A Smart Prestressed Strengthening System for Tube Segments Based on Shape Memory Alloy

Abstract

This invention discloses an intelligent prestressed reinforcement system for tunnel segments based on shape memory alloys, relating to the field of structural reinforcement. It includes three sets of prestressed reinforcement units arranged side-by-side. Each set includes a fiberglass plate, with a first fixing block and a second fixing block installed at both ends of the fiberglass plate. The first and second fixing blocks are respectively installed on two adjacent tunnel segments. A clamping device and an intelligent control device are provided on the first fixing block, and the fiberglass plate is clamped to the clamping device, which is electrically connected to the intelligent control device. A power supply for the intelligent control device is installed on the first fixing block of the middle set of prestressed reinforcement units in the middle set. This invention is applicable to the reinforcement and repair of complex structures such as arched bridges and tunnels, effectively enhancing the strength and durability of the structure, and has broad application prospects, providing a new solution for the field of structural reinforcement.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of structural reinforcement, and particularly relates to an intelligent segment prestressed reinforcement system based on shape memory alloy. BACKGROUND

[0002] With the acceleration of urbanization and the continuous advancement of infrastructure construction, the safety and durability of structures such as bridges and tunnels have attracted increasing attention. Traditional structural reinforcement methods, such as concrete reinforcement and steel plate reinforcement, have the disadvantages of complex construction, long construction period, and significant impact on the appearance of the structure. In addition, these methods are more difficult to implement when dealing with complex structural surfaces, such as curved bridges and tunnels, and are difficult to achieve uniform reinforcement of the structure.

[0003] In recent years, the application of smart materials in the field of structural reinforcement has gradually attracted attention. Shape memory alloy is a kind of smart material with shape memory effect, which can restore its original shape at a specific temperature. By utilizing this characteristic of shape memory alloy, prestressed reinforcement of the structure can be achieved. However, existing reinforcement systems based on shape memory alloy are mostly manually operated, lacking intelligent and automated control means, resulting in low construction efficiency and difficulty in achieving real-time monitoring and adjustment of reinforcement effect.

[0004] In addition, existing systems also have deficiencies in temperature control and strain monitoring, which cannot effectively ensure that the heating temperature of the shape memory alloy and the applied prestress meet the design requirements, thereby affecting the stability and reliability of the reinforcement effect. Therefore, it is of great practical significance and application value to develop an intelligent and automated intelligent segment prestressed reinforcement system based on shape memory alloy to improve construction efficiency and reinforcement effect. SUMMARY

[0005] The purpose of the present application is to provide an intelligent segment prestressed reinforcement system based on shape memory alloy, which solves the problem of insufficient stability and reliability of the reinforcement system.

[0006] To solve the above technical problems, the present application adopts the following technical solutions:

[0007] The present application provides an intelligent segment prestressed reinforcement system based on shape memory alloy, which comprises three groups of prestressed reinforcement units arranged side by side, each group of the prestressed reinforcement units comprises a glass steel plate, the two ends of the glass steel plate are respectively provided with a first fixed block and a second fixed block, and the first fixed block and the second fixed block are respectively installed on two adjacent segments.

[0008] The first fixed block is provided with a clamping device and an intelligent control device, the glass steel plate is clamped on the clamping device, and the clamping device and the intelligent control device are electrically connected.

[0009] The three intelligent control devices on the first fixed blocks are electrically connected together in sequence;

[0010] The first fixing block of the prestressed reinforcement unit in the middle group of the three groups arranged side by side is equipped with a power supply for the intelligent control device.

[0011] Optionally, the clamping device includes an upper clamping plate, a lower clamping plate, and a connecting clamping plate;

[0012] Multiple shape memory alloy pieces are connected through the positioning groove of the first fixing block. The upper clamp and the lower clamp are clamped on the exposed ends of the multiple shape memory alloy pieces. The inner ends of the shape memory alloy pieces are positioned by the connecting clamp. The inner ends of the shape memory alloy pieces and one end of the fiberglass plate are clamped between the connecting clamp and the first fixing block. The connecting clamp is locked to the first fixing block by bolts.

[0013] Optionally, the intelligent control device includes: a control chip, a strain acquisition module, a relay module, and a temperature control module. The control chip is electrically connected to the strain acquisition module, the relay module, and the temperature control module, respectively, and the power supply provides power to the control chip, the strain acquisition module, the relay module, and the temperature control module, respectively.

[0014] Optionally, the control chip is wirelessly connected to a smart terminal, which may include a mobile phone and / or a computer.

