A construction control method and system of pressure grouting piles, an electronic device and a storage medium

Abstract

The application discloses a construction control method and system of a pressure grouting pile, an electronic device and a storage medium, and belongs to the technical field of engineering machinery. The construction control method of the pressure grouting pile comprises the following steps: pouring concrete into a target drill hole through a conveying pipeline and controlling the upward movement of a spiral drill rod so as to form a pressure grouting pile; determining the actual pouring amount of the concrete in the target drill hole and the current pile length of the pressure grouting pile; querying a target pouring amount corresponding to the current pile length from a concrete pouring curve; wherein the concrete pouring curve is determined according to pressure grouting pile design parameters, and the concrete pouring curve is used for describing the corresponding relationship between the theoretical pouring amount of the concrete and the pile length; calculating a pouring amount error according to the actual pouring amount of the concrete and the target pouring amount, and adjusting the upward movement speed of the spiral drill rod based on the pouring amount error. The application can reasonably and automatically adjust the lifting speed of the spiral drill rod and improve the construction quality of the pressure grouting pile.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, and in particular to a construction control method, system, electronic equipment and storage medium for pressure grouting piles. Background Technology

[0002] During the construction of pressure-grouted piles, it is necessary to simultaneously perform concrete pouring and drill rod lifting operations. Currently, during the concrete pouring process, the drill rod is usually lifted manually or at a fixed speed, which can easily lead to quality problems such as necking, pile breakage, insufficient or excessive filling coefficient.

[0003] Therefore, how to reasonably and automatically adjust the lifting speed of the auger drill rod to improve the construction quality of pressure grouting piles is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this application is to provide a construction control method, system, electronic equipment, and storage medium for pressure grouting piles, which can reasonably and automatically adjust the lifting speed of the auger drill rod to improve the construction quality of pressure grouting piles.

[0005] To address the aforementioned technical problems, this application provides a construction control method for pressure-grown piles, comprising:

[0006] Concrete is poured into the target borehole through a delivery pipeline, and the auger drill rod is controlled to be lifted to form a pressure-grouted pile;

[0007] Determine the actual concrete injection volume in the target borehole and the current pile length of the pressure-grouted pile;

[0008] The target injection volume corresponding to the current pile length is retrieved from the concrete injection curve; wherein, the concrete injection curve is determined according to the design parameters of the pressure-grown pile, and the concrete injection curve is used to describe the correspondence between the theoretical concrete injection volume and the pile length;

[0009] The injection volume error is calculated based on the actual injection volume of concrete and the target injection volume, and the lifting speed of the auger rod is adjusted based on the injection volume error.

[0010] Optionally, before determining the actual concrete injection volume in the target borehole and the current pile length of the pressure-grouted pile, the method further includes:

[0011] A concrete flow meter is used to detect the grouting flow rate and determine the grouting time; wherein the concrete flow meter is installed at the bend of the delivery pipeline;

[0012] The actual concrete volume is calculated based on the injection flow rate and the injection duration.

[0013] Optionally, before determining the actual concrete injection volume in the target borehole and the current pile length of the pressure-grouted pile, the method further includes:

[0014] A pressure sensor is used to detect concrete pressure and determine drill rod parameters and concrete density; wherein, the delivery pipeline is provided with a pressure measuring hole, and the pressure sensor is fixed to the pressure measuring hole by a threaded connection; the concrete pressure is used to describe the pressure exerted by the concrete on the pipe wall of the delivery pipeline.

[0015] The actual concrete injection volume is calculated based on the concrete pressure, the drill rod parameters, and the concrete density.

[0016] Optionally, the delivery pipeline is provided with a plurality of pressure measuring holes, and each pressure measuring hole is equipped with a corresponding pressure sensor;

[0017] Accordingly, pressure sensors are used to detect concrete pressure, including:

[0018] Determine the measured value and installation location of each pressure sensor;

[0019] The weight value of each pressure sensor is determined based on the installation location; wherein the weight value is negatively correlated with the outlet distance, which is the distance between the pressure sensor and the output port of the delivery pipeline;

[0020] The concrete pressure is obtained by weighted calculation based on the measured value and the weight value.

[0021] Optional, also includes:

[0022] A pressure sensor is used to detect concrete pressure; wherein the concrete pressure is used to describe the pressure exerted by the concrete on the wall of the delivery pipeline.

[0023] Determine whether the concrete pressure is less than the pressure threshold for n consecutive strokes;

[0024] If so, an alarm message indicating a cavity condition has been detected will be output, and the lifting speed of the auger rod will be reduced.

