A monitoring system and method for a bored pile grouting machine

Abstract

The present invention discloses a monitoring method for a bored cast-in-place pile machine. The key points of the technical solution include: obtaining the total current information of the construction site pile machine and confirming the type of the pile machine; the monitoring platform generates current curve information based on the total current information of the pile machine, and determines the monitoring characteristic information according to the type of the pile machine; obtaining the status information based on the monitoring characteristic information and the current curve information, where the status information represents the working process information of the pile machine and the working status information of each working process. This pile machine monitoring method can collect the total power consumption current of the bored cast-in-place pile machine equipment to analyze the working status of the pile machine equipment, and then monitor the construction quality of the foundation engineering part through the analysis of the status.

Description

Technical Field

[0001] The present invention relates to a pile driver monitoring system, and more particularly to a pile hole cast-in-place pile driver monitoring system and method. Background Art

[0002] As we all know, pile drivers are commonly used equipment on construction sites. Cast-in-place piles refer to a method of directly drilling a hole at the designed pile position with a circular cross-section, placing a steel cage in the hole, and pouring concrete to form a pile. Cast-in-place piles have the advantages of no vibration, no soil squeezing, low noise, and suitability for use in densely built urban areas during construction. They are widely used in the construction process. According to different hole-making processes, cast-in-place piles can be divided into cast-in-place piles with dry drilling, cast-in-place piles with mud wall protection, and cast-in-place piles with manual excavation.

[0003] Although the current real estate sales market in China is relatively bleak, the construction of real estate projects is still in full swing. The sluggish real estate market has prompted investment companies to put forward stringent control requirements on the construction costs and construction periods of real estate projects. As a result, most projects are awarded to construction units with the lowest bids and shortest planned construction times. It is not surprising that they cut corners and shorten the process of construction, which ultimately creates a huge quality risk for the overall construction project.

[0004] Therefore, it is necessary to develop a set of corresponding equipment and systems for construction monitoring, so as to solve the above problems, reduce construction costs and ensure construction quality. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a pile hole cast-in-place pile driver monitoring method, which can collect the total power consumption current of the bored pile driver equipment to analyze the working status of the pile driver equipment, and then monitor the construction quality of the foundation part of the project through status analysis.

[0006] To achieve the above object, the present invention provides the following technical solution: a pile hole grouting pile driver monitoring method, comprising:

[0007] Obtain the total current information of the pile driver on the construction site and confirm the type of pile driver;

[0008] The monitoring platform generates current curve information based on the total current information of the pile driver, and determines monitoring characteristic information based on the type of pile driver;

[0009] The state information is obtained according to the monitoring characteristic information and the current curve information. The state information is the work flow information representing the pile driver and the work state information of each work flow.

[0010] A monitoring system for a bored pile grouting machine, comprising a current acquisition module and a monitoring platform, where the current acquisition module is communicatively connected to the monitoring platform;

[0011] The current acquisition module is used to acquire the total current information of the pile machine;

[0012] The monitoring platform includes a receiving module, an analysis module and a display module. The receiving module is used to receive the total current information and generate a current curve graph;

[0013] Several state monitoring models are set in the analysis module. The state detection model is used to output the pile machine state information according to the current curve graph. The pile machine state information characterizes the working state and working duration of the pile machine;

[0014] The display module is used to display the current curve graph and the working state indication graph.

[0015] In summary, the present invention has the following beneficial effects: First, the current collector is installed at the position of the electrical box of the pile machine to collect the total current used by the pile machine equipment during the working process. Then, the collected current information is uploaded to the designated monitoring platform through wireless communication equipment. The monitoring platform analyzes the working state of the pile machine equipment according to the current information, and then monitors the construction quality of the foundation engineering part through the analysis of the state.

[0016] According to the current data characteristics generated by different pile machines during the working process, the working state is identified. Among them, the rated power of the equipment on the same type of pile machine has some deviations, but the overall deviation range is not large. The main equipment of the pile machine is the main engine (rotary power output, driving the drill pipe and the winch), the large pump (the main water pump for the positive circulation of mud during drilling), the small pump (draining the mud on the working hole), and the welding machine (electric welding connection between the steel cage joints). The corresponding rated powers are 45kw, 38kw, 11kw, and 20kw respectively. According to the 7 construction processes of the bored pile grouting machine, and considering that the change discrimination of the current during the two construction processes of removing the drill pipe and lowering the guide pipe is not high and the change trend is not obvious, the bored pile grouting machine equipment is now divided into 5 working states, namely drilling, primary cleaning, placing the steel cage, secondary cleaning, and pouring concrete. Since different equipment operates in different working states, the working current generated will also change. Therefore, by monitoring the current in different working states, the function of real-time monitoring of the working process and the working state information of each working process can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the principle block diagram of the monitoring system for the bored pile grouting machine;

