Cross-railway bridge construction monitoring method

Abstract

The invention discloses a cross-railway bridge construction monitoring method. The monitoring method comprises a deformation monitoring method, a settlement monitoring method, a stress monitoring method, a monitoring method and a communication control method. The settlement monitoring method comprises the steps that scale marks are arranged at the lower end of a supporting column and used for monitoring settlement changes of the supporting column; the stress monitoring method comprises the steps that a bridge body comprises a bridge support and a bridge floor, and a plurality of stress sensors are arranged on each of the bridge support and the bridge floor; the monitoring method comprises the following steps: arranging a vertical frame on a bridge floor, and arranging camera equipment on the vertical frame.

Description

Technical Field

[0001] The invention relates to the field of bridge rotation construction, and in particular to a construction monitoring method for a railway bridge. Background Art

[0002] With the rapid development of urban transportation in my country, road grade separation has become an inevitable trend. Especially when building new bridges above existing highways and railways, the construction process is not only restricted by the traffic operation of existing lines, but also poses a great risk to the safety of existing lines. For this reason, the construction technology of rotating bridges came into being and has developed rapidly in recent years. Its core technology has become a key factor in ensuring project quality and construction safety. Bridge rotation construction can greatly reduce the amount of high-altitude operations, reduce the difficulty of construction, reduce interference with traffic below, and improve construction efficiency and safety. Various testing and monitoring methods are used to obtain real-time data during the preparation and construction of the rotation. By tracking and analyzing the data, the elevation and internal force feedback data of the subsequent stages are given to guide and control the bridge rotation process, ensuring that the bridge line shape and internal force meet the design requirements and successfully complete the bridge rotation construction.

[0003] CN108252226A discloses a lateral torsion identification device for bridge rotation construction (see Figure 1 ), including trapezoidal electrode tubes respectively installed on both sides of the box beam, a plurality of detection electrodes with a trapezoidal insertion depth are installed in the trapezoidal electrode tube, the trapezoidal electrode tube below the detection electrode is filled with a conductive liquid, a passage electrode which is often immersed in the conductive liquid is also installed in the trapezoidal electrode tube, the detection electrodes with different insertion depths are respectively connected to external warning lights, the other end of the warning light is connected to a power supply to form a loop, and a switch is provided on the loop; the two trapezoidal electrode tubes on both sides of the box beam form a U-shaped tube structure through a conduit, the liquid levels of the conductive liquid in the two trapezoidal electrode tubes are maintained at the same horizontal plane, when the box beam is torsionally deformed, the liquid level of the conductive liquid in the trapezoidal electrode tube rises or falls relatively, causing different warning lights to light up.

[0004] However, in actual engineering practice, there are the following problems: First, in the prior art, when liquid is filled into the electrode tube through a valve, it is not easy to accurately control the filling amount because the total length of the pipeline is too long.

[0005] Second, the prior art uses a large number of components by using a three-way pipe and a valve to work together.

[0006] 3. In the prior art, different channels in the valve play different roles, and the linkage between the multi-channel functions cannot be achieved.

[0007] Fourth, in the prior art, when there are too many channels inside the valve core, it will be messy and difficult to arrange.

[0008] 5. In the above-mentioned technology, since two electrode tubes are provided, if there are different paths between the two electrode tubes and the filling end, the two electrode tubes cannot maintain the same liquid level. Summary of the invention

[0009] In order to overcome the above problems, the present invention proposes a solution to solve the above multiple problems at the same time.