[0025] Optionally, reducing the upward speed of the auger drill pipe includes:

[0026] Determine pressure deviation information; wherein, the pressure deviation information includes the difference between the average concrete pressure of each stroke under the void condition and the pressure threshold.

[0027] The speed reduction range is determined based on the pressure deviation information, and the upward speed of the auger drill pipe is reduced based on the speed reduction range.

[0028] Optionally, before reducing the upward speed of the auger rod, the method further includes:

[0029] Record the current lifting speed as a historical speed;

[0030] Accordingly, after reducing the upward speed of the auger drill pipe, the method further includes:

[0031] Determine whether the current concrete pressure is greater than or equal to the pressure threshold.

[0032] If so, the lifting speed of the auger rod will be restored to the historical speed.

[0033] This application also provides a construction control system for pressure-grouted piles, the system comprising:

[0034] The control module is used to inject concrete into the target borehole through the delivery pipeline and control the lifting of the auger drill rod to form a pressure-grouted pile;

[0035] The detection module is used to determine the actual amount of concrete poured into the target borehole and the current pile length of the pressure-grouted pile;

[0036] The query module is used to query the target injection volume corresponding to the current pile length from the concrete injection curve; wherein, the concrete injection curve is determined according to the design parameters of the pressure-grown pile, and the concrete injection curve is used to describe the correspondence between the theoretical concrete injection volume and the pile length;

[0037] The adjustment module is used to calculate the injection volume error based on the actual concrete injection volume and the target injection volume, and adjust the lifting speed of the auger rod based on the injection volume error.

[0038] This application also provides a storage medium storing a computer program thereon, which, when executed, implements the steps of the above-described construction control method for pressure grouting piles.

[0039] This application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor, when calling the computer program in the memory, implements the steps of the above-described construction control method for pressure grouting piles.

[0040] This application discloses a construction control method for pressure-grouted piles. During the process of pouring concrete into the target borehole, this method determines the actual concrete pouring volume and the current pile length, and queries the target pouring volume corresponding to the current pile length from the concrete pouring curve. This application compares the actual concrete pouring volume with the target pouring volume to determine the pouring volume error, and adjusts the lifting speed of the drill rod based on the pouring volume error to ensure that the concrete can uniformly and fully fill the borehole. Therefore, this application can automatically and reasonably adjust the lifting speed of the auger drill rod, improving the construction quality of pressure-grouted piles. This application also provides a construction control system for pressure-grouted piles, a storage medium, and an electronic device, all with the above-mentioned beneficial effects, which will not be elaborated further here. Attached Figure Description

[0041] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 A flowchart illustrating a construction control method for pressure grouting piles provided in an embodiment of this application;

[0043] Figure 2 This is a schematic diagram of the structure of an intelligent operation system for pressure grouting piles provided in an embodiment of this application. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] Please see below. Figure 1 , Figure 1 This is a flowchart illustrating a construction control method for pressure-grown piles provided in an embodiment of this application.

[0046] Specific steps may include:

[0047] S101: Concrete is injected into the target borehole through a delivery pipeline, and the auger drill rod is controlled to be lifted to form a pressure-grouted pile.

[0048] This embodiment can be applied to pressure grouting pile construction equipment, which mainly includes a long spiral drilling rig and a concrete conveying device to achieve construction control of pressure grouting piles.

[0049] Prior to this step, a auger drill rod can be used to drill to form the target borehole. After drilling is completed, concrete can be poured into the target borehole through a delivery pipeline. During the pouring process, the auger drill rod is raised to ensure that the concrete fully fills the borehole. Specifically, the concrete can be sprayed out from the bottom of the drill rod.

[0050] As the drill rod is gradually raised, concrete continuously fills the target borehole, eventually forming a pressure-grouted pile. This step can be performed continuously, and the raising speed of the auger drill rod can be adjusted through steps S102-S104 during the execution of S101.

[0051] S102: Determine the actual concrete injection volume in the target borehole and the current pile length of the pressure-grouted pile.

[0052] In the execution of S101, this embodiment can continuously record the amount of concrete poured into the target borehole, i.e., the actual amount of concrete poured into the target borehole. This embodiment can also record the distance from the top of the grouted pile to the bottom of the hole, i.e., the current length of the grouted pile.

[0053] The actual concrete pouring volume and current pile length can both be detected by corresponding sensors, such as flow meters, pressure sensors, and distance sensors.

[0054] S103: Query the target pouring volume corresponding to the current pile length from the concrete pouring curve.

