Pile foundation engineering monitoring system based on sound wave detection technology

Abstract

The utility model discloses a pile foundation engineering monitoring system based on a sound wave detection technology. The pile foundation engineering monitoring system comprises a pile foundation construction data acquisition system, a pile foundation construction data transmission system and a pile foundation construction data monitoring application service system, the pile foundation construction data acquisition system comprises a concrete pouring condition detection system used in the concrete pouring process of a pile foundation, and the concrete pouring condition detection system comprises a sound wave detector, a sound wave transmitting probe, a sound wave receiving probe and a probe hanging mechanism. The sound wave transmitting probe and the sound wave receiving probe are in signal connection with the sound wave detector and are arranged in the first sound detection pipe and the second sound detection pipe in a liftable mode through corresponding probe hanging mechanisms, and the first sound detection pipe and the second sound detection pipe are oppositely arranged on the two sides in a pile foundation and extend in the vertical direction. The probe hanging mechanism can control the height of the sound wave transmitting probe and the height of the sound wave receiving probe to be at the designed concrete pouring height. The sound wave emission probe and the like do not need to be directly buried in concrete.

Description

Technical Field

[0001] This utility model relates to a pile foundation engineering monitoring system based on acoustic wave detection technology. Background Technology

[0002] In current pile foundation construction, the concrete pouring process is typically monitored manually on-site. This method is not only labor-intensive and inefficient, but also prone to inaccurate data and untimely recording. Furthermore, it fails to detect issues such as insufficient compaction at the bottom or over-pouring, making real-time and effective monitoring of the pile foundation construction process difficult. The reliability of manual monitoring is even more challenging during nighttime construction. In short, the lack of automated data acquisition and transmission methods poses significant difficulties for quality control and construction management, easily leading to potential quality issues in pile foundation construction.

[0003] The applicant's Chinese patent application with application number 2024232180952 discloses a pile foundation engineering monitoring system, which includes a pile foundation construction data acquisition system, a pile foundation construction data transmission system, and a pile foundation construction data monitoring application service system. Through the organic cooperation of the signal acquisition unit, signal processing unit, and signal transmission unit, the system realizes the automatic acquisition and processing of pile foundation characteristic signals. With the help of the pile foundation construction data monitoring application server, the system performs data analysis and management, thereby establishing a complete data acquisition, transmission, and application system. This effectively solves the technical problems of inaccurate data acquisition and untimely monitoring records in traditional manual monitoring, and provides a reliable technical guarantee for the quality control of pile foundation construction.

[0004] The aforementioned pile foundation engineering monitoring system specifically requires concrete pouring height sensors detachably installed on the top of the reinforcing cage of the corresponding concrete pile, and concrete density sensors detachably installed in the middle and / or lower part of the reinforcing cage of the corresponding concrete pile to detect the concrete pouring height and concrete density of the corresponding concrete pile. These sensors need to be retrieved after the concrete is poured. Since these sensors are embedded in the concrete, the pulling force required to pull them up by the pull wire is very large, which makes the sensors and pull wires easy to be damaged. The sensors also need to be cleaned after being pulled out, which increases the subsequent workload. Utility Model Content

[0005] The purpose of this invention is to provide a pile foundation engineering monitoring system based on acoustic wave detection technology, which solves the technical problem in the background technology that the relevant sensors in the pile foundation engineering monitoring system are not easy to recycle and reuse.

[0006] To address this, a pile foundation engineering monitoring system based on acoustic wave detection technology is provided, comprising a pile foundation construction data acquisition system, a pile foundation construction data transmission system, and a pile foundation construction data monitoring application service system. The pile foundation construction data acquisition system is signal-connected to the pile foundation construction data monitoring application service system via the pile foundation construction data transmission system. The pile foundation construction data acquisition system includes a concrete pouring condition detection system used during the concrete pouring process of the pile foundation. The concrete pouring condition detection system includes an acoustic wave detector, an acoustic wave emitting probe, an acoustic wave receiving probe, and a probe hanging mechanism. The acoustic wave emitting probe and the acoustic wave receiving probe are respectively signal-connected to the acoustic wave detector and are respectively vertically mounted in a first acoustic logging tube and a second acoustic logging tube via the corresponding probe hanging mechanism. The first and second acoustic logging tubes are positioned opposite each other on both sides of the pile foundation and extend vertically. The probe hanging mechanism can control the height of the acoustic wave emitting probe and the acoustic wave receiving probe at the designed concrete pouring height. The pile foundation construction data monitoring application service system includes a pile foundation construction data monitoring application server, which is signal-connected to the acoustic wave detector via the pile foundation construction data transmission system.

