Device for monitoring indoor installation torque and vertical force of spiral steel pile and using method

Abstract

The invention discloses a spiral steel pile indoor installation torque and vertical force monitoring device and a using method.The spiral steel pile indoor installation torque and vertical force monitoring device comprises a strain gauge, a spiral steel pile, a wireless power supply component, a wireless data transmission component and a wireless data receiving component, the strain gauge is arranged on the spiral steel pile, and the wireless power supply component is arranged at the pile top of the spiral steel pile; the wireless data transmission part comprises a data collection unit and a wireless transmitting unit, one side of the data collection unit is connected with a wire of the strain gauge, the other side of the data collection unit is connected with the wireless transmitting unit, and the wireless power supply part comprises a transmitting end and a receiving end. And the wireless data receiving component comprises a wireless signal receiving unit, a data processing unit and a data storage and display unit. According to the spiral steel pile indoor installation torque and vertical force monitoring device and the using method, the accuracy of installation torque and vertical force measurement is improved, and the wireless power supply technology is adopted.

Description

Technical Field

[0001] The invention relates to the technical field of geotechnical engineering pile foundation, and in particular to a device for monitoring torque and vertical force of indoor installation of spiral steel piles and a method for using the device. Background Art

[0002] Screw piles are widely used in various renewable energy infrastructures, especially in the fields of solar photovoltaic foundations, offshore wind power generation foundations and geothermal development energy piles. Its advantages include fast construction speed, low environmental disturbance and adaptability to various soil conditions. The changes in the installation torque and axial force during the installation of the screw piles affect their subsequent axial or lateral bearing capacity. When conducting indoor installation tests of screw piles, it is necessary to accurately monitor their installation torque to measure the installation torque and installation vertical force of the blades, pile ends and side surfaces of the central steel shaft at different positions of the screw pile.

[0003] The measurement is performed by sticking strain gauges or strain rosettes at different positions of the spiral steel pile. However, during the installation process of the spiral steel pile under rotation and pressure, the traditional measurement method mainly relies on the external wire connection of the strain gauge, which will have the following problems: the operation is complicated, winding and arranging cables at the pile head requires a lot of time and manpower, which increases the complexity and workload of the construction; the test is difficult, and the cable is easily affected by the external environment, such as being pulled, entangled or damaged, resulting in unstable or failed signal transmission, affecting the accuracy of the test results; data collection limitations: due to the limitations of cable layout, it is difficult to monitor multiple locations at the same time in real time, resulting in incomplete or untimely data collection. Summary of the invention

[0004] The purpose of the present invention is to provide a spiral steel pile indoor installation torque and vertical force monitoring device and a use method, so as to improve the accuracy of installation torque and vertical force measurement and simplify power supply and data transmission methods.

[0005] The present invention provides a spiral steel pile indoor installation torque and vertical force monitoring device and a use method, comprising a strain gauge, a spiral steel pile, a wireless power supply component, a wireless data transmission component and a wireless data receiving component, wherein the strain gauge is arranged on the spiral steel pile, the wireless power supply component is arranged on the pile top of the spiral steel pile, the wireless data transmission component comprises a data collection unit and a wireless transmitting unit, one side of the data collection unit is connected to the wire of the strain gauge, and the other side of the data collection unit is connected to the wireless transmitting unit, the wireless power supply component comprises a transmitting end and a receiving end, the wireless data receiving component comprises a wireless signal receiving unit, a data processing unit and a data storage and display unit, and the wireless signal receiving unit matches the wireless transmitting unit.

[0006] Preferably, the transmitting end of the wireless power supply component maintains a distance within 1 cm from the wireless data transmission component, and the receiving end of the wireless power supply component is integrated in the wireless data transmission component.

[0007] Preferably, the strain gauge is adhered to the central steel shaft of the spiral steel pile adjacent to the blade, the pile end and the side of the central steel shaft, the strain gauge is fixed using a high-strength adhesive, and the surface of the strain gauge is covered with a protective coating or protective shell.

[0008] Preferably, the wire of the strain gauge is led out through a protective pipe inside or outside the spiral steel pile. The protective pipe is made of wear-resistant and waterproof material, and a sealing device needs to be installed at the outlet of the protective pipe.

[0009] Preferably, a protective shell is installed on the outside of the wireless data transmission component.

[0010] Preferably, the wireless transmitting unit of the wireless data transmission component adopts low-power wireless communication technology.

[0011] Preferably, the transmitting end of the wireless power supply component includes a power supply, a power amplifier and a transmitting coil or antenna.

