A method for monitoring the vibration compaction of embedded concrete

Abstract

The application belongs to the field of building, and particularly relates to a buried concrete vibration compaction monitoring method, which adopts a buried concrete vibration quality monitor. The buried concrete vibration quality monitor comprises a closed shell, a power supply battery module arranged in the closed shell, a communication module, a vibration detection module, and can supply power to the communication module and the vibration detection module. The vibration detection module is used for monitoring the vibration signal of the shell. The communication module is connected with the vibration detection module and can be connected with a control end through a wireless communication connection mode. The communication module receives the vibration signal of the shell monitored by the vibration detection module and transmits the vibration signal to the control end through the wireless communication connection mode. The application is directly applied to a concrete vibration construction site, and the vibration frequency, amplitude and number of a set region in the concrete are monitored in a vibration construction process, so that whether there is a missing vibration or over-vibration phenomenon is ensured, and the vibration operation region and number are adjusted according to the monitoring condition.

Description

Technical Field

[0001] This invention belongs to the field of construction, specifically relating to a method for monitoring the vibration compaction of embedded concrete. Background Technology

[0002] When pouring concrete into structural members, air bubbles must be removed and the concrete must be compacted to ensure a dense bond and eliminate defects such as honeycomb and pitting, thereby improving its strength and ensuring the quality of the concrete members. A concrete vibrator is a device that uses a power source to generate frequent vibrations, which are then transmitted to the concrete to compact it. It is primarily operated manually. Currently, on construction sites, workers are required to operate the vibrator according to the site conditions, which can easily lead to over-vibration or under-vibration, and these issues are often difficult to detect.

[0003] Among various non-destructive testing techniques for defects in concrete structures, the ultrasonic method has been widely adopted due to its advantages such as simple testing equipment, convenient operation, and strong penetration ability. In 1990, my country promulgated the "Technical Specification for Ultrasonic Testing of Concrete Defects". The specification was revised and supplemented in 1998-1999 and approved by the China Association for Engineering Construction Standardization as the "Technical Specification for Ultrasonic Testing of Concrete Defects" (CECS 21:2000) (hereinafter referred to as the "Defect Testing Specification").

[0004] The principle behind ultrasonic testing of concrete defects is as follows: when the constituent materials, processing conditions, internal quality, and testing distance of the concrete are constant, the ultrasonic parameters such as ultrasonic velocity and initial wave amplitude at each measuring point generally do not differ significantly. However, if a portion of the concrete has defects such as voids, looseness, or cracks, the ultrasonic wave passing through the defective concrete will exhibit a significantly longer duration and a significantly reduced amplitude, with other acoustic parameters also showing significant changes. Based on this fundamental principle, a relative comparison of acoustic parameters such as duration (velocity), amplitude, and frequency is made between concrete samples under the same testing conditions to determine the extent of concrete defects. Patent CN201010527541.1 discloses a method for determining the internal looseness defects of concrete structure joints using ultrasonic testing.

[0005] Patent CN202210156038.2 discloses a device and method for detecting the density of concrete. The device includes: a ring body composed of a first and second half-ring with identical structures and an adjusting seat connecting the first and second half-rings; a fixed seat including a seat body and a platform mounted on the seat body, one end of the seat body being hinged to the other end of the first half-ring, and the other end of the seat body being hinged to the other end of the second half-ring; a striking device mounted on the platform, the striking device including a swing hammer and a drive mechanism for controlling the swing of the swing hammer, the swing hammer being used to strike the concrete to be tested; and a measuring device mounted on the ring body for collecting the sound generated by the striking device striking the concrete, the measuring device including multiple sound sensors and a display connected to the sound sensors; wherein one end of the first half-ring is hinged to the adjusting seat, and one end of the second half-ring is detachably connected to the adjusting seat. It determines the presence of defects in the concrete by striking the concrete.

[0006] The above methods are all for testing the density of concrete after construction is completed, and cannot be used for monitoring during the vibration construction process. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a method for monitoring the vibration compaction of embedded concrete.

[0008] The technical solution adopted in this invention is as follows: a method for monitoring the vibration compaction of embedded concrete, which uses an embedded concrete vibration quality monitor. The embedded concrete vibration quality monitor includes a closed shell, a power supply battery module, a communication module, and a vibration detection module disposed within the closed shell. The power supply battery module stores a certain amount of electrical energy and can supply power to the communication module and the vibration detection module. The vibration detection module is used to monitor the vibration signal of the shell. The communication module is connected to the vibration detection module and can be connected to a control terminal via a wireless communication connection. The communication module receives the vibration signal of the shell monitored by the vibration detection module and transmits it to the control terminal via a wireless communication connection.