[0007] As an optimization and / or instantiation of the aforementioned pile foundation engineering monitoring system based on acoustic wave detection technology, the concrete pouring condition detection system includes a control system that is signal-connected to the probe hanging mechanism. The control system can automatically control the height of the acoustic wave emitting probe and the acoustic wave receiving probe through the probe hanging mechanism.

[0008] As an optimization and / or instantiation of the above-mentioned pile foundation engineering monitoring system based on acoustic wave detection technology, the control system is connected to the acoustic wave detector to obtain the detection results of the acoustic wave detector and send the detection results and the control parameters of the probe hanging mechanism to the pile foundation construction data transmission system.

[0009] As an optimization and / or instantiation of the aforementioned pile foundation engineering monitoring system based on acoustic wave detection technology, the pile foundation construction data transmission system includes a LoRa gateway. The LoRa gateway is connected to the control system via a LoRa network, and the LoRa gateway is connected to the pile foundation construction data monitoring application server via a cellular network.

[0010] As an optimization and / or instantiation of the above-mentioned pile foundation engineering monitoring system based on acoustic wave detection technology, the control system is also connected to the pouring execution mechanism of the concrete pouring equipment used in the concrete pouring process. When the current concrete pouring height is determined to have reached the designed concrete pouring height based on the detection results of the acoustic wave detector and the height control parameters fed back by the probe hanging mechanism, the control system can automatically stop the pouring operation.

[0011] As an optimization and / or instantiation of the above-mentioned pile foundation engineering monitoring system based on acoustic wave detection technology, the control system adopts a PLC controller.

[0012] As an optimization and / or instantiation of the above-mentioned pile foundation engineering monitoring system based on acoustic wave detection technology, during the concrete pouring process, the acoustic wave transmitting probe and the acoustic wave receiving probe are moved from the bottom of the first acoustic tube and the second acoustic tube to the designed concrete pouring height through the corresponding probe hanging mechanism.

[0013] As an optimization and / or instantiation of the aforementioned pile foundation engineering monitoring system based on acoustic wave detection technology, the acoustic wave transmitting probe and the acoustic wave receiving probe maintain the same height during the upward movement.

[0014] As an optimization and / or instantiation of the aforementioned pile foundation engineering monitoring system based on acoustic wave detection technology, the concrete pouring condition detection system includes a control system that is signal-connected to the probe hanging mechanism. The control system can automatically control the height of the acoustic wave transmitting probe and the acoustic wave receiving probe through the probe hanging mechanism. The control system is also signal-connected to the acoustic wave detector to obtain the detection results of the acoustic wave detector. During the concrete pouring process, the control system can obtain the concrete density of the pile foundation cross-section at different heights based on the detection results of the acoustic wave detector and the height control parameters fed back by the probe hanging mechanism.

[0015] As an optimization and / or instantiation of the above-mentioned pile foundation engineering monitoring system based on acoustic wave detection technology, the pile foundation is a cast-in-place concrete pile, and the first acoustic logging tube and the second acoustic logging tube are arranged opposite each other on both sides of the reinforcing cage of the cast-in-place concrete pile.

[0016] The pile foundation engineering monitoring system based on acoustic wave detection technology provided by this utility model, by setting up liftable acoustic wave emitting probes and acoustic wave receiving probes in the first and second acoustic logging tubes respectively, and by using a probe hanging mechanism to control the height of the acoustic wave emitting probes and acoustic wave receiving probes at the designed concrete pouring height, realizes real-time monitoring of the concrete pouring process. It eliminates the need to directly bury the acoustic wave emitting probes and acoustic wave receiving probes in the concrete, thereby completely solving the technical problems of difficult recovery, easy damage and need for cleaning of related sensors in the original pile foundation engineering monitoring system.