[0018] Figure 2 It is the flow schematic diagram of the monitoring method for the bored pile grouting machine;

[0019] Figure 3 It is a schematic diagram of the working process of a bored cast-in-place pile machine;

[0020] Figure 4 It is a current curve diagram of two working states of the bored cast-in-place pile machine;

[0021] Figure 5 It is a current curve diagram of drilling;

[0022] Figure 6 It is a current curve diagram of the first cleaning;

[0023] Figure 7 It is a current curve diagram of placing the steel reinforcement cage;

[0024] Figure 8 It is a current curve diagram of the second cleaning;

[0025] Figure 9 It is a current curve diagram of pouring concrete.

[0026] Reference numerals: 1. Current acquisition module; 2. Monitoring platform; 21. Receiving module; 22. Analysis module; 23. Display module; 24. Input module. Specific implementation manners

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0028] Referring to Figures 1 to 9 As shown, to achieve the above object, the present invention provides the following technical solution: A monitoring method for a bored cast-in-place pile machine, including:

[0029] Obtaining the total current information of the construction site pile machine and confirming the type of the pile machine;

[0030] The monitoring platform 2 generates current curve information according to the total current information of the pile machine, and determines the monitoring characteristic information according to the type of the pile machine;

[0031] Obtaining the state information according to the monitoring characteristic information and the current curve information, where the state information is the working process information of the pile machine and the working state information of each working process.

[0032] In the design of the present invention, the current collector is first installed at the position of the electric box of the pile driver to collect the total current used by the pile driver equipment during operation. Then, the collected current information is uploaded to the designated monitoring platform 2 through wireless communication equipment. The monitoring platform 2 analyzes the working state of the pile driver equipment based on the current information, and then monitors the construction quality of the foundation engineering part through the analysis of the state.

[0033] According to the characteristics of the current data generated by different pile drivers during operation, the working state is identified. Among them, there are deviations in the rated power of the equipment on the same type of pile driver, but the overall deviation range is not large. The main equipment of the pile driver is mainly the main engine (rotary power output, driving the drill pipe and winch), large pump (main water pump for positive circulation of mud during drilling), small pump (discharging the mud on the working hole), and welding machine (electric welding connection between the reinforcement cage joints). The corresponding rated powers are 45kw, 38kw, 11kw, and 20kw respectively. According to the 7 construction processes of the bored pile machine, considering that the change discrimination of the current during the two construction processes of removing the drill pipe and lowering the conduit is not high and the change trend is not obvious, the bored pile machine equipment is now divided into 5 working states, namely drilling, first cleaning, placing the reinforcement cage, second cleaning, and pouring concrete. Since different equipment is operated in different working states, the working current generated will also change. Therefore, by monitoring the current in different working states, the real-time monitoring of the working process and the working state information of each working process can be achieved.

[0034] During the drilling stage, the main engine, large pump, and small pump are running;

[0035] During the stage of adding drill pipes, the main engine and small pump are running;

[0036] During the first hole cleaning stage, the main engine, large pump, and small pump are running;

[0037] During the stage of removing drill pipes, the main engine is running;

[0038] During the stage of lifting and placing the steel, the main engine is running;

[0039] During the welding stage, the welding machine is running;

[0040] During the stage of lowering the conduit, the main engine is running;

[0041] During the second hole cleaning stage, the large pump and small pump are running;

[0042] During the pouring stage, the main engine is running;

[0043] During the stage of pulling out the conduit, the main engine is running.

[0044] Among them, during the drilling stage, there is an operation step of adding drill pipes. The length of each drill pipe on the construction site is generally 3 meters. During the construction process, the construction personnel need to add a specified number of drill pipes according to the depth required by the design drawings. The steel reinforcement cages in the stage of placing steel reinforcement cages are generally 9 meters per piece. At the same time, taking the bored pile drilling rig as an example, the mud circulation of the bored pile drilling rig equipment adopts positive circulation.

[0045] As Figure 4 shown, it can be very clearly found that there is a high similarity between the current curves of the two piles. At the same time, considering that the rated power of the electrical equipment on each pile driver is not exactly the same, and there are also certain deviations in the sampling of each current sensor, the current described below mainly refers to the changing characteristics of the current curve trend, and the specific current value only represents a certain range.