[0009] The shell is provided with a connection structure for connecting to the reinforcing bars;

[0010] The method includes the following steps:

[0011] 1. Install steel reinforcement bars and fix them in the target area;

[0012] 2. An embedded concrete vibration quality monitoring device is fixed on the reinforcing steel. The fixing position and number can be set as needed.

[0013] 3. Pour concrete;

[0014] 4. Concrete is vibrated using a concrete vibrator. During the vibration process, the vibration detection module monitors the vibration information in real time and transmits it wirelessly to the control terminal via the communication module. The control terminal analyzes the vibration information to determine whether there is any under-vibration or over-vibration in the area corresponding to the embedded concrete vibration quality monitor. If there is under-vibration, additional vibration work can be carried out in that area. If there is over-vibration, further vibration work in that area should be avoided in subsequent vibration operations.

[0015] The housing is equipped with an ultrasonic receiving module, which is connected to a communication module. The communication module receives the ultrasonic signals monitored by the ultrasonic receiving module and transmits them to the control terminal via wireless communication.

[0016] The method further includes the following steps:

[0017] 5. An ultrasonic transmitting module is installed on the concrete surface to emit ultrasonic signals. The ultrasonic receiving module transmits the received ultrasonic signals to the control terminal. The control terminal determines whether there are defects in the propagation path based on the ultrasonic signals received by the ultrasonic receiving module.

[0018] The housing contains a storage module that stores single identity information or location information. The communication module transmits signals to the control terminal via wireless communication, which include the single identity information or location information stored in the storage module.

[0019] The connection structure for connecting to the reinforcing bars consists of cable ties and a flexible connecting strip connecting the cable ties and the shell.

[0020] The connection structure for connecting to the reinforcing bars consists of cable ties and a universal connection structure connecting the cable ties and the shell.

[0021] The universal connection structure includes a first connecting shaft connected to the outer wall of the housing, a first connecting part disposed at the outer end of the first connecting shaft, a second connecting part connected to the first connecting part, and a second connecting shaft fixedly connected to the second connecting part. The first connecting part is a spherical protrusion, and the second connecting part is a spherical limiting cover wrapped around the first connecting part.

[0022] The second connecting part is connected to an elastic sealing sleeve that tightly wraps around the first connecting part and the first connecting shaft.

[0023] The shell is made of engineering plastic, and it is ellipsoidal with a smooth curved outer surface.

[0024] The housing is also equipped with a vibration motor, and the output shaft of the vibration motor is connected to an eccentric counterweight module;

[0025] For devices exhibiting vibration leakage, a start command can be transmitted from the control terminal to the communication module, thereby enabling the power supply battery module to power the vibration motor and start it.

[0026] The housing contains independent power circuit chambers, vibration detection chambers, motor chambers, and eccentric counterweight module chambers. The power supply battery module and communication module are located in the power circuit chamber, the vibration detection module is located in the vibration detection chamber, the vibration motor is located in the motor chamber, and the eccentric counterweight module is located in the eccentric counterweight module chamber and is fixedly connected to the output shaft extending into the eccentric counterweight module chamber.

[0027] The beneficial effects of this invention are as follows: This invention can be directly applied to concrete vibration construction sites. During the vibration construction process, the vibration frequency, amplitude, and number of vibrations in a set area within the concrete are monitored to ensure that there is no leakage or over-vibration. Based on the monitoring results, the vibration operation area and number of vibrations can be adjusted. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of the present invention.

[0029] Figure 1 This is a schematic diagram of the structure of Example 1;

[0030] Figure 2 This is a schematic diagram showing the coordination of the modules in Example 1;

[0031] Figure 3 This is a schematic diagram of the structure of Example 1 and its connection with reinforcing bars;

[0032] Figure 4 This is a schematic diagram of ultrasonic testing in Example 1.