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages provided by the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to aid in understanding the present invention. The contents provided in the drawings and their related descriptions in this specification can be used to explain the present invention, but do not constitute an undue limitation on the present invention.

[0019] Figure 1 This is a schematic diagram of a pile foundation engineering monitoring system based on acoustic wave detection technology according to an embodiment of this application.

[0020] Figure 2 for Figure 1 A schematic diagram showing the specific installation of the first and second acoustic logging pipes.

[0021] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0022] Figure 4 for Figure 1 A schematic diagram illustrating the working principle of the medium-wave transmitting probe and the sound wave receiving probe.

[0023] The following are labeled in the diagram: 1. Pile foundation construction data acquisition system; 2. Pile foundation construction data transmission system; 3. Pile foundation construction data monitoring and application service system; 4. Reinforcing cage; 5. Grouting funnel; 10. Concrete pouring status detection system; 11. Acoustic wave detector; 12. Acoustic wave transmitting probe; 13. Acoustic wave receiving probe; 14. Probe hanging mechanism; 15. Control system; 101. First acoustic logging tube; 102. Detailed Implementation

[0024] The present invention will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:

[0025] The technical solutions and features provided in the various sections, including the following description, can be combined with each other without conflict. Furthermore, where possible, these technical solutions, features, and related combinations can be given specific technical subject matter and protected by relevant patents.

[0026] The embodiments of the present invention described below are generally only some embodiments and not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of patent protection.

[0027] The terms "comprising," "including," and any variations thereof in this specification, the corresponding claims, and related sections are intended to cover non-exclusive inclusion. Other related terms and units can be reasonably interpreted based on the relevant content provided in this specification.

[0028] In its Chinese patent application No. 2024232180952, the applicant provided a pile foundation engineering monitoring system, which includes a pile foundation construction data acquisition system, a pile foundation construction data transmission system, and a pile foundation construction data monitoring application service system. Through the organic cooperation of the signal acquisition unit, signal processing unit, and signal transmission unit, the system realizes the automatic acquisition and processing of pile foundation characteristic signals. With the help of the pile foundation construction data monitoring application server, the system performs data analysis and management, thereby establishing a complete data acquisition, transmission, and application system. This effectively solves the technical problems of inaccurate data acquisition and untimely monitoring records in traditional manual monitoring, and provides a reliable technical guarantee for the quality control of pile foundation construction.

[0029] However, the aforementioned pile foundation engineering monitoring system specifically requires concrete pouring height sensors that can be detachably installed on the top of the reinforcing cage of the corresponding concrete pile, and concrete density sensors that can be detachably installed in the middle and / or lower part of the reinforcing cage of the corresponding concrete pile to detect the concrete pouring height and concrete pouring density of the corresponding concrete pile. These sensors need to be retrieved after the concrete is poured. Since these sensors are embedded in the concrete, the pulling force required to pull them up by the pull wire is very large, which makes the sensors and pull wires easy to be damaged. The sensors also need to be cleaned after being pulled out, which increases the subsequent workload.

[0030] Sonic logging tube technology is an existing method in the field of pile foundation testing. Its main principle involves fixing several steel or PVC pipes to a reinforcing cage before pile construction, followed by concrete pouring to form "sonic logging tubes." After the concrete reaches a certain strength, inspectors place the sound wave transmitting and receiving probes of a sonic logging instrument into different tubes, using the sound wave transmission method to test the quality of the pile concrete. The sound waves travel from the transmitting probe through the pile concrete to the receiving probe. The sonic logging instrument analyzes parameters such as sound wave propagation speed, waveform characteristics, and attenuation to determine the density, uniformity, and integrity of the concrete. However, traditional sonic logging tube technology, used for quality inspection after pile foundation construction, does not enable real-time monitoring during the construction process. It is difficult to promptly detect and correct quality problems that arise during construction, thus offering limited help in improving pile foundation construction quality and reducing rework rates.

