Steel truss beam pushing and rectifying system and rectifying method thereof

Abstract

The application discloses a steel truss beam pushing and rectifying system and a rectifying method thereof, wherein the steel truss beam pushing and rectifying system comprises a guiding device, a rectifying device and a deviation monitoring device; the guiding device comprises a plurality of guiding wheels arranged on both sides of the width direction of the steel truss beam and used for cooperating with a guiding beam on a mounting support for guiding; the rectifying device comprises an electric driving rectifying device, the electric driving rectifying device comprises a rectifying motor, a driving gear connected with the rectifying motor and a rack engaged with the driving gear, and a rectifying roller is arranged at the end of the rack; and the deviation monitoring device is used for monitoring the deviation state of the steel truss beam in the pushing process. The steel truss beam pushing and rectifying system can realize real-time detection and control of the central axis of the bridge in the truss pushing process, check whether the central line of the box girder deviates at any time, and accurately rectify the deviation.

Description

Technical Field

[0001] This invention relates to the field of bridge technology, and in particular to a steel truss girder jacking and correction system and its correction method. Background Technology

[0002] With rapid socio-economic development and accelerating urban expansion, roads are constantly extending outwards around cities. This is significantly constrained by existing highways, making the construction of new bridges across them extremely difficult, and semi-closed construction can severely impact traffic flow. To avoid disrupting highway traffic, the bridge launching method for crossing highways has emerged and is experiencing rapid growth with broad application prospects. Along with the continuous development of machinery and equipment, bridge launching techniques have become more diversified and standardized, evolving from single-point launching to multi-point launching, from segmental launching to overall launching, from intermittent launching to continuous launching, and from early direct launching of the beam using horizontal and vertical jacks to horizontal jacks combined with tie rods for beam launching and pulling, and finally to a walking-style multi-point continuous launching method combining horizontal and vertical jacks. This demonstrates the gradual improvement of the launching equipment system and the increasing maturity of the construction technology.

[0003] Currently, the jacking construction of large-span steel truss beams generally suffers from lateral displacement of the steel beams due to various reasons during the jacking process. Summary of the Invention

[0004] The main objective of this invention is to provide a steel truss jacking and correction system, which aims to solve the problem of lateral displacement of steel beams caused by various reasons during the jacking process.

[0005] To achieve the above objectives, the present invention proposes a steel truss girder jacking and correction system, comprising:

[0006] The guiding device includes multiple guide wheels, which are disposed on both sides of the steel truss beam in the width direction for guiding in conjunction with the guide beam on the mounting bracket;

[0007] A web guiding device includes an electrically driven web guiding device, the electrically driven web guiding device comprising a web guiding motor, a drive gear connected to the web guiding motor, and a rack meshing with the drive gear, wherein a web guiding roller is provided at the end of the rack; and,

[0008] A deviation monitoring device is used to monitor the deviation of the steel truss beam during the jacking process.

[0009] Optionally, the deviation monitoring device includes pressure sensors disposed on the end face and / or side surface of the guide wheel, with multiple pressure sensors provided for multiple guide wheels; and / or,

[0010] The deviation monitoring device includes a total station and / or a theodolite.

[0011] Optionally, the correction device further includes a manual correction device, which includes:

[0012] Jacks, used to correspond to the sides of the steel truss beams along their longitudinal extension direction; and,

[0013] A hoist chain is used to be installed at the end of the longitudinal length of the lower chord of the steel truss.

[0014] Optionally, the correction device further includes a protective frame, which is laid along the longitudinal direction of the steel truss beam. The protective frame is spaced apart from the guide wheels, and the protective frame and the multiple guide wheels form a groove.

[0015] Optionally, the correction device further includes a slider baffle and a pad beam, wherein the lower end of the guide wheel is welded to the slider baffle, and the upper end of the guide wheel is welded to the pad beam.

[0016] This invention also proposes a method for correcting the deviation of a steel truss girder during jacking, wherein multiple guide wheels are provided on both sides of the steel truss girder in the width direction, and the method includes the following steps:

[0017] During the jacking process, the actual pressure values ​​of multiple guide wheels are obtained;

[0018] The side with more guide wheels corresponding to a non-zero actual pressure value is determined as the bias side;

[0019] Calculate the average pressure of the multiple guide wheels located on the biased side;

[0020] When the average pressure value is greater than the preset pressure value, calculate the pressure ratio between the average pressure value and the preset pressure value;

[0021] The correction strategy is determined based on the pressure ratio.