[0010] The technical solution adopted by the present invention to solve its technical problems is: a method for monitoring the construction of a railway bridge, the monitoring method comprising a deformation monitoring method, a settlement monitoring method, a stress monitoring method, a monitoring method, and a communication control method; the railway bridge comprises a bridge body and at least three support columns, and the bridge body is supported on at least three support columns; the settlement monitoring method comprises: setting scale marks at the lower ends of the support columns to monitor the settlement changes of the support columns; the stress monitoring method comprises: the bridge body comprises a bridge support and a bridge deck, and a plurality of stress sensors are arranged on the bridge support and the bridge deck; the monitoring method comprises: setting a stand on the bridge deck, and setting a camera device on the stand; The deformation monitoring method comprises: using a deformation monitoring system arranged on the bridge deck to monitor the deformation of the railway bridge; the deformation monitoring system comprises an electrode tube, a conduit, and a fluid regulating device; the electrode tube is arranged on the stand, and the two ends of the fluid regulating device are respectively connected to a conduit, and the other ends of the conduits at the two ends are respectively connected to an electrode tube; the fluid regulating device is used to control the fluid on and off between the liquid source and the two electrode tubes; The fluid regulating device comprises a block and a driving part; the block is provided with a driving part; the block comprises a main body, an inlet, a left outlet, a right outlet, and a lower pressure relief port; a valve core is provided in the block, and the driving part can drive the valve core to rotate; the valve core comprises a main channel, a filling channel, a left bending section, a left output section, a right bending section, a right output section, a first pressure relief channel, a second pressure relief channel, and a balanced flow storage channel; The deformation monitoring method further includes: when the driving unit drives the valve core to rotate to the first state, the inlet is connected with the main channel, the main channel is connected with the filling channel above, the left end of the filling channel is provided with a left bending section, the right end is provided with a right bending section, the upper part of the left bending section is connected with the left output section, and the upper part of the right bending section is connected with the right output section; the left outlet is connected with the left output section, the right outlet is connected with the right output section, the upper part of the left bending section is connected with the first pressure relief channel, the lower part of the left bending section is connected with the second pressure relief channel, the diameters of the first and second pressure relief channels are smaller than the diameter of the filling channel, and the first and second pressure relief channels are staggered in the horizontal direction; the balance flow storage channel is provided below the right bending section, and the diameter of the balance flow storage channel is larger than the diameters of the first and second pressure relief channels; When the driving unit drives the valve core to rotate to the second state, the inlet is located below the main body, the lower pressure relief port is located to the right of the inlet, the left outlet is connected to the second pressure relief channel, the right outlet is connected to the first pressure relief channel, and the right output section is connected to the lower pressure relief port; When the driving unit drives the valve core to rotate to the third state, the left outlet, the right outlet and the inlet are not connected; the left outlet, the right outlet and the lower pressure relief port are not connected, and the first pressure relief channel is connected to the lower pressure relief port to discharge the liquid remaining in the valve core; When the fluid regulating device is not in use, the lower pressure relief port is closed by a screw plug; The communication control method includes: setting a controller and a display, wherein the controller is in communication connection with a deformation monitoring system, a stress sensor, and a camera device; the deformation monitoring system and the stress sensor transmit signals to the controller at predetermined intervals; and the display displays the signals transmitted by the camera device in real time.

[0011] Preferably, in the first state, the filling channel is located in the upper half of the valve core.

[0012] Preferably, the length of the first pressure relief channel is shorter than the length of the second pressure relief channel.

[0013] Preferably, the diameter of the balanced flow storage channel is larger than the diameter of the right bending section.

[0014] Preferably, the diameter of the balanced flow storage channel is smaller than the diameter of the right bending section.

[0015] Preferably, the diameters of the first and second pressure relief channels are the same.

[0016] Preferably, the valve core is a valve ball, and the driving part is a driving motor.

[0017] Preferably, in the second state, the upper end of the second pressure relief channel is aligned with the upper end of the left outlet.

[0018] Preferably, in the second state, the lower end of the second pressure relief passage is not aligned with the lower end of the left outlet.

[0019] Preferably, in the second state, the upper end of the first pressure relief channel is not aligned with the upper end of the right outlet.

[0020] The beneficial effects of the present invention are: Invention point 1: In response to the first point raised in the background technology, a pressure relief channel is set in the valve. When the valve core is rotated to the first position, filling can be achieved. In the second position, pressure relief can be achieved. In the third position, the valve is closed and not connected to any passage. Since the pressure relief channel is set, the pressure relief channel has a smaller size. When overfilled, the pressure can be slowly released, ultimately achieving precise control of the liquid level in the electrode tube.