[0031] Figure 1 This is a schematic diagram of a pile foundation engineering monitoring system based on acoustic wave detection technology according to an embodiment of this application. Figure 2 for Figure 1 A schematic diagram showing the specific installation of the first and second acoustic logging pipes. Figure 3 for Figure 2 A magnified view of a portion of the image. Figure 4 for Figure 1A schematic diagram illustrating the working principle of the medium-wave transmitting probe and the sound wave receiving probe. (See diagram for example.) Figures 1-4 As shown, the pile foundation engineering monitoring system based on acoustic wave detection technology of this utility model includes a pile foundation construction data acquisition system 1, a pile foundation construction data transmission system 2, and a pile foundation construction data monitoring application service system 3. They are connected by wired or wireless signals to form a complete monitoring system.

[0032] The pile foundation construction data acquisition system 1 mainly includes a concrete pouring condition detection system 10, which monitors the concrete pouring quality in real time during the concrete pouring process of the pile foundation. The concrete pouring condition detection system 10 includes a sonic detector 11, a sonic emitting probe 12, a sonic receiving probe 13, and a probe hanging mechanism 14. The sonic emitting probe 12 and the sonic receiving probe 13 are respectively connected to the sonic detector 11 and are respectively mounted in a first sonic logging tube 101 and a second sonic logging tube 102 via their respective probe hanging mechanisms 14. The first sonic logging tube 101 and the second sonic logging tube 102 are arranged opposite each other on both sides of the pile foundation and extend vertically. Typically, these two sonic logging tubes are fixed in the reinforcement cage 4 of the concrete-poured pile. Figures 2-3 As shown.

[0033] The probe suspension mechanism 14 adopts an electric winch structure, including a motor, reducer, and cable reel assembly, which can precisely control the raising and lowering of the acoustic wave emitting probe 12 and the acoustic wave receiving probe 13. The probe suspension mechanism 14 can control the height of the acoustic wave emitting probe 12 and the acoustic wave receiving probe 13 at the designed concrete pouring height, with the purpose of detecting whether the current concrete pouring height has reached the designed concrete pouring height through the acoustic wave emitting probe 12 and the acoustic wave receiving probe 13.

[0034] During the pouring process, when the probe hanging mechanism 14 controls the height of the acoustic wave emitting probe 12 and the acoustic wave receiving probe 13 at the designed concrete pouring height, the acoustic wave propagation situation analyzed by the acoustic wave detector 11 can determine whether concrete has been poured at the height of the acoustic wave emitting probe 12 and the acoustic wave receiving probe 13. When it is determined that concrete has been poured at the height of the acoustic wave emitting probe 12 and the acoustic wave receiving probe 13, it indicates that the current concrete pouring height has reached the designed concrete pouring height.

[0035] The concrete pouring condition detection system 10 may also include a control system 15 that is signal-connected to the probe hanging mechanism 14. The control system 15 employs a PLC controller and can automatically control the height of the acoustic wave transmitting probe 12 and the acoustic wave receiving probe 13 via the probe hanging mechanism 14. The control system 15 can also be signal-connected to the acoustic wave detector 11, enabling it to acquire the detection results from the acoustic wave detector 11 and send these results, along with the control parameters of the probe hanging mechanism 14, to the pile foundation construction data transmission system 2.

[0036] The control system 15 is connected to the probe suspension mechanism 14 via a digital or analog signal interface, and uses a precise closed-loop control method to achieve precise management of the probe position. During operation, the control system 15 sends a start signal and speed command to the motor controller of the probe suspension mechanism 14. The motor drives the reducer to rotate the wire reel assembly, thereby changing the wire length and realizing the raising and lowering of the corresponding acoustic wave transmitting probe 12 or acoustic wave receiving probe 13.

[0037] The pile foundation construction data transmission system 2 includes a LoRa gateway. The LoRa gateway is connected to the control system 15 via a LoRa network, and the LoRa gateway is connected to the pile foundation construction data monitoring application server in the pile foundation construction data monitoring application service system 3 via a cellular network, forming a complete data transmission link.

