A construction engineering foundation pile detection system and method

Abstract

The present invention discloses a construction engineering pile foundation detection system and method, including a central processing module, wherein the central processing module is bidirectionally electrically connected to an acoustic wave transducer module and a human-computer interaction terminal, and the output end of the central processing module is electrically connected to the input end of an initial reading calibration module, and the central processing module is bidirectionally electrically connected to a wave velocity conversion unit, an amplitude conversion unit, and a pile foundation defect judgment unit, respectively. The present invention relates to the field of pile foundation detection technology. The construction engineering pile foundation detection system and method can realize comprehensive analysis and judgment by combining wave velocity parameters and amplitude parameters to accurately judge the position of defects in the pile, thus achieving the purpose of quickly and conveniently detecting pile foundations, greatly reducing detection errors through multi-parameter analysis of detection sound waves, achieving high detection accuracy, and being able to accurately judge the position of defects, thereby greatly facilitating people's use.

Description

Technical Field

[0001] The present invention relates to the technical field of pile foundation detection, and in particular to a construction engineering pile foundation detection system and method. Background Art

[0002] The main methods for pile foundation testing include static load testing, core drilling, low-strain testing, high-strain testing, and acoustic transmission testing. The static load test is currently recognized as the most direct and reliable method for testing the vertical compressive bearing capacity of foundation piles. However, in engineering practice, issues with the reference piles are sometimes overlooked by testers, leading to insufficient penetration depth and displacement during the test. Static load tests can be divided into heap load tests and anchor pile methods. The core drilling method is scientific, intuitive, and practical, and is widely used in testing cast-in-place concrete piles. A complete and successful core drilling test can determine the pile length, concrete strength, sediment thickness at the pile bottom, and pile integrity, and can also determine or identify the geotechnical properties of the bearing stratum at the pile end. Coring technology has a significant impact on testing and judgment. A project initially used an XY-1 engineering drill rig with carbide single-tube drilling tools, employing a combination of low-pressure, slow-speed, low-volume drilling and dry drilling. The result was a core recovery rate of less than 70%, with extremely poor core sample integrity and mostly fragmented. Later, a switch to an SCZ-1 hydraulic drill rig with diamond single-action double-tube drilling tools achieved a core recovery rate of 99%. The acoustic transmission method, due to diffusion, transmission, and reflection, can affect detection results. The recent emergence of multi-channel ultrasonic testing instruments has greatly increased detection efficiency. This testing method obtains a set of acoustic data (cross-section), analyzes the data, removes outliers, and calculates the average value (sound velocity and amplitude). The data at each measurement point is then compared to the average value. If the amplitude drops beyond a certain range (e.g., a 6dB drop), the point is considered defective. This testing method can also be applied to the inspection of underground diaphragm walls and hydraulic dams, with the acoustic transmission method currently being the most commonly used.

[0003] The current acoustic wave transmission method has low detection accuracy and cannot accurately determine the location of defects. It cannot combine the wave velocity parameters and amplitude parameters for comprehensive analysis and judgment to accurately determine the location of defects in the pile. It cannot achieve the purpose of quickly and conveniently detecting foundation piles, and cannot greatly reduce detection errors through multi-parameter analysis of detection sound waves, which brings great inconvenience to people's use. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to the deficiencies of the prior art, the present invention provides a construction engineering foundation pile detection system and method, which solves the problems of low detection accuracy of the existing sound wave transmission method, inability to accurately determine the location of defects, inability to combine wave velocity parameters and amplitude parameters for comprehensive analysis and judgment to accurately determine the location of defects in the pile, inability to achieve the purpose of quickly and conveniently detecting foundation piles, and inability to significantly reduce detection errors through multi-parameter analysis of detection sound waves.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a construction engineering pile detection system, including a central processing module, which is bidirectionally electrically connected to the acoustic wave transducer module and the human-computer interaction terminal respectively, and the output end of the central processing module is electrically connected to the input end of the initial reading calibration module, the central processing module is bidirectionally electrically connected to the wave velocity conversion unit, the amplitude conversion unit and the pile defect judgment unit respectively, and the output end of the acoustic wave transducer module is electrically connected to the input end of the initial reading calibration module, and the output ends of the wave velocity conversion unit and the amplitude conversion unit are both electrically connected to the input end of the pile defect judgment unit.

[0008] Preferably, the wave velocity conversion unit includes a tube edge distance acquisition module, a sound transmission time timing module and a wave velocity calculation module.

