Self-powered bridge deck pavement waterproof bonding layer crack automatic monitoring device

Abstract

The utility model relates to a self-powered bridge deck pavement waterproof bonding layer crack automatic monitoring device, and effectively solves the problem that a piezoelectric sensor of a steel bridge deck waterproof bonding layer monitoring device of the piezoelectric sensor is easy to disturb and cannot realize autonomous supply of electric energy. According to the technical scheme, the steel bridge deck comprises a steel bridge deck body and a waterproof layer laid on the steel bridge deck body, a self-power-supply module and a monitoring module are arranged between the steel bridge deck body and the waterproof layer, the self-power-supply module comprises self-power-supply columns arranged on the steel bridge deck body, the lower ends of the self-power-supply columns are in lap joint with the steel bridge deck body, and the lower ends of the self-power-supply columns are in lap joint with the waterproof layer. The monitoring module comprises a monitoring layer located between the self-powered column and the waterproof layer; the bridge deck pavement waterproof bonding layer is simple in structure and convenient to install, solves the problems that an existing bridge deck pavement waterproof bonding layer cannot achieve autonomous energy supply and monitoring is not accurate enough, and is convenient to control.

Description

TECHNICAL FIELD

[0001] The utility model relates to road engineering construction monitoring field, concretely is a kind of self-powered bridge deck pavement waterproof adhesive layer crack automatic monitoring device. BACKGROUND

[0002] Steel bridge deck is influenced by external environment such as temperature change, damp, leading to the frequent occurrence of waterproof adhesive layer cracking and delamination phenomenon, which can seriously affect the service life of bridge and driving safety, and the introduction of intelligent monitoring technology to detect the crack development of adhesive layer in real time becomes the hotspot of current research.

[0003] Traditional manual detection method is time-consuming and laborious, and is easily influenced by human factors, so that real-time monitoring of crack development state is difficult to realize, and current research mainly focuses on the development and optimization of sensor technology, the improvement of data analysis method and the integration and application of monitoring system.

[0004] Patent with publication number CN109142521A discloses a steel bridge deck waterproof adhesive layer monitoring device and method based on piezoelectric sensor, which responds to electric signal from signal source through piezoelectric actuator installed on waterproof adhesive layer, and then piezoelectric sensor senses vibration and sends corresponding voltage signal to data acquisition instrument and processing module, and analyzes voltage signal through data processing module to determine the damage condition of waterproof adhesive layer;However, piezoelectric sensor is easily disturbed, and may not be accurate in monitoring;At the same time, real-time monitoring consumes more power, and the sensor cannot supply power. SUMMARY

[0005] In order to solve the problem that piezoelectric sensor of steel bridge deck waterproof adhesive layer monitoring device based on piezoelectric sensor is easily disturbed and cannot supply power independently, the utility model provides a kind of self-powered bridge deck pavement waterproof adhesive layer crack automatic monitoring device.

[0006] Its technical solutions include steel bridge deck and waterproof layer paved on steel bridge deck, self-powered module and monitoring module are arranged between steel bridge deck and waterproof layer, the self-powered module includes self-powered column arranged on the steel bridge deck, the lower end of self-powered column is overlapped with the steel bridge deck, and the monitoring module includes monitoring layer between self-powered column and waterproof layer.

[0007] The self-powered column includes coaxially sleeved outer cylinder pole plate and inner cylinder pole plate, and gap is left between outer cylinder pole plate and inner cylinder pole plate, and mica medium is filled in the gap;A columnar permanent magnet is coaxially arranged in the inner cylinder pole plate, and a plurality of annular coils are arranged around the outer part of permanent magnet.

[0008] The upper end of the permanent magnet is connected with connecting rod.

[0009] The monitoring layer comprises an ultrasonic generator and an ultrasonic receiver, the ultrasonic generator is located at the bottom surface of the monitoring layer, and the ultrasonic receiver is located at the top surface of the monitoring layer, and the ultrasonic receiver can receive the ultrasonic waves emitted by the ultrasonic generator and reflected by the waterproof layer.

[0010] The monitoring layer is composed of a plurality of rectangular blocks arranged in an array, and each rectangular block has a block-shaped monitoring network in the interior, and the block-shaped monitoring network has a rectangular monitoring cell thereon.

[0011] The top end and the bottom end of the self-powered column are respectively provided with a rectifier, and the lower part of the monitoring layer and the upper part of the self-powered column are provided with a ring-shaped central controller.