[0046] The monitored characteristic information includes the current information of each working process, and the current information of each working process is the total rated current of the operating equipment in the corresponding working process.

[0047] The working processes include drilling, primary cleaning, placing steel reinforcement cages, secondary cleaning, and pouring concrete.

[0048] The judgment method for the drilling process includes:

[0049] Obtain a number of current square waves according to the drilling current value. The number of periods of the current square wave represents the number of drill pipe joints, and the product of the number of periods of the current square wave and the length of a single drill pipe represents the drilling depth of the hole;

[0050] The upper half wave of the current square wave represents the drilling operation, and the lower half wave of the current square wave represents the operation of adding drill pipes.

[0051] As Figure 5 shown, it is a schematic diagram of the current during the drilling process. According to this drilling schematic diagram, the following conclusions can be drawn:

[0052] 1. During the drilling process, the amplitude of the current is very distinct from that during the process of adding drill pipes;

[0053] 2. The current curve during the drilling process is approximately a current square wave. The number of periods of the square wave represents the number of drill pipe joints, and at the same time, the drilling depth of the hole can be obtained;

[0054] 3. The upper half wave of the square wave during the drilling process represents the drilling operation. Its change is not completely an approximately horizontal curve. If the pile driver encounters a hard rock layer during the construction process, the amplitude of the upper half wave current will change violently, and the duration will not be completely confirmed either, as Figure 5 shown by the rightmost half wave;

[0055] 4. The lower half-wave of the square wave during the drilling process represents the operation of adding drill pipes. Its change is approximately a horizontal curve because the main machine is in a standby state for most of the time at this time. Combining with the on-site situation, we found that the process of adding drill pipes is purely manual operation. Considering the normal operation intensity and efficiency of people, the minimum operation time for adding drill pipes will not be less than 4 minutes.

[0056] The judgment methods for the first cleaning process and the second cleaning process include:

[0057] Obtain the first cleaning current curve based on the first cleaning current value, and the length of the first cleaning current curve represents the first cleaning duration;

[0058] Obtain the second cleaning current curve based on the second cleaning current value, and the length of the second cleaning current curve represents the second cleaning duration;

[0059] Judge whether the construction site operates according to the process requirements based on the first cleaning duration and the second cleaning duration.

[0060] As Figure 6 and Figure 8 shown, the current schematic diagrams of the first cleaning and the second cleaning respectively, so that it can be analyzed and obtained:

[0061] According to the trend chart, it is found that in the first cleaning stage and the second cleaning stage, the current is basically approximately a horizontal curve, the amplitude vibration is relatively small, and the duration is long.

[0062] The judgment method for the process of placing the steel reinforcement cage includes:

[0063] Obtain the current curve for placing the steel reinforcement cage based on the current value for placing the steel reinforcement cage. The current curve for placing the steel reinforcement cage characterizes the power consumption status of the welding machine equipment and the working status of lifting the steel bars.

[0064] As Figure 7 shown, it is the current schematic diagram for placing the steel reinforcement cage, so that it can be analyzed and obtained:

[0065] During the welding process, only the welding machine equipment is using electricity. There is an approximately fixed current value during the welding operation, the current is zero when not working, and the current change frequency is high.

[0066] The judgment method for the process of pouring concrete includes:

[0067] Obtain the current curve for pouring concrete based on the current value for pouring concrete. The current curve for pouring concrete characterizes the concrete vibration working process and the process of pulling out the conduit.

[0068] As Figure 9 shown, it is the current schematic diagram for pouring concrete, so that it can be analyzed and obtained:

[0069] During the process of pouring concrete, mainly the main machine is working, and there will be a drastic change in the large current during the concrete vibration and the process of pulling out the conduit.

[0070] A monitoring system for a bored pile grouting machine, comprising a current acquisition module 1 and a monitoring platform 2, and the current acquisition module 1 is communicatively connected to the monitoring platform 2;

[0071] The current acquisition module 1 is used to acquire the total current information of the pile machine;

[0072] The monitoring platform 2 includes a receiving module 21, an analysis module 22 and a display module 23. The receiving module 21 is used to receive the total current information and generate a current curve graph;

[0073] A number of state monitoring models are set in the analysis module 22. The state detection model is used to output the pile machine state information according to the current curve graph. The pile machine state information characterizes the working state and working duration of the pile machine;

[0074] The display module 23 is used to display the current curve graph and the working state indication graph.

