Automatic differential adjustment system of box girder segment assembly support system and use method

Abstract

The invention relates to the technical field of monitoring and adjusting, in particular to an automatic differential adjusting system of a box girder segment assembling support system and a using method.The automatic differential adjusting system comprises a plurality of sets of supporting stand columns, the multiple sets of supporting stand columns are arranged on the flat foundation surface, and cross beams are laid between the top ends of the multiple sets of supporting stand columns; a plurality of sets of hydraulic jacks used for supporting and adjusting the steel box girder are distributed on the surface of the cross beam, the hydraulic jacks are connected into an adjusting assembly, and the adjusting assembly comprises hydraulic jack drivers which are connected with each set of hydraulic jacks and provide hydraulic power for each set of hydraulic jacks. The control terminal is electrically connected with the hydraulic jack driver and provides working signals for the hydraulic jack, the total station works in real time and monitors the position of the steel box girder installation section, the strain gauge detects the compression condition of the hydraulic jack and adjusts the compression condition in real time, and the installation accuracy of the steel box girder installation section is guaranteed while installation of the steel box girder installation section is completed.

Description

Technical Field

[0001] The invention relates to the technical field of monitoring and adjusting systems, and in particular to an automatic micro-difference adjusting system for a box girder segment assembly bracket system and a use method thereof. Background Art

[0002] For wide steel box girder structures that adopt large-segment hoisting construction methods, the traditional support system usually adopts the method of welding short steel pipes to support the steel box girder for construction. The advantages of this method are small investment, relatively simple construction operation, and can speed up the construction speed. However, this traditional support system also has some obvious shortcomings;

[0003] Traditional support systems are difficult to meet precision requirements. Due to the lack of a sophisticated adjustment mechanism, traditional supports may not be able to achieve precise positioning and adjustment when faced with complex or demanding installation work, which may lead to deviations in the final steel box girder structure and affect the quality and service life of the bridge. At the same time, due to the fixation of the support system, in the subsequent installation process, it is impossible to make real-time adjustments according to the pressure changes, which is prone to the problem of gradually increasing installation errors as the installation progresses. For this reason, an automatic micro-difference adjustment system for the box girder segment assembly support system and its use method are proposed. Summary of the invention

[0004] In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides an automatic micro-difference adjustment system for a box girder segment assembly support system and a use method thereof.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: an automatic micro-difference adjustment system for a box girder segment assembly support system, comprising support columns, wherein the support columns are provided in a plurality of groups, and the plurality of groups of support columns are arranged on a flat foundation surface, and cross beams are laid between the top ends of the plurality of groups of support columns, and the surface of the cross beams is provided with a plurality of groups of hydraulic jacks for supporting and adjusting the steel box girder, and the hydraulic jacks are connected to an adjustment component, and the adjustment component comprises a hydraulic jack driver connected to each group of hydraulic jacks to provide hydraulic power to each group of hydraulic jacks, a control terminal electrically connected to the hydraulic jack driver to provide a working signal to the hydraulic jack, and a detection component electrically connected to the control terminal to provide a monitoring signal to the control terminal.

[0006] Preferably, the detection component includes a strain gauge and a total station, the number of the strain gauges is consistent with the number of the hydraulic jacks, the strain gauge is arranged on the top of the movable end of the hydraulic jack, and the total station is set on the periphery of the supporting column.

[0007] Preferably, the method comprises the following steps:

[0008] Step A, erecting an assembly support system;

[0009] Step B, arranging hydraulic jacks for supporting each set of steel box girders according to the data of the installation section of each set of steel box girders, and setting up monitoring equipment;

[0010] Step C: During the erection of the steel box girders, the erection position of each set of steel box girders is adjusted by negative feedback of the detection data.

[0011] Preferably, it is characterized in that the step A comprises:

[0012] Step A1, leveling and hardening the ground in sequence according to the assembly order of the steel box beam to form a flat foundation for the installation of the supporting columns;

[0013] Step A2, installing support columns on each group of foundations respectively, and calibrating the installed support columns so that the tops of each group of support columns are flush;

[0014] Step A3, installing a crossbeam between the tops of several groups of supporting columns, and calibrating the installed crossbeam to keep the top of the crossbeam level.