[0033] Figure 5 This is a schematic diagram of the connection joint used to connect with the reinforcing bars in Example 2;

[0034] In the diagram, 1 is the housing; 2 is the power supply battery module; 3 is the communication module; 4 is the vibration detection module; 5 is the ultrasonic receiving module; 6 is the storage module; 7 is the cable tie; 8 is the flexible connecting strap; 901 is the first connecting shaft; 902 is the first connecting part; 903 is the second connecting part; 904 is the second connecting shaft; 905 is the elastic sealing sleeve; 10 is the reinforcing bar; 11 is the control end; 12 is the vibration motor; 1201 is the output shaft; 13 is the eccentric counterweight module; and 14 is the ultrasonic transmitting module. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] It should be noted that all uses of "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of the present invention. Subsequent embodiments will not explain this in detail.

[0037] The directional and positional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for illustrating and understanding this invention, and not for limiting the scope of protection of this invention.

[0038] A method for monitoring the compaction of embedded concrete using vibration, comprising an embedded concrete vibration quality monitoring device, wherein the embedded concrete vibration quality monitoring device, such as... Figure 1-2 As shown, it includes a closed housing 1, a power supply battery module 2, a communication module 3, and a vibration detection module 4 disposed inside the closed housing 1. The power supply battery module 2 stores a certain amount of electrical energy and can supply power to the communication module 3 and the vibration detection module 4. The vibration detection module 4 is used to monitor the vibration signal of the housing 1. The communication module 3 is connected to the vibration detection module 4 and can be connected to the control terminal 11 through a wireless communication connection. The communication module 3 receives the vibration signal of the housing 1 monitored by the vibration detection module 4 and transmits it to the control terminal 11 through a wireless communication connection.

[0039] The housing 1 is provided with a connection structure for connecting to the reinforcing bars;

[0040] The method includes the following steps:

[0041] I. For example Figure 3-4 As shown, steel reinforcement is erected and fixed in the target area;

[0042] 2. An embedded concrete vibration quality monitoring device is fixed on the reinforcing steel. The fixing position and number can be set as needed.

[0043] 3. Pour concrete;

[0044] 4. Concrete is vibrated using a concrete vibrator. During the vibration process, the vibration detection module 4 monitors the vibration information in real time and transmits it wirelessly to the control terminal via the communication module. The control terminal analyzes the vibration information to determine whether the concrete in the area corresponding to the embedded concrete vibration quality monitor has under-vibration or over-vibration. If there is under-vibration, additional vibration work can be carried out in the area. If there is over-vibration, further vibration work in the area should be avoided in subsequent vibration operations.

[0045] The battery module 2 should have sufficient power to complete one vibration compaction monitoring operation and signal output. The receiver can be a mobile phone, computer, or dedicated monitor. The wireless signal transmission method between the receiver and communication module 3 can be selected according to the actual situation; for example, Bluetooth or Wi-Fi can be used for short distances, while radio waves or cellular wireless networks can be used for long distances. The vibration detection module 4 can use a commercially available vibration sensor.

[0046] The housing 1 is equipped with an ultrasonic receiving module 5, which is connected to a communication module 3. The communication module 3 receives the ultrasonic signals monitored by the ultrasonic receiving module 5 and transmits them to the control terminal through a wireless communication connection.

[0047] The method further includes the following steps:

[0048] 5. An ultrasonic transmitting module 12 is installed on the concrete surface to emit ultrasonic signals. The ultrasonic receiving module 5 transmits the received ultrasonic signals to the control terminal 11. The control terminal 11 determines whether there are defects in the propagation path based on the ultrasonic signals received by the ultrasonic receiving module 5.

[0049] The embedded concrete vibration quality monitor provided in this embodiment can be used in conjunction with current ultrasonic monitoring technology to receive ultrasonic signals inside the concrete and transmit them through the communication module 3. Based on the received ultrasonic signals, it can determine whether there are defects such as holes, lack of compaction or cracks in the concrete in the corresponding area, and can more effectively determine the location of the defect area.

[0050] The housing 1 contains a storage module 6, which stores unique identification information or location information. The communication module 3 transmits signals to the control terminal via wireless communication, including the unique identification information or location information stored in the storage module 6. The unique identification information can be a unique identifier, meaning each embedded concrete vibrator has a unique identifier. The receiving end can record the location information of each embedded concrete vibrator with that identifier. When the signal transmitted by one of the embedded concrete vibrator is abnormal, the location of the corresponding area can be quickly identified. The location information can be the three-dimensional coordinates of the location where the embedded concrete vibrator is set. Alternatively, the location information can be directly stored in the storage module 6.