[0055] Prior to this step, this embodiment can pre-generate a concrete pouring curve, which describes the correspondence between the theoretical concrete pouring volume and the pile length. Specifically, the concrete pouring curve is determined based on the design parameters of the pressure-grouted pile, which may include the target pile length, diameter, filling coefficient, etc. Based on the current pile length, this step can query the target pouring volume corresponding to the current pile length from the concrete pouring curve.

[0056] S104: Calculate the injection volume error based on the actual concrete injection volume and the target injection volume, and adjust the lifting speed of the auger rod based on the injection volume error.

[0057] In this process, after obtaining the actual concrete pouring volume and the target pouring volume, the two can be subtracted to obtain the pouring volume error. Then, the lifting speed of the auger drill rod can be adjusted based on the pouring volume error to ensure that the concrete can fill the target borehole evenly and fully.

[0058] Specifically, if the actual concrete volume poured is greater than the target volume, it indicates that too much concrete has been poured. This solution can be used to increase the lifting speed of the auger rod to reduce concrete accumulation in the borehole and ensure that the concrete fills the borehole evenly. If the actual volume poured is less than the target volume, it indicates that the concrete has been insufficient. This solution can be used to slow down the lifting speed of the auger rod to ensure that the concrete fully fills the borehole.

[0059] In this embodiment, during the concrete pouring process into the target borehole, the actual concrete pouring volume and the current pile length of the pressure-grouted pile are determined. The target pouring volume corresponding to the current pile length is then retrieved from the concrete pouring curve. This embodiment compares the actual concrete pouring volume with the target pouring volume to determine the pouring volume error. Based on this error, the lifting speed of the drill rod is adjusted to ensure that the concrete fills the borehole evenly and fully. Therefore, this embodiment can automatically and reasonably adjust the lifting speed of the auger drill rod, improving the construction quality of the pressure-grouted pile.

[0060] As for Figure 1 In a further description of the corresponding embodiment, this embodiment uses a concrete flow meter to determine the actual concrete pouring volume. The specific process is as follows:

[0061] Before determining the actual concrete injection volume in the target borehole and the current pile length of the pressure-grouted pile, a concrete flow meter is used to detect the injection flow rate and determine the injection time; the actual concrete injection volume is then calculated based on the injection flow rate and the injection time. Specifically, the concrete flow meter can be installed at any location within the conveying pipeline; as a feasible implementation, the concrete flow meter can be installed at a bend in the conveying pipeline.

[0062] As for Figure 1 In a further description of the corresponding embodiment, this embodiment uses a pressure sensor to determine the actual concrete pouring volume. The specific process is as follows:

[0063] Before determining the actual concrete injection volume in the target borehole and the current pile length of the pressure-grouted pile, the concrete pressure is detected using a pressure sensor, and the drill rod parameters and concrete density are determined; the actual concrete injection volume is calculated based on the concrete pressure, the drill rod parameters, and the concrete density.

[0064] The aforementioned concrete pressure describes the pressure exerted by the concrete on the pipe wall of the conveying pipeline. In this embodiment, the instantaneous volumetric flow rate of the concrete in the conveying pipeline can be calculated based on the concrete pressure, drill rod parameters, and concrete density. The actual concrete injection volume is obtained by integrating the instantaneous volumetric flow rate over time.

[0065] The conveying pipeline is provided with a pressure measuring hole, and the pressure sensor is fixed to the pressure measuring hole by a threaded connection.

[0066] As a feasible implementation, the aforementioned conveying pipeline is provided with multiple pressure measuring holes, each of which is equipped with a corresponding pressure sensor. The distances between the various pressure sensors and the output ports of the conveying pipeline can be different. Accordingly, the process of detecting concrete pressure using pressure sensors includes: determining the measured value and installation position of each pressure sensor; determining the weight value of each pressure sensor based on the installation position; and performing a weighted calculation based on the measured value and the weight value to obtain the concrete pressure.

[0067] Concrete flow in a pipeline encounters resistance, causing the pressure to gradually decrease along the conveying direction. During concrete conveying, the pressure measured by a pressure sensor closer to the pipeline's outlet port more accurately reflects the actual pressure of the concrete at the outlet. Therefore, sensor readings closer to the outlet port are closer to the actual concrete pressure and should be assigned a higher weight. That is, this weight is negatively correlated with the outlet distance, which is the distance between the pressure sensor and the outlet port of the conveying pipeline.

