Method and device for recording hammering number in hammering pile sinking process, medium and equipment

Abstract

The invention discloses a method, a device, a medium and equipment for recording the hammering number in the hammering pile sinking process, and belongs to the technical field of foundation engineering monitoring, the method comprises the following steps: in the hammering pile sinking process, receiving and measuring a vibration wave at each measuring point around a pile driving point position of a to-be-sunk pile to obtain a speed value and an acceleration value of the vibration wave at each measuring point, and drawing a speed time history diagram and an acceleration time history diagram of each measuring point, capturing the position of each peak point, and counting the total occurrence frequency of each peak point to obtain the hammering number and the interval time of each hammer drop in the hammering pile sinking process. According to the invention, the problems that errors are easily caused by manual recording of the hammering number, paper data recording is stagnant, and abnormal data cannot be found and processed in time are solved.

Description

Technical Field

[0001] The invention relates to a method, a device, a medium and equipment for recording the number of hammer blows in a process of hammering pile sinking, and belongs to the technical field of foundation engineering monitoring. Background Art

[0002] During the process of single pile hammering, the pile driver uses the kinetic energy generated by the drop hammer hitting the pile to hammer the pile into the soil until it reaches a predetermined depth or the bearing layer. During the entire hammering process, the hammer-type pile driving equipment has very high requirements for the flatness of the ground. If tilting occurs during the hammering process, the construction of the entire pile foundation will be at risk and the pile hammer equipment will be in danger of tipping over. Therefore, the number of hammer blows of the pile hammer is recorded, and the depth of the pile descent is observed and compared with the number of hammer blows specified in the specification to ensure whether it meets the specifications. This can not only determine whether the pile foundation can reach the bearing capacity of the pile to ensure safety, but also maintain the integrity of the pile body to avoid pile explosion.

[0003] In existing construction sites, the number of hammer blows is mostly recorded manually, relying on workers' experience to determine whether to continue sinking piles. This recording method is prone to errors, and paper data records are delayed. If abnormal data occurs, it cannot be discovered and processed in time. Summary of the invention

[0004] The purpose of the present invention is to provide a method for recording the number of hammer blows during hammer pile driving, by receiving and measuring the vibration wave at each measuring point around the piling point to be piled during the hammer pile driving process, drawing a velocity time history diagram and an acceleration time history diagram of each measuring point according to the velocity value and acceleration value of the vibration wave at each measuring point, capturing the position of each wave peak point and counting the total number of occurrences of each wave peak point, and obtaining the number of hammer blows during the hammer pile driving process and the interval time of each hammer drop, so as to solve the problems that manual recording of the number of hammer blows is prone to errors, and that paper data recording is delayed and abnormal data cannot be discovered and processed in time.

[0005] In order to solve the above technical problems, the present invention is implemented by adopting the following technical solutions.

[0006] In a first aspect, the present invention provides a method for recording the number of hammer blows during a pile driving process, comprising: During the pile driving process, the vibration waves at each measuring point around the pile driving point to be driven are received and measured, and the velocity value and acceleration value of the vibration waves at each measuring point are obtained; According to the velocity value and acceleration value of the vibration wave at each measuring point, a velocity time history diagram and an acceleration time history diagram of each measuring point are drawn; According to the velocity time history diagram and acceleration time history diagram of each measuring point, the position of each wave peak point is captured and the total number of occurrences of each wave peak point is counted to obtain the number of hammer blows in the pile driving process and the interval time of each hammer drop.

[0007] Furthermore, each of the measuring points is evenly distributed around the piling point where the piles are to be sunk, and the positions of each measuring point remain relatively dispersed.

[0008] Furthermore, the vibration wave is a vibration wave at the radial direction of the soil at each measuring point.

[0009] Furthermore, during the pile driving process, no other pile drivers are working within a range of at least 200 meters.