[0009] Preferably, the output end of the tube inner edge distance acquisition module is electrically connected to the input end of the sound transmission time timing module, and the output end of the sound transmission time timing module is electrically connected to the input end of the wave speed calculation module.

[0010] Preferably, the amplitude conversion unit includes a measuring point amplitude determination module, an average amplitude calculation module and an abnormal amplitude highlighting module.

[0011] Preferably, the output end of the measuring point amplitude determination module is electrically connected to the input end of the average amplitude calculation module, and the output end of the average amplitude calculation module is electrically connected to the input end of the abnormal amplitude highlighting module.

[0012] Preferably, the pile defect judgment unit includes a wave velocity probability analysis module, an amplitude data analysis module, a defect range size determination module and a defect comprehensive judgment module, and the output end of the wave velocity probability analysis module is electrically connected to the input end of the amplitude data analysis module.

[0013] Preferably, the output end of the amplitude data analysis module is electrically connected to the input end of the defect range size determination module, and the output end of the defect range size determination module is electrically connected to the input end of the defect comprehensive judgment module.

[0014] The present invention also provides a method for detecting foundation piles in a construction project, which specifically comprises the following steps:

[0015] S1. Preparation before testing: Fill the test tube with clean water, place the radial transducer into the tube, and test section by section from top to bottom with a test spacing of 20-50 cm. Every two acoustic test tubes form a pair of test surfaces. The measured parameters are sound time and amplitude. When using the radial transducer for testing in the acoustic test tube, calibrate it using the initial reading calibration module;

[0016] S2. Wave velocity calculation: The central processing module controls the acoustic wave transducer module to initiate ultrasonic testing in the test tube. During the testing process, the central processing module controls the pipe edge distance acquisition module in the wave velocity conversion unit to collect the distance between the inner edges of the two acoustic test tubes. The sound propagation time timing module then times the sound propagation time at the measuring point, and the wave velocity calculation module calculates the collected wave velocity.

[0017] S3. Amplitude calculation: The central processing module controls the measuring point amplitude determination module in the amplitude conversion unit to detect the echo amplitude value of each test point in the detection tube. The average amplitude calculation module then averages the amplitude values ​​of each test point to obtain an average amplitude value. The abnormal amplitude highlighting module then highlights the amplitude detection points whose amplitude data detected by the test points differ significantly from the average amplitude value from the detection object and marks them as abnormal detection points.

[0018] S4. Defect determination: The central processing module controls the wave velocity probability analysis module in the pile defect determination unit to perform probability determination based on the wave velocity value, and finds out the possible defective parts in combination with the size of the PSD value. The amplitude data analysis module then analyzes the change in amplitude, and defines those measurement areas where the wave velocity is lower than the critical value and the amplitude is significantly lower as defective parts. The defect range and size determination module then determines the range and size of the defect based on the detailed measurement and oblique measurement data. The comprehensive defect determination module then comprehensively determines the nature of the defect based on the position of the defect on the pile, the pile-forming process, and the construction conditions.

[0019] (3) Beneficial effects

[0020] The present invention provides a construction engineering pile foundation detection system and method. Compared with the prior art, the construction engineering pile foundation detection system and method have the following advantages: the construction engineering pile foundation detection system and method include a central processing module, the central processing module is bidirectionally electrically connected to the acoustic wave transducer module and the human-computer interaction terminal, and the output end of the central processing module is electrically connected to the input end of the initial reading calibration module. The central processing module is bidirectionally electrically connected to the wave velocity conversion unit, the amplitude conversion unit, and the pile foundation defect judgment unit, and the output end of the acoustic wave transducer module is electrically connected to the input end of the initial reading calibration module, and the output ends of the wave velocity conversion unit and the amplitude conversion unit are both electrically connected to the input end of the pile foundation defect judgment unit. The wave velocity parameters and amplitude parameters can be combined for comprehensive analysis and judgment to accurately determine the location of defects in the pile, thus achieving the purpose of both rapid and convenient pile foundation detection. The detection error is greatly reduced through multi-parameter analysis of the detection sound waves, the detection accuracy is high, and the defect location can be accurately determined, thereby greatly facilitating people's use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural principle block diagram of the detection system of the present invention;

[0022] Figure 2 This is a block diagram of the structural principle of the pile defect judgment unit of the present invention;

[0023] Figure 3 Flowchart of the detection method of the present invention.