[0038] The pile foundation construction data monitoring application service system 3 includes a pile foundation construction data monitoring application server. This server is connected to the control system 15 via the pile foundation construction data transmission system 2. It is used to receive, store and analyze detection data, and provide information support for on-site construction personnel and remote supervisors.

[0039] The Pile Foundation Construction Data Monitoring Application Service System 3 can include two platforms: a web terminal and an APP terminal. The web terminal is mainly for management personnel, providing basic data management functions such as pile location maps, record creation, pile completion records, and pile completion statistics, as well as construction process management functions such as pile completion progress management, grouting volume usage, and pile driver report data statistics. The APP terminal is for on-site construction personnel, supporting real-time data viewing and operation records. Through real-time data collection, transmission, and analysis, the system realizes information-based management and quality control of the entire pile foundation construction process.

[0040] In addition, the control system 15 is also connected to the concrete pouring equipment's pouring actuator (located above the grouting funnel 5). During the concrete pouring process, the control system 15 determines whether the current concrete pouring height has reached the designed concrete pouring height based on the detection results of the acoustic wave detector 11 and the height control parameters fed back by the probe hanging mechanism 14. When it is determined that the designed height has been reached, the control system 15 can control the pouring actuator to automatically stop the pouring operation to avoid over-pouring.

[0041] In one optional embodiment, during concrete pouring, the acoustic wave emitting probe 12 and the acoustic wave receiving probe 13 move upward synchronously via their respective probe hanging mechanisms 14, always maintaining their positions at the current concrete pouring surface. During the upward movement, the acoustic wave emitting probe 12 and the acoustic wave receiving probe 13 maintain the same height, and the acoustic wave detector 11 continuously emits and receives acoustic wave signals, analyzing the propagation characteristics of the sound waves in the concrete. The control system 15 obtains real-time concrete density data for the pile foundation cross-section at different heights based on the detection results of the acoustic wave detector 11 and the height control parameters fed back by the probe hanging mechanism 14.

[0042] The principle of acoustic wave testing is to assess concrete quality by utilizing the propagation characteristics of sound waves within concrete. This principle is a commonly used existing technology in the engineering field. It mainly determines the density, uniformity, and integrity of concrete by analyzing parameters such as the propagation speed, waveform characteristics, and attenuation degree of sound waves after passing through concrete. When defects such as pores, cracks, or inclusions exist in the concrete, the propagation characteristics of the sound waves will change, thus allowing them to be detected.

[0043] The acoustic wave detection algorithm used by the acoustic wave detector 11 is based on existing acoustic wave propagation theory, including steps such as transmitting acoustic wave signals, receiving acoustic wave signals, signal processing, and quality assessment. It should be noted that the aforementioned acoustic wave detection algorithm and acoustic wave propagation theory are existing technologies in this field. The innovation of this invention lies in applying these existing technologies to a real-time monitoring system during pile foundation construction, thereby automating quality control during the construction process.

[0044] As can be seen, the pile foundation engineering monitoring system based on acoustic wave detection technology provided by this utility model, by setting up a liftable acoustic wave emitting probe 12 and an acoustic wave receiving probe 13 in the first acoustic logging tube 101 and the second acoustic logging tube 102 respectively, and by using the probe hanging mechanism 14 to control the height of the acoustic wave emitting probe 12 and the acoustic wave receiving probe 13 at the designed concrete pouring height, realizes real-time monitoring of the concrete pouring process. It eliminates the need to directly bury the acoustic wave emitting probe 12 and the acoustic wave receiving probe 13 in the concrete, thereby completely solving the technical problems of difficult recovery, easy damage and need for cleaning of related sensors in the original pile foundation engineering monitoring system.

[0045] The foregoing has described the relevant content of this utility model. Those skilled in the art will be able to implement this utility model based on these descriptions. All other embodiments obtained by those skilled in the art based on the foregoing content of this specification without inventive effort should fall within the scope of this utility model.