[0010] In a second aspect, the present invention provides a device for recording the number of hammer blows during a pile driving process, comprising: A triaxial vibration meter is set up at each measuring point around the intended pile driving point to receive and measure the vibration wave at each measuring point during the pile driving process, and obtain the velocity value and acceleration value of the vibration wave at each measuring point; A data acquisition electrical box, with a built-in data processor and a gateway, connected to the triaxial vibrometer and a DC power supply respectively, and used to upload the velocity value and acceleration value of the vibration wave at each measuring point to the cloud in real time through the gateway; The cloud is used to receive and store the velocity value and acceleration value of the vibration wave at each measuring point, perform data preprocessing, and provide a data access interface to allow remote access by terminal devices; The terminal device is used to access the cloud to obtain the velocity value and acceleration value of the vibration wave at each measuring point, and draw a velocity time history diagram and an acceleration time history diagram of each measuring point; The data analysis module is used to capture the position of each wave peak point and count the total number of occurrences of each wave peak point according to the velocity time history diagram and acceleration time history diagram of each measuring point, so as to obtain the number of hammer blows in the pile driving process and the interval time of each hammer drop.

[0011] Furthermore, the triaxial vibrometer is set up at each measuring point around the planned pile driving point, including: welding the triaxial vibrometer to one end of a steel pipe about 3 meters long, inserting the other end of the steel pipe into the ground until the triaxial vibrometer is slightly above the ground surface by about 3 meters.

[0012] Further, the triaxial vibrometer comprises an accelerometer, a deformable rod and a microcontroller; The deformable rod is used to receive the vibration wave at each measuring point during the hammer pile sinking process, and to generate a relative displacement electrical signal by elastic deformation; The accelerometer has an inertial system composed of built-in particles, which is used to receive the vibration wave at each measuring point during the pile sinking process and generate an offset and output an angular displacement electrical signal; The microcontroller has an input end connected to the output end of the deformable rod and the output end of the accelerometer respectively, and an output end connected to the data acquisition electrical box, and is used to output the velocity value and acceleration value of the vibration wave at each measuring point according to the relative displacement electrical signal and the angular displacement electrical signal.

[0013] Furthermore, the triaxial vibrometer is sealed and connected to the data acquisition electrical box.

[0014] In a third aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first aspect.

[0015] In a fourth aspect, the present invention provides a computer device, comprising: A memory for storing instructions; The processor is used to execute the instructions so that the device performs operations to implement the method described in the first aspect.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The recording method provided by the present invention receives and measures the vibration waves at each measuring point around the pile driving point to be piled during the hammer pile driving process, obtains the velocity value and acceleration value of the vibration waves at each measuring point, and then draws the velocity time history diagram and the acceleration time history diagram of each measuring point, captures the position of each wave peak point and counts the total number of occurrences of each wave peak point, and can monitor in real time the number of hammer blows required for the pile to penetrate the soil for a certain distance, that is, the penetration value, thereby avoiding errors caused by human factors and the lag of paper data recording, and the problem that abnormal data cannot be discovered and processed in time. In addition to being able to record the number of hammer blows in the hammer pile driving process in real time, the present invention can also obtain the interval time of each hammer drop, which is of great significance for evaluating construction efficiency and optimizing construction plans. The recording device provided by the present invention has a simple structure, is easy to operate, and is convenient to move, which is conducive to improving the construction quality. The sealed connection between the triaxial vibration meter and the data acquisition electric box ensures the durability and stability of the equipment. Through cloud storage and remote access by terminal devices, automatic data collection and processing are realized, which not only simplifies the operation process, but also improves the efficiency of data processing. At the same time, cloud storage also ensures the security and traceability of data. The various measuring points in the recording method provided by the present invention are evenly distributed around the pile driving point to be piled, and the positions between each measuring point remain relatively dispersed, thereby enhancing the comprehensiveness and accuracy of the measurement. In addition, by adjusting the installation method of the triaxial vibrometer, including welding with a steel pipe and inserting it into the ground, it can adapt to different construction environments and conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1FIG. 1 is a flow chart of a method for recording the number of hammer blows during pile driving provided by an embodiment of the present invention; Figure 2 The figure shows a schematic diagram of the distribution of a pile driver and a triaxial vibration tester provided in an embodiment of the present invention; Figure 3 Shown is an exploded view of a triaxial vibrometer provided by an embodiment of the present invention; Figure 4 The figure shows a schematic diagram of the acceleration time history at a measuring point around the proposed pile driving point within a period of time provided by an embodiment of the present invention.

[0018] Figure numerals: 1-pile driver; 2-triaxial vibration meter; 3-top cover; 4-accelerometer; 5-data interface; 6-base. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations on the technical solution of the present invention. The embodiments of the present invention and the technical features in the embodiments may be combined with each other unless there is a conflict.

[0020] The term "and / or" is only a description of the association relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " generally indicates that the related objects are in an "or" relationship.