[0022] Optionally, the pressure ratio is K, and determining the correction strategy based on the pressure ratio includes:

[0023] When K > 1.3, the jacking system is stopped for inspection.

[0024] When K≤1.3, the target correction amount is determined, and the correction device is controlled to perform correction based on the target correction amount.

[0025] Optionally, when K ≤ 1.3, the target correction amount is determined, including:

[0026] When 1.1 < K ≤ 1.3, the target correction amount is determined to be K * the first preset correction amount;

[0027] When 1.05 < K ≤ 1.1, the target correction amount is determined to be K * the second preset correction amount, wherein the second preset correction amount is less than the first preset correction amount;

[0028] When 1 < K ≤ 1.05, the target correction amount is determined to be zero.

[0029] Optionally, the correction device includes a correction motor, a drive gear connected to the correction motor, and a rack meshing with the drive gear, with a correction roller provided at the end of the rack;

[0030] Based on the target correction amount, control the correction device to perform correction, including:

[0031] The guide wheel with the maximum pressure among the multiple guide wheels on the biased side is identified as the reference guide wheel;

[0032] Obtain the distance between the correction roller and the reference guide roller;

[0033] The lateral movement parameters are determined based on the spacing and the target correction amount;

[0034] The motor operating parameters are determined based on the lateral displacement parameters;

[0035] The motor operation is controlled according to the motor operating parameters.

[0036] Optionally, the spacing is L, and determining the lateral shift parameter based on the spacing and the target correction amount includes:

[0037] When 1m < L ≤ 2m, the lateral displacement parameter is determined to be 0.8 * target correction amount;

[0038] When 0 < K ≤ 1m, the lateral shift parameter is determined to be 1 * target correction amount.

[0039] The technical solution of this invention uses a deviation monitoring device to monitor the deviation of the steel truss girder during the jacking process, a guiding device and a guiding beam to guide it, and a correction device to correct the deviation based on the deviation data. Through the mutual cooperation of the deviation monitoring device, the guiding device and the correction device, the deviation monitoring device is used to monitor the deviation while jacking, and the correction strategy and guiding work are determined based on the detected deviation amount, thereby ensuring that the steel truss girder slides along the design axis during the jacking process. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of a structure of an embodiment of the steel truss girder jacking and correction system of the present invention;

[0042] Figure 2 This is a schematic diagram of the structure of the steel truss jacking and correction control system of the hardware operating environment involved in the embodiments of the present invention;

[0043] Figure 3 This is a flowchart illustrating the first embodiment of the steel truss girder jacking and correction control method of the present invention.

[0044] Explanation of reference numerals in the accompanying drawings of the embodiments provided in this invention:

[0045] label name label name 100 Steel truss jacking and correction system 221 jack 1 Guiding device 23 Protective frame 11 guide wheel 2 Correction device

[0046] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0048] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0049] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0050] With the continuous development of machinery and equipment, bridge jacking construction techniques have become more diversified and standardized, evolving from single-point jacking to multi-point jacking, from segmental jacking to overall jacking, from intermittent jacking to continuous jacking, and from early direct jacking of the beam with horizontal and vertical jacks to horizontal jacks combined with tie rods for jacking and pulling the beam, and then to a step-by-step multi-point continuous jacking construction combining horizontal and vertical jacks. Currently, the jacking construction of large-span steel truss beams commonly suffers from lateral displacement of the steel beam due to various reasons during the jacking process.

[0051] In view of this, the present invention proposes a steel truss girder jacking and correction system 100, which aims to solve the problem of lateral displacement of the steel girder caused by various reasons during the jacking process. Please refer to... Figure 1 , Figure 1 This is a structural schematic diagram of an embodiment of the steel truss girder pushing and correction system of the present invention.

[0052] This invention provides a steel truss girder jacking and correction system 100. Please refer to [link / reference]. Figure 1 The system includes a guiding device 1, a correction device 2, and a deviation monitoring device 3. The guiding device 1 includes multiple guide wheels 11, which are arranged on both sides of the steel truss beam in the width direction to cooperate with the guide beam on the mounting bracket for guidance. The correction device 2 includes an electrically driven correction device 21, which includes a correction motor, a drive gear 212 connected to the correction motor, and a rack meshing with the drive gear 212. A correction roller 213 is provided at the end of the rack. The deviation monitoring device 3 is used to monitor the deviation state of the steel truss beam during the jacking process.