[0068] As for Figure 1 In a further description of the corresponding embodiment, based on the simultaneous presence of a concrete flow meter and a pressure sensor, this embodiment provides a method for calculating the actual concrete pouring volume:

[0069] The concrete flow meter is used to detect the grouting flow rate and determine the grouting time; the actual grouting volume of the first candidate concrete is calculated based on the grouting flow rate and the grouting time; the concrete pressure is detected using a pressure sensor, and the drill rod parameters and concrete density are determined; the actual grouting volume of the second candidate concrete is calculated based on the concrete pressure, the drill rod parameters, and the concrete density.

[0070] A first weighting value is set based on the fluctuation range of the flow rate detected by the concrete flow meter in the most recent cycle, and this first weighting value is negatively correlated with the fluctuation range. A second weighting value is set based on the fluctuation range of the pressure value detected by the pressure sensor in the most recent cycle, and this second weighting value is also negatively correlated with the fluctuation range. The actual concrete pouring volume of the first and second candidate concretes is calculated by weighting the first and second weighting values ​​to obtain the actual concrete pouring volume. This method can avoid the interference of single sensor detection error on the calculation result of the actual concrete pouring volume, thus improving the reliability of this scheme.

[0071] As for Figure 1Further description of the corresponding embodiment: During the construction of pressure-grouted piles, void conditions may be encountered, leading to a decline in construction quality. The aforementioned void condition refers to a situation where, due to geological conditions, the bottom of the pressure-grouted pile suddenly collapses, causing the drill bit to detach from the concrete surface. To address this situation, this embodiment can detect and handle void conditions in the following ways:

[0072] A pressure sensor is used to detect the concrete pressure; it is then determined whether the concrete pressure is less than a pressure threshold for n consecutive strokes; if so, an alarm message indicating a void condition is detected is output, and the lifting speed of the auger drill rod is reduced. The concrete pressure describes the pressure exerted by the concrete on the wall of the delivery pipeline; the stroke refers to the displacement distance of the piston in the concrete cylinder of the concrete pump truck in one reciprocating motion under hydraulic drive.

[0073] Furthermore, after detecting a cavity, the upward speed of the auger drill pipe can be reduced by: determining pressure deviation information; determining the speed reduction range based on the pressure deviation information; and reducing the upward speed of the auger drill pipe based on the speed reduction range.

[0074] The pressure deviation information includes the difference between the average concrete pressure of each stroke under the void condition and the pressure threshold. Specifically, in this embodiment, the deceleration range can be determined based on the pressure deviation information of the most recent n strokes, such as calculating the average pressure deviation information of the most recent n strokes and determining the deceleration range based on the average pressure deviation information of the most recent n strokes. The deceleration range is positively correlated with the average pressure deviation information.

[0075] The above methods can improve the automation level and construction quality of pressure grouting pile construction, and reduce construction problems caused by changes in geological conditions.

[0076] Furthermore, after detecting a void, the current lifting speed of the auger rod can be recorded as a historical speed before reducing the lifting speed. Correspondingly, after reducing the lifting speed of the auger rod, it can be determined whether the current concrete pressure is greater than or equal to the pressure threshold; if so, the lifting speed of the auger rod is restored to the historical speed; if not, the lifting speed of the auger rod is maintained.

[0077] If the current concrete pressure is greater than or equal to the pressure threshold, it means that the concrete pouring situation has returned to normal and the void condition has been resolved. Therefore, the lifting speed of the auger rod can be restored to the previously recorded historical speed to ensure the construction progress.

[0078] The process described in the above embodiments is illustrated below through examples in practical applications.

[0079] In the construction of pressure-grouted piles, the matching accuracy between the drill rod lifting speed and the concrete pouring volume directly affects the quality of the pile. However, the relevant technologies lack dynamic closed-loop control of the lifting speed, which has the following problems: (1) Relying on manual experience or simple logic to control the lifting speed, it is impossible to accurately match the changes in concrete flow rate and pressure in real time, which can easily lead to deviations between the actual pouring volume and the theoretical value, causing quality problems such as necking, pile breakage, insufficient or excessive filling coefficient; (2) The traditional open-loop control method has poor adaptability to dynamic factors such as pipeline resistance and concrete slump, and the construction accuracy is significantly affected by the environment; (3) There is a lack of automated feedback adjustment mechanism, which requires frequent manual intervention, resulting in low efficiency and large human error.

