A monitoring method and system for bridge jacking path planning

Abstract

The present invention discloses a monitoring method and system for the jacking path planning of a bridge, which relates to the technical field of bridge jacking monitoring. It includes: Equipment laying: At least two humidity acquisition devices are laid on the jacking track through a laying method to obtain the water vapor content data on the track surface, and at least two water vapor data items are obtained; Grade division: The water vapor content is divided into grades through a first division method to obtain water vapor grade items, and each grade of water vapor grade item corresponds to a different range of water vapor content. The hydraulic pressure of the self-locking hydraulic crawler is divided into grades through a second division method to obtain hydraulic grade items. According to the delineation result of the area, the present invention adjusts the hydraulic pressure of the self-locking hydraulic crawler at different positions on the track to adjust the moving path of the steel box girder, achieving the planning effect of the jacking path and ensuring the smooth jacking of the steel box girder.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge jacking monitoring, and specifically provides a bridge jacking path planning and monitoring method and system. Background Technique

[0002] Bridge jacking is a construction method widely used in bridge construction, mainly for the installation of long-span bridges, bridge segments or the entire bridge structure. The key to this technology is to push the bridge structure from one side to the other side, gradually building it on the predetermined abutment or bearing under the premise of protection. It is often used in areas with complex terrain conditions such as rivers and canyons, avoiding large-scale pile foundation construction, thus reducing the impact on the environment. During the bridge construction process, path design and monitoring are required to collect displacement, stress, temperature and other data in real time during the jacking process, and dynamically monitor the jacking process to ensure timely discovery and handling of potential problems during construction.

[0003] The method and system for steel box girder jacking monitoring based on BIM with the patent publication number CN118211430A first obtain the simulation data of different monitoring parameters and the reference data of each monitoring parameter in each jacking simulation process. Since the monitoring parameters retained after dimensionality reduction are prone to anomalies during the jacking process, the corresponding positions are the positions with potential safety hazards, and the risk manifestations of the simulation data of the monitoring parameters in different jacking simulation processes are different. Therefore, the contribution rates of the risk indexes of different monitoring parameters are different in the subsequent analysis. Therefore, the risk characteristic coefficient obtained reflects the possibility of anomalies in the monitoring parameters during each simulation process, and at the same time facilitates the accurate analysis of the risk indexes of the monitoring parameters in the subsequent process.

[0004] When the above-mentioned and similar technical solutions use self-locking hydraulic crawlers to clamp the track and use the reverse force to push the bridge to move, in rainy and humid weather, a certain amount of water vapor will adhere to the track and form a water film on the track surface, reducing the friction between the self-locking hydraulic crawler and the track. Since the self-locking hydraulic crawlers are respectively arranged on two tracks, when the amount of water vapor on the two tracks is inconsistent, at this time, the friction of the self-locking hydraulic crawlers on the two tracks will be different. When the same hydraulic pressure is applied to the self-locking hydraulic crawlers on the two tracks, the crawling distances of the self-locking hydraulic crawlers on the two tracks will be different, resulting in a situation where the bridge is displaced when the bridge is jacked. Summary of the Invention

[0005] The purpose of the present invention is to provide a bridge jacking path planning and monitoring method and system to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present invention provides the following technical solutions: A bridge jacking path planning and monitoring method and system, including:

[0007] Equipment laying: At least two humidity acquisition devices are laid on the jacking track through a laying method to obtain the water vapor content data on the track surface, and at least two water vapor data items are obtained;

[0008] Level division: The water vapor content is divided into levels through a first division method to obtain water vapor level items. Each level of water vapor level item corresponds to a different range of water vapor content. The hydraulic pressure of the self-locking hydraulic crawler is divided into levels through a second division method to obtain hydraulic level items. Each level of hydraulic level item corresponds to a different pressure data;

[0009] Path planning: The hydraulic level items are adjusted through a first adjustment method, so that the self-locking hydraulic crawler travels the same path at different hydraulic level items under different water vapor level item conditions, and the jacking path is planned to ensure the smooth jacking of the steel box girder;

[0010] Displacement monitoring: The displacement data of the steel box girder is obtained through the target device, and a smooth threshold is set. When the position of the steel box girder exceeds the smooth threshold, the position where the steel box girder exceeds the smooth threshold is obtained to obtain a defect position item. The hydraulic level items are adjusted through a second adjustment method to achieve the displacement monitoring effect of the steel box girder;

[0011] The first adjustment method includes:

[0012] Step 1: Level correspondence, one-to-one correspondence between the water vapor level items and the hydraulic level items;

[0013] Step 2: Range delineation, the track is delineated into regions to obtain at least two level region items, and the track is divided into regions to facilitate the delineation of the water vapor content at different positions on the track;

[0014] Step 3: Contact determination, based on the division result of the level region items, when the self-locking hydraulic crawler contacts the target level region item, the water vapor level item corresponding to the target level region item is obtained, and at the same time the corresponding hydraulic level item is obtained to obtain a target level item;

[0015] Step 4: Pressure adjustment, based on the target level item, the hydraulic pressure of the self-locking hydraulic crawler is adjusted, thereby realizing the adjustment of the hydraulic level items.