[0015] The automatic micro-difference adjustment system of the box beam segment assembly support system, the step B comprises:

[0016] Step B1, the number of hydraulic jacks corresponding to a single set of steel box girder installation sections is n0;

[0017] Step B2, establish the calculation formula of n0 G is the weight of the installation section of a single set of steel box beams, F is the bearing capacity of a single hydraulic jack, and the value of n0 obtained by calculation is rounded upwards;

[0018] Step B3, installing a corresponding number of hydraulic jacks on the top of the beam, and posting strain gauges on the movable ends of each set of hydraulic jacks;

[0019] Step B4, repeating steps B1 to B4 until the arrangement of the hydraulic jacks corresponding to each set of steel box girder installation sections is completed;

[0020] Step B5, setting up several groups of total stations on the periphery of the beam;

[0021] Step B6, after the strain gauge and the total station are set up, the strain gauge and the total station are electrically connected to the control terminal, and the elevation data of the top of each group of hydraulic jacks is measured by the total station. The elevation data is transmitted to the control terminal, and the control terminal controls the group of hydraulic jacks to extend and retract through the hydraulic jack driver until the elevation data of the top of each group of hydraulic jacks are consistent. The consistent elevation data is used as the initial height, and the preset height of each group of hydraulic jacks corresponding to each steel box girder installation section is set. The control terminal uses the hydraulic jack driver to make the hydraulic jack reach the preset height, and the preset height is used as the reference height.

[0022] Preferably, in step B3, when the number of cross beams in the steel box girder installation section is 2, if n0=4, the hydraulic jacks are arranged at the four corners of the steel box girder installation section; if n0>4 and is an even number, the hydraulic jacks are evenly distributed under the cross beams on both sides of the steel box girder, and the hydraulic jacks on each side are arranged at equal intervals; if n0>4 and is an odd number, the hydraulic jacks are first evenly distributed under the cross beams on both sides of the steel box girder, and the hydraulic jacks on each side are evenly distributed, and a separate hydraulic jack is added on the lower side of the longitudinal section of the steel box girder.

[0023] Preferably, in step B3, the strain gauge is a surface vibrating wire strain gauge, and the measurement frequency of the strain gauge is the entire process from the beginning to the end of the installation;

[0024] In step B5, at least two groups of total stations are provided, and a total of 8 elevation measurement points are arranged at the top and bottom corners of each steel box girder installation section. The measurement frequency of the total station is from the beginning to the end of the entire installation process.

[0025] Preferably, the step C comprises:

[0026] Step C1, lifting the steel box girder installation section by crane, and setting up the total station to generate elevation data;

[0027] Step C2, the crane lifts the steel box girder installation section to the top of the designated hydraulic jack and then gradually lowers it, and the total station measures the elevation data of the steel box girder installation section in real time until it reaches the preset height position, and the steel box girder installation section contacts and is supported by the hydraulic jack;

[0028] Step C3, the strain gauges arranged at the top of the hydraulic jack receive stress and strain data in real time. When the value of one group of strain gauges is higher than that of the other groups of strain gauges on the same side, the hydraulic jack corresponding to the strain gauge at this location is controlled to retract by the hydraulic jack driver until the value of the strain gauge at this location is consistent with that of the other groups of strain gauges on the same side.

[0029] When the value of a certain group of strain gauges is lower than that of the other groups of strain gauges on the same side, the hydraulic jack corresponding to the group of strain gauges is controlled by the hydraulic jack driver to extend until the value of the strain gauge here is consistent with that of the other groups of strain gauges on the same side;

[0030] Step C4, after the steel box girder installation section is placed, the total station measures the elevation data of the steel box girder installation section in real time. When the difference between the preset target elevation and the measured elevation of the steel box girder installation section is positive, that is, the measured elevation data is less than the preset target elevation, the hydraulic jack driver controls the hydraulic jack at the corresponding position to lift the steel box girder installation section until the difference value is lower than the error threshold;

[0031] When the difference between the preset target elevation and the measured elevation of the steel box girder installation section is a negative value, that is, the measured elevation data is greater than the preset target elevation, the hydraulic jack driver controls the hydraulic jack at the corresponding position to fall back, lowering the steel box girder installation section until the difference value is lower than the error threshold.

