Intelligent Identification and Disconnection Monitoring Equipment and Monitoring Methods for Bridge Jacking Construction

Abstract

This invention provides an intelligent identification and detachment monitoring device and method for bridge jacking construction. The device includes a first contact switch (a spring displacement sensor) installed on one side of the supporting pier of a temporary pier. A jacking device is mounted on the temporary pier, and a second contact switch is installed on the piston rod of the lifting hydraulic cylinder within the jacking device. During the initialization phase of the jacking device, the first contact switch is depressed, and the second contact switch is disengaged. This enables unattended jacking construction without manual observation or process monitoring, reducing personnel requirements, ensuring construction quality, and increasing construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of bridge jacking construction, and in particular to an intelligent identification and detachment monitoring device and its monitoring method for bridge jacking construction. Background Technology

[0002] The incremental launching method is a bridge construction method in which precast beams are pushed forward segment by segment along the bridge axis at the bridgehead to get into place. Specifically, precast main beams such as steel trusses are precast in segments on a beam-casting platform behind the bridge abutment. Then, the steel trusses are pushed out (pulled out) segment by segment. The next steel truss is then precast on the empty beam-casting platform. This repeated construction method is called the incremental launching method.

[0003] In long-distance jacking construction, the separation of permanent and temporary piers from the bridge cannot be detected manually, leading to deviations in the separation and causing the bridge to bend during the jacking process. This requires extensive manual observation and process monitoring of the separation of permanent and temporary piers from the bridge, resulting in high personnel requirements, compromised construction quality, and low construction efficiency. Summary of the Invention

[0004] The main objective of this invention is to provide an intelligent identification and detachment monitoring device and its monitoring method for bridge jacking construction, which solves the problems of deviations in the separation of permanent and temporary piers from the bridge, resulting in bending of the bridge during the jacking process. This also addresses the issues of the need for extensive manual observation and process monitoring of the separation of permanent and temporary piers from the bridge, which leads to high personnel requirements, compromised construction quality, and low construction efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a bridge jacking construction intelligent identification and detachment monitoring device, wherein a first contact switch is set on one side of the support pier of the temporary pier, the first contact switch is a spring displacement sensor, a jacking device is set on the temporary pier, and a second contact switch is set on the piston rod of the lifting hydraulic cylinder in the jacking device. During the initialization phase of the jacking equipment, the first contact switch is in the depressed state and the second contact switch is in the disengaged state.

[0006] In the preferred embodiment, the first contact switch and the second contact switch are spring self-resetting displacement sensors.

[0007] In the preferred embodiment, a first bracket is provided on one side of the support pier, and the first contact switch is fixed to the first bracket by multiple nuts.

[0008] In the preferred embodiment, the jacking device includes a horizontally positioned jacking hydraulic cylinder and a vertically positioned jacking hydraulic cylinder. The cylinder body of the jacking hydraulic cylinder is connected to the temporary pier, the piston rod end of the jacking hydraulic cylinder is connected to the jacking hydraulic cylinder, the jacking hydraulic cylinder is slidably connected to the sliding plate on the upper surface of the temporary pier, and the piston rod ends of multiple jacking hydraulic cylinders are connected to the top plate.

[0009] In the preferred embodiment, a second bracket is provided on one side of the top plate, and the second contact switch is fixed to one side of the top plate by multiple nuts.

[0010] In the preferred embodiment, the lifting hydraulic cylinder is connected to the hydraulic valve seat, and the hydraulic valve seat is equipped with a pressure sensor. The pressure sensor monitors the pressure state of the lifting cylinder during the lifting process of a single lifting hydraulic cylinder.

[0011] In the preferred embodiment, a PLC controller is also provided on the temporary pier. The PLC controller is electrically connected to the controller of the lifting equipment and to the wireless transmitter. The first contact switch and the second contact switch are electrically connected to the wireless transmitter.

[0012] In the preferred embodiment, multiple wireless transmitters are connected to a wireless receiver, and the wireless receiver is electrically connected to the monitoring host.

[0013] In the preferred embodiment, displacement sensors are also provided at both ends of the top plate. The displacement sensors are wire displacement sensors, and the displacement wires of the displacement sensors are connected to the ground of the temporary pier. During the initialization phase of the jacking equipment, the displacement wires are perpendicular to the ground of the temporary pier.

