Intelligent monitoring device for bridge reinforcement

Abstract

The utility model belongs to the technical field of bridge engineering, and discloses an intelligent monitoring device for bridge reinforcement, which is characterized by comprising a prestress monitoring device and an intelligent alarm device, the prestress monitoring device is arranged at the bottom of a bridge and used for monitoring the prestress deformation of the bridge, and the intelligent alarm device is arranged at the upper structure of the bridge and used for alarming the prestress deformation of the bridge. The bridge panel deformation monitoring system is compact and reasonable in structural design, can monitor the deformation of the bridge panel, stores and transmits a detection value to external equipment, and can detect the deformation condition of the bridge panel so as to master the change condition of the bridge prestress. The working performance of the bridge under different loads and environments is evaluated, a scientific basis is provided for maintenance and reinforcement of the bridge, abnormal phenomena such as prestress loss can be found in time, alarm information can be sent, large accidents can be prevented, and the safety of the bridge can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge engineering technical field, concretely is a kind of intelligent monitoring device for bridge reinforcement. BACKGROUND

[0002] In modern transportation system, highway bridges and large bridges play a pivotal role. Highway bridges, as the key nodes of highway traffic, bear the heavy responsibility of connecting different regions and promoting the circulation of personnel and goods. They span mountains, rivers, ravines and other terrains, making the highway network coherent, providing great convenience for economic development and people's daily life. Large bridges, such as cross-river and cross-sea bridges, are not only landmark buildings of transportation infrastructure, but also important support for regional economic development. These bridges are often the core components of transportation hubs, having a profound impact on regional trade, tourism development, etc.

[0003] With the passage of time and the continuous increase of traffic flow, bridge structures will gradually appear various damages and diseases. Bridge long-term bear vehicle load, natural environment erosion (such as rain, ultraviolet, temperature change, etc.) and earthquake, wind disaster and other natural disasters, its structure performance will gradually decline. In order to ensure the safe operation of bridge, bridge maintenance and reinforcement work is particularly important. Bridge maintenance includes daily inspection, cleaning, maintenance, etc., aiming at discovering and handling some initial small problems in time, preventing them from further deterioration. Bridge reinforcement is for bridge with serious damage or insufficient bearing capacity, through a series of technical measures, improve the bearing capacity and stability of bridge, prolong its service life.

[0004] At present, the existing bridge detection mainly adopts periodic detection method. This detection method is to carry out comprehensive inspection on bridge once a year or every few years according to certain time interval. Detection content includes appearance inspection, structure material performance detection, load test, etc. However, this detection method has obvious limitations. If bridge is damaged by unexpected situation, such as sudden strong wind, flood, ship collision and other natural disasters or accidents, during two detections, it may cause large accident without taking preventive measures. Because the time interval of periodic detection is relatively long, it is difficult to monitor the structure state change of bridge under various complex conditions in real time, once unexpected damage occurs, it is difficult to discover and take effective repair measures in time, thus bringing great hidden danger to the safety of bridge.

[0005] In addition, the maintenance and reinforcement of the bridge is based on a single source, which has obvious limitations. The current maintenance and reinforcement decision is mainly based on the data of periodic detection and the experience of the detection personnel. However, only relying on the periodic detection data cannot comprehensively reflect the actual stress condition and structural performance change of the bridge in the daily operation. The stress state of the bridge is quite different under different time periods, different traffic flows and environmental conditions, and the periodic detection can only obtain the information at a certain time, and cannot cover all situations of the bridge in the entire operation cycle. At the same time, the experience judgment of the detection personnel also has subjectivity and uncertainty, different detection personnel may have different opinions and judgment standards for the same problem, which leads to difficulty in making accurate judgments on whether the bridge needs to be maintained and reinforced.

[0006] In summary, the existing bridge detection and maintenance method has been difficult to meet the needs of modern bridge safe operation. It is urgent to need a more advanced and intelligent monitoring device, which can monitor the structural state of the bridge in real time, discover potential safety hazards in time, and provide comprehensive and accurate basis for the maintenance and reinforcement of the bridge. The intelligent monitoring device for bridge reinforcement introduced in this paper is developed based on such background, aiming to solve the deficiencies in the prior art and provide more reliable protection for the safe operation of the bridge. Content of the utility model

[0007] (1) Technical problem solved

[0008] In view of the deficiencies of the prior art, the utility model provides an intelligent monitoring device for bridge reinforcement to solve the problems of preventing bridge damage accidents and providing basis for bridge maintenance and reinforcement in the background technology.