[0080] To address the technical problems existing in the aforementioned related technologies, this embodiment provides a new intelligent operation scheme for pressure grouting piles. This scheme collects grouting parameters in real time through a concrete flow meter and a pressure sensor, and uses a PID control algorithm to dynamically adjust the drill rod lifting speed, thereby achieving a precise match between the actual grouting volume and the theoretical grouting volume of the pile body, and improving construction quality and efficiency.

[0081] The intelligent operation system for pressure grouting piles based on real-time flow and pressure monitoring and intelligent control provided in this embodiment includes a sensor module, a data processing module, a PID (Proportional Integral Derivative) control and communication module.

[0082] The sensor module includes: a concrete flow meter, a concrete pressure sensor, an inclination sensor, a depth encoder, a speed sensor, and a power head pressure sensor.

[0083] The concrete flow meter is installed at the bend of the concrete conveying pipeline to monitor the concrete pouring flow rate Q (unit: (cubic meters per minute). Concrete flow meters can be electromagnetic flow meters, which have high precision and wear resistance. Concrete flow meters can also be ultrasonic flow meters.

[0084] Concrete pressure sensor: A pressure measuring hole fixed to the pipeline via a threaded connection. This pressure measuring hole is located between the flow meter and the concrete hose and is used to detect the pressure P (unit: Pa) of concrete on the pipe wall during the pouring process. Besides being installed at elbows, the concrete flow meter and concrete pressure sensor can also be installed on the platform of a rotary drilling rig or at the outlet of a concrete pump truck. The winch mechanism used in this embodiment can be an electric main winch or a hydraulically controlled main winch, which automatically raises the drill rod by outputting a current value or hydraulic oil. The aforementioned concrete pressure sensor can be a piezoresistive pressure sensor or a strain gauge pressure sensor. The sensor module is connected to the data processing module and PID control module via a communication module (wired / wireless) to form a hardware link for parameter acquisition, processing, and control.

[0085] An inclination sensor is mounted on the back of the drill mast to measure its angle, ensuring the verticality of the concrete pile. A depth encoder is mounted on the shaft of the electric main winch drum to measure the drilling depth. A speed sensor is mounted at the speed sensor port of the power head motor to measure the rotational speed of the power head. A power head pressure sensor is mounted at the interface of the power head motor to measure the rotational pressure of the power head.

[0086] Receive the flow rate Q and pressure P collected by the sensor, and combine them with drill pipe parameters (such as diameter D) and concrete density. Calculate the actual concrete pouring volume. The formula can be: t represents time. This embodiment can generate a description of the theoretical grouting volume based on pile design parameters (pile length, diameter, filling coefficient). A curve relating the current pile length to the actual concrete pouring volume. In this embodiment, the pouring volume error can be calculated based on the actual concrete pouring volume and the target pouring volume. , Injection volume error It can be used as an input signal for PID control.

[0087] The PID control module includes a proportional control unit, an integral control unit, and a derivative control unit, based on the injection volume error. Real-time calculation of drill pipe lifting speed adjustment :

[0088] ;

[0089] Kp represents the proportional coefficient, Ki represents the integral coefficient, and Kd represents the derivative coefficient. These parameters can be optimized through on-site debugging. dt represents the change over time. This indicates the amount of change in the injection volume error.

[0090] The target lifting speed that the output auger needs to achieve is u = u0 + (u0 is the initial speed), control data is sent to the motor controller via the CAN (Controller Area Network) bus. After receiving the motor speed command sent by the PID control module, the motor controller drives the hoist motor to lift at the commanded speed. This embodiment can be based on... Dynamically generate PWM (Pulse Width Modulation) signals for the main hoist's automatic lifting solenoid valve to adjust the lifting speed.

[0091] This embodiment realizes the entire process of data acquisition, deviation calculation, PID adjustment, and feedback verification. It can also realize high-frequency dynamic adjustment (such as updating parameters every 50ms) and abnormal working condition handling mechanism (such as pressure over-limit alarm and speed threshold limit).

[0092] The communication module uses both wired and wireless methods to achieve real-time transmission of sensor data, control commands, and construction status, and supports remote monitoring and parameter configuration.

[0093] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of an intelligent operation system for pressure grouting piles provided in an embodiment of this application. The diagram shows a data processing module, a concrete flow meter, a depth encoder, a PID control and communication module, a speed sensor, an inclination sensor, a concrete pressure sensor, a power head pressure sensor, a motor controller, and a winch motor.

[0094] During the automatic lifting process, if a void is encountered, the concrete pressure sensor will detect that the pipeline pressure is lower than the stroke pressure for two consecutive strokes, triggering a void alarm to alert the operator. The main hoisting speed will be automatically reduced until the detected pressure is greater than or equal to the stroke pressure, at which point the normal automatic hoisting speed will be restored.

