diameter 32mm, outer diameter 40mm, corrugation height 8mm, corrugation pitch 20mm; steel wire skeleton diameter 3mm, organic fiber layers 4 layers, total adhesive layer thickness 4mm. Construction results: Hole cleaning time was 30 minutes, sediment thickness was 85 mm, local hole collapse occurred during the pouring process, the fallen soil was isolated by partition 110, the concrete strength was not affected, and the equipment transportation space occupied by the vehicle was reduced by 35% compared with traditional equipment.

[0076] This invention also provides a method for cleaning and pouring construction of cast-in-place piles, which is applied to a cast-in-place pile cleaning and pouring construction system. The cast-in-place pile cleaning and pouring construction system includes a pouring pipe, a cleaning pipe, a cleaning pump, and a concrete conveying pump. The cleaning pipe is located inside the pouring pipe, and its upper and lower ends extend out of the pouring pipe. The cleaning pump is connected to the top of the cleaning pipe, and a removable filter is provided at the top of the pouring pipe.

[0077] Reference Figure 3 As shown, the construction method includes the following steps.

[0078] Step S100: Place the bottom end of the pouring pipe 100 at the bottom of the pile hole, and control the cleaning pump to suck the mud from the bottom of the pile hole into the cleaning pipe 200. Step S200: Control the hole cleaning pump to discharge the mud and sludge in the hole cleaning pipe 200 to the top of the casting pipe 100, and filter the mud and sludge to turn the mud and sludge into mud slurry. In step S300, the hole cleaning pump is shut down, the filter is removed, and the concrete delivery pump is controlled to deliver concrete to the top of the pouring pipe 100. Step S400: Raise the bottom end of the pouring pipe 100 so that the bottom end of the pouring pipe 100 and the concrete pouring surface are maintained at a preset distance.

[0079] This invention also provides a system including a memory, a processor, and a program stored in the memory and executable on the processor. When the program is executed by the processor, it implements the construction method described in the above embodiments.

[0080] Taking the example of a system where the processor and memory can be connected via a bus, memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the control processor, and these remote memories can be connected to the controller via a network.

[0081] The non-transitory software program and instructions required to implement the construction method of the above embodiments are stored in memory. When executed by a processor, the construction method of the above embodiments is performed. For example, executing... Figure 3 Method steps S100 to S600 Figure 4 The method steps S410 to S420, etc.

[0082] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0083] Furthermore, one embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for performing the above-described construction method. Exemplarily, the above-described method is executed... Figures 3 to 4 The methods and steps in the text.

[0084] It is worth noting that, since the computer-readable storage medium of the present invention can execute the construction method of any of the above embodiments, the specific implementation method and technical effect of the computer-readable storage medium of the present invention can be referred to the specific implementation method and technical effect of the construction method of any of the above embodiments.

[0085] Furthermore, one embodiment of the present invention also provides a computer program product, including a computer program or computer instructions, which are stored in a computer-readable storage medium. A processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium and executes the computer program or computer instructions, causing the computer device to perform the above-described construction method. Exemplarily, the above-described method is performed... Figures 3 to 4 The methods and steps in the text.

[0086] It is worth noting that since the computer program product of this embodiment can execute the construction method of any of the above embodiments, the specific implementation method and technical effect of the computer program product of this embodiment can refer to the specific implementation method and technical effect of the construction method of any of the above embodiments.

[0087] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically include computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0088] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

Claims

1. A system for cleaning and pouring concrete for cast-in-place piles, characterized in that, It includes a pouring pipe, a cleaning pipe, a cleaning pump, a concrete delivery pump, and a controller. The cleaning pipe is located inside the pouring pipe, and its upper and lower ends extend out of the pouring pipe. The cleaning pump is connected to the top of the cleaning pipe, and the top of the pouring pipe is equipped with a removable filter. The controller is configured to: The bottom end of the pouring pipe is placed at the bottom of the pile hole, and the hole cleaning pump is controlled to suck the mud and slag at the bottom of the pile hole into the hole cleaning pipe. The cleaning pump is controlled to discharge the sludge in the cleaning pipe to the top of the casting pipe, and the filter filters the sludge to turn it into slurry. The cleaning pump is shut down, the filter is removed, and the concrete delivery pump is controlled to deliver concrete to the top of the pouring pipe. Raise the bottom end of the pouring pipe to maintain a preset distance between the bottom end of the pouring pipe and the concrete pouring surface.

2. The cast-in-place pile hole cleaning and pouring construction system according to claim 1, characterized in that, The step of raising the bottom end of the pouring pipe to maintain a preset distance between the bottom end of the pouring pipe and the concrete pouring surface includes: The flow rate of concrete delivered by the concrete pump to the pouring pipe is obtained, and the diameter of the pile hole is obtained; The rising speed of the concrete pouring surface is calculated based on the flow rate and the diameter, and the bottom end of the pouring pipe is raised at the rising speed.

3. The cast-in-place pile hole cleaning and pouring construction system according to claim 1, characterized in that, The controller is also configured to: After the pile hole is poured, the bottom end of the pouring pipe is removed from the pile hole; Place the bottom end of the casting pipe in clean water and start the cleaning pump to clean the casting pipe.

4. The cast-in-place pile hole cleaning and pouring construction system according to claim 1, characterized in that, The control of the hole-cleaning pump to suck mud from the bottom of the pile hole into the hole-cleaning pipe includes: The circulation flow rate of the cleaning pipe is controlled to be 10-15 m³ / h. 3 / h, and control the pressure difference of the pile hole to be less than or equal to 0.1MPa.

5. The cast-in-place pile hole cleaning and pouring construction system according to claim 1, characterized in that, The control of the hole-cleaning pump to discharge the sludge in the hole-cleaning pipe to the top of the casting pipe includes: If the filter retains less than or equal to 50g of sediment within 30 minutes, the cleaning pump will be shut down.

6. The cast-in-place pile hole cleaning and pouring construction system according to claim 1, characterized in that, Before executing the control to deliver concrete from the concrete pump to the top of the pouring pipe, the controller is further configured to: Concrete is poured into the top of the pouring pipe until the pouring height exceeds 5m.

7. The cast-in-place pile hole cleaning and pouring construction system according to claim 1, characterized in that, The control of the concrete delivery pump to deliver concrete to the top of the pouring pipe includes: The pressure gradient of the concrete delivery pump is controlled to be 0.5-1.0 MPa / m.

8. The cast-in-place pile hole cleaning and pouring construction system according to claim 1, characterized in that, The casting pipe includes: The skeleton layer is made of metal wires wound in a spiral shape; The substrate layer wraps around the inner and outer sides of the skeleton layer; An adhesive layer is applied to both the inner and outer sides of the substrate layer.

9. The cast-in-place pile hole cleaning and pouring construction system according to claim 1, characterized in that, There are multiple cleaning pipes, which are arranged along the axis of the casting pipe, and the top ends of all the cleaning pipes are connected to the cleaning pump.

10. The cast-in-place pile hole cleaning and pouring construction system according to claim 1, characterized in that, The bottom end of the casting pipe is provided with a partition plate, which extends circumferentially along the casting pipe, and the outer side wall of the partition plate is sealed to the inner side wall of the pile hole.

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