[0009] (2) Technical scheme

[0010] In order to achieve the above purpose, the utility model provides the following technical scheme: an intelligent monitoring device for bridge reinforcement, characterized in that it comprises:

[0011] A prestress monitoring device is arranged at the bottom of the bridge for monitoring the prestress deformation of the bridge. The prestress monitoring device comprises a pre-embedded sensor and a sensor processing device. The pre-embedded sensor is embedded in the inside of the bottom side of the bridge deck slab. The sensor processing device is arranged near the pre-embedded sensor at the bottom of the bridge. One side of the pre-embedded sensor is provided with a connecting lead wire. The pre-embedded sensor and the sensor processing device are electrically connected through the connecting lead wire.

[0012] An intelligent alarm device is arranged at the upper structure of the bridge for analyzing and processing the data transmitted by the prestress monitoring device and alarming according to the data.

[0013] Preferably, the embedded sensor comprises an embedded structure strip, a piezoelectric ceramic sheet and a fixed end, the embedded structure strip is arranged in the embedded hole of the bridge, the two ends of the embedded structure strip are provided with the fixed end, a plurality of fixed holes are formed in the fixed end, the embedded structure strip is fixed in the embedded hole through the fixed pin, and the piezoelectric ceramic sheet is arranged on the vertical downward side of the embedded structure strip.

[0014] Preferably, the sensor processing device comprises a detector shell and internal detector electronic structure, a plurality of fixed lugs are arranged on the detector shell, and the sensor processing device is fixedly installed at the bottom of the bridge deck through the fixed lug and the bolt.

[0015] Preferably, the detector electronic structure comprises a voltage detection circuit and a data acquisition recorder, the connecting wire is electrically connected with the piezoelectric ceramic sheet, the other end of the connecting wire is electrically connected with the voltage detection circuit, the data acquisition recorder is electrically connected with the voltage detection circuit, and the data transmission wire is electrically connected.

[0016] Preferably, the intelligent alarm device comprises an alarm device shell, a circuit board and a power supply, the circuit board and the power supply are arranged in the alarm device shell, a wire avoiding hole is formed in the alarm device shell, a plurality of wire plug-in interfaces are arranged on the circuit board, one end of the data transmission wire is provided with a plug-in head corresponding to the wire plug-in interface, and the data transmission wire is electrically connected with the circuit board through the wire plug-in interface.

[0017] (Three) beneficial effects

[0018] Compared with the prior art, the utility model provides an intelligent monitoring device for bridge reinforcement has the following beneficial effects:

[0019] 1、 this intelligent monitoring device for bridge reinforcement is provided with prestressed monitoring device and intelligent alarm device, can monitor bridge deck deformation and store transmission to external equipment with detection value, can detect bridge deck deformation condition to master bridge prestress change condition, evaluates bridge work performance under different load and environment, provides scientific basis for bridge maintenance, reinforcement, can find prestress loss and other abnormal phenomena in time and sends alarm information, can prevent larger accident, can improve bridge safety.

[0020] 2、 be provided with piezoelectric ceramic sheet and voltage detection circuit, through piezoelectric effect, detect the voltage variation of piezoelectric ceramic sheet, can detect bridge deck deformation condition to master bridge prestress change condition, evaluates bridge work performance under different load and environment, provides scientific basis for bridge maintenance, reinforcement.

[0021] 3、 Set up with intelligent alarm device, can collect and analyze the bridge prestress parameter monitored by prestress monitoring device, can send monitoring data to external equipment by using cellular network, can monitor data anomaly, can find abnormal phenomenon such as prestress loss in time, can send alarm information when data is abnormal, can prevent larger accidents, can improve bridge safety. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is overall structure schematic diagram of the present application;

[0023] Figure 2 It is embedded sensor structure schematic diagram of the present application;

[0024] Figure 3 It is sensor processing device and intelligent alarm device schematic diagram of the present application;

[0025] Figure 4 It is intelligent alarm device structure schematic diagram of the present application.

[0026] In the drawing: 1, prestress monitoring device;2, intelligent alarm device;3, embedded sensor;4, connecting wire;5, sensor processing device;6, embedded structure strip;7, piezoelectric ceramic sheet;8, fixed end;9, fixed hole;10, detector shell;11, fixed lug;12, data transmission wire;13, alarm device shell;14, circuit board;15, wire plug-in interface;16, power supply. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-4 The present application provides a technical scheme:

[0029] The utility model relates to an intelligent monitoring device for bridge reinforcement, characterized in that it comprises: a prestress monitoring device 1 arranged at the bottom of the bridge for monitoring the prestress deformation 13 of the bridge, the prestress monitoring device 1 comprising a pre-embedded sensor 3 and a sensor processing device 5, the pre-embedded sensor 3 being pre-embedded inside the bottom side of the bridge deck, the sensor processing device 5 being arranged at the bottom of the bridge near the pre-embedded sensor 3, one side of the pre-embedded sensor 3 being provided with a connecting lead 4, the pre-embedded sensor 3 and the sensor processing device 5 being electrically connected through the connecting lead 4, and an intelligent alarm device 2 arranged at the upper structure of the bridge for analyzing and processing the data transmitted by the prestress monitoring device 1 and giving an alarm according to the data.