[0015] Optionally, the strain acquisition module is electrically connected to the strain gauges, and multiple strain gauges are provided and evenly distributed on the fiberglass plate.

[0016] Optionally, the relay module includes multiple relays, each of which is electrically connected to a shape memory alloy to enable independent energization and heating control of different shape memory alloys; the relays are electrically connected to the shape memory alloys via relay connection lines.

[0017] Optionally, the temperature control module is electrically connected to the shape memory alloy via a shape memory alloy heating connection wire. The temperature control module is used to monitor the temperature of the shape memory alloy in real time and feed the temperature back to the control chip.

[0018] Optionally, the power supply is electrically connected to the overload protector, and the power supply supplies power to the intelligent control device through the overload protector.

[0019] Optionally, the intelligent control device on the first fixing block of the prestressed reinforcement unit in the middle group is electrically connected to the intelligent control device on the first fixing block of the prestressed reinforcement unit in the left group via the left end structural connection line, and the intelligent control device on the first fixing block of the prestressed reinforcement unit in the middle group is electrically connected to the intelligent control device on the first fixing block of the prestressed reinforcement unit in the right group via the right end structural connection line.

[0020] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0021] The control chip of this invention receives strain data from the strain acquisition module and temperature data from the temperature control module. Based on preset control logic, it controls the relay module to electrically heat the shape memory alloy, causing it to generate a shape memory effect and applying prestress to fix and reinforce the fiberglass plate. Through a smart terminal, users can view the system's operating status and reinforcement effect in real time, and perform remote control and adjustments, improving the intelligence and flexibility of construction.

[0022] This invention enables intelligent control and remote management of the reinforcement process through wireless connection between the control chip and the smart terminal, improving construction efficiency and flexibility, and reducing the workload and construction time of on-site construction personnel.

[0023] This invention is applicable to the reinforcement and repair of complex structures such as arched bridges and tunnels. It can effectively enhance the strength and durability of the structure and has broad application prospects, providing a new solution for the field of structural reinforcement. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of the intelligent prestressed reinforcement system for tunnel segments based on shape memory alloys according to the present invention;

[0026] Figure 2 This is an enlarged schematic diagram of the first fixed block side connection structure of the three sets of prestressed reinforcement systems of the present invention. Figure One ;

[0027] Figure 3 This is an enlarged schematic diagram of the first fixed block side connection structure of the three sets of prestressed reinforcement systems of the present invention. Figure Two ;

[0028] Figure 4 This is a schematic diagram of the first fixing block structure of the intermediate group of the present invention;

[0029] Figure 5 This is a schematic diagram of the first fixing block structure of the left end group of the present invention;

[0030] Figure 6 This is a schematic diagram of the first fixing block structure of the right end group of the present invention;

[0031] Figure 7 This is a schematic diagram of the connecting clip installation structure of the present invention;

[0032] Figure 8 This is a schematic diagram illustrating the working principle of the control chip of this invention.

[0033] Explanation of reference numerals in the attached drawings: 1. Upper clamping plate; 2. Shape memory alloy; 3. Lower clamping plate; 4. Shape memory alloy heating connecting wire; 5. Control chip; 6. Temperature control module; 7. Strain acquisition module; 8. Left end structural connection line; 9. Relay connection line; 10. Right end structural connection line; 11. Strain gauge; 12. Power supply; 13. Relay module; 14. Tube segment; 15. Connecting clamping plate; 16. Fiberglass plate; 16-1. First fixing block; 16-2. Second fixing block. Detailed Implementation

[0034] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] like Figures 1-8 As shown, a smart prestressed reinforcement system for tunnel segments based on shape memory alloy includes three sets of prestressed reinforcement units arranged in parallel. Each set of prestressed reinforcement units includes a fiberglass plate 16. A first fixing block 16-1 and a second fixing block 16-2 are respectively installed at both ends of the fiberglass plate 16. The first fixing block 16-1 and the second fixing block 16-2 are respectively installed on two adjacent tunnel segments 14.

[0036] The first fixing block 16-1 is provided with a clamping device and an intelligent control device. The fiberglass plate 16 is clamped on the clamping device, and the clamping device and the intelligent control device are electrically connected.

[0037] The three intelligent control devices on the first fixing block 16-1 are electrically connected together in sequence;

[0038] A power supply 12 for powering the intelligent control device is installed on the first fixing block 16-1 of the middle group of the three groups of prestressed reinforcement units arranged side by side.

[0039] In practice, the three first fixing blocks 16-1 of the three sets of prestressed reinforcement units arranged side by side are installed on the same segment 14, and the three second fixing blocks 16-2 of the three sets of prestressed reinforcement units arranged side by side are also installed on the adjacent same segment 14.