[0024] In the figure, 1 is a central processing module, 2 is an acoustic wave transducer module, 3 is a human-computer interaction terminal, 4 is an initial reading calibration module, 5 is a wave velocity conversion unit, 51 is a pipe inner edge spacing acquisition module, 52 is a sound transmission time timing module, 53 is a wave velocity calculation module, 6 is an amplitude conversion unit, 61 is a measuring point amplitude determination module, 62 is an average amplitude calculation module, 63 is an abnormal amplitude highlighting module, 7 is a pile defect judgment unit, 71 is a wave velocity probability analysis module, 72 is an amplitude data analysis module, 73 is a defect range size determination module, and 74 is a defect comprehensive judgment module. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-3, an embodiment of the present invention provides a technical solution: a construction engineering pile foundation detection system, including a central processing module 1, the central processing module 1 is bidirectionally electrically connected to the acoustic wave transducer module 2 and the human-computer interaction terminal 3, and the output end of the central processing module 1 is electrically connected to the input end of the initial reading calibration module 4, the central processing module 1 is bidirectionally electrically connected to the wave velocity conversion unit 5, the amplitude conversion unit 6 and the pile foundation defect judgment unit 7, and the output end of the acoustic wave transducer module 2 is electrically connected to the input end of the initial reading calibration module 4, and the output ends of the wave velocity conversion unit 5 and the amplitude conversion unit 6 are both electrically connected to the input end of the pile foundation defect judgment unit 7.

[0027] In an embodiment of the present invention, the wave velocity conversion unit 5 includes a tube edge spacing acquisition module 51, a sound transmission time timing module 52 and a wave velocity calculation module 53. The output end of the tube edge spacing acquisition module 51 is electrically connected to the input end of the sound transmission time timing module 52, and the output end of the sound transmission time timing module 52 is electrically connected to the input end of the wave velocity calculation module 53.

[0028] In the embodiment of the present invention, the amplitude conversion unit 6 includes a measuring point amplitude measurement module 61, an average amplitude calculation module 62 and an abnormal amplitude highlighting module 63. The output end of the measuring point amplitude measurement module 61 is electrically connected to the input end of the average amplitude calculation module 62, and the output end of the average amplitude calculation module 62 is electrically connected to the input end of the abnormal amplitude highlighting module 63.

[0029] In an embodiment of the present invention, the pile defect judgment unit 7 includes a wave velocity probability analysis module 71, an amplitude data analysis module 72, a defect range size determination module 73 and a defect comprehensive judgment module 74. The output end of the wave velocity probability analysis module 71 is electrically connected to the input end of the amplitude data analysis module 72, the output end of the amplitude data analysis module 72 is electrically connected to the input end of the defect range size determination module 73, and the output end of the defect range size determination module 73 is electrically connected to the input end of the defect comprehensive judgment module 74.

[0030] The present invention also provides a method for detecting foundation piles in a construction project, which specifically includes the following steps:

[0031] S1. Preparation before testing: Fill the test tube with clean water, place the radial transducer in the tube, and test section by section from top to bottom. The test spacing is 20-50 cm. Every two acoustic test tubes form a pair of test surfaces. The measured parameters are sound time and amplitude. When using the radial transducer for testing in the acoustic test tube, calibrate it using the initial reading calibration module 4;

[0032] S2. Wave velocity calculation: The central processing module 1 controls the acoustic wave transducer module 2 to initiate ultrasonic testing in the test tube. During the testing process, the central processing module 1 controls the pipe edge distance acquisition module 51 in the wave velocity conversion unit 5 to acquire the distance between the inner edges of the two acoustic test tubes. The sound propagation time timing module 52 then times the sound propagation time at the measuring point. The acquired wave velocity is then calculated by the wave velocity calculation module 53.

[0033] S3. Amplitude calculation: The central processing module 1 controls the measuring point amplitude determination module 61 in the amplitude conversion unit 6 to detect the echo amplitude value of each test point in the detection tube. The average amplitude calculation module 62 then averages the amplitude values ​​of each test point to obtain an average amplitude value. The abnormal amplitude highlighting module 63 then highlights the amplitude detection points whose amplitude data detected at the test points differ significantly from the average amplitude value from the detection object and marks them as abnormal detection points.

[0034] S4. Defect determination: The central processing module 1 controls the wave velocity probability analysis module 71 in the pile defect determination unit 7 to perform a probability determination based on the wave velocity value, and finds out the possible defective parts in combination with the size of the PSD value. The amplitude data analysis module 72 then analyzes the change in amplitude and defines those measurement areas where the wave velocity is lower than the critical value and the amplitude is significantly lower as defective parts. The defect range and size determination module 73 then determines the range and size of the defect based on the detailed measurement and oblique measurement data. The defect comprehensive determination module 74 then comprehensively determines the nature of the defect based on the position of the defect on the pile, the pile construction process, and the construction conditions.