[0032] Preferably, the step C also includes step C5, after the steel box girder installation section is placed and the adjustment process of step C is completed, the total station generates elevation data in real time, when the difference between the preset target elevation and the measured elevation of the steel box girder installation section is positive, that is, the measured elevation data is less than the preset target elevation, the hydraulic jack driver controls the hydraulic jack at the corresponding position to lift, and lift the steel box girder installation section at that position until the difference value is lower than the error threshold;

[0033] When the difference between the preset target elevation and the measured elevation of the steel box girder installation section is a negative value, that is, the measured elevation data is greater than the preset target elevation, the hydraulic jack driver controls the hydraulic jack at the corresponding position to fall back, lowering the steel box girder installation section until the difference value is lower than the error threshold;

[0034] Preferably, the step C further includes step C6. While step C6 is being performed, the strain gauges disposed at the top of the hydraulic jack receive stress-strain data in real time. When the value of a certain group of strain gauges is higher than that of the other groups of strain gauges on the same side, the hydraulic jack corresponding to the strain gauge at this location is controlled by the hydraulic jack driver to retract until the value of the strain gauge at this location is consistent with that of the other groups of strain gauges on the same side.

[0035] When the value of a certain group of strain gauges is lower than that of the other groups of strain gauges on the same side, the hydraulic jack corresponding to the group of strain gauges is controlled to extend by the hydraulic jack driver until the value of the strain gauge here is consistent with that of the other groups of strain gauges on the same side.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] 1. The present invention is provided with a hydraulic jack, a jack driver, a control terminal, a strain gauge and a total station. The initial state of the hydraulic jack is preset by the data of the total station. During the hoisting process of the steel box girder installation end, the total station works in real time to monitor the position of the steel box girder installation section. After reaching the set position, the pressure condition of the hydraulic jack is detected by the strain gauge and adjusted in real time. While completing the installation of the steel box girder installation section, the problem of deformation of the steel box girder installation section due to the uneven degree of support is avoided, thereby ensuring the installation accuracy of the steel box girder installation section.

[0038] 2. In the present invention, after the steel box girder installation section is installed in place, during the subsequent construction process, the steel box girder installation section can be continuously monitored, and the steel box girder installation section can be adjusted in real time through the monitoring data, thereby ensuring the accuracy of the steel box girder stage installation position during the entire construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a front view structural schematic diagram of the present invention;

[0040] Figure 2 It is a schematic diagram of the installation position arrangement of the present invention;

[0041] Figure 3 The figure is a schematic diagram of the adjustment process of the present invention.

[0042] The numbers in the figure represent:

[0043] 1. Support column; 2. Beam; 3. Hydraulic jack; 4. Hydraulic jack driver; 5. Control terminal; 6. Detection component; 61. Strain gauge; 62. Total station. DETAILED DESCRIPTION

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the following embodiments are merely preferred embodiments of the present invention and are not exhaustive.

[0045] Example:

[0046] like Figure 1 - Figure 3 As shown, the present invention provides an automatic micro-difference adjustment system for a box girder segment assembly support system, including support columns 1, wherein the support columns 1 are provided in a plurality of groups, wherein the plurality of groups of support columns 1 are arranged on a flat foundation surface, wherein a cross beam 2 is laid between the tops of the plurality of groups of support columns 1, wherein the surface of the cross beam 2 is provided with a plurality of groups of hydraulic jacks 3 for supporting and adjusting the steel box girder, wherein the hydraulic jacks 3 are connected to an adjustment component, wherein the adjustment component includes a hydraulic jack driver 4 connected to each group of hydraulic jacks 3 for providing hydraulic power to each group of hydraulic jacks 3, a control terminal 5 electrically connected to the hydraulic jack driver 4 for providing a working signal to the hydraulic jack 3, and a detection component 6 electrically connected to the control terminal 5 for providing a monitoring signal to the control terminal 5.