[0012] The self-powered bridge deck pavement waterproof bonding layer crack automatic monitoring device has the advantages of simple structure, convenient installation, and the problems that the existing bridge deck pavement waterproof bonding layer cannot realize self-power supply and the monitoring is not accurate enough are solved, and the control is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a general structure schematic view of the utility model.

[0014] Figure 2 It is a self-powered module schematic view of the utility model.

[0015] Figure 3 It is a crack and monitoring layer schematic view of the utility model.

[0016] Figure 4 It is a block-shaped monitoring network and monitoring cell schematic view of the utility model.

[0017] Figure 5 It is a rectifier and central controller schematic view of the utility model.

[0018] Figure 6 It is a control flow chart of the self-powered module and the monitoring module of the utility model. DETAILED DESCRIPTION

[0019] In combination with the drawings, a self-powered bridge deck pavement waterproof bonding layer crack automatic monitoring device is disclosed, the bridge deck pavement structure comprises a steel bridge deck panel 1 and a waterproof layer 2 paved on the steel bridge deck panel 1, and a self-powered module and a monitoring module are arranged between the steel bridge deck panel 1 and the waterproof layer 2, the self-powered module comprises a self-powered column 3 arranged on the steel bridge deck panel 1, the lower end of the self-powered column 3 is overlapped with the steel bridge deck panel 1, and the monitoring module comprises a monitoring layer 4 located between the self-powered column 3 and the waterproof layer 2; the self-powered column 3 generates electricity by using the vibration of a vehicle passing by, thereby supplying power to the monitoring layer 4, and the monitoring layer 4 monitors whether the waterproof layer 2 produces cracks in real time.

[0020] The self-powered column 3 comprises an outer cylinder plate 5 and an inner cylinder plate 6 coaxially sleeved, a gap is left between the outer cylinder plate 5 and the inner cylinder plate 6, the gap is filled with mica medium, and the outer cylinder plate 5 and the inner cylinder plate 6 thus form a capacitor capable of storing electric energy; a columnar permanent magnet 7 is coaxially arranged in the inner cylinder plate 6, and a plurality of annular coils 8 are arranged around the permanent magnet 7; when a vehicle passes, vibration is transmitted to the permanent magnet 7 to make the permanent magnet 7 vibrate up and down, and an induced current is generated in the annular coil 8, a part of the induced current is used to supply power to the monitoring module, and the other part is stored in the capacitor formed by the outer cylinder plate 5 and the inner cylinder plate 6.

[0021] The upper end of the permanent magnet is connected with a connecting rod 9, and the connecting rod 9 is used to better transmit the vibration of the waterproof layer 2 to the permanent magnet 7.

[0022] The monitoring layer 4 comprises an ultrasonic generator 10 and an ultrasonic receiver 11, the ultrasonic generator 10 is located on the bottom surface of the monitoring layer 4, the ultrasonic receiver 11 is located on the top surface of the monitoring layer 4, and the ultrasonic receiver 11 can receive ultrasonic waves emitted by the ultrasonic generator 10 and reflected by the waterproof layer 2; if a crack is generated in the waterproof layer 2 and the integrity of the waterproof adhesive layer is destroyed, the sound wave can only propagate to the ultrasonic receiver 11 by bypassing the crack, so the propagation distance is increased, the measured sound time is increased, the corresponding sound velocity is reduced, the ultrasonic wave is reflected and scattered at the defect interface, the energy is attenuated, and the wave amplitude is reduced, so if such parameters in a region change, it indicates that a crack is generated in the region.

[0023] The monitoring layer 4 is composed of a plurality of rectangular blocks 12 arranged in an orderly manner, the ultrasonic generator 10 and the ultrasonic receiver 11 are also divided into rectangular small blocks in the same way, and each rectangular block 12 has a block-shaped monitoring network divided by the ultrasonic generator 10 and the ultrasonic receiver 11 in the inside, and a rectangular monitoring cell 14 is arranged on the block-shaped monitoring network, the monitoring cell 14 is the smallest unit for emitting and receiving ultrasonic waves.

[0024] The ultrasonic generator 10 and the ultrasonic receiver 11 each have the self-powered column 3 at the lower part, that is, the self-powered columns 3 form a rectangular array at the lower part of the monitoring layer 4, and each self-powered column 3 supplies power to each rectangular small block of the ultrasonic generator 10 and the ultrasonic receiver 11, so that real-time monitoring is realized.