[0021] Example 1

[0022] like Figure 1 As shown, this embodiment introduces a method for recording the number of hammer blows during the hammer pile driving process, including: Step 1: During the pile driving process, the vibration waves at each measuring point around the pile driving point to be driven are received and measured to obtain the velocity value and acceleration value of the vibration waves at each measuring point.

[0023] In the hammer pile driving operation, each drop of the hammer will generate a vibration wave, which will propagate to the surrounding media such as soil, water, etc.

[0024] This embodiment arranges multiple measuring points around the planned pile driving point, receives and measures the vibration waves at each measuring point around the planned pile driving point, obtains the velocity value and acceleration value of the vibration wave at each measuring point, provides detailed information on the propagation characteristics of the vibration wave during the pile driving process, and provides data support for the subsequent drawing of time history diagrams and capturing wave peak points.

[0025] Step 2: Draw a velocity time history diagram and an acceleration time history diagram of each measuring point according to the velocity value and acceleration value of the vibration wave at each measuring point.

[0026] A time chart is a graph that shows the change of a physical quantity over time.

[0027] This embodiment combines the velocity value and acceleration value of the vibration wave at each measuring point with the time axis to draw a velocity time history diagram and an acceleration time history diagram, which can intuitively display the change pattern of the vibration wave over time, make the propagation characteristics of the vibration wave more intuitive and easy to understand, and provide a graphical tool for capturing the peak point of the wave.

[0028] Step 3: According to the velocity time history diagram and acceleration time history diagram of each measuring point, the position of each peak point is captured and the total number of occurrences of each peak point is counted to obtain the number of hammer blows in the pile driving process and the interval time of each hammer drop.

[0029] In the velocity time history diagram and acceleration time history diagram of each measuring point, each time the hammer is dropped, an obvious peak value point will be generated. By capturing the position of these peak values, the time point of each hammer drop can be determined; by counting the total number of peak values ​​that appear, the number of hammer blows in the pile driving process can be obtained; by calculating the time difference between adjacent peak values, the interval time of each hammer drop can be obtained.

[0030] Example 2

[0031] Based on the same inventive concept as Example 1, this example introduces a method for recording the number of hammer blows during the hammer pile driving process, comprising the following steps: Step 1: Arrange several measuring points scattered around the planned pile driving point, and set up a triaxial vibration meter at each measuring point.

[0032] In this embodiment, the triaxial vibrometer 2 is set up at each measuring point around the planned pile driving point, including: welding the triaxial vibrometer to one end of a steel pipe about 3 meters long, inserting the other end of the steel pipe into the ground until the triaxial vibrometer is slightly above the ground surface by about 3 meters.

[0033] In this embodiment, the pile driver 1 and the triaxial vibration meter 2 are arranged as follows: Figure 2 As shown, each measuring point is evenly distributed around the planned pile driving point, and the positions of each measuring point remain relatively dispersed.

[0034] Step 2: During the pile driving process, the vibration waves at each measuring point around the pile driving point to be driven are received and measured to obtain the velocity value and acceleration value of the vibration waves at each measuring point.

[0035] In this embodiment, during the hammer pile driving process, no other pile driver is working within a range of at least 200 meters.

[0036] This embodiment uses a triaxial vibrometer for monitoring, which can simultaneously record the velocity and acceleration values ​​of vibration waves in the radial direction perpendicular to the piling direction, the tangential direction parallel to the piling direction, and the vertical direction. Further combined with existing data and theoretical analysis, it is found that due to the soil squeezing effect and the symmetrical distribution characteristics of the surrounding soil along the pile axis, the vibration amplitude of the soil in the radial direction will be significantly greater than the tangential and vertical vibration amplitudes. Therefore, in order to more easily obtain significant analysis results, this embodiment selects radial vibration wave data as the analysis object.

[0037] Therefore, in this embodiment, the vibration wave is a vibration wave at the radial direction of the soil at each measuring point.

[0038] Step 3: Draw a velocity time history diagram and an acceleration time history diagram of each measuring point according to the velocity value and acceleration value of the vibration wave at each measuring point; Step 4: According to the velocity time history diagram and acceleration time history diagram of each measuring point, the position of each peak point is captured and the total number of occurrences of each peak point is counted to obtain the number of hammer blows in the pile driving process and the interval time of each hammer drop.