[0030] Further, the pre-embedded sensor 3 comprises a pre-embedded structural strip 6, a piezoelectric ceramic sheet 7 and a fixed end 8, the pre-embedded structural strip 6 being arranged in the pre-embedded hole of the bridge, the two ends of the pre-embedded structural strip 6 being provided with the fixed end 8, a plurality of fixed holes 9 being formed in the fixed end 8, the pre-embedded structural strip 6 being fixed in the pre-embedded hole through a fixed pin, and the piezoelectric ceramic sheet 7 being arranged vertically downward on one side of the pre-embedded structural strip 6. The pre-embedded structural strip 6 serves as a structure for bearing the piezoelectric ceramic sheet 7, and when the bridge is deformed due to prestress, it will drive the pre-embedded structural strip 6 and the piezoelectric ceramic sheet 7 to deform, and the piezoelectric ceramic sheet 7 will generate an electric charge due to the piezoelectric effect, and the amount of the electric charge is proportional to the deformation.

[0031] Further, the sensor processing device 5 comprises a detector shell 10 and an internal detector electronic structure, a plurality of fixed lugs 11 being arranged on the detector shell 10, and the sensor processing device 5 being fixedly installed at the bottom of the bridge deck through the fixed lugs 11 and bolts. The sensor processing device 5 must be arranged near the pre-embedded sensor 3, and the connecting lead 4 needs to be as short as possible, so as to prevent the long line from affecting the detection accuracy.

[0032] Further, the detector electronic structure comprises a voltage detection circuit and a data acquisition recorder, the connecting lead 4 being electrically connected with the piezoelectric ceramic sheet 7, the other end of the connecting lead 4 being electrically connected with the voltage detection circuit, the data acquisition recorder being electrically connected with the voltage detection circuit, and a data transmission lead 12 being electrically connected. The voltage detection circuit detects the voltage fluctuation on the piezoelectric ceramic sheet 7, and the deformation condition can be fed back according to the fluctuation condition, and the data acquisition recorder is used for collecting and recording the detection data of the voltage detection circuit and sending the data to the intelligent alarm device 2 through the data transmission lead 12.

[0033] Further, the intelligent alarm device 2 comprises an alarm device shell 13, a circuit board 14 and a power supply 16, the circuit board 14 and the power supply 16 are arranged in the alarm device shell 13, a wire avoiding hole is formed on the alarm device shell 13, a plurality of wire plug-in interfaces 15 are arranged on the circuit board 14, one end of the data transmission wire 12 is provided with a plug-in head corresponding to the wire plug-in interface 15, and the data transmission wire 12 is electrically connected with the circuit board 14 through the wire plug-in interface 15. The intelligent alarm device 2 is usually fixedly installed on one side of the abutment or the bridge pier column, compared with the sensor processing device 5 which must be arranged near the pre-embedded sensor 3, the length of the data transmission wire 12 is limited smaller, the intelligent alarm device 2 can be arranged at a position far away from the pre-stress monitoring device 1, and the design of the plurality of wire plug-in interfaces 15 can make each intelligent alarm device 2 be equipped with a plurality of pre-stress monitoring devices 1, the monitoring data will be transmitted to the intelligent alarm device 2 for analysis and processing through the data transmission wire 12, and transmitted to the external equipment through the cellular network, and when the abnormal data is detected, the alarm information will be sent to the reserved alarm management personnel through the cellular network.