[0014] The method includes: S1. Initialization phase of the jacking equipment: The lifting hydraulic cylinder of the jacking equipment retracts to the initial position. The lifting hydraulic cylinder and the jacking hydraulic cylinder are fully retracted. The first contact switch is in the pressed state and the second contact switch is in the disengaged state, in preparation for the subsequent jacking work. S2. During the stage where the jacking equipment is to be attached to the bridge beam surface, the jacking hydraulic cylinder of the jacking equipment begins to jack. The pressure sensor monitors the load of each cylinder, the displacement sensor monitors the cylinder movement, the second contact switch is in the disengaged state, and the first contact switch is in the attached state. S3. In the initial bonding stage between the jacking equipment and the bridge beam surface, the jacking hydraulic cylinder of the jacking equipment continues to lift so that the top plate contacts the bridge beam surface. The first contact switch and the second contact switch are both in the bonding state. The pressure sensor feeds back the initial bonding load signal. The jacking cylinder continues to lift. The pressure sensor feeds back the formal bonding load signal. The entire process is monitored by the wireless transmitter module and the PLC controller sending signals to the monitoring host. S4. When the temporary pier is completely separated from the beam surface, the jacking equipment continues to lift. The first contact switch is in the disengaged state, and the second contact switch is in the engaged state. When the load signal of the pressure sensor fluctuates within the range, it indicates that the temporary pier is completely separated from the beam surface. S5. During the stage of temporary pier and bridge beam surface contact, after the jacking is in place, the lifting hydraulic cylinder of the jacking equipment begins to descend. This process is the opposite of the jacking process. During the process of descending the bridge beam surface and contacting the temporary pier, before the force conversion occurs, the second contact switch is in the contact state. When the pressure value drops to the set value, the first contact switch is in the contact state, which means that the temporary pier and the beam surface are completely in contact. S6. During the stage of separating the jacking equipment from the bridge beam surface, the lifting hydraulic cylinder of the jacking equipment continues to descend. When the second contact switch is in the disengaged state, the first contact switch is in the depressed state, and the load of the pressure sensor is 0, it means that the equipment is completely separated from the beam surface. S7. Repeat the jacking process from S2 to S6 to complete the jacking construction; S8. During the initialization phase of the jacking equipment, the displacement wire of the displacement sensor is perpendicular to the temporary pier. S8. When the lifting hydraulic cylinder lifts the bridge, the top plate drives the displacement sensor to rise and pull the displacement cable, so that the displacement sensor generates displacement data. When the lifting hydraulic cylinder retracts, the displacement cable of the displacement sensor is retracted, and the displacement sensor generates displacement data. The displacement data is transmitted to the monitoring host. The monitoring host compares the displacement data with the first contact switch and the second contact switch to detect the bridge detachment data.

[0015] This invention provides an intelligent identification and detachment monitoring device and method for bridge jacking construction. It utilizes a first contact switch and a second contact switch to monitor the separation of the bridge from the temporary pier. During the initialization phase of the jacking equipment, the first contact switch is depressed, and the second contact switch is disengaged. When the temporary pier is completely detached from the beam surface, the jacking equipment continues to lift, the first contact switch remains disengaged, and the second contact switch remains engaged. Once the load signal from the pressure sensor fluctuates within a certain range, it indicates that the temporary pier has completely detached from the beam surface. This achieves unattended jacking construction without manual observation or process monitoring, reducing personnel requirements, ensuring construction quality, and increasing construction efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the initialization phase of the jacking device of the present invention; Figure 3 This is a schematic diagram of the jacking device of the present invention detaching from the jacking mechanism; Figure 4 This is a schematic diagram of the jacking device of the present invention for jacking separation and displacement wire detection.

[0017] In the diagram: 1. Bridge; 2. Temporary pier; 3. Permanent pier; 4. Support pier base; 5. PLC controller; 6. Monitoring host; 7. Wireless receiver; 8. Wireless transmitter; 9. First support; 10. First contact switch; 11. Displacement sensor; 12. Displacement cable; 13. Hydraulic valve seat; 14. Top plate; 15. Second support; 16. Second contact switch; 17. Sliding plate; 18. Pressure sensor; 19. Lifting hydraulic cylinder; 20. Fixed head; 21. Pushing hydraulic cylinder. Detailed Implementation