[0075] The monitoring platform 2 includes an input module 24. The input module 24 is connected to the analysis module 22. The input module 24 is used to input the type of the pile machine, the rated power of each component of the pile machine, and the working duration of each process of the pile machine.

[0076] Each component of the pile machine includes a main machine, a large pump, a small pump and a welding machine;

[0077] Each process of the pile machine includes drilling, primary cleaning, placing the steel reinforcement cage, secondary cleaning and pouring concrete.

[0078] The operator can remotely monitor the working state of the construction site through the monitoring platform 2, can store the current data in real time, achieve the effect of tracing back to the source, effectively prevent cutting corners during the project construction process, and reduce the phenomenon of shortening the process operation time, and ultimately ensure the quality and safety of the overall construction project.

[0079] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A monitoring method for a bored pile grouting machine, characterized in that It includes: Obtain the total current information of the construction site pile driver and confirm the pile driver type; The monitoring platform generates current curve information based on the total current information of the pile driver, and determines monitoring characteristic information according to the pile driver type; Obtain status information based on the monitoring characteristic information and the current curve information, where the status information represents the working process information of the pile driver and the working status information of each working process; The working process includes drilling, and the judgment method for the drilling process includes: Obtain a number of current square waves according to the drilling current value. The number of periods of the current square wave represents the number of sections of the drill pipe, and the product of the number of periods of the current square wave and the length of a single drill pipe represents the drilling depth of the hole; The upper half wave of the current square wave represents the drilling operation, and the lower half wave of the current square wave represents the operation of adding drill pipes.

2. The monitoring method for a bored pile grouting machine according to claim 1, characterized in that: The monitoring characteristic information includes the current information of each working process, and the current information of each working process is the total rated current of the operating equipment in the corresponding working process.

3. The monitoring method for a bored pile grouting machine according to claim 1, characterized in that: The working process includes drilling, primary cleaning, placing the steel reinforcement cage, secondary cleaning, and pouring concrete.

4. The monitoring method for a bored pile grouting machine according to claim 1, characterized in that: The working process includes primary cleaning and secondary cleaning. The judgment methods for the primary cleaning process and the secondary cleaning process include: Obtain the primary cleaning current curve according to the primary cleaning current value, and the length of the primary cleaning current curve represents the primary cleaning duration; Obtain the secondary cleaning current curve according to the secondary cleaning current value, and the length of the secondary cleaning current curve represents the secondary cleaning duration; Judge whether the construction site operates according to the technological requirements based on the primary cleaning duration and the secondary cleaning duration.

5. The monitoring method for a bored pile grouting machine according to claim 1, characterized in that: The working process includes placing the steel reinforcement cage. The judgment method for the process of placing the steel reinforcement cage includes: Obtain the current curve for placing the steel reinforcement cage according to the current value for placing the steel reinforcement cage. The current curve for placing the steel reinforcement cage characterizes the power consumption status of the welding machine equipment and the working status of lifting the steel bars.

6. The monitoring method for a bored pile grouting machine according to claim 1, characterized in that: The working process includes pouring concrete. The judgment method for the process of pouring concrete includes: Obtain the current curve for pouring concrete according to the current value for pouring concrete. The current curve for pouring concrete characterizes the concrete vibration working process and the process of pulling out the conduit.

7. A monitoring system for a bored pile grouting machine, used to execute the monitoring method for a bored pile grouting machine according to any one of claims 1-6, characterized in that: It includes a current acquisition module (1) and a monitoring platform (2), and the current acquisition module (1) is communicatively connected to the monitoring platform (2); The current acquisition module (1) is used to obtain the total current information of the pile driver; The monitoring platform (2) includes a receiving module (21), an analysis module (22), and a display module (23). The receiving module (21) is used to receive the total current information and generate a current curve graph; A number of status monitoring models are set in the analysis module (22). The status monitoring models are used to output the pile driver status information according to the current curve graph. The pile driver status information represents the working status and working duration of the pile driver; The display module (23) is used to display the current curve graph and the working status indication graph.

8. The monitoring system for a bored pile grouting machine according to claim 7, characterized in that: The monitoring platform (2) includes an input module (24). The input module (24) is connected to the analysis module (22), and the input module (24) is used to input the pile driver type, the rated power of each component of the pile driver, and the working duration of each process of the pile driver.

9. The monitoring system for a bored pile grouting machine according to claim 8, characterized in that: Each component of the pile driver includes a main engine, a large pump, a small pump, and a welding machine; Each process of the pile driver includes drilling, primary cleaning, placing the steel reinforcement cage, secondary cleaning, and pouring concrete.

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