[0016] Furthermore, the method for range delineation includes:

[0017] S1: Characteristic region acquisition, taking the corresponding points of the humidity acquisition device on the track as characteristic points, and obtaining the track regions corresponding to adjacent characteristic points to obtain at least two characteristic region items;

[0018] S2: Sampling point arrangement. Set a target number of sampling points in each feature area item, and use the humidity acquisition device to obtain the humidity data of the sampling points respectively to obtain the sampled humidity item.

[0019] S3: Humidity set. Integrate the sampled humidity items at the same level according to the water vapor level item to obtain at least two humidity integration items. Use the sampling points corresponding to the sampled humidity items at the end positions of the humidity integration items as the fixed points, and delineate the range to obtain the level area item.

[0020] Furthermore, the laying method includes: obtaining the length data of the track to obtain the track length item, setting the division item, dividing the track length item based on the division item, using the position of the division item in the track length item as the division point to obtain at least one division point, and using the division point as the laying point to lay the humidity acquisition device.

[0021] Furthermore, the first division method includes:

[0022] M1: Threshold setting. Set the time threshold to obtain the time threshold item, and obtain the humidity data at the target position based on the time threshold item to obtain the extremely high humidity value, the extremely low humidity value, and the average humidity value.

[0023] M2: Range division. Set the fluctuation item, increase or decrease the amplitude of the average humidity value based on the fluctuation item to obtain the extremely low fluctuation value and the extremely high fluctuation value. Divide the water vapor content into levels based on the extremely high humidity value, the extremely high fluctuation value, the extremely low humidity value, the extremely low fluctuation value, and the average humidity value to obtain the water vapor level item.

[0024] Furthermore, the second division method includes: obtaining the standard hydraulic pressure data of the target self-locking hydraulic crawler driving the steel box girder to be jacked to obtain the standard pressure item, setting the cutting value, cutting the standard pressure item based on the cutting value, obtaining the cutting pressure item based on the difference between the standard pressure item and the cutting value, and dividing the hydraulic pressure of the self-locking hydraulic crawler into levels based on the increase and decrease results of the cutting pressure item and the standard pressure item to obtain the hydraulic level item.

[0025] Furthermore, the method for setting the stable threshold includes:

[0026] N1: Data acquisition. Obtain the length data and width data of the target steel box girder to obtain the target data item, and at the same time obtain the relative position between the target steel box girder in the stationary state and the track to obtain the track position item.

[0027] N2: Trajectory prediction. Predict the displacement change during the jacking of the target steel box girder based on the target data item and the track position item to obtain the displacement prediction item.

[0028] N3: Steady term setting. Set the steady term. Based on the combined result of the displacement prediction term and the steady term, obtain the steady threshold.

[0029] Furthermore, the method for obtaining the defect position term includes: regional division. Set the division term. Based on the division term, divide the target steel box girder into regions, obtaining two regional division terms. Based on the matching relationship between the track and the regional division terms, match the regional division terms with the track to obtain the defect position term.

[0030] Furthermore, the second adjustment method includes:

[0031] Z1: First target determination. Based on the defect position term, select the track corresponding to the defect position term as the first target track, and set the self-locking hydraulic crawler on the first target track as the first target crawler.

[0032] Z2: Pressure superposition. Based on the hydraulic level term corresponding to the first target crawler, perform pressure superposition to obtain the superposition level term, and adjust the hydraulic pressure of the first target crawler based on the superposition level term.

[0033] Furthermore, the second adjustment method also includes:

[0034] X1: Second target determination. Based on the defect position term, select the track that does not correspond to the defect position term as the second target track, and set the self-locking hydraulic crawler on the second target track as the second target crawler.

[0035] X2: Pressure reduction. Based on the hydraulic level term corresponding to the second target crawler, perform pressure reduction to obtain the reduction level term, and adjust the hydraulic pressure of the second target crawler based on the reduction level term.