[0012] Preferably, the receiving end of the wireless power supply component includes a receiving coil, a rectifier and a power management circuit.

[0013] A method for using a torque and vertical force monitoring device for indoor installation of a spiral steel pile comprises the following steps:

[0014] S1. Paste the strain gauges near the central steel shaft of different blades of the spiral steel pile, the pile end and the side of the central steel shaft, and install the wires and protective pipes. Install the transmitter and receiver of the wireless data transmission component and the wireless power supply component on the top of the spiral steel pile, and ensure that the equipment is connected reliably.

[0015] S2. Perform preliminary debugging to ensure that the connection between the strain gauge, wire and wireless transmission component is normal, check whether the communication connection between the wireless data receiving component and the wireless data transmission component is normal, and ensure the accuracy of the data and the stability of the wireless transmission;

[0016] S3, the torque and vertical force data collected by the strain gauge are transmitted to the wireless data transmission component through the wire, the wireless data transmission component processes the torque and vertical force data and sends them to the wireless data receiving component through wireless signals, and the wireless power supply component continuously provides power to the wireless transmitting unit and the data collection unit;

[0017] S4. The wireless data receiving component receives the torque and vertical force data, processes and analyzes them through the data processing unit, calculates the installation torque and installation vertical force of the spiral steel pile, uses the built-in algorithm and processor to process the data in real time, stores the processed data in the data storage and display unit, and displays the measurement results in real time through the display device. The operator views the real-time data and historical data through the display screen.

[0018] Therefore, the present invention adopts the above-mentioned spiral steel pile indoor installation torque and vertical force monitoring device and use method to improve the accuracy of installation torque and vertical force measurement: through the wireless testing device, real-time monitoring and accurate measurement of the installation torque of each part of the spiral blade and the central steel shaft during the installation of the spiral steel pile are realized to ensure the installation quality; wireless power supply technology is adopted to eliminate the complexity of wired wiring, and at the same time, the construction efficiency is improved through the wireless data transmission system, and the equipment failure rate and maintenance cost are reduced; the problems of high cost, low efficiency and time consumption are solved, so that the installation of spiral steel piles is efficient, reliable and convenient.

[0019] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of a device for monitoring torque and vertical force of indoor installation of spiral steel piles and a method for using the device;

[0021] Figure 2 A schematic diagram of a transmitting end in a wireless power supply component of a device and method for monitoring torque and vertical force of a spiral steel pile installed indoors according to the present invention;

[0022] Figure 3 A schematic diagram of a receiving end in a wireless power supply component of a device and method for monitoring torque and vertical force of a spiral steel pile installed indoors according to the present invention;

[0023] Figure 4 The present invention is a schematic diagram of a wireless data receiving component of a spiral steel pile indoor installation torque and vertical force monitoring device and a use method.

[0024] Reference numerals

[0025] 1. Strain gauge; 2. Screw steel pile; 3. Wireless power supply component; 4. Wireless data transmission component; 5. Wireless data receiving component; 51. Wireless signal receiving unit; 52. Data processing unit; 53. Data storage and display unit. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0027] Unless otherwise defined, technical or scientific terms used in the present invention shall have the common meanings understood by one having ordinary skills in the field to which the present invention belongs.

[0028] The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprises" and similar terms mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0029] Embodiment 1

[0030] like Figure 1-4 As shown, the present invention provides a spiral steel pile indoor installation torque and vertical force monitoring device and use method, including a strain gauge 1, a spiral steel pile 2, a wireless power supply component 3, a wireless data transmission component 4 and a wireless data receiving component 5. The strain gauge 1 is arranged on the spiral steel pile 2, and the strain gauge 1 is pasted on different blades, pile ends and the side of the central steel shaft of the spiral steel pile 2, and is used to monitor the installation torque and installation vertical force in real time. The strain gauge 1 is fixed with a high-strength adhesive, and the surface of the strain gauge 1 is covered with a protective coating or protective shell. The strain gauge 1 is 45° with the axis to test the torque of the pile, and the strain gauge parallel to the pile axis monitors the axial force of the pile.

[0031] The conductor of the strain gauge 1 is led out through the inside of the spiral steel pile 2, that is, the central steel axis of the steel pipe, or the external protective pipe. The protective pipe is made of wear-resistant and waterproof materials. A sealing device needs to be installed at the outlet of the protective pipe to effectively prevent external dust and other impurities from entering the interior of the pipe, thereby avoiding damage to the interior of the pipe or affecting the normal operation of the pipe.