[0051] The connection structure for connecting to the reinforcing steel consists of cable ties 7 and a flexible connecting strip 8 connecting the cable ties 7 and the shell 1. The cable ties 10 are fixed to the reinforcing steel by wrapping around the reinforcing steel, which is low cost and the cable ties 10 themselves have great flexibility. Together with the flexible connecting strip 8, the shell 1 can vibrate with the vibration of the concrete.

[0052] The shell 1 is made of engineering plastic, which refers to plastics that can be used as engineering materials and to replace metals in the manufacture of machine parts. Engineering plastics have excellent comprehensive properties, including high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation. They can be used for a long time in harsh chemical and physical environments and can replace metals as engineering structural materials. The shell 1 is ellipsoidal in shape, and its outer circumference is a smooth curved surface. This enhances the compressive strength of the vibrator in concrete and reduces the resistance between the vibrator and the concrete during vibration.

[0053] The housing 1 is also provided with a vibration motor 12, and the output shaft 1201 of the vibration motor 12 is connected to an eccentric counterweight module 13.

[0054] For devices exhibiting vibration leakage, a start command can be transmitted from the control terminal 11 to the communication module 3, thereby enabling the power supply battery module 2 to supply power to the vibration motor 12 and start the vibration motor 12.

[0055] In areas where existing concrete vibrators cannot effectively operate due to the complexity of concrete construction sections, the vibration module of an embedded concrete vibration quality monitor can be used to vibrate in the corresponding area to achieve compaction. To determine whether to activate the vibration motor 12 of the embedded concrete vibration quality monitor, if the preset standard cannot be achieved after selecting supplementary vibration operations, a command can be sent to the embedded concrete vibration quality monitor via the control terminal to activate the vibration motor 12. The command sent from the control terminal can include the rotational speed and rotation time of the vibration motor 12, thereby controlling the vibration frequency and vibration time of the embedded concrete vibration quality monitor.

[0056] The housing 1 has independent power circuit chamber, vibration detection chamber, motor chamber and eccentric counterweight module chamber. The power supply battery module 2 and communication module 3 are located in the power circuit chamber, the vibration detection module 4 is located in the vibration detection chamber, the vibration motor 12 is located in the motor chamber, and the eccentric counterweight module 13 is located in the eccentric counterweight module chamber and is fixedly connected to the output shaft 1201 extending into the eccentric counterweight module chamber.

[0057] Furthermore, the eccentric counterweight module 13 can be made replaceable, which allows for the prior estimation of areas requiring greater vibration from the embedded concrete vibrator, and the installation of a more suitable eccentric counterweight module 13 in the corresponding areas.

[0058] Example 2:

[0059] This embodiment has a structure that is largely the same as that of Embodiment 1, the difference being the connection structure used for connecting with reinforcing bars. For example... Figure 4 As shown, the connection structure for connecting with the reinforcing bars consists of a cable tie 7 and a universal connection structure connecting the cable tie 7 and the shell 1.

[0060] The universal joint structure includes a first connecting shaft 901 connected to the outer wall of the housing 1, a first connecting portion 902 disposed at the outer end of the first connecting shaft 901, a second connecting portion 903 connected to the first connecting portion 902, and a second connecting shaft 904 fixedly connected to the second connecting portion 903. The first connecting portion 902 is a spherical protrusion, and the second connecting portion 903 is a spherical limiting cover surrounding the first connecting portion 902. This configuration allows for a large range of rotation.

[0061] The second connecting portion 903 is connected to an elastic sealing sleeve 905 that tightly wraps around the first connecting portion 902 and the first connecting shaft 901. The elastic sealing sleeve 905 prevents concrete from entering between the first connecting portion 902 and the first connecting shaft 901 during concrete pouring and reduces the likelihood of concrete entering between the first connecting portion 902 and the first connecting shaft 901 during subsequent vibration, thus increasing the degree of freedom of rotation of the housing 1 relative to the reinforcing steel. The elastic sealing sleeve 905 can be made of silicone or other biodegradable polymer rubber.

[0062] Compared with the structure of Example 1, the structure of this example is more stable and controllable.

[0063] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as ROM / RAM, disk, optical disk, etc.