[0018] Example 1 like Figures 1-4 As shown, a smart identification and detachment monitoring device for bridge jacking construction includes a first contact switch 10, which is a spring displacement sensor, installed on one side of the support pier 4 of the temporary pier 2. A jacking device is installed on the temporary pier 2, and a second contact switch 16 is installed on the piston rod of the lifting hydraulic cylinder 19 within the jacking device. During the initialization phase of the jacking device, the first contact switch 10 is in a depressed state, and the second contact switch 16 is in a disengaged state. The separation of the bridge from the temporary pier 2 is monitored using the first and second contact switches 10 and 16. During the initialization phase, the first contact switch 10 is in a depressed state, and the second contact switch 16 is in a disengaged state. When the temporary pier is completely detached from the beam surface, the jacking device continues to lift, the first contact switch 10 remains disengaged, and the second contact switch 16 remains engaged. Once the load signal of the pressure sensor 18 fluctuates within a certain range, it indicates that the temporary pier is completely detached from the beam surface. The installation of the first and second contact switches 10 and 16 does not interfere with the jacking of the beam.

[0019] In the preferred embodiment, the first contact switch 10 and the second contact switch 16 are spring-loaded self-resetting displacement sensors. These spring-loaded self-resetting displacement sensors facilitate measurement during the stage when the temporary pier is completely separated from the beam surface, ensuring overall structural stability and accurate data.

[0020] In the preferred embodiment, a first bracket 9 is provided on one side of the support pier 4, and the first contact switch 10 is fixed to the first bracket 9 by multiple nuts. The first bracket 9 is used to install the first contact switch 10.

[0021] In the preferred embodiment, the jacking device includes a horizontally positioned jacking hydraulic cylinder 21 and a vertically positioned lifting hydraulic cylinder 19. The cylinder body of the jacking hydraulic cylinder 21 is connected to the temporary pier 2, and the end of the piston rod of the jacking hydraulic cylinder 21 is connected to the lifting hydraulic cylinder 19. The lifting hydraulic cylinder 19 is slidably connected to the sliding plate 17 on the upper surface of the temporary pier 2, and the ends of the piston rods of the multiple lifting hydraulic cylinders 19 are connected to the top plate 14. The vertical lifting hydraulic cylinder 19 of the jacking device lifts the bridge 1, and the jacking hydraulic cylinder 21 pushes the lifting hydraulic cylinder 19 to achieve the jacking of the bridge 1.

[0022] In the preferred embodiment, a second bracket 15 is provided on one side of the top plate 14, and the second contact switch 16 is fixed to one side of the top plate 14 by multiple nuts. The second bracket 15 is used to install the second contact switch 16.

[0023] In the preferred embodiment, the lifting hydraulic cylinder 19 is connected to the hydraulic valve seat 13. The hydraulic valve seat 13 is equipped with a pressure sensor 18, which monitors the pressure state of the lifting cylinder 19 during its lifting state. Four pressure sensors 18 are located on the valve seat of the hydraulic system, each measuring the pressure state of the lifting cylinder during the lifting state.

[0024] In the preferred embodiment, a PLC controller 5 is also installed on the temporary pier 2. The PLC controller 5 is electrically connected to the controller of the jacking equipment and to the wireless transmitter 8. The first contact switch 10 and the second contact switch 16 are also electrically connected to the wireless transmitter 8. Multiple wireless transmitters 8 are connected to wireless receivers 7, and the wireless receivers 7 are electrically connected to the monitoring host 6. The monitored data is transmitted to the monitoring host 6, which detects the bridge jacking detachment.

[0025] In the preferred embodiment, displacement sensors 11 are also provided at both ends of the top plate 14. The displacement sensors 11 are wire displacement sensors, and the displacement wires 12 of the displacement sensors 11 are connected to the ground of the temporary pier 2. During the initialization phase of the jacking equipment, the displacement wires 12 are perpendicular to the ground of the temporary pier 2. The displacement sensors 11 are located on the side of the jacking cylinder and are used to detect the lifting height of the jacking cylinder.

[0026] Example 2 Further explanation based on Example 1, such as Figures 1-4 As shown, during the initialization phase of the jacking equipment, the lifting hydraulic cylinder 19 of the jacking equipment retracts to its initial position, and the lifting hydraulic cylinder 19 and the jacking hydraulic cylinder 21 are fully retracted. The first contact switch 10 is in the depressed state, and the second contact switch 16 is in the disengaged state, in preparation for the subsequent jacking operation.