[0053] The technical solution of the present invention uses a deviation monitoring device 3 to monitor the deviation state of the steel truss beam during the jacking process. The guiding device 1 works with the guiding beam to guide the beam, and the correction device 2 corrects the deviation based on the deviation data. Through the mutual cooperation of the deviation monitoring device 3, the guiding device 1 and the correction device 2, the deviation monitoring device 3 is used to monitor the deviation during the jacking process. Then, the correction strategy and guiding work are determined based on the detected deviation amount, thereby ensuring that the steel truss beam slides along the design axis during the jacking process.

[0054] Further, please refer to Figure 1 The deviation monitoring device 3 includes pressure sensors 31 disposed on the end face and / or side surface of the guide wheels 11. Multiple pressure sensors 31 are provided corresponding to multiple guide wheels 11. Since the multiple guide wheels 11 are disposed on both sides of the steel truss beam in the width direction, when the steel truss beam deviates and contacts different guide wheels 11, pressure is generated. At this time, the pressure sensors 31 acquire pressure values, and the deviation amount is determined based on the pressure values. In another embodiment, the deviation monitoring device 3 includes a total station 32 and / or a theodolite 33. While the jacking and pushing are underway, the total station 32 or the theodolite 33 is used to intermittently observe and control the bridge's centerline from the front and rear of the steel beam, constantly checking the deviation amount of the truss centerline.

[0055] To achieve more precise correction, the correction device 2 in this embodiment includes not only an electrically driven correction device, which is automatically controlled by electricity, but also a manual correction device 22. The manual correction device 22 includes jacks 221 and a hoist chain 222. The jacks 221 are positioned on the side of the steel truss beam along its longitudinal extension direction. The hoist chain 222 is positioned at the end of the lower chord of the steel truss beam along its longitudinal length. It is suitable for situations where a significant deviation of 20cm is detected, at which point the jacking is stopped, and the hydraulic jacks 221 are used for correction. In other words, the jacks 221 are positioned at the tail or side for correction. If necessary, the cable and tension of the single-sided continuous jacking sliding jacks 221 can be adjusted to control and correct the deviation. The hoist chain 222 can also be used in conjunction with the jacks to ensure the steel beam advances in a straight line.

[0056] In this embodiment, please refer to Figure 1 Furthermore, the correction device 2 also includes a protective frame 23, which is laid along the longitudinal direction of the steel truss beam. The protective frame 23 is spaced apart from the guide wheels 11, and the protective frame 23 and the multiple guide wheels 11 form a groove. By setting the protective frame 23, it can not only play a protective role, but also determine the degree of deviation by observing the distance between the longitudinal extension direction of the steel truss beam and the protective frame 23, thereby correcting the deviation.

[0057] Furthermore, in this embodiment, the correction device 2 also includes a slider baffle 24 and a pad beam 25. The lower end of the guide wheel 11 is welded to the slider baffle 24, and the upper end of the guide wheel 11 is welded to the pad beam 25. The guide beam is controlled by adjusting the angle and elevation of the guide wheel 11 to adjust the sliding direction of the steel beam and the slide rail edge.

[0058] Reference Figure 2 , Figure 2 This is a schematic diagram of the structure of the steel truss jacking and correction control system of the hardware operating environment involved in the embodiment of the present invention.

[0059] like Figure 2 As shown, the steel truss jacking and correction control system may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be high-speed random access memory (RAM) or stable non-volatile memory (NVM), such as a disk drive. The memory 1005 may also optionally be a storage device independent of the aforementioned processor 1001.

[0060] Those skilled in the art will understand that Figure 2 The structure shown does not constitute a limitation on the steel truss jacking and correction control system, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0061] like Figure 2 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and a steel truss jacking and correction control program.

[0062] exist Figure 2In the steel truss girder jacking and correction control system shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and memory 1005 in the steel truss girder jacking and correction control system of the present invention can be set in the steel truss girder jacking and correction control system. The steel truss girder jacking and correction control system calls the steel truss girder jacking and correction control program stored in the memory 1005 through the processor 1001 and executes the steel truss girder jacking and correction control method provided in the embodiment of the present invention.