[0095] The multi-parameter fusion monitoring operation provided in this embodiment constructs a "flow-pressure" dual-parameter monitoring network through the coordinated deployment of a concrete flow meter (real-time monitoring of the pouring flow rate Q) and a pressure sensor (real-time monitoring of the pipe pressure P), comprehensively reflecting the concrete pouring status (flowability, fullness, pipe resistance, etc.). This embodiment achieves an upgrade from "single-point status monitoring" to "real-time quantification of dynamic process parameters," providing multi-dimensional data support for precise control.

[0096] The engineering application of the PID closed-loop control algorithm provided in this embodiment is based on the deviation between the theoretical injection volume and the actual injection volume. It dynamically adjusts the drill pipe lifting speed through three links: proportional, integral, and derivative, forming a high-frequency closed loop of "monitoring-calculation-adjustment-execution", so that the adjustment period is ≤50ms.

[0097] The fully automated control architecture provided in this embodiment integrates sensor modules, data processing modules, PID control modules, and communication modules. It can complete the entire process from data acquisition to speed adjustment without human intervention, solving the problem of insufficient accuracy caused by "reliance on human experience" in traditional construction.

[0098] This embodiment utilizes the collaborative monitoring of a concrete flow meter and pressure sensor to acquire dynamic parameters of the pouring process in real time. Combined with a PID algorithm, it achieves closed-loop control of the lifting speed, ensuring that the pouring volume error is within 5%, thus avoiding quality problems caused by improper lifting speed and enabling precise control of the pouring volume. This embodiment can automatically compensate for the effects of changes in concrete slump and fluctuations in pipeline resistance, maintaining stable control even under complex working conditions, improving construction reliability, and demonstrating strong adaptability. This embodiment requires no manual intervention; the system automatically completes the entire process of data acquisition, calculation, and adjustment, reducing labor costs and increasing construction efficiency by more than 30%, demonstrating a high degree of automation. This embodiment stores data such as flow rate, pressure, and speed throughout the entire construction process through a communication module, facilitating subsequent quality inspection and construction process optimization, ensuring quality traceability.

[0099] The construction control system for pressure grouting piles provided in this application includes:

[0100] The control module is used to inject concrete into the target borehole through the delivery pipeline and control the lifting of the auger drill rod to form a pressure-grouted pile;

[0101] The detection module is used to determine the actual amount of concrete poured into the target borehole and the current pile length of the pressure-grouted pile;

[0102] The query module is used to query the target injection volume corresponding to the current pile length from the concrete injection curve; wherein, the concrete injection curve is determined according to the design parameters of the pressure-grown pile, and the concrete injection curve is used to describe the correspondence between the theoretical concrete injection volume and the pile length;

[0103] The adjustment module is used to calculate the injection volume error based on the actual concrete injection volume and the target injection volume, and adjust the lifting speed of the auger rod based on the injection volume error.

[0104] In this embodiment, during the concrete pouring process into the target borehole, the actual concrete pouring volume and the current pile length of the pressure-grouted pile are determined. The target pouring volume corresponding to the current pile length is then retrieved from the concrete pouring curve. This embodiment compares the actual concrete pouring volume with the target pouring volume to determine the pouring volume error. Based on this error, the lifting speed of the drill rod is adjusted to ensure that the concrete fills the borehole evenly and fully. Therefore, this embodiment can automatically and reasonably adjust the lifting speed of the auger drill rod, improving the construction quality of the pressure-grouted pile.

[0105] Furthermore, it also includes:

[0106] The first actual injection volume calculation module is used to detect the injection flow rate and determine the injection time using a concrete flow meter before determining the actual injection volume of concrete in the target borehole and the current pile length of the pressure-grouted pile; wherein the concrete flow meter is installed at the bend of the delivery pipeline; it is also used to calculate the actual injection volume of concrete based on the injection flow rate and the injection time.

[0107] Furthermore, it also includes:

[0108] The second actual injection volume calculation module, before determining the actual concrete injection volume in the target borehole and the current pile length of the pressure-grouted pile, uses a pressure sensor to detect the concrete pressure and determines the drill rod parameters and concrete density; wherein, the delivery pipeline is provided with a pressure measuring hole, and the pressure sensor is fixed to the pressure measuring hole by a threaded connection, the concrete pressure is used to describe the pressure exerted by the concrete on the pipe wall of the delivery pipeline; it is also used to calculate the actual concrete injection volume based on the concrete pressure, the drill rod parameters, and the concrete density.