[0027] During the stage when the jacking equipment is to be attached to the beam surface of bridge 1, the jacking hydraulic cylinder 19 of the jacking equipment starts to jack, the pressure sensor 18 monitors the load of each cylinder, the displacement sensor 11 monitors the cylinder movement, the second contact switch 16 is in the disengaged state, and the first contact switch 10 is in the attached state.

[0028] During the initial bonding stage between the jacking equipment and the beam surface of bridge 1, the jacking hydraulic cylinder 19 of the jacking equipment continues to lift so that the top plate 14 contacts the beam surface of bridge 1. The first contact switch 10 and the second contact switch 16 are both in the bonding state. The pressure sensor 18 feeds back the initial bonding load signal. The jacking cylinder continues to lift, and the pressure sensor 18 feeds back the formal bonding load signal. The entire process is monitored by the wireless transmitter module 8 and the PLC controller 5, which send signals to the monitoring host 6.

[0029] During the stage when the temporary pier is completely separated from the beam surface, the jacking equipment continues to jack up. The first contact switch 10 is in the disengaged state, and the second contact switch 16 is in the engaged state. When the load signal of the pressure sensor 18 fluctuates within the range, it indicates that the temporary pier is completely separated from the beam surface.

[0030] During the stage of temporary pier 2 and bridge 1 beam surface contact, after the jacking is in place, the jacking hydraulic cylinder 19 of the jacking equipment begins to descend. This process is the opposite of the jacking process. During the process of descending bridge 1 beam surface and temporary pier 2 contacting each other before the force conversion occurs, the second contact switch 16 is in the contact state. When the pressure value drops to the set value, the first contact switch 10 is in the contact state, which means that the temporary pier and the beam surface are completely in contact.

[0031] During the stage of detachment of the jacking equipment from the bridge beam surface, the lifting hydraulic cylinder 19 of the jacking equipment continues to descend. When the second contact switch 16 is in the disengaged state, the first contact switch 10 is in the depressed state, and the load of the pressure sensor 18 is 0, it means that the equipment is completely detached from the beam surface.

[0032] Repeat the above jacking process to complete the jacking construction.

[0033] During the initialization phase of the jacking equipment, the displacement wire 12 of the displacement sensor 11 is perpendicular to the temporary pier 2.

[0034] When the lifting hydraulic cylinder 19 lifts the bridge 1, the top plate 14 drives the displacement sensor 11 to rise and pull the displacement cable 12, so that displacement data is generated inside the displacement sensor 11. When the lifting hydraulic cylinder 19 retracts, the displacement cable 12 of the displacement sensor 11 is retracted, and displacement data is generated inside the displacement sensor 11. The displacement data is transmitted to the monitoring host 6. The monitoring host 6 compares the displacement data with the first contact switch 10 and the second contact switch 16 to detect the data of the bridge 1 being disengaged.