[0021] Invention point 2: In response to the second point raised in the background technology, the valve and the three-way pipe are integrated into one, which simplifies the structure and improves the degree of automation.

[0022] Invention point three: In response to the third point of the background technology, the pressure relief channel is connected to the filling channel, so that when the pressure is released, the filling channel can be used as a part of the pressure relief channel, and a reasonable liquid level can be guaranteed after the pressure is released. When the valve is closed, the first pressure relief channel is connected to the lower pressure relief port, and the residual liquid in the valve can be discharged to prevent freezing outdoors in winter; when not in use, the lower pressure relief port can be closed by a screw plug. This realizes the linkage between the multi-channel functions.

[0023] Invention point four, in response to the fourth point raised in the background technology, a bending portion is provided on the filling channel, and the position of the pressure relief channel can be adapted by the degree of bending of the bending portion, that is, in the two states of valve core rotation, the two channels can be rotated to the same position, so that the two outlets on the valve body can be aligned with the filling channel or the pressure relief channel in the two states of the valve core.

[0024] Invention Point 5: The fifth point proposed in view of the background technology, in the first state, Figure 3 Two additional pressure relief channels are set on the left filling channel, which causes left-right asymmetry or asymmetry of the liquid level in the downstream electrode tube. Figure 3 An additional balancing flow storage channel is provided below the filling channel on the right side to balance the total size of the left and right flow paths and ensure the liquid level balance of the two downstream electrode tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 Schematic diagram of a background technology monitoring device.

[0027] Figure 2 It is the appearance diagram of the block of the present invention.

[0028] Figure 3 This is a cross-sectional view of the valve of the present invention in the first state.

[0029] Figure 4 This is a cross-sectional view of the valve of the present invention in the second state.

[0030] Figure 5 It is a cross-sectional view of the valve of the present invention in the third state.