[0039] Example 3

[0040] Based on the same inventive concept as other embodiments, this embodiment introduces a device for recording the number of hammer blows during the hammer pile sinking process, comprising: The triaxial vibration meter 2 is set up at each measuring point around the planned pile driving point, and is used to receive and measure the vibration wave at each measuring point during the pile driving process, and obtain the velocity value and acceleration value of the vibration wave at each measuring point.

[0041] The triaxial vibrometer 2 comprises an accelerometer 4, a deformable rod and a microcontroller; The deformable rod is used to receive the vibration wave at each measuring point during the hammer pile sinking process, and to generate a relative displacement electrical signal by elastic deformation; The accelerometer 4 has an inertial system composed of built-in particles, which is used to receive the vibration wave at each measuring point during the pile sinking process and generate an offset and output an angular displacement electrical signal; The microcontroller has an input end connected to the output end of the deformable rod and the output end of the accelerometer 4 respectively, and an output end connected to the data acquisition electrical box, and is used to output the velocity value and acceleration value of the vibration wave at each measuring point according to the relative displacement electrical signal and the angular displacement electrical signal.

[0042] In this embodiment, the triaxial vibrometer 2 also includes a top cover 3, a data interface 5 and a base 6. The velocity value and acceleration value of the vibration wave at each measuring point are transmitted to the data acquisition box through the data interface 5 at the output end of the microcontroller.

[0043] The data acquisition electrical box has a built-in data processor and a gateway, which are respectively connected to the triaxial vibrometer 2 and a DC power supply, and is used to upload the velocity value and acceleration value of the vibration wave at each measuring point to the cloud in real time through the gateway. The triaxial vibrometer 2 is sealed with the data acquisition electrical box.

[0044] In this embodiment, glue is used to properly seal the triaxial vibrometer 2 and the data acquisition electrical box.

[0045] The cloud is used to receive and store the velocity value and acceleration value of the vibration wave at each measuring point, perform data preprocessing, and provide a data access interface to allow remote access by terminal devices; The terminal device is used to access the cloud to obtain the velocity value and acceleration value of the vibration wave at each measuring point, and draw a velocity time history diagram and an acceleration time history diagram of each measuring point; In this embodiment, Figure 4 The diagram shows the acceleration time history recorded over a period of time at a measuring point around the proposed pile driving point provided in this embodiment. Figure 4 Each pulse in represents a hammer blow, and the number of hammer blows in this time period can be determined by identifying the peak or trough position of each time. In addition, it can be observed that the time interval between each adjacent hammer blow is about 1.5 seconds. Each vibration data can truly reflect the vibration state of the corresponding single pile.

[0046] The data analysis module is used to capture the position of each wave peak point and count the total number of occurrences of each wave peak point according to the velocity time history diagram and acceleration time history diagram of each measuring point, so as to obtain the number of hammer blows in the pile driving process and the interval time of each hammer drop.

[0047] The specific functions of the above components are implemented by referring to the relevant contents of the method in Example 1 and will not be elaborated here.

[0048] Example 4

[0049] Based on the same inventive concept as other embodiments, this embodiment introduces a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the method described in Embodiment 1 is implemented.

[0050] Example 5

[0051] Based on the same inventive concept as other embodiments, this embodiment introduces a computer device, including: A memory for storing instructions; The processor is used to execute the instructions so that the device performs operations to implement the method described in Example 1.

[0052] In summary, the recording method provided by the present invention receives and measures the vibration waves at each measuring point around the pile driving point to be piled during the hammer pile driving process, obtains the velocity value and acceleration value of the vibration waves at each measuring point, and then draws the velocity time history diagram and the acceleration time history diagram of each measuring point, captures the position of each wave peak point and counts the total number of occurrences of each wave peak point, and can monitor in real time the number of hammer blows required for the pile to penetrate the soil for a certain distance, that is, the penetration value, thereby avoiding errors caused by human factors and the lag of paper data recording, and the problem that abnormal data cannot be discovered and processed in time. In addition to being able to record the number of hammer blows in the hammer pile driving process in real time, the present invention can also obtain the interval time of each hammer drop, which is of great significance for evaluating construction efficiency and optimizing construction plans. The recording device provided by the present invention has a simple structure, is easy to operate, and is convenient to move, which is conducive to improving the construction quality. The sealed connection between the triaxial vibration meter and the data acquisition electric box ensures the durability and stability of the equipment. Through cloud storage and remote access by terminal devices, automatic data collection and processing are realized, which not only simplifies the operation process, but also improves the efficiency of data processing. At the same time, cloud storage also ensures the security and traceability of data. The various measuring points in the recording method provided by the present invention are evenly distributed around the pile driving point to be piled, and the positions between each measuring point remain relatively dispersed, thereby enhancing the comprehensiveness and accuracy of the measurement. In addition, by adjusting the installation method of the triaxial vibrometer, including welding with a steel pipe and inserting it into the ground, it can adapt to different construction environments and conditions.