[0035] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A monitoring method for intelligent identification and disengagement monitoring equipment during bridge jacking construction, characterized by: The structure of the monitoring equipment is as follows: a first contact switch (10) is set on one side of the support pier (4) of the temporary pier (2). The first contact switch (10) is a spring displacement sensor. A jacking device is set on the temporary pier (2). A second contact switch (16) is set on the piston rod of the lifting hydraulic cylinder (19) in the jacking device. During the initialization phase of the jacking device, the first contact switch (10) is in the depressed state and the second contact switch (16) is in the disengaged state; The first contact switch (10) and the second contact switch (16) are spring self-resetting displacement sensors; The lifting hydraulic cylinder (19) is connected to the hydraulic valve seat (13). The hydraulic valve seat (13) is equipped with a pressure sensor (18). The pressure sensor (18) monitors the pressure state of the lifting cylinder in the lifting state of a single lifting hydraulic cylinder (19). A first bracket (9) is provided on one side of the support pier (4), and a first contact switch (10) is fixed on the first bracket (9) by multiple nuts; The jacking equipment includes a horizontally placed jacking hydraulic cylinder (21) and a vertically placed jacking hydraulic cylinder (19). The cylinder body of the jacking hydraulic cylinder (21) is connected to the temporary pier (2). The piston rod end of the jacking hydraulic cylinder (21) is connected to the jacking hydraulic cylinder (19). The jacking hydraulic cylinder (19) is slidably connected to the sliding plate (17) on the upper surface of the temporary pier (2). The piston rod ends of multiple jacking hydraulic cylinders (19) are connected to the top plate (14). Displacement sensors (11) are also provided at both ends of the top plate (14). The displacement sensors (11) are pull-wire displacement sensors. The displacement pull wire (12) of the displacement sensor (11) is connected to the ground of the temporary pier (2). During the initialization stage of the jacking equipment, the displacement pull wire (12) is perpendicular to the ground of the temporary pier (2). The method includes: S1. During the initialization phase of the jacking equipment, the lifting hydraulic cylinder (19) and the jacking hydraulic cylinder (21) are fully retracted, the first contact switch (10) is in the pressed state, and the second contact switch (16) is in the disengaged state, in preparation for the subsequent jacking work. S2, jacking equipment and bridge (1) When the beam surface is to be bonded, the jacking hydraulic cylinder (19) of the jacking equipment starts to lift, the pressure sensor (18) monitors the load of each cylinder, the displacement sensor (11) monitors the cylinder action, the second contact switch (16) is in the disengaged state, and the first contact switch (10) is in the bonded state. S3. During the initial bonding stage between the jacking equipment and the bridge (1) beam surface, the jacking hydraulic cylinder (19) of the jacking equipment continues to jack up so that the top plate (14) contacts the bridge (1) beam surface. The first contact switch (10) and the second contact switch (16) are both in the bonding state. The pressure sensor (18) feeds back the initial bonding load signal. The jacking cylinder continues to jack up. The pressure sensor (18) feeds back the formal bonding load signal. The entire process is monitored by the wireless transmitter (8) module and the PLC controller (5) sending the signal to the monitoring host (6). S4. When the temporary pier is completely separated from the beam surface, the jacking equipment continues to jack up. The first contact switch (10) is in the disengaged state, and the second contact switch (16) is in the engaged state. When the load signal of the pressure sensor (18) floats within the range, it indicates that the temporary pier is completely separated from the beam surface. S5. During the stage of temporary pier (2) and bridge (1) beam surface contact, after the jacking is in place, the jacking hydraulic cylinder (19) of the jacking equipment begins to descend. This process is the opposite of the jacking process. During the process of descending the bridge (1) beam surface and temporary pier (2) contacting each other before the force conversion occurs, the second contact switch (16) is in the contact state. When the pressure value drops to the set value, the first contact switch (10) is in the contact state, which means that the temporary pier and the beam surface are completely in contact. S6. During the stage of separation between the jacking equipment and the bridge (1) beam surface, the jacking hydraulic cylinder (19) of the jacking equipment continues to descend. When the second contact switch (16) is in the disengaged state, the first contact switch (10) is in the depressed state, and the load of the pressure sensor (18) is 0, it means that the equipment is completely separated from the beam surface. S7. Repeat the jacking process from S2 to S6 to complete the jacking construction; S8. During the initialization phase of the jacking equipment, the displacement wire (12) of the displacement sensor (11) is perpendicular to the temporary pier (2). S8. When the lifting hydraulic cylinder (19) lifts the bridge (1), the top plate (14) drives the displacement sensor (11) to rise and pull the displacement cable (12), so that displacement data is formed inside the displacement sensor (11). When the lifting hydraulic cylinder (19) retracts, the displacement cable (12) of the displacement sensor (11) is retracted, and displacement data is formed inside the displacement sensor (11). The displacement data is transmitted to the monitoring host (6). The monitoring host (6) compares the displacement data with the first contact switch (10) and the second contact switch (16) to detect the data of the bridge (1) disengaging.

2. The observation method for the intelligent identification and disengagement monitoring equipment during bridge jacking construction according to claim 1, characterized in that: A second bracket (15) is provided on one side of the top plate (14), and a second contact switch (16) is fixed to one side of the top plate (14) by multiple nuts.

3. The observation method for the intelligent identification and disengagement monitoring equipment during bridge jacking construction according to claim 1, characterized in that: The temporary pier (2) is also equipped with a PLC controller (5), which is electrically connected to the controller of the lifting equipment. The PLC controller (5) is electrically connected to the wireless transmitter (8), and the first contact switch (10) and the second contact switch (16) are electrically connected to the wireless transmitter (8).

4. The observation method for intelligent identification and disengagement monitoring equipment during bridge jacking construction according to claim 3, characterized in that: Multiple wireless transmitters (8) are connected to a wireless receiver (7), and the wireless receiver (7) is electrically connected to the monitoring host (6).

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