[0109] Furthermore, the conveying pipeline is provided with a plurality of pressure measuring holes, and a corresponding pressure sensor is installed in each pressure measuring hole;

[0110] Accordingly, the process of the second actual injection volume calculation module using pressure sensors to detect concrete pressure includes: determining the measured value and installation position of each pressure sensor; determining the weight value of each pressure sensor based on the installation position; wherein the weight value is negatively correlated with the outlet distance, the outlet distance being the distance between the pressure sensor and the output port of the delivery pipeline; and performing a weighted calculation based on the measured value and the weight value to obtain the concrete pressure.

[0111] Furthermore, it also includes:

[0112] The void condition detection module is used to detect concrete pressure using a pressure sensor; wherein, the concrete pressure is used to describe the pressure exerted by the concrete on the pipe wall of the conveying pipeline; it is also used to determine whether the concrete pressure is less than a pressure threshold for n consecutive strokes; if so, an alarm message indicating a void condition has been detected is output, and the upward speed of the auger drill rod is reduced.

[0113] Furthermore, the process of the cavity condition detection module reducing the lifting speed of the auger drill rod includes: determining pressure deviation information; wherein, the pressure deviation information includes the difference between the average concrete pressure of each stroke under the cavity condition and the pressure threshold; determining the speed reduction range based on the pressure deviation information; and reducing the lifting speed of the auger drill rod based on the speed reduction range.

[0114] Furthermore, it also includes:

[0115] A speed recording module is used to record the current lifting speed as a historical speed before reducing the lifting speed of the auger rod;

[0116] Correspondingly, it also includes:

[0117] The speed recovery module is used to determine whether the current concrete pressure is greater than or equal to the pressure threshold after reducing the lifting speed of the auger rod; if so, the lifting speed of the auger rod is restored to the historical speed.

[0118] Since the embodiments of the system part correspond to the embodiments of the method part, please refer to the description of the embodiments of the method part for the embodiments of the system part, and they will not be repeated here.

[0119] This application also provides a storage medium on which a computer program is stored, which, when executed, can perform the steps provided in the above embodiments. The storage medium may include various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0120] This application also provides an electronic device that may include a memory and a processor. The memory stores a computer program, and when the processor calls the computer program in the memory, it can implement the steps provided in the above embodiments. Of course, the electronic device may also include various network interfaces, power supplies, and other components.

[0121] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple; relevant parts can be referred to the method section. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

[0122] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A construction control method for pressure-grouted piles, characterized in that, include: Concrete is poured into the target borehole through a delivery pipeline, and the auger drill rod is controlled to be lifted to form a pressure-grouted pile; Determine the actual concrete injection volume in the target borehole and the current pile length of the pressure-grouted pile; The target injection volume corresponding to the current pile length is retrieved from the concrete injection curve; wherein, the concrete injection curve is determined according to the design parameters of the pressure-grown pile, and the concrete injection curve is used to describe the correspondence between the theoretical concrete injection volume and the pile length; The injection volume error is calculated based on the actual injection volume of concrete and the target injection volume, and the lifting speed of the auger rod is adjusted based on the injection volume error. The calculation process for the actual concrete pouring volume includes: The concrete flow meter was used to detect the pouring flow rate and determine the pouring time. The actual amount of concrete to be poured for the first candidate concrete is calculated based on the pouring flow rate and the pouring duration. The pressure sensor is used to detect the concrete pressure and determine the drill rod parameters and concrete density; The actual pouring volume of the second alternative concrete is calculated based on the concrete pressure, the drill rod parameters, and the concrete density. A first weight value is set based on the fluctuation range of the flow rate measured by the concrete flow meter in the most recent cycle. The first weight value is negatively correlated with the fluctuation range. A second weight value is set based on the fluctuation range of the pressure value detected by the pressure sensor in the most recent cycle. The second weight value is negatively correlated with the fluctuation range. The actual concrete pouring volume is obtained by weighting the actual pouring volume of the first candidate concrete and the actual pouring volume of the second candidate concrete based on the first weight value and the second weight value.

2. The construction control method for pressure-grown piles according to claim 1, characterized in that, Before determining the actual concrete injection volume in the target borehole and the current pile length of the pressure-grouted pile, the following steps are also included: A concrete flow meter is used to detect the grouting flow rate and determine the grouting time; wherein the concrete flow meter is installed at the bend of the delivery pipeline; The actual concrete volume is calculated based on the injection flow rate and the injection duration.