[0034] Structural description:

[0035] The pre-stress monitoring device 1 is used for monitoring the deformation of the bridge pre-stress, and is composed of the pre-embedded sensor 3 and the sensor processing device 5, and the pre-embedded sensor 3 and the sensor processing device 5 are electrically connected through the connecting wire 4;

[0036] The intelligent alarm device 2 is used for analyzing and processing the data transmitted by the pre-stress monitoring device 1 and alarming, and comprises the alarm device shell 13, the circuit board 14 and the power supply 16, and is electrically connected with the sensor processing device 5 of the pre-stress monitoring device 1 through the data transmission wire 12;

[0037] The pre-embedded sensor 3 is used for detecting the deformation of the bridge deck, and converts the deformation into an electric signal through the piezoelectric effect, and comprises the pre-embedded structure strip 6, the piezoelectric ceramic sheet 7 and the fixed end 8, is embedded in the inside of the bottom side of the bridge deck, and is electrically connected with the sensor processing device 5 through the connecting wire 4;

[0038] The connecting wire 4 is used for realizing the electric signal transmission between the pre-embedded sensor 3 and the sensor processing device 5, has a linear shape, and connects the pre-embedded sensor 3 and the sensor processing device 5;

[0039] The sensor processing device 5 is used for processing the electric signal transmitted by the pre-embedded sensor 3, collecting and recording data and transmitting, and comprises the detector shell 10 and the internal detector electronic structure, is fixed on the bottom of the bridge deck through the fixing lug 11 and the bolt, is connected with the pre-embedded sensor 3 through the connecting wire 4, and is connected with the intelligent alarm device 2 through the data transmission wire 12;

[0040] Embedded structure strip 6: the function is to bear piezoelectric ceramic sheet 7, with the bridge deformation piezoelectric ceramic sheet 7 deformation, the appearance is strip-shaped, set in the bridge embedded hole, both ends are connected with fixed end 8;

[0041] Piezoelectric ceramic sheet 7: the function is to use piezoelectric effect to convert bridge panel deformation into charge, and then generate voltage variation, the appearance is sheet-shaped, installed in the vertical downward side of embedded structure strip 6;

[0042] Fixed end 8: the function is to fix embedded structure strip 6 in embedded hole, the appearance is block-shaped, with multiple groups of fixed holes 9, located at both ends of embedded structure strip 6, fixed with bridge embedded hole through fixed pin and fixed hole 9;

[0043] Fixed hole 9: the function is to cooperate with fixed pin to fix fixed end 8 and embedded structure strip 6, the appearance is hole-shaped, set on fixed end 8;

[0044] Detector shell 10: the function is to protect the internal detector electronic structure, provided with multiple groups of fixed lug 11 for fixing sensor processing device 5;

[0045] Fixed lug 11: the function is to assist in fixing sensor processing device 5, the appearance is ear protrusion, set on detector shell 10, and the detector is fixed at the bottom of the bridge deck through bolt;

[0046] Data transmission wire 12: the function is to transmit the data collected and recorded by sensor processing device 5 to intelligent alarm device 2, the appearance is wire-shaped, one end is connected with data acquisition recorder of sensor processing device 5, and the other end is connected with wire insertion port 15 on circuit board 14 of intelligent alarm device 2 through plug connector;

[0047] Alarm device shell 13: the function is to protect internal circuit board 14 and power supply 16, the appearance is shell-shaped, provided with wire avoiding hole;

[0048] Circuit board 14: the function is to analyze and process the data transmitted by prestressed monitoring device 1, control alarm program, the appearance is board-shaped, set in alarm device shell 13, provided with multiple groups of wire insertion port 15 for connecting data transmission wire 12;

[0049] Wire insertion port 15: the function is to realize the electrical connection between data transmission wire 12 and circuit board 14, the appearance is interface-shaped, set on circuit board 14;

[0050] Power supply 16: the function is to provide power support for intelligent alarm device 2, the appearance is determined according to the specific power type, set in alarm device shell 13;