[0063] This invention also proposes a method for correcting the deviation of steel truss beams during jacking, referring to... Figure 3 , Figure 3 This is a flowchart illustrating the first embodiment of the steel truss girder jacking and correction control method of the present invention. Multiple guide wheels 11 are provided on both sides of the steel truss girder in the width direction. The steel truss girder jacking and correction method includes the following steps:

[0064] Step S10: During the jacking process, obtain the actual pressure values ​​of the multiple guide wheels 11;

[0065] It should be noted that the subject of execution in this embodiment can be a correction control device, wherein the correction control device can be a device with data processing or data transmission capabilities. In this embodiment and the above embodiments, a correction control device will be used as an example for explanation.

[0066] It is worth noting that in this embodiment, the deviation control device includes: a guiding device 1, a deviation correction device 2, and a deviation monitoring device 3; wherein, the guiding device 1 is used to cooperate with the guide beam on the mounting bracket for guidance; the deviation correction device 2 is used for deviation correction during the jacking process; and the deviation monitoring device 3 is used to monitor the deviation state of the steel truss beam during the jacking process.

[0067] In the specific implementation, when the user needs to run the functional module in the correction control device, the actual pressure value is obtained through the pressure sensor 31. During the jacking process, when the steel truss beam deviates, the guide wheel 11 receives the pressure and transmits it to the pressure sensor 31.

[0068] Step S20: Determine the side with more guide wheels 11 corresponding to non-zero actual pressure values ​​as the bias side;

[0069] It should be noted that multiple guide wheels 11 are arranged on both sides of the steel truss beam in the width direction, and multiple pressure sensors 31 are arranged corresponding to multiple guide wheels 11, that is, multiple pressure sensors 31 are provided on both sides of the steel truss beam in the width direction.

[0070] It is understandable that during the jacking process, the steel truss beam deviates, and the guide wheels 11 on both sides will receive pressure. The number of guide wheels 11 receiving pressure on each side is not the same, and the pressure value received by each guide wheel 11 is also different.

[0071] In practice, when the steel truss deviates during jacking, if the number of guide wheels 11 receiving pressure on the left side is greater than that on the right side, it can be determined that the steel truss deviates to the left. If the number of guide wheels 11 receiving pressure on the right side is greater than that on the left side, it can be determined that the steel truss deviates to the right.

[0072] Step S30: Calculate the average pressure of the multiple guide wheels 11 located on the biased side;

[0073] It is understandable that the pressure values ​​received by the multiple guide wheels 11 in the bias measurement are not the same. For example, the guide wheel 11 closer to the steel truss has a pressure of 100N, while the guide wheel 11 farther from the steel truss has a pressure of 85N.

[0074] In a specific implementation, the pressure values ​​received by the sensors corresponding to the multiple guide wheels 11 of the bias measurement are different. After collecting the pressure values, the analysis system calculates the average pressure value.

[0075] Step S40: When the average pressure value is greater than the preset pressure value, calculate the pressure ratio between the average pressure value and the preset pressure value;

[0076] It is understood that the preset pressure value can be a pressure value set by the user based on experience, such as 30N or 100N, etc. This embodiment does not impose specific restrictions on this.

[0077] In practice, the calculated average pressure is compared with a preset pressure value. If the average pressure is less than or equal to the preset pressure value, the correction system ignores it or another system takes action. If the average pressure is greater than the preset pressure value, the pressure ratio between the average pressure and the preset pressure value is calculated.

[0078] Step S50: Determine the correction strategy based on the pressure ratio.

[0079] It is worth noting that the pressure ratio is divided into different value ranges, and different value ranges correspond to different correction strategies, and different correction strategies correspond to different devices for correction.

[0080] In practice, after calculating the pressure ratio, the pressure ratio level corresponds to a specific correction strategy, and then each device is activated to perform correction according to the correction strategy.

[0081] Furthermore, to more accurately determine the correction strategy, the pressure ratio is K, and determining the correction strategy based on the pressure ratio includes:

[0082] When K > 1.3, the jacking system is stopped for inspection.

[0083] When K≤1.3, the target correction amount is determined, and the correction device 2 is controlled to perform correction based on the target correction amount.

[0084] In practical implementation, after obtaining the pressure values ​​of each guide wheel on the biased side and calculating the average value, the ratio K of the average value to the preset pressure value is calculated. When the K value is large, exceeding 1.3, such as 1.5, 1.8, 2.0, etc., it indicates that the steel truss beam deviates too much, and the jacking system and correction system need to be stopped. The cause of the deviation is checked manually or mechanically, and corresponding measures are taken according to the cause of the deviation. When the K value is within the preset range, less than or equal to 1.3, such as 1.3, 1.2, 1.22, 1.25, 1.1, 1, etc., the range of K values ​​corresponds to the target correction amount. Then, the correction device 2 determines the specific correction angle, correction direction, and correction offset of each device according to the target correction amount.