[0031] Figure 6 This is a schematic diagram of the railway bridge of the present invention. Figure 7 This is a cross-sectional view of the railway bridge of the present invention. Figure 8 This is a schematic diagram of the arrangement of the stress sensor of the present invention. Fig. 9 This is a schematic diagram of the arrangement of settlement monitoring points of the present invention. Fig.10 This is a diagram of the settlement of each point measured by the embodiment of the present invention Fig.11 The monitoring control flow chart of the present invention is In the figure, the reference numerals are as follows: 1. Block; 2. Drive unit; 3. Main body; 4. Valve core; 5. Inlet; 6. Left outlet; 7. Right outlet; 8. Lower pressure relief port; 9. Main channel; 10. Filling channel; 11. Left bending section; 12. Left output section; 13. Right bending section; 14. Right output section; 15. First pressure relief channel; 16. Second pressure relief channel; 17. Balanced flow storage channel; 18. First support column; 19. Second support column; 20. Third support column; 21. Bridge body; 22. Bridge support; 23. Bridge deck; 24. Electrode tube; 25. Stand; 26. Stress sensor; 27. Settlement monitoring point. DETAILED DESCRIPTION As shown in the figure: a method for monitoring the construction of a railway bridge, the monitoring method includes a deformation monitoring method, a settlement monitoring method, a stress monitoring method, a monitoring method, and a communication control method; the railway bridge includes a bridge body and at least three support columns, and the bridge body is supported on at least three support columns; the settlement monitoring method includes: setting scale marks at the lower ends of the support columns to monitor the settlement changes of the support columns; the stress monitoring method includes: the bridge body includes a bridge support and a bridge deck, and a plurality of stress sensors are arranged on the bridge support and the bridge deck; the monitoring method includes: setting a stand on the bridge deck, and setting a camera device on the stand; The deformation monitoring method comprises: using a deformation monitoring system arranged on the bridge deck to monitor the deformation of the railway bridge; the deformation monitoring system comprises an electrode tube, a conduit, and a fluid regulating device; the electrode tube is arranged on the stand, and the two ends of the fluid regulating device are respectively connected to a conduit, and the other ends of the conduits at the two ends are respectively connected to an electrode tube; the fluid regulating device is used to control the fluid on and off between the liquid source and the two electrode tubes; The fluid regulating device comprises a block and a driving part; the block is provided with a driving part; the block comprises a main body, an inlet, a left outlet, a right outlet, and a lower pressure relief port; a valve core is provided in the block, and the driving part can drive the valve core to rotate; the valve core comprises a main channel, a filling channel, a left bending section, a left output section, a right bending section, a right output section, a first pressure relief channel, a second pressure relief channel, and a balanced flow storage channel; The deformation monitoring method further includes: when the driving unit drives the valve core to rotate to the first state, the inlet is connected with the main channel, the main channel is connected with the filling channel above, the left end of the filling channel is provided with a left bending section, the right end is provided with a right bending section, the upper part of the left bending section is connected with the left output section, and the upper part of the right bending section is connected with the right output section; the left outlet is connected with the left output section, the right outlet is connected with the right output section, the upper part of the left bending section is connected with the first pressure relief channel, the lower part of the left bending section is connected with the second pressure relief channel, the diameters of the first and second pressure relief channels are smaller than the diameter of the filling channel, and the first and second pressure relief channels are staggered in the horizontal direction; the balance flow storage channel is provided below the right bending section, and the diameter of the balance flow storage channel is larger than the diameters of the first and second pressure relief channels; When the driving unit drives the valve core to rotate to the second state, the inlet is located below the main body, the lower pressure relief port is located to the right of the inlet, the left outlet is connected to the second pressure relief channel, the right outlet is connected to the first pressure relief channel, and the right output section is connected to the lower pressure relief port; When the driving unit drives the valve core to rotate to the third state, the left outlet, the right outlet and the inlet are not connected; the left outlet, the right outlet and the lower pressure relief port are not connected, and the first pressure relief channel is connected to the lower pressure relief port to discharge the liquid remaining in the valve core; When the fluid regulating device is not in use, the lower pressure relief port is closed by a screw plug; The communication control method includes: setting a controller and a display, wherein the controller is in communication connection with a deformation monitoring system, a stress sensor, and a camera device; the deformation monitoring system and the stress sensor transmit signals to the controller at predetermined intervals; and the display displays the signals transmitted by the camera device in real time.

[0032] As shown in the figure: in the first state, the filling channel is located in the upper half of the valve core. The length of the first pressure relief channel is smaller than the length of the second pressure relief channel. The diameter of the balanced flow storage channel is larger than the diameter of the right bending section. The diameter of the balanced flow storage channel is smaller than the diameter of the right bending section. The diameters of the first and second pressure relief channels are the same. The valve core is a valve ball, and the drive unit is a drive motor. In the second state, the upper end of the second pressure relief channel is aligned with the upper end of the left outlet. In the second state, the lower end of the second pressure relief channel is not aligned with the lower end of the left outlet. In the second state, the upper end of the first pressure relief channel is not aligned with the upper end of the right outlet.

[0033] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not deviate from the present invention should be included in the patent scope of this case.