[0047] The detection assembly 6 includes a strain gauge 61 and a total station 62;

[0048] The number of strain gauges 61 is consistent with the number of hydraulic jacks 3. The strain gauges 61 are set at the top of the movable end of the hydraulic jacks 3. The strain gauges 61 can be used to obtain the pressure conditions of each group of hydraulic jacks 3 in real time, so as to adjust the height of the hydraulic jacks 3 according to the pressure conditions, so that the hydraulic jacks 3 can maintain the lifting state of the steel box girder installation section while avoiding the problem of excessive lifting of a certain area of ​​the steel box girder installation section causing deformation of the steel box girder. The total station 62 is set up on the periphery of the supporting column 1. The total station 62 is used to obtain the elevation data of the entire installation process of the steel box girder installation section. The elevation data serves as the data basis for the control terminal 5 to adjust the hydraulic jacks 3.

[0049] The method for using the automatic micro-difference adjustment system of the box girder segment assembly support system includes the following steps:

[0050] Step A, erecting an assembly support system, step A includes, according to the assembly order of the steel box girder, leveling the ground and hardening the ground in sequence to form a flat foundation for the installation of support columns 1, installing support columns 1 on each group of foundations, calibrating the installed support columns 1 so that the tops of each group of support columns 1 are flush, installing beams 2 between the tops of several groups of support columns 1, calibrating the installed beams 2 so that the tops of the beams 2 remain horizontal, and the beams 2 are used as a placement platform for the hydraulic jacks 3.

[0051] Step B, respectively arranges the hydraulic jacks 3 for supporting each group of steel box beams according to the data of each group of steel box beam installation sections, and sets up monitoring equipment. Step B includes: the number of hydraulic jacks 3 corresponding to a single group of steel box beam installation sections is n0, and establishes a calculation formula for n0 G is the weight of a single set of steel box girder installation sections, F is the bearing capacity of a single hydraulic jack 3, the calculated value of n0 is rounded upwards, when the number of crossbeams in the steel box girder installation section is 2, if n0=4, the hydraulic jacks 3 are arranged at the four corners of the steel box girder installation section, if n0>4 and is an even number, the hydraulic jacks 3 are evenly distributed under the crossbeams on both sides of the steel box girder, and the hydraulic jacks 3 on each side are arranged at equal intervals, if n0>4 and is an odd number, the hydraulic jacks 3 are evenly distributed under the crossbeams on both sides of the steel box girder, and the hydraulic jacks 3 on each side are evenly distributed, and a single hydraulic jack 3 is added on the lower side of the longitudinal section of the steel box girder;

[0052] A corresponding number of hydraulic jacks 3 are installed on the top of the cross beam 2, and a strain gauge 61 is posted on the movable end of each group of hydraulic jacks 3. The strain gauge 61 adopts a surface vibrating wire strain gauge. The measurement frequency of the strain gauge 61 is the whole process from the beginning to the end of the installation. Repeat the above operation until the arrangement of the hydraulic jacks 3 corresponding to each group of steel box beam installation sections is completed;

[0053] Several groups of total stations 62 are arranged on the periphery of the cross beam 2, and at least two groups of total stations 62 are arranged. A total of 8 elevation measurement points are arranged at the top and bottom four corners of each group of steel box beam installation section. The measurement frequency of the total station 62 is the whole process from the beginning to the end of the installation. After the strain gauge 61 and the total station 62 are set, the strain gauge 61 and the total station 62 are electrically connected to the control terminal 5, and the elevation data of each group of hydraulic jacks 3 ends are measured by the total station 62. The elevation data is transmitted to the control terminal 5. The control terminal 5 controls the group of hydraulic jacks 3 to extend and retract through the hydraulic jack driver 4 until the elevation data of the ends of each group of hydraulic jacks 3 are consistent. The consistent elevation data is used as the initial height, and the preset height of each group of hydraulic jacks 3 corresponding to each steel box beam installation section is set. The control terminal 5 makes the hydraulic jacks 3 reach the preset height through the hydraulic jack driver 4, and the preset height is used as the reference height;