[0085] Furthermore, when K ≤ 1.3, the target correction amount is determined, including:

[0086] When 1.1 < K ≤ 1.3, the target correction amount is determined to be K * the first preset correction amount;

[0087] When 1.05 < K ≤ 1.1, the target correction amount is determined to be K * the second preset correction amount, wherein the second preset correction amount is less than the first preset correction amount;

[0088] When 1 < K ≤ 1.05, the target correction amount is determined to be zero.

[0089] It is easy to understand that the first preset correction amount and the second preset correction amount are both programs set by the operator based on experience in the steel truss girder pushing correction system, and this embodiment does not impose specific restrictions on them.

[0090] In the specific implementation, after obtaining the pressure values ​​of each guide wheel on the biased side and calculating the average value, the ratio K of the average value to the preset pressure value is calculated, and the target correction amount is determined by the value of K. When K is 1.1 < K ≤ 1.3, for example, K is 1.2, 1.21, 1.23, 1.28, 1.3, the target correction is the product of K and the first preset correction amount. When K is 1.05 < K ≤ 1.1, for example, K is 1.06, 1.07, 1.08, 1.09, 1.0, 1.1, the target correction is the product of K and the second preset correction amount. When K is 1 < K ≤ 1.05, for example, K is 1.01, 1.02, 1.03, 1.04, 1.05, no correction is required, and the deviation of the steel truss beam is within the allowable error range.

[0091] In this embodiment, the correction device 2 includes a correction motor 211, a drive gear 212 connected to the correction motor 211, and a rack meshing with the drive gear 212. A correction roller 213 is provided at the end of the rack.

[0092] Based on the target correction amount, the correction device 2 is controlled to perform correction, including:

[0093] The guide wheel 11 with the maximum pressure among the plurality of guide wheels 11 located on the biased side is identified as the reference guide wheel 11;

[0094] Obtain the distance between the correction roller 213 and the reference guide roller 11;

[0095] The lateral movement parameters are determined based on the spacing and the target correction amount;

[0096] The motor operating parameters are determined based on the lateral displacement parameters;

[0097] The motor operation is controlled according to the motor operating parameters.

[0098] In this embodiment, a correction motor 211 provides correction power, which is connected to a drive gear via a rack and pinion, and then drives the correction rollers for correction. It can be understood that the lateral displacement parameter is the value by which the steel truss needs to move laterally after it deviates from its intended path.

[0099] In practical implementation, when the steel truss deviates during the jacking process, the guide wheel 11 on the deviating side contacts the steel truss. The guide wheel 11 closest to the steel truss receives the greatest pressure, so this guide wheel 11 is used as the reference guide wheel 11. Then, the straight-line distance between the correction roller 213 and the reference guide wheel 11 is obtained. Based on the straight-line distance between the guide wheel 11 and the correction roller 213 and the target correction amount, the parameters for the steel truss to move in the lateral direction are determined. Then, the operating parameters of the motor are determined from these parameters. Finally, the specific operating current, voltage, torque, and other parameters of the motor are determined from the operating parameters to provide appropriate power to the correction roller.

[0100] To more accurately determine and quantify the lateral shift parameters, in this embodiment, the spacing is L. The lateral shift parameters are determined based on the spacing and the target correction amount, including:

[0101] When 1m < L ≤ 2m, the lateral displacement parameter is determined to be 0.8 * target correction amount;

[0102] When 0 < K ≤ 1m, the lateral shift parameter is determined to be 1 * target correction amount.

[0103] It is understandable that there is a corresponding relationship between the target correction amount and the lateral movement parameter. By referring to the range of the distance L between the guide wheel and the correction roller, the specific correspondence can be determined.