[0035] In summary, the present invention can realize the comprehensive analysis and judgment by combining the wave velocity parameters and the amplitude parameters to accurately judge the position of the defect in the pile, and well achieves the purpose of detecting the foundation pile quickly and conveniently. It realizes the multi-parameter analysis of the detection sound wave to greatly reduce the detection error, has high detection accuracy, and can accurately judge the defect location, thereby greatly facilitating people's use.

[0036] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A construction engineering foundation pile detection system, comprising a central processing module (1), characterized in that: The central processing module (1) is bidirectionally electrically connected to the acoustic wave transducer module (2) and the human-computer interaction terminal (3), and the output end of the central processing module (1) is electrically connected to the input end of the initial reading calibration module (4). The central processing module (1) is bidirectionally electrically connected to the wave velocity conversion unit (5), the amplitude conversion unit (6) and the pile defect judgment unit (7), and the output end of the acoustic wave transducer module (2) is electrically connected to the input end of the initial reading calibration module (4). The output ends of the wave velocity conversion unit (5) and the amplitude conversion unit (6) are both electrically connected to the input end of the pile defect judgment unit (7). The wave velocity conversion unit (5) includes a tube inner edge distance acquisition module (51), a sound transmission time timing module (52), and a wave velocity calculation module (53); The output end of the tube inner edge distance acquisition module (51) is electrically connected to the input end of the sound transmission time timing module (52), and the output end of the sound transmission time timing module (52) is electrically connected to the input end of the wave speed calculation module (53); The amplitude conversion unit (6) includes a measuring point amplitude determination module (61), an average amplitude calculation module (62) and an abnormal amplitude highlighting module (63); The output end of the measuring point amplitude determination module (61) is electrically connected to the input end of the average amplitude calculation module (62), and the output end of the average amplitude calculation module (62) is electrically connected to the input end of the abnormal amplitude highlighting module (63); The pile defect judgment unit (7) comprises a wave velocity probability analysis module (71), an amplitude data analysis module (72), a defect range size determination module (73) and a defect comprehensive judgment module (74), wherein the output end of the wave velocity probability analysis module (71) is electrically connected to the input end of the amplitude data analysis module (72); The output end of the amplitude data analysis module (72) is electrically connected to the input end of the defect range size determination module (73), and the output end of the defect range size determination module (73) is electrically connected to the input end of the defect comprehensive judgment module (74).

2. A detection method for implementing the construction engineering pile detection system according to claim 1, characterized in that: The specific steps include: S1. Preparation before testing: Fill the test tube with clean water, place the radial transducer in the tube, and test from top to bottom section by section. The test spacing is 20-50 cm. Every two acoustic test tubes form a pair of test surfaces. The measured parameters are sound time and amplitude. When using the radial transducer for testing in the acoustic test tube, calibrate it through the initial reading calibration module (4); S2, wave velocity calculation: the central processing module (1) controls the acoustic wave transducer module (2) to start ultrasonic testing in the test tube. During the testing process, the central processing module (1) controls the tube edge distance acquisition module (51) in the wave velocity conversion unit (5) to acquire the distance between the inner edges of the two acoustic test tubes, and then uses the sound propagation time timing module (52) to time the sound propagation time at the measuring point. The collected wave velocity is then calculated by the wave velocity calculation module (53); S3. Amplitude calculation: The central processing module (1) controls the measuring point amplitude determination module (61) in the amplitude conversion unit (6) to detect the echo amplitude value of each test point in the detection tube, and then calculates the average value of the amplitude values ​​of each test point through the average amplitude calculation module (62) to obtain the average amplitude value. Then, the abnormal amplitude highlighting module (63) highlights the amplitude detection points whose amplitude data detected by some test points have a large difference with the average amplitude value from the detection object and marks them as abnormal detection points; S4. Defect determination: The central processing module (1) controls the wave velocity probability analysis module (71) in the pile defect determination unit (7) to perform probability determination based on the wave velocity value, and finds out the possible defect locations by combining the PSD value. Then, the amplitude data analysis module (72) analyzes the amplitude change and defines the measurement areas where the wave velocity is lower than the critical value and the amplitude is obviously low as defect locations. Then, the defect range and size determination module (73) determines the range and size of the defect based on the detailed measurement and oblique measurement data. After that, the defect comprehensive determination module (74) comprehensively determines the nature of the defect based on the location of the defect on the pile, the pile forming process and the construction conditions.

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