[0054] Step C, during the erection of the steel box girder, the erection position of each group of steel box girders is adjusted by negative feedback of the detection data, the steel box girder installation section is hoisted by the crane, and the total station 62 starts to generate elevation data. The crane hoists the steel box girder installation section to the top of the designated hydraulic jack 3 and then gradually lowers it. The total station 62 measures the elevation data of the steel box girder installation section in real time until it reaches the preset height position. The steel box girder installation section contacts and is supported by the hydraulic jack 3. The strain gauge 61 disposed at the end of the hydraulic jack 3 receives stress and strain data in real time. When the value of one group of strain gauges 61 is higher than that of the other groups of strain gauges 61 on the same side, the hydraulic jack 3 corresponding to the strain gauge 61 at this location is controlled by the hydraulic jack driver 4 to retract until the value of the strain gauge 61 at this location is consistent with that of the other groups of strain gauges 61 on the same side.

[0055] When the value of a certain group of strain gauges 61 is lower than that of the other groups of strain gauges 61 on the same side, the hydraulic jack 3 corresponding to the strain gauge 61 at this location is controlled by the hydraulic jack driver 4 to extend until the value of the strain gauge 61 at this location is consistent with that of the other groups of strain gauges 61 on the same side;

[0056] After the steel box girder installation section is placed, the total station 62 measures the elevation data of the steel box girder installation section in real time. When the difference between the preset target elevation and the measured elevation of the steel box girder installation section is a positive value, that is, the measured elevation data is less than the preset target elevation, the hydraulic jack driver 4 controls the hydraulic jack 3 at the corresponding position to lift the steel box girder installation section until the difference value is lower than the error threshold.

[0057] When the difference between the preset target elevation and the measured elevation of the steel box girder installation section is a negative value, that is, the measured elevation data is greater than the preset target elevation, the hydraulic jack driver 4 controls the hydraulic jack 3 at the corresponding position to fall back, lowering the steel box girder installation section until the difference value is lower than the error threshold;

[0058] After the steel box girder installation section is placed and the adjustment process is completed, the total station 62 continues to generate elevation data in real time. When the difference between the preset target elevation and the measured elevation of the steel box girder installation section is positive, that is, the measured elevation data is less than the preset target elevation, the hydraulic jack driver 4 controls the hydraulic jack 3 at the corresponding position to lift the steel box girder installation section until the difference value is lower than the error threshold;

[0059] When the difference between the preset target elevation and the measured elevation of the steel box girder installation section is a negative value, that is, the measured elevation data is greater than the preset target elevation, the hydraulic jack driver 4 controls the hydraulic jack 3 at the corresponding position to fall back, lowering the steel box girder installation section until the difference value is lower than the error threshold;

[0060] While the installation section of the steel box girder is adjusting the installation position, the strain gauge 61 installed at the end of the hydraulic jack 3 receives stress and strain data in real time. When the value of a certain group of strain gauges 61 is higher than that of the other groups of strain gauges 61 on the same side, the hydraulic jack 3 corresponding to the group of strain gauges 61 is controlled by the hydraulic jack driver 4 to retract until the value of the strain gauge 61 here is consistent with that of the other groups of strain gauges 61 on the same side.

[0061] When the value of a certain group of strain gauges 61 is lower than that of the other groups of strain gauges 61 on the same side, the hydraulic jack 3 corresponding to the strain gauge 61 at this location is controlled by the hydraulic jack driver 4 to extend until the value of the strain gauge 61 at this location is consistent with that of the other groups of strain gauges 61 on the same side.

[0062] The above description is only a preferred embodiment of the present invention, which is only illustrative and not restrictive of the present invention. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims of the present invention, but all of them will fall within the scope of protection of the present invention.