3. The construction control method for pressure-grouted piles according to claim 1, characterized in that, Before determining the actual concrete injection volume in the target borehole and the current pile length of the pressure-grouted pile, the following steps are also included: A pressure sensor is used to detect concrete pressure and determine drill rod parameters and concrete density; wherein, the delivery pipeline is provided with a pressure measuring hole, and the pressure sensor is fixed to the pressure measuring hole by a threaded connection; the concrete pressure is used to describe the pressure exerted by the concrete on the pipe wall of the delivery pipeline. The actual concrete injection volume is calculated based on the concrete pressure, the drill rod parameters, and the concrete density.

4. The construction control method for pressure-grouted piles according to claim 3, characterized in that, The conveying pipeline is provided with a plurality of pressure measuring holes, and a corresponding pressure sensor is installed in each pressure measuring hole; Accordingly, pressure sensors are used to detect concrete pressure, including: Determine the measured value and installation location of each pressure sensor; The weight value of each pressure sensor is determined based on the installation location; wherein the weight value is negatively correlated with the outlet distance, which is the distance between the pressure sensor and the output port of the delivery pipeline; The concrete pressure is obtained by weighted calculation based on the measured value and the weight value.

5. The construction control method for pressure-grouted piles according to claim 1, characterized in that, Also includes: A pressure sensor is used to detect concrete pressure; wherein the concrete pressure is used to describe the pressure exerted by the concrete on the wall of the delivery pipeline. Determine whether the concrete pressure is less than the pressure threshold for n consecutive strokes; If so, an alarm message indicating a cavity condition has been detected will be output, and the lifting speed of the auger rod will be reduced.

6. The construction control method for pressure-grouted piles according to claim 5, characterized in that, Reducing the upward speed of the auger drill pipe includes: Determine pressure deviation information; wherein, the pressure deviation information includes the difference between the average concrete pressure of each stroke under the void condition and the pressure threshold. The speed reduction range is determined based on the pressure deviation information, and the upward speed of the auger drill pipe is reduced based on the speed reduction range.

7. The construction control method for pressure-grown piles according to claim 5, characterized in that, Before reducing the upward speed of the auger rod, the following is also included: Record the current lifting speed as a historical speed; Accordingly, after reducing the upward speed of the auger drill pipe, the method further includes: Determine whether the current concrete pressure is greater than or equal to the pressure threshold. If so, the lifting speed of the auger rod will be restored to the historical speed.

8. A construction control system for pressure-grouted piles, characterized in that, include: The control module is used to inject concrete into the target borehole through the delivery pipeline and control the lifting of the auger drill rod to form a pressure-grouted pile; The detection module is used to determine the actual amount of concrete poured into the target borehole and the current pile length of the pressure-grouted pile; The query module is used to query the target injection volume corresponding to the current pile length from the concrete injection curve; wherein, the concrete injection curve is determined according to the design parameters of the pressure-grown pile, and the concrete injection curve is used to describe the correspondence between the theoretical concrete injection volume and the pile length; An adjustment module is used to calculate the injection volume error based on the actual concrete injection volume and the target injection volume, and to adjust the lifting speed of the auger rod based on the injection volume error; The process by which the detection module determines the actual amount of concrete poured into the target borehole includes: The concrete flow meter was used to detect the pouring flow rate and determine the pouring time. The actual amount of concrete to be poured for the first candidate concrete is calculated based on the pouring flow rate and the pouring duration. The pressure sensor is used to detect the concrete pressure and determine the drill rod parameters and concrete density; The actual pouring volume of the second alternative concrete is calculated based on the concrete pressure, the drill rod parameters, and the concrete density. A first weight value is set based on the fluctuation range of the flow rate measured by the concrete flow meter in the most recent cycle. The first weight value is negatively correlated with the fluctuation range. A second weight value is set based on the fluctuation range of the pressure value detected by the pressure sensor in the most recent cycle. The second weight value is negatively correlated with the fluctuation range. The actual concrete pouring volume is obtained by weighting the actual pouring volume of the first candidate concrete and the actual pouring volume of the second candidate concrete based on the first weight value and the second weight value.

9. An electronic device, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program, and the processor, when calling the computer program in the memory, implements the steps of the construction control method for pressure grouting piles as described in any one of claims 1 to 7.

10. A storage medium, characterized in that, The storage medium stores computer-executable instructions, which, when loaded and executed by a processor, implement the steps of the construction control method for pressure grouting piles as described in any one of claims 1 to 7.

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