[0040] Specifically, the clamping device includes an upper clamping plate 1, a lower clamping plate 3, and a connecting clamping plate 15;

[0041] Multiple shape memory alloy pieces 2 are connected through the positioning groove of the first fixing block 16-1. The upper clamping piece 1 and the lower clamping piece 3 are clamped to the exposed ends of the multiple shape memory alloy pieces 2. The inner ends of the shape memory alloy pieces 2 are positioned by the connecting clamping piece 15. The inner ends of the shape memory alloy pieces 2 and one end of the fiberglass plate 16 are clamped between the connecting clamping piece 15 and the first fixing block 16-1. The connecting clamping piece 15 is locked to the first fixing block 16-1 by bolts.

[0042] The connecting clip 15 is used to connect the shape memory alloy 2 to the fiberglass plate 16 to ensure the effective application of prestress.

[0043] In a specific implementation, a connecting clip 15 is also provided on the second fixing block 16-2. The other end of the fiberglass plate 16 is clamped between the connecting clip 15 and the second fixing block 16-2. The connecting clip 15 is locked to the second fixing block 16-2 by bolts.

[0044] Specifically, the intelligent control device includes: a control chip 5, a strain acquisition module 7, a relay module 13, and a temperature control module 6. The control chip 5 is electrically connected to the strain acquisition module 7, the relay module 13, and the temperature control module 6, respectively. The power supply 12 supplies power to the control chip 5, the strain acquisition module 7, the relay module 13, and the temperature control module 6, respectively.

[0045] Specifically, in one embodiment, the control chip 5, strain acquisition module 7, relay module 13 and temperature control module 6 are positioned and installed at the front end of the first fixing block 16-1, and the clamping device is installed inside the first fixing block 16-1, wherein the first fixing block 16-1 is provided with a groove for installing the clamping device.

[0046] Among them, the control chip 5 collects the strain of the fiberglass plate 16 through the strain acquisition module 7, thereby determining whether the strain meets the reinforcement requirements.

[0047] Specifically, the control chip 5 is wirelessly connected to a smart terminal, which includes a mobile phone and / or a computer, to enable remote data transmission and control.

[0048] Specifically, the strain acquisition module 7 is electrically connected to the strain gauge 11, and multiple strain gauges 11 are provided and evenly distributed on the fiberglass plate 16 to achieve accurate monitoring of the strain state of the fiberglass plate 16.

[0049] Specifically, the relay module 13 includes multiple relays, each of which is electrically connected to a shape memory alloy 2 to enable independent energization and heating control of different shape memory alloys 2; the relays are electrically connected to the shape memory alloys 2 via relay connection lines 9.

[0050] Specifically, the temperature control module 6 is electrically connected to the shape memory alloy 2 via the shape memory alloy heating connection wire 4. The temperature control module 6 is used to monitor the temperature of the shape memory alloy 2 in real time and feed the temperature back to the control chip 5.

[0051] Specifically, the power supply 12 is electrically connected to an overload protector, and the power supply 12 supplies power to the intelligent control device through the overload protector to prevent damage to the system under overload conditions.

[0052] Among them, the power supply 12 is a high-power small power supply used to provide a stable and reliable current for the energization and heating of the shape memory alloy 2.

[0053] In actual operation, before construction, the system is initialized, and the control chip 5 is loaded with preset control logic and parameters to ensure that each module works normally. According to the preset control logic, the control chip 5 controls the relay module 13 to energize and heat the shape memory alloy 2. During heating, the shape memory alloy 2 generates a shape memory effect, shrinking and applying prestress to fix the fiberglass plate 16. The temperature control module 6 monitors the temperature change of the shape memory alloy 2 in real time to ensure that its heating temperature is within a safe range and adjusts the energizing current as needed to ensure stable application of prestress. The strain acquisition module 7 transmits the monitored strain data of the fiberglass plate 16 to the control chip 5. The control chip 5 judges the prestressing effect based on the strain data and adjusts the energizing state of the relay module 13 as needed to optimize the reinforcement effect. During construction, users can adjust the system parameters through the receiving terminal as needed to optimize the prestressing effect and the system's operating performance.