[0104] In the specific implementation, after obtaining the pressure values ​​of each guide wheel on the biased side and calculating the average value, the ratio K of the average value to the preset pressure value is calculated, and the target correction amount is determined by the K value. The distance L between the reference guide wheel and the correction roller is obtained. When 1m < L ≤ 2m, for example, when L is 1.1, 1.2, 1.4, 1.6, 1.8, or 2, the product of 0.8 and the target correction amount is the lateral movement parameter. When 0 < L ≤ 1m, for example, when L is 0.1, 0.2, 0.4, 0.6, 0.8, or 1, the target correction amount is the lateral movement parameter. By obtaining the range of the distance, the lateral movement parameter can be determined according to the range and the target correction amount. Then, the motor operation parameters are determined according to the lateral movement parameter.

[0105] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for correcting the deviation of a steel truss girder during jacking, characterized in that, The steel truss girder jacking and correction method is based on a steel truss girder jacking and correction system, which includes: The guiding device includes multiple guide wheels, which are disposed on both sides of the steel truss beam in the width direction for guiding in conjunction with the guide beam on the mounting bracket; A web guiding device includes an electrically driven web guiding device, the electrically driven web guiding device comprising a web guiding motor, a drive gear connected to the web guiding motor, and a rack meshing with the drive gear, wherein a web guiding roller is provided at the end of the rack; and, Deviation monitoring device, used to monitor the deviation status of the steel truss girder during the jacking process; The method for correcting deviation during the jacking of the steel truss includes the following steps: During the jacking process, the actual pressure values ​​of multiple guide wheels are obtained; The side with more guide wheels corresponding to a non-zero actual pressure value is determined as the bias side; Calculate the average pressure of the multiple guide wheels located on the biased side; When the average pressure value is greater than the preset pressure value, calculate the pressure ratio between the average pressure value and the preset pressure value; The correction strategy is determined based on the pressure ratio.

2. The method for correcting deviation during the jacking of steel truss beams as described in claim 1, characterized in that, The deviation monitoring device includes pressure sensors disposed on the end face and / or side surface of the guide wheel, with multiple pressure sensors provided for multiple guide wheels; and / or, The deviation monitoring device includes a total station and / or a theodolite.

3. The method for correcting deviation during the jacking of steel truss beams as described in claim 1, characterized in that, The correction device further includes a manual correction device, which includes: Jacks, used to correspond to the sides of the steel truss beams along their longitudinal extension direction; and, A hoist chain is used to be installed at the end of the longitudinal length of the lower chord of the steel truss.

4. The method for correcting deviation during the jacking of steel truss beams as described in claim 1, characterized in that, The correction device also includes a protective frame, which is laid longitudinally along the steel truss beam. The protective frame is spaced apart from the guide wheels, and the protective frame and the multiple guide wheels form a groove.

5. The method for correcting deviation during the jacking of steel truss beams as described in claim 4, characterized in that, The correction device also includes a slider baffle and a pad beam. The lower end of the guide wheel is welded to the slider baffle, and the upper end of the guide wheel is welded to the pad beam.

6. The method for correcting deviation during the jacking of steel truss beams as described in claim 1, characterized in that, The pressure ratio is K, and a correction strategy is determined based on the pressure ratio, including: When K > 1.3, the jacking system is stopped for inspection. When K≤1.3, the target correction amount is determined, and the correction device is controlled to perform correction based on the target correction amount.

7. The method for correcting deviation during the jacking of steel truss beams as described in claim 6, characterized in that, When K ≤ 1.3, determine the target correction amount, including: When 1.1 < K ≤ 1.3, the target correction amount is determined to be K. First preset correction amount; When 1.05 < K ≤ 1.1, the target correction amount is determined to be K. The second preset correction amount is less than the first preset correction amount; When 1 < K ≤ 1.05, the target correction amount is determined to be zero.

8. The method for correcting deviation during the jacking of steel truss beams as described in claim 6, characterized in that, Based on the target correction amount, control the correction device to perform correction, including: The guide wheel with the maximum pressure among the multiple guide wheels on the biased side is identified as the reference guide wheel; Obtain the distance between the correction roller and the reference guide roller; The lateral movement parameters are determined based on the spacing and the target correction amount; The motor operating parameters are determined based on the lateral displacement parameters; The operation of the correction motor is controlled according to the motor operating parameters.

9. The method for correcting deviation during the jacking of steel truss beams as described in claim 8, characterized in that, The spacing is L. Based on the spacing and the target correction amount, the lateral movement parameters are determined, including: When 1m < L ≤ 2m, the lateral displacement parameter is determined to be 0.

8. Target correction amount; When 0 < L ≤ 1m, the lateral displacement parameter is determined to be 1. Target correction amount.

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