Claims

1. The automatic micro-difference adjustment system of the box beam segment assembly support system is characterized by: It includes supporting columns, which are provided in several groups. Several groups of supporting columns are arranged on a flat foundation surface. Crossbeams are laid between the tops of several groups of supporting columns. Several groups of hydraulic jacks for supporting and adjusting steel box girders are arranged on the surface of the crossbeams. The hydraulic jacks are connected to an adjustment component. The adjustment component includes a hydraulic jack driver connected to each group of hydraulic jacks to provide hydraulic power to each group of hydraulic jacks, a control terminal electrically connected to the hydraulic jack driver to provide a working signal for the hydraulic jack, and a detection component electrically connected to the control terminal to provide a monitoring signal for the control terminal.

2. The automatic micro-difference adjustment system for box girder segment assembly support system according to claim 1, characterized in that: The detection component includes a strain gauge and a total station. The number of the strain gauges is consistent with the number of the hydraulic jacks. The strain gauge is arranged on the top of the movable end of the hydraulic jack, and the total station is set up on the periphery of the supporting column.

3. A method for using the automatic micro-difference adjustment system for the box beam segment assembly support system according to claim 2, characterized in that: The following steps are included: Step A, erecting an assembly support system; Step B, arranging hydraulic jacks (3) for supporting each set of steel box beams according to the data of the installation section of each set of steel box beams, and setting up monitoring equipment; Step C: During the erection of the steel box girders, the erection position of each set of steel box girders is adjusted by negative feedback of the detection data.

4. The method for using the automatic micro-difference adjustment system for the box beam segment assembly support system according to claim 3, characterized in that: The step A comprises: Step A1, leveling and hardening the ground in sequence according to the assembly sequence of the steel box beam to form a flat foundation for the installation of the support column (1); Step A2, installing support columns on each group of foundations respectively, and calibrating the installed support columns so that the tops of each group of support columns are flush; Step A3, installing a crossbeam between the tops of several groups of supporting columns, and calibrating the installed crossbeam to keep the top of the crossbeam level.

5. The automatic micro-difference adjustment system for box girder segment assembly support system according to claim 3, characterized in that: The step B comprises: Step B1, the number of hydraulic jacks corresponding to a single set of steel box girder installation sections is n0; Step B2, establish the calculation formula of n0 G is the weight of the installation section of a single set of steel box beams, F is the bearing capacity of a single hydraulic jack, and the value of n0 obtained by calculation is rounded upwards; Step B3, installing a corresponding number of hydraulic jacks on the top of the beam, and posting strain gauges on the movable ends of each set of hydraulic jacks; Step B4, repeating steps B1 to B4 until the arrangement of the hydraulic jacks corresponding to each set of steel box girder installation sections is completed; Step B5, setting up several groups of total stations on the periphery of the beam; Step B6, after the strain gauge and the total station are set up, the strain gauge and the total station are electrically connected to the control terminal, and the elevation data of the top of each group of hydraulic jacks is measured by the total station. The elevation data is transmitted to the control terminal, and the control terminal controls the group of hydraulic jacks to extend and retract through the hydraulic jack driver until the elevation data of the top of each group of hydraulic jacks are consistent. The consistent elevation data is used as the initial height, and the preset height of each group of hydraulic jacks corresponding to each steel box girder installation section is set. The control terminal uses the hydraulic jack driver to make the hydraulic jack reach the preset height, and the preset height is used as the reference height.

6. The method for using the automatic micro-difference adjustment system for the box beam segment assembly support system according to claim 5, characterized in that: In the step B3, when the number of cross beams in the steel box girder installation section is 2, if n0=4, the hydraulic jacks are arranged at the four corners of the steel box girder installation section; if n0>4 and is an even number, the hydraulic jacks are evenly distributed under the cross beams on both sides of the steel box girder, and the hydraulic jacks on each side are arranged at equal intervals; if n0>4 and is an odd number, the hydraulic jacks are first evenly distributed under the cross beams on both sides of the steel box girder, and the hydraulic jacks on each side are evenly distributed, and a separate hydraulic jack is added on the lower side of the longitudinal section of the steel box girder.