Claims

1. A method for monitoring the construction of a railway bridge, characterized in that: The monitoring method includes the deformation monitoring method, the settlement monitoring method, the stress monitoring method, the monitoring method, and the communication control method; the railway bridge includes a bridge body and at least three supporting columns, and the bridge body is supported on at least three supporting columns; The settlement monitoring method includes: setting a scale mark at the lower end of the support column to monitor the settlement change of the support column; the stress monitoring method includes: the bridge body includes a bridge support and a bridge deck, and a plurality of stress sensors are arranged on the bridge support and the bridge deck; the monitoring method includes: setting a stand on the bridge deck, and setting a camera device on the stand; The deformation monitoring method comprises: using a deformation monitoring system arranged on the bridge deck to monitor the deformation of the railway bridge; the deformation monitoring system comprises an electrode tube, a conduit, and a fluid regulating device; the electrode tube is arranged on the stand, and the two ends of the fluid regulating device are respectively connected to a conduit, and the other ends of the conduits at the two ends are respectively connected to an electrode tube; the fluid regulating device is used to control the fluid on and off between the liquid source and the two electrode tubes; The fluid regulating device comprises a block and a driving part; the block is provided with a driving part; the block comprises a main body, an inlet, a left outlet, a right outlet, and a lower pressure relief port; a valve core is provided in the block, and the driving part can drive the valve core to rotate; the valve core comprises a main channel, a filling channel, a left bending section, a left output section, a right bending section, a right output section, a first pressure relief channel, a second pressure relief channel, and a balanced flow storage channel; The deformation monitoring method further includes: when the driving unit drives the valve core to rotate to the first state, the inlet is connected with the main channel, the main channel is connected with the filling channel above, the left end of the filling channel is provided with a left bending section, the right end is provided with a right bending section, the upper part of the left bending section is connected with the left output section, and the upper part of the right bending section is connected with the right output section; the left outlet is connected with the left output section, the right outlet is connected with the right output section, the upper part of the left bending section is connected with the first pressure relief channel, the lower part of the left bending section is connected with the second pressure relief channel, the diameters of the first and second pressure relief channels are smaller than the diameter of the filling channel, and the first and second pressure relief channels are staggered in the horizontal direction; the balance flow storage channel is provided below the right bending section, and the diameter of the balance flow storage channel is larger than the diameters of the first and second pressure relief channels; When the driving unit drives the valve core to rotate to the second state, the inlet is located below the main body, the lower pressure relief port is located to the right of the inlet, the left outlet is connected to the second pressure relief channel, the right outlet is connected to the first pressure relief channel, and the right output section is connected to the lower pressure relief port; When the driving unit drives the valve core to rotate to the third state, the left outlet, the right outlet and the inlet are not connected; the left outlet, the right outlet and the lower pressure relief port are not connected, and the first pressure relief channel is connected to the lower pressure relief port to discharge the liquid remaining in the valve core; When the fluid regulating device is not in use, the lower pressure relief port is closed by a screw plug; The communication control method includes: setting a controller and a display, wherein the controller is in communication connection with a deformation monitoring system, a stress sensor, and a camera device; the deformation monitoring system and the stress sensor transmit signals to the controller at predetermined intervals; and the display displays the signals transmitted by the camera device in real time.

2. A method for monitoring the construction of a railway bridge according to claim 1, characterized in that: In the first state, the filling channel is located in the upper half of the valve core.

3. A method for monitoring the construction of a railway bridge according to claim 1, characterized in that: The length of the first pressure relief channel is shorter than the length of the second pressure relief channel.

4. A method for monitoring the construction of a railway bridge according to claim 1, characterized in that: The diameter of the balanced flow storage channel is greater than the diameter of the right bending section.

5. A method for monitoring the construction of a railway bridge according to claim 1, characterized in that: The diameter of the balanced flow storage channel is smaller than the diameter of the right bending section.

6. A method for monitoring the construction of a railway bridge according to claim 1, characterized in that: The diameters of the first and second pressure relief channels are the same.

7. A method for monitoring the construction of a railway bridge according to claim 1, characterized in that: The valve core is a valve ball, and the driving part is a driving motor.

8. A method for monitoring the construction of a railway bridge according to claim 1, characterized in that: In the second state, the upper end of the second pressure relief passage is aligned with the upper end of the left outlet.

9. A method for monitoring the construction of a railway bridge according to claim 8, characterized in that: In the second state, the lower end of the second pressure relief passage is not aligned with the lower end of the left outlet.

10. A method for monitoring the construction of a railway bridge according to claim 1, characterized in that: In the second state, the upper end of the first pressure relief passage is not aligned with the upper end of the right outlet.

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