[0032] The wireless power supply component 3 is arranged at the top of the spiral steel pile 2, and a protective shell is installed outside the wireless power supply component 3 to effectively reduce these radiations and interferences.

[0033] The wireless transmission component 4 includes a data collection unit and a wireless transmission unit. The data collection unit is used to collect the signal of the strain gauge 1 and perform preliminary processing. The data collection unit filters, amplifies and digitizes the data of the strain gauge 1 through a built-in microprocessor.

[0034] One side of the data collection unit is connected to the wire of the strain gauge 1, and the other side of the data collection unit is connected to the wireless transmission unit. The wireless transmission unit adopts low-power wireless communication technology, such as Bluetooth or Zigbee.

[0035] The wireless power supply component 3 includes a transmitter and a receiver. The transmitter and the wireless data transmission component 3 are kept within a distance of 1 cm, and the receiver is integrated in the wireless data transmission component 3. During the installation of the spiral steel pile 2 rotating downward, the transmitter of the wireless power supply component 3 does not rotate with the spiral steel pile 2, but moves downward with the spiral steel pile 2. The receiver of the wireless power supply component 3 and the wireless data transmission component 5 rotate downward together with the spiral steel pile 2. During the process, the vertical distance between the transmitter and the receiver of the wireless power supply component 3 is kept unchanged to ensure the high transmission efficiency of the wireless power supply.

[0036] The transmitter is responsible for converting electrical energy into an electromagnetic field. Low-frequency alternating current is rectified, low-frequency AC to DC is converted, and DC is converted into high-frequency alternating current through inversion. Alternating current generates a magnetic field at the resonant frequency through a coupling coil to achieve energy transmission, and the magnetic field is transmitted in space. Then it is transmitted to the receiving end. The transmitter includes a power supply, a power amplifier, and a transmitting coil. The transmitting coil is usually used to transmit electrical energy through electromagnetic induction or magnetic resonance. The receiving end receives the electromagnetic field transmitted by the transmitter and converts it into electrical energy to supply the load. The receiving end includes a receiving coil, a rectifier, and a power management circuit. The receiving coil is used to receive electromagnetic waves and convert them into alternating current. The rectifier converts the alternating current into direct current to supply the load.

[0037] The wireless data receiving component 5 includes a wireless signal receiving unit 51, a data processing unit 52 and a data storage and display unit 53. The wireless signal receiving unit 51 receives the signal from the strain gauge 1 through the data collection unit. The wireless signal receiving unit 51 is matched with the wireless transmitting unit to ensure stable signal reception.

[0038] The data processing unit 52 further processes and analyzes the received data to calculate the installation torque and installation vertical force of the spiral steel pile 2. The data processing unit 52 has a built-in high-performance processor and algorithm for real-time processing and analysis of data. The data storage and display unit 53 includes storing the processed data and displaying the measurement results in real time through a display device. The storage component of the data storage and display unit 53 can be an SD card or other storage device, and the display component of the data storage and display unit 53 can be an LCD or LED display screen.

[0039] The specific operation process includes the following steps:

[0040] S1. Paste the strain gauge 1 on different blades, pile ends and the side of the central steel shaft of the spiral steel pile 2, install the wires and protective pipes, install the wireless power supply component 3 and the receiving end 5 of the wireless data transmission component 4 on the top of the spiral steel pile 2, and ensure that the equipment is connected reliably;

[0041] S2. Perform preliminary debugging to ensure that the connection between the strain gauge 1, the wire and the wireless power supply component 3 is normal, check whether the communication connection between the receiving end and the wireless data transmission component 4 is normal, and ensure the accuracy of the data and the stability of the wireless transmission;

[0042] S3, the torque and vertical force data collected by the strain gauge 1 are transmitted to the wireless data transmission component 4 through the wire, the wireless data transmission component 4 processes the torque and vertical force data and sends them to the wireless signal receiving unit 51 through the wireless signal, and the wireless power supply component 3 continuously provides power to the wireless transmitting unit and the data collection unit;

[0043] S4, the wireless signal receiving unit 51 receives the torque and vertical force data, processes and analyzes them through the data processing unit 52, calculates the installation torque and installation vertical force of the spiral steel pile 2; uses the built-in algorithm and processor to process the data in real time. The processed data is stored in the data storage and display unit 53, and the measurement results are displayed in real time through the display device; the operator can view the real-time data and historical data through the display screen.