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

[0037] This bridge jacking path planning and monitoring method and system obtain the water vapor content data on the track surface by laying humidity acquisition devices, and divide the water vapor content data into at least two levels. Each level of water vapor level corresponds to a different range of water vapor content. Divide the track according to the data obtained by the humidity acquisition device, circle the regions of the track according to the result of the level division. At the same time, divide the hydraulic pressure of the self-locking hydraulic crawler into at least three levels. Each level of hydraulic level corresponds to different pressure data, and the hydraulic levels correspond to the water vapor levels respectively. Thus, according to the result of the region circling, adjust the hydraulic pressure of the self-locking hydraulic crawler at different positions on the track, and adjust the movement path of the steel box girder by adjusting the hydraulic pressure of the self-locking hydraulic crawler at different sections of the track, thereby achieving the planning effect of the jacking path and ensuring the smooth jacking of the steel box girder.

[0038] Meanwhile, during the incremental launching of the steel box girder, the total station is used to obtain the stability data of the steel box girder, and the stability threshold is set according to the incremental launching path of the steel box girder. When the displacement of the steel box girder exceeds the stability threshold, the position where the steel box girder exceeds the stability threshold is obtained, and the hydraulic grade of the self-locking hydraulic crawler on the same side track as the position is adjusted according to the position, realizing the displacement monitoring and adjustment effect of the steel box girder. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the relationship among equipment laying, grade division, path planning and displacement monitoring of the present invention;

[0040] Figure 2 Schematic diagram of the flow of the first adjustment method of the present invention;

[0041] Figure 3 Schematic diagram of the distribution of the track hydraulic grade of the present invention;

[0042] Figure 4 Schematic diagram of the distribution of sampling points of the present invention;

[0043] Figure 5 Schematic diagram of the stability threshold of the present invention;

[0044] Figure 6 Schematic diagram of the division items of the present invention;

[0045] Figure 7 Schematic diagram of the pressure superposition of the first target crawler of the present invention;

[0046] Figure 8 Schematic diagram of the pressure reduction of the second target crawler of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than 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 efforts shall fall within the protection scope of the present invention.

[0048] When fixing the steel box girder on the top of the self-locking hydraulic crawlers on two tracks, if the crawling distances of the two self-locking hydraulic crawlers are inconsistent, it will cause the steel box girder to gradually displace and deflect during the jacking process. Moreover, as the jacking progresses, the displacement deflection of the steel box girder will gradually increase. The technical solution provided by this application first lays at least two humidity acquisition devices on the track according to the laying method to obtain the water vapor content data on the track surface, and divides the water vapor content data into at least two levels. Each level of water vapor level corresponds to a different range of water vapor content. The track is classified according to the data obtained by the humidity acquisition device, and the area of the track is delimited according to the classification result. At the same time, the hydraulic pressure of the self-locking hydraulic crawler is divided into at least three levels. Each level of hydraulic pressure corresponds to different pressure data, and the hydraulic levels correspond to the water vapor levels respectively. Thus, according to the delimitation result of the area, the hydraulic pressure of the self-locking hydraulic crawler is adjusted at different positions on the track, and the movement path of the steel box girder is adjusted by adjusting the hydraulic pressure of the self-locking hydraulic crawler on different sections of the track, thereby achieving the planning effect of the jacking path and ensuring the stable jacking effect of the steel box girder. During the jacking process of the steel box girder, the stability data of the steel box girder is obtained through the target device, and a stability threshold is set according to the jacking path of the steel box girder. When the displacement of the steel box girder exceeds the stability threshold, the position where the steel box girder exceeds the stability threshold is obtained, and the hydraulic level of the self-locking hydraulic crawler on the track on the same side as the position is adjusted according to the position, realizing the displacement monitoring and adjustment effect of the steel box girder.

[0049] As Figure 1 - Figure 2 shown, the present invention provides a technical solution: a bridge jacking path planning and monitoring method and system, including:

[0050] Equipment laying: At least two humidity acquisition devices are laid on the pushing track through a laying method to obtain water vapor content data on the track surface, resulting in at least two water vapor data items; Grade division: The water vapor content is divided into grades through a first division method to obtain water vapor grade items. Each grade of water vapor grade item corresponds to a different range of water vapor content. The hydraulic pressure of the self-locking hydraulic crawler is divided into grades through a second division method to obtain hydraulic grade items. Each grade of hydraulic grade item corresponds to a different magnitude of pressure data; Path planning: The hydraulic grade items are adjusted through a first adjustment method so that the self-locking hydraulic crawler travels the same path under different water vapor grade item conditions with different hydraulic grade items, and the pushing path is planned to ensure the smooth pushing of the steel box girder; Displacement monitoring: The displacement data of