7. The method for using the automatic micro-difference adjustment system for the box beam segment assembly support system according to claim 5, characterized in that: In step B3, the strain gauge is a surface vibrating wire strain gauge, and the measurement frequency of the strain gauge is the whole process from the beginning to the end of the installation; In step B5, at least two groups of total stations are provided, and a total of 8 elevation measurement points are arranged at the top and bottom corners of each steel box girder installation section. The measurement frequency of the total station is from the beginning to the end of the entire installation process.

8. The method for using the automatic micro-difference adjustment system for the box beam segment assembly support system according to claim 3, characterized in that: The step C comprises: Step C1, lifting the steel box girder installation section by crane, and setting up the total station to generate elevation data; Step C2, the crane lifts the steel box girder installation section to the top of the designated hydraulic jack and then gradually lowers it, and the total station measures the elevation data of the steel box girder installation section in real time until it reaches the preset height position, and the steel box girder installation section contacts and is supported by the hydraulic jack; Step C3, the strain gauges arranged at the top of the hydraulic jack receive stress and strain data in real time. When the value of one group of strain gauges is higher than that of the other groups of strain gauges on the same side, the hydraulic jack corresponding to the strain gauge at this location is controlled to retract by the hydraulic jack driver until the value of the strain gauge at this location is consistent with that of the other groups of strain gauges on the same side. When the value of a certain group of strain gauges is lower than that of the other groups of strain gauges on the same side, the hydraulic jack corresponding to the group of strain gauges is controlled by the hydraulic jack driver to extend until the value of the strain gauge here is consistent with that of the other groups of strain gauges on the same side; Step C4, after the steel box girder installation section is placed, the total station measures the elevation data of the steel box girder installation section in real time. When the difference between the preset target elevation and the measured elevation of the steel box girder installation section is positive, that is, the measured elevation data is less than the preset target elevation, the hydraulic jack driver controls the hydraulic jack at the corresponding position to lift the steel box girder installation section until the difference value is lower than the error threshold; When the difference between the preset target elevation and the measured elevation of the steel box girder installation section is a negative value, that is, the measured elevation data is greater than the preset target elevation, the hydraulic jack driver controls the hydraulic jack at the corresponding position to fall back, lowering the steel box girder installation section until the difference value is lower than the error threshold.

9. The method for using the automatic micro-difference adjustment system for the box beam segment assembly support system according to claim 8, characterized in that: The step C also includes a step C5, after the steel box girder installation section is placed and the adjustment process of step C5 is completed, the total station generates elevation data in real time, when the difference between the preset target elevation and the measured elevation of the steel box girder installation section is a positive value, that is, the measured elevation data is less than the preset target elevation, the hydraulic jack driver controls the hydraulic jack at the corresponding position to lift, and lift the steel box girder installation section until the difference value is lower than the error threshold; When the difference between the preset target elevation and the measured elevation of the steel box girder installation section is a negative value, that is, the measured elevation data is greater than the preset target elevation, the hydraulic jack driver controls the hydraulic jack at the corresponding position to fall back, lowering the steel box girder installation section until the difference value is lower than the error threshold.

10. The method for using the automatic micro-difference adjustment system for the box beam segment assembly support system according to claim 9, characterized in that: The step C also includes a step C6, in which, while the step C5 is being performed, the strain gauges arranged at the top of the hydraulic jack receive stress and strain data in real time, and when the value of a certain group of strain gauges is higher than that of the other groups of strain gauges on the same side, the hydraulic jack corresponding to the strain gauge at this location is controlled to retract by the hydraulic jack driver until the value of the strain gauge at this location is consistent with that of the other groups of strain gauges on the same side; When the value of a certain group of strain gauges is lower than that of the other groups of strain gauges on the same side, the hydraulic jack corresponding to the group of strain gauges is controlled to extend by the hydraulic jack driver until the value of the strain gauge here is consistent with that of the other groups of strain gauges on the same side.

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