[0053] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0054] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1A device that provides the functions specified in a block or multiple blocks.

[0055] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0056] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0057] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all fall within the protection of the present invention.

Claims

1. A method for recording the number of hammer blows during pile driving, characterized in that: include: During the pile driving process, the vibration waves at each measuring point around the pile driving point to be driven are received and measured, and the velocity value and acceleration value of the vibration waves at each measuring point are obtained; According to the velocity value and acceleration value of the vibration wave at each measuring point, a velocity time history diagram and an acceleration time history diagram of each measuring point are drawn; According to the velocity time history diagram and acceleration time history diagram of each measuring point, the position of each wave peak point is captured and the total number of occurrences of each wave peak point is counted to obtain the number of hammer blows in the pile driving process and the interval time of each hammer drop.

2. The method for recording the number of hammer blows during pile driving according to claim 1, characterized in that: Each of the measuring points is evenly distributed around the piling point where the piles are to be sunk, and the positions of each measuring point are kept relatively dispersed.

3. The method for recording the number of hammer blows during pile driving according to claim 1, characterized in that: The vibration wave is a vibration wave at the radial direction of the soil at each measuring point.

4. The method for recording the number of hammer blows during pile driving according to claim 1, characterized in that: During the pile driving process, no other pile drivers are working within a range of at least 200 meters.

5. A device for recording the number of hammer blows during pile driving, characterized in that: include: A triaxial vibration meter is set up at each measuring point around the intended pile driving point to receive and measure the vibration wave at each measuring point during the pile driving process, and obtain the velocity value and acceleration value of the vibration wave at each measuring point; A data acquisition electrical box, with a built-in data processor and a gateway, connected to the triaxial vibrometer and a DC power supply respectively, and used to upload the velocity value and acceleration value of the vibration wave at each measuring point to the cloud in real time through the gateway; The cloud is used to receive and store the velocity value and acceleration value of the vibration wave at each measuring point, perform data preprocessing, and provide a data access interface to allow remote access by terminal devices; The terminal device is used to access the cloud to obtain the velocity value and acceleration value of the vibration wave at each measuring point, and draw a velocity time history diagram and an acceleration time history diagram of each measuring point; The data analysis module is used to capture the position of each wave peak point and count the total number of occurrences of each wave peak point according to the velocity time history diagram and acceleration time history diagram of each measuring point, so as to obtain the number of hammer blows in the pile driving process and the interval time of each hammer drop.

6. The device for recording the number of hammer blows during pile driving according to claim 5, characterized in that: The triaxial vibrometer is set up at each measuring point around the planned pile driving point, including: welding the triaxial vibrometer to one end of a steel pipe about 3 meters long, inserting the other end of the steel pipe into the ground until the triaxial vibrometer is slightly above the ground surface by about 3 meters.

7. The device for recording the number of hammer blows during pile driving according to claim 5, characterized in that: The triaxial vibrometer comprises an accelerometer, a deformable rod and a microcontroller; The deformable rod is used to receive the vibration wave at each measuring point during the hammer pile sinking process, and to generate a relative displacement electrical signal by elastic deformation; The accelerometer has an inertial system composed of built-in particles, which is used to receive the vibration wave at each measuring point during the pile sinking process and generate an offset and output an angular displacement electrical signal; The microcontroller has an input end connected to the output end of the deformable rod and the output end of the accelerometer respectively, and an output end connected to the data acquisition electrical box, and is used to output the velocity value and acceleration value of the vibration wave at each measuring point according to the relative displacement electrical signal and the angular displacement electrical signal.

8. The device for recording the number of hammer blows during pile driving according to claim 5, characterized in that: The triaxial vibration tester is sealed and connected to the data acquisition electric box.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 4 is implemented.

10. A computer device, characterized in that: include: A memory for storing instructions; A processor is used to execute the instructions so that the device performs the operations of implementing the method according to any one of claims 1 to 4.

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