[0064] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A method for monitoring the vibration compaction of embedded concrete, characterized in that: It adopts an embedded concrete vibration quality monitoring device, which includes a closed shell (1), a power supply battery module (2), a communication module (3), and a vibration detection module (4) installed in the closed shell (1). The power supply battery module (2) stores a certain amount of electrical energy and can supply power to the communication module (3) and the vibration detection module (4). The vibration detection module (4) is used to monitor the vibration signal of the shell (1). The communication module (3) is connected to the vibration detection module (4) and can be connected to the control terminal (11) through wireless communication. The communication module (3) receives the vibration signal of the shell (1) monitored by the vibration detection module (4) and transmits it to the control terminal (11) through wireless communication. The shell (1) is provided with a connection structure for connecting to the reinforcing bars; The method includes the following steps:

1. Install steel reinforcement bars and fix them in the target area; 2. An embedded concrete vibration quality monitoring device is fixed on the reinforcing steel. The fixing position and number can be set as needed.

3. Pour concrete; 4. Concrete is vibrated by a concrete vibrator. During the vibration process, the vibration detection module (4) monitors the vibration information in real time and transmits it wirelessly to the control terminal through the communication module. The control terminal analyzes the vibration information to determine whether the concrete in the area corresponding to the embedded concrete vibration quality monitor has leakage or over-vibration. If there is leakage, the area can be further vibrated. If there is over-vibration, the area should be avoided in subsequent vibration operations. The connection structure for connecting with the reinforcing bars consists of a cable tie (7) and a flexible connecting strip (8) connecting the cable tie (7) and the shell (1), or the connection structure for connecting with the reinforcing bars consists of a cable tie (7) and a universal connection structure connecting the cable tie (7) and the shell (1). The housing (1) is also provided with a vibration motor (12), and the output shaft (1201) of the vibration motor (12) is connected to an eccentric counterweight module (13). For those with leakage vibration, the control terminal (11) can transmit a start command to the communication module (3) so that the power supply battery module (2) can supply power to the vibration motor (12) to start the vibration motor (12).

2. The embedded concrete vibration compaction monitoring method according to claim 1, characterized in that: The housing (1) is provided with an ultrasonic receiving module (5), which is connected to a communication module (3). The communication module (3) receives the ultrasonic signal monitored by the ultrasonic receiving module (5) and transmits it to the control terminal through a wireless communication connection. The method further includes the following steps:

5. An ultrasonic transmitting module is installed on the concrete surface to emit ultrasonic signals. The ultrasonic receiving module (5) transmits the received ultrasonic signals to the control terminal (11). The control terminal (11) determines whether there are defects in the propagation path based on the ultrasonic signals received by the ultrasonic receiving module (5).

3. The embedded concrete vibration compaction monitoring method according to claim 1, characterized in that: The housing (1) is provided with a storage module (6), which stores single identity information or location information. The signal transmitted from the communication module (3) to the control terminal via wireless communication includes the single identity information or location information stored in the storage module (6).

4. The embedded concrete vibration compaction monitoring method according to claim 1, characterized in that: The universal connection structure includes a first connecting shaft (901) connected to the outer wall of the housing (1), a first connecting part (902) disposed at the outer end of the first connecting shaft (901), a second connecting part (903) connected to the first connecting part (902), and a second connecting shaft (904) fixedly connected to the second connecting part (903). The first connecting part (902) is a spherical protrusion, and the second connecting part (903) is a spherical limiting cover wrapped around the first connecting part (902).

5. The embedded concrete vibration compaction monitoring method according to claim 4, characterized in that: The second connecting part (903) is connected to an elastic sealing sleeve (905) that tightly wraps around the first connecting part (902) and the first connecting shaft (901).

6. The embedded concrete vibration compaction monitoring method according to claim 1, characterized in that: The shell (1) is made of engineering plastic, and the shell (1) is ellipsoidal with a smooth curved surface on its outer periphery.

7. The embedded concrete vibration compaction monitoring method according to claim 1, characterized in that: The housing (1) is provided with an independent power circuit chamber, vibration detection chamber, motor chamber and eccentric counterweight module chamber. The power supply battery module (2) and communication module (3) are located in the power circuit chamber. The vibration detection module (4) is located in the vibration detection chamber. The vibration motor (12) is located in the motor chamber. The eccentric counterweight module (13) is located in the eccentric counterweight module chamber and is fixedly connected to the output shaft (1201) extending into the eccentric counterweight module chamber.

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