[0025] The self-powered column 3 is provided with a rectifier 15 at the top end and the bottom end, respectively, the rectifier 15 rectifies the current generated by the self-powered column 3, a ring-shaped central controller 16 is arranged at the lower part of the monitoring layer 4 and the upper part of the self-powered column 3, and the central controller 16 records and compares ultrasonic data.

[0026] The utility model discloses a self -powered steel bridge deck pavement waterproof adhesive layer crack self -monitoring device, its simple structure, easy installation has solved the problem that the current bridge deck pavement waterproof adhesive layer cannot realize self -power supply and the problem that the monitoring is not enough accurate, and convenient control are carried out.

[0027] The monitoring cell 14 on the ultrasonic generator 10 can emit ultrasonic waves, and the monitoring cell 14 on the ultrasonic receiver 11 can receive ultrasonic waves; the ultrasonic waves are emitted and received in real time, are reflected from the waterproof layer 2 to the ultrasonic receiver 11 from the ultrasonic generator 10, and parameters such as sound time, sound velocity and wave amplitude are measured and recorded in the central controller 16; when a crack exists in the waterproof layer 2, the integrity of the waterproof layer 2 is destroyed, and the sound waves can only propagate to the ultrasonic receiver 11 by bypassing the crack, so that the propagation distance increases, the measured sound time increases, the corresponding sound velocity decreases, and the ultrasonic waves are reflected and scattered at the defect interface, energy is attenuated, and the wave amplitude decreases; the central controller 16 records initial parameters such as sound time, sound velocity and wave amplitude; if such parameters in a certain area change, the central controller 16 compares the initial data recorded, and then determines the generation of the crack in the waterproof layer 2.

[0028] The utility model discloses a self -powered steel bridge deck pavement waterproof adhesive layer crack self -monitoring device, its simple structure, easy installation has solved the problem that the current bridge deck pavement waterproof adhesive layer cannot realize self -power supply and the problem that the monitoring is not enough accurate, and convenient control are carried out.

Claims

1. A self-powered bridge deck pavement waterproof bonding layer crack automatic monitoring device, comprising a steel bridge deck plate (1) and a waterproof layer (2) paved on the steel bridge deck plate (1), characterized in that, The self-powered module and the monitoring module are arranged between the steel bridge deck (1) and the waterproof layer (2), the self-powered module comprises a self-powered column (3) arranged on the steel bridge deck (1), the lower end of the self-powered column (3) is overlapped with the steel bridge deck (1), and the monitoring module comprises a monitoring layer (4) located between the self-powered column (3) and the waterproof layer (2).

2. The self-powered bridge deck pavement waterproof bonding layer crack automatic monitoring device according to claim 1, characterized in that, The self-powered column (3) comprises an outer cylinder polar plate (5) and an inner cylinder polar plate (6) coaxially sleeved, a gap is left between the outer cylinder polar plate (5) and the inner cylinder polar plate (6), and the gap is filled with mica medium; a columnar permanent magnet (7) is coaxially arranged in the inner cylinder polar plate (6), and a plurality of annular coils (8) are arranged around the permanent magnet (7).

3. The self-powered bridge deck waterproof bonding layer crack automatic monitoring device according to claim 2, characterized in that, The upper end of the permanent magnet is connected with a connecting rod (9).

4. The self-powered bridge deck pavement waterproof bonding layer crack automatic monitoring device according to claim 1, characterized in that, The monitoring layer (4) comprises an ultrasonic generator (10) and an ultrasonic receiver (11), the ultrasonic generator (10) is located on the bottom surface of the monitoring layer (4), the ultrasonic receiver (11) is located on the top surface of the monitoring layer (4), and the ultrasonic receiver (11) can receive ultrasonic waves emitted by the ultrasonic generator (10) and reflected by the waterproof layer (2).

5. The self-powered bridge deck pavement waterproof bonding layer crack automatic monitoring device according to claim 1 or 4, characterized in that, The monitoring layer (4) is composed of a plurality of rectangular blocks (12) arranged in an array, each rectangular block (12) has a block-shaped monitoring network in the interior, and a rectangular monitoring cell (14) is arranged above the block-shaped monitoring network.

6. The self-powered bridge deck waterproofing bond layer crack automatic monitoring device according to claim 2, characterized in that, The inner top end and the inner bottom end of the self-powered column (3) are respectively provided with a rectifier (15), and the lower part of the monitoring layer (4) and the upper part of the self-powered column (3) are embeddedly provided with a ring-shaped central controller (16).

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