[0051] Working principle: One of the core components of the device is the prestress monitoring device 1, which is arranged at the bottom of the bridge. It is composed of a pre-embedded sensor 3 and a sensor processing device 5. The pre-embedded structure strip 6 of the pre-embedded sensor 3 is placed in the pre-embedded hole inside the bottom side of the bridge deck, and the fixed end 8 at both ends is fixed firmly through the fixed pin and fixed hole 9. The piezoelectric ceramic sheet 7 on the vertically downward side is the key element of the pre-embedded sensor 3, which works by using the piezoelectric effect. When the bridge deck deforms due to various factors such as vehicle load, temperature change, structural aging, etc., the piezoelectric ceramic sheet 7 will be subjected to pressure or tension. According to the piezoelectric effect, an electric charge proportional to the stress will be generated on its surface, thereby causing voltage variation. The sensor processing device 5 is installed near the pre-embedded sensor 3 at the bottom of the bridge and is electrically connected to the pre-embedded sensor 3 through the connecting wire 4. The detector electronic structure inside it includes a voltage detection circuit and a data acquisition recorder. The voltage detection circuit receives the voltage signal from the piezoelectric ceramic sheet 7 and converts it into a processable electrical signal. The data acquisition recorder is connected to the voltage detection circuit and is responsible for collecting, recording and storing these processed signals. At the same time, the data acquisition recorder also establishes a connection with external equipment through the data transmission wire 12, preparing to transmit data out. The intelligent alarm device 2 is arranged at the upper structure of the bridge, which includes an alarm device shell 13, a circuit board 14 and a power supply 16. The wire insertion port 15 on the circuit board 14 is connected with the data transmission wire 12, so as to receive data from the prestress monitoring device 1. The power supply 16 provides power support for the entire alarm device. When the bridge is working normally, the prestress monitoring device 1 continuously monitors the deformation of the bridge deck and converts the voltage variation signal generated by the piezoelectric ceramic sheet 7 into data, which is transmitted to the intelligent alarm device 2 through the data transmission wire 12. The circuit board 14 of the intelligent alarm device 2 analyzes and processes the received data. It compares the current data with the preset normal range to determine whether the bridge prestress is in a normal state. Once the monitoring data exceeds the preset range, such as detecting abnormal phenomena such as prestress loss, the intelligent alarm device 2 will immediately start the alarm program to remind the staff to check and maintain the bridge in time. With the help of communication means such as cellular network, the intelligent alarm device 2 sends the alarm information and monitoring data to the remote monitoring center or the mobile devices of relevant management personnel, ensuring that relevant personnel can understand the abnormal situation of the bridge in the first time, so as to take effective measures to prevent accidents and ensure the safe and stable operation of the bridge. This intelligent monitoring device realizes real-time monitoring, data processing and alarm functions of the bridge prestress through the cooperation of various components, provides a strong guarantee for the safe operation of the bridge, and greatly improves the scientificity and timeliness of bridge maintenance management.

[0052] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent monitoring device for bridge reinforcement, characterized in that, Include: Prestressed monitoring device (1) is arranged in the bottom of the bridge, is used for monitoring the prestressed deformation of the bridge, the prestressed monitoring device (1) includes embedded sensor (3) and sensor processing device (5), the embedded sensor (3) is embedded in the inside of the bottom side of the bridge deck, the sensor processing device (5) is arranged at the bottom of the bridge near the embedded sensor (3), one side of the embedded sensor (3) is provided with connecting lead (4), the embedded sensor (3) and sensor processing device (5) are electrically connected through connecting lead (4); Intelligent alarm device (2) is arranged at the upper structure of the bridge, is used for analyzing and processing the data transmitted by the prestressed monitoring device (1), and the alarm is carried out according to the data.

2. The intelligent monitoring device for bridge reinforcement according to claim 1, characterized in that: The embedded sensor (3) includes embedded structure strip (6), piezoelectric ceramic sheet (7) and fixed end (8), the embedded structure strip (6) is arranged in the embedded hole of the bridge, the embedded structure strip (6) is provided with fixed end (8) at both ends, a plurality of fixed holes (9) are formed in the fixed end (8), the embedded structure strip (6) is fixed in the embedded hole through the fixed pin, and the piezoelectric ceramic sheet (7) is vertically arranged on one side of the embedded structure strip (6) downward.

3. The intelligent monitoring device for bridge reinforcement according to claim 2, characterized in that: The sensor processing device (5) includes detector housing (10) and internal detector electronic structure, a plurality of fixed ears (11) are arranged on the detector housing (10), and the sensor processing device (5) is fixedly installed on the bottom of the bridge deck through the fixed ear (11) and bolt.

4. The intelligent monitoring device for bridge reinforcement according to claim 3, characterized in that: The detector electronic structure includes voltage detection circuit and data acquisition recorder, the connecting lead (4) is electrically connected with the piezoelectric ceramic sheet (7), the other end of the connecting lead (4) is electrically connected with the voltage detection circuit, the data acquisition recorder is electrically connected with the voltage detection circuit, and the data transmission lead (12) is electrically connected.

5. The intelligent monitoring device for bridge reinforcement according to claim 4, characterized in that: The intelligent alarm device (2) includes alarm device shell (13), circuit board (14) and power supply (16), the circuit board (14) and power supply (16) are arranged in the alarm device shell (13), the alarm device shell (13) is provided with wire avoiding hole, a plurality of wire plug-in interfaces (15) are arranged on the circuit board (14), one end of the data transmission lead (12) is provided with plug-in head corresponding to the wire plug-in interface (15), and the data transmission lead (12) is electrically connected with the circuit board (14) through the wire plug-in interface (15).

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