[0044] Therefore, the present invention adopts the above-mentioned spiral steel pile indoor installation torque and vertical force monitoring device and use method to improve the accuracy of installation torque and vertical force measurement: through the wireless testing device, real-time monitoring and accurate measurement of the installation torque of each part of the spiral blade and the central steel shaft during the installation of the spiral steel pile are realized to ensure the installation quality; wireless power supply technology is adopted to eliminate the complexity of wired wiring, and at the same time, the construction efficiency is improved through the wireless data transmission system, and the equipment failure rate and maintenance cost are reduced; the problems of high cost, low efficiency and time consumption are solved, so that the installation of spiral steel piles is efficient, reliable and convenient.

[0045] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A device for monitoring torque and vertical force of spiral steel piles installed indoors. It is characterized in that It includes a strain gauge, a spiral steel pile, a wireless power supply component, a wireless data transmission component and a wireless data receiving component. The strain gauge is arranged on the spiral steel pile, the wireless power supply component is arranged on the pile top of the spiral steel pile, the wireless data transmission component includes a data collection unit and a wireless transmitting unit, one side of the data collection unit is connected to the wire of the strain gauge, and the other side of the data collection unit is connected to the wireless transmitting unit. The wireless power supply component includes a transmitting end and a receiving end. The wireless data receiving component includes a wireless signal receiving unit, a data processing unit and a data storage and display unit. The wireless signal receiving unit and the wireless transmitting unit are matched.

2. A device for monitoring torque and vertical force of spiral steel piles installed indoors according to claim 1, It is characterized in that The transmitting end of the wireless power supply component maintains a distance within 1 cm from the wireless data transmission component, and the receiving end of the wireless power supply component is integrated in the wireless data transmission component.

3. A device for monitoring torque and vertical force of spiral steel piles installed indoors according to claim 1, It is characterized in that The strain gauge is pasted on the central steel shaft of the spiral steel pile adjacent to the blade, the pile end and the side of the central steel shaft. The strain gauge is fixed with a high-strength adhesive, and the surface of the strain gauge is covered with a protective coating or a protective shell.

4. A device for monitoring torque and vertical force of spiral steel piles installed indoors according to claim 1, It is characterized in that The wire of the strain gauge is led out through a protective pipe inside or outside the spiral steel pile. The protective pipe is made of wear-resistant and waterproof materials, and a sealing device needs to be installed at the outlet of the protective pipe.

5. The device for monitoring torque and vertical force of spiral steel piles installed indoors according to claim 1, It is characterized in that A protective shell is installed outside the wireless data transmission component.

6. A device for monitoring torque and vertical force of spiral steel piles installed indoors according to claim 1, It is characterized in that The wireless transmitting unit of the wireless data transmission component adopts low-power wireless communication technology.

7. The device for monitoring torque and vertical force of spiral steel piles installed indoors according to claim 1, It is characterized in that The transmitting end of the wireless power supply component includes a power supply, a power amplifier and a transmitting coil or antenna.

8. The device for monitoring torque and vertical force of spiral steel piles installed indoors according to claim 1, It is characterized in that The receiving end of the wireless power supply component includes a receiving coil, a rectifier and a power management circuit.

9. A method for using the device for monitoring torque and vertical force of a spiral steel pile installed indoors as claimed in any one of claims 1 to 8, It is characterized in that The following steps are involved: S1. Paste the strain gauges near the central steel shaft of different blades of the spiral steel pile, the pile end and the side of the central steel shaft, and install the wires and protective pipes. Install the transmitter and receiver of the wireless data transmission component and the wireless power supply component on the top of the spiral steel pile, and ensure that the equipment is connected reliably. S2. Perform preliminary debugging to ensure that the connection between the strain gauge, wire and wireless transmission component is normal, check whether the communication connection between the wireless data receiving component and the wireless data transmission component is normal, and ensure the accuracy of the data and the stability of the wireless transmission; S3, the torque and vertical force data collected by the strain gauge are transmitted to the wireless data transmission component through the wire, the wireless data transmission component processes the torque and vertical force data and sends them to the wireless data receiving component through wireless signals, and the wireless power supply component continuously provides power to the wireless transmitting unit and the data collection unit; S4. The wireless data receiving component receives the torque and vertical force data, processes and analyzes them through the data processing unit, calculates the installation torque and installation vertical force of the spiral steel pile, uses the built-in algorithm and processor to process the data in real time, stores the processed data in the data storage and display unit, and displays the measurement results in real time through the display device. The operator views the real-time data and historical data through the display screen.

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