Claims

1. A pile foundation engineering monitoring system based on acoustic wave detection technology, characterized in that: It includes a pile foundation construction data acquisition system, a pile foundation construction data transmission system, and a pile foundation construction data monitoring and application service system. The pile foundation construction data acquisition system is connected to the pile foundation construction data monitoring and application service system via the pile foundation construction data transmission system. The pile foundation construction data acquisition system includes a concrete pouring condition detection system used during the concrete pouring process of the pile foundation. The concrete pouring condition detection system includes an acoustic detector, an acoustic emitting probe, an acoustic receiving probe, and a probe hanging mechanism. The acoustic emitting probe and the acoustic receiving probe are respectively connected to the acoustic detector and are respectively installed in the first acoustic logging tube and the second acoustic logging tube through the corresponding probe hanging mechanism. The first acoustic logging tube and the second acoustic logging tube are respectively installed on both sides of the pile foundation and extend in the vertical direction. The probe hanging mechanism can control the height of the acoustic emitting probe and the acoustic receiving probe at the designed concrete pouring height. The pile foundation construction data monitoring application service system includes a pile foundation construction data monitoring application server, which is connected to the acoustic wave detector through the pile foundation construction data transmission system.

2. The pile foundation engineering monitoring system based on acoustic wave detection technology as described in claim 1, characterized in that: The concrete pouring condition detection system includes a control system that is signal-connected to the probe hanging mechanism. The control system can automatically control the height of the acoustic wave emitting probe and the acoustic wave receiving probe through the probe hanging mechanism.

3. The pile foundation engineering monitoring system based on acoustic wave detection technology as described in claim 2, characterized in that: The control system is connected to the acoustic wave detector to obtain the detection results of the acoustic wave detector and send the detection results and the control parameters of the probe hanging mechanism to the pile foundation construction data transmission system.

4. The pile foundation engineering monitoring system based on acoustic wave detection technology as described in claim 3, characterized in that: The pile foundation construction data transmission system includes a LoRa gateway, which is connected to the control system via a LoRa network, and to the pile foundation construction data monitoring application server via a cellular network.

5. The pile foundation engineering monitoring system based on acoustic wave detection technology as described in claim 3, characterized in that: The control system is also connected to the pouring actuator of the concrete pouring equipment used in the concrete pouring process. It can automatically stop the pouring operation when the current concrete pouring height reaches the designed concrete pouring height, based on the detection results of the sonic detector and the height control parameters fed back by the probe hanging mechanism.

6. The pile foundation engineering monitoring system based on acoustic wave detection technology as described in any one of claims 2-5, characterized in that: The control system uses a PLC controller.

7. The pile foundation engineering monitoring system based on acoustic wave detection technology as described in claim 1, characterized in that: During the concrete pouring process, the acoustic wave transmitting probe and the acoustic wave receiving probe are moved from the bottom of the first acoustic tube and the second acoustic tube to the designed concrete pouring height through the corresponding probe hanging mechanism.

8. The pile foundation engineering monitoring system based on acoustic wave detection technology as described in claim 7, characterized in that: The sound wave transmitting probe and the sound wave receiving probe maintain the same height during the upward movement.

9. The pile foundation engineering monitoring system based on acoustic wave detection technology as described in claim 8, characterized in that: The concrete pouring condition detection system includes a control system that is signal-connected to the probe hanging mechanism. The control system can automatically control the height of the acoustic wave emitting probe and the acoustic wave receiving probe through the probe hanging mechanism. The control system is also signal-connected to the acoustic wave detector to obtain the detection results of the acoustic wave detector. During the concrete pouring process, the control system can obtain the concrete density of the pile foundation cross-section at different heights based on the detection results of the acoustic wave detector and the height control parameters fed back by the probe hanging mechanism.

10. The pile foundation engineering monitoring system based on acoustic wave detection technology as described in claim 1, characterized in that: The pile foundation is a cast-in-place concrete pile, and the first and second acoustic logging tubes are set on both sides of the reinforcing cage of the cast-in-place concrete pile.

Images