[0054] Working principle:

[0055] Before construction, all components of the system are installed and initialized. Control chip 5 loads preset control logic and parameter settings to ensure each module functions correctly. Strain gauges 11 of strain acquisition module 7 are installed on fiberglass plate 16 to accurately monitor its strain state and determine if it meets design requirements. Control chip 5 sends strain information to a smart terminal (mobile phone). If the strain does not meet reinforcement requirements, control chip 5 continues to monitor the strain state of fiberglass plate 16. If the strain meets reinforcement requirements, control chip 5, according to preset control logic, controls relay module 13 to energize and heat shape memory alloy 2. During heating, shape memory alloy 2 generates a shape memory effect, shrinking and applying prestress to fix fiberglass plate 16. Temperature control module 6 monitors the temperature change of shape memory alloy 2 in real time to ensure its heating temperature is within a safe range and adjusts the energizing current as needed to ensure stable application of prestress. Users can view the system's operating status and reinforcement effect in real time through a smart terminal (such as a mobile phone) and perform remote control and adjustments, improving the intelligence and flexibility of construction.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A shape memory alloy based smart segment prestress reinforcement system, characterized in that: It comprises three groups of prestressed reinforcement units arranged side by side, each group of the prestressed reinforcement units comprises a glass steel plate (16), the two ends of the glass steel plate (16) are respectively provided with a first fixed block (16-1) and a second fixed block (16-2), the first fixed block (16-1) and the second fixed block (16-2) are respectively arranged on two adjacent pipe segments (14); The first fixed block (16-1) is provided with a clamping device and an intelligent control device, the glass steel plate (16) is clamped on the clamping device, and the clamping device and the intelligent control device are electrically connected; The intelligent control devices on the three first fixed blocks (16-1) are sequentially electrically connected together; The first fixed block (16-1) in the middle group of the prestressed reinforcement units is provided with a power supply (12) for supplying power to the intelligent control device; The clamping device comprises an upper clamping piece (1), a lower clamping piece (3) and a connecting clamping piece (15); A plurality of shape memory alloys (2) are connected in the positioning groove of the first fixed block (16-1), the upper clamping piece (1) and the lower clamping piece (3) are clamped on the exposed ends of the plurality of shape memory alloys (2), the inner side end of the shape memory alloy (2) is positioned through the connecting clamping piece (15), the inner side end of the shape memory alloy (2) and one end of the glass steel plate (16) are clamped between the connecting clamping piece (15) and the first fixed block (16-1), and the connecting clamping piece (15) is locked on the first fixed block (16-1) through a bolt; The intelligent control device comprises a control chip (5), a strain acquisition module (7), a relay module (13) and a temperature control module (6), the control chip (5) is electrically connected with the strain acquisition module (7), the relay module (13) and the temperature control module (6), and the power supply (12) supplies power to the control chip (5), the strain acquisition module (7), the relay module (13) and the temperature control module (6).

2. The shape memory alloy based smart segment pre-stressing reinforcement system according to claim 1, characterized in that: The control chip (5) is wirelessly connected with an intelligent terminal, and the intelligent terminal comprises a mobile phone and / or a computer.

3. The shape memory alloy based smart segment pre-stressing reinforcement system according to claim 1, wherein: The strain acquisition module (7) is electrically connected with a strain gauge (11), and a plurality of strain gauges (11) are evenly arranged on the glass steel plate (16).

4. The shape memory alloy based smart segment pre-stressing reinforcement system according to claim 1, wherein: The relay module (13) comprises a plurality of relays, each of the relays is electrically connected with a shape memory alloy (2) so as to realize independent power heating control of different shape memory alloys (2); and the relay is electrically connected with the shape memory alloy (2) through a relay connection line (9).

5. The shape memory alloy based smart segment pre-stressing reinforcement system according to claim 1, wherein: The temperature control module (6) is electrically connected with the shape memory alloy (2) through a shape memory alloy heating connection lead (4), and the temperature control module (6) is used for monitoring the temperature of the shape memory alloy (2) in real time and feeding back the temperature to the control chip (5).

6. The shape memory alloy based smart segment pre-stressing reinforcement system according to claim 1, wherein: The power supply (12) is electrically connected with an overload protector, and the power supply (12) supplies power to the intelligent control device through the overload protector.

7. The shape memory alloy based smart segment pre-stressing reinforcement system according to claim 1, wherein: The intelligent control device on the first fixed block (16-1) in the prestressed reinforcement unit of the middle group is electrically connected with the intelligent control device on the first fixed block (16-1) in the prestressed reinforcement unit of the left end group through a left end structure connecting line (8), and the intelligent control device on the first fixed block (16-1) in the prestressed reinforcement unit of the middle group is electrically connected with the intelligent control device on the first fixed block (16-1) in the prestressed reinforcement unit of the right end group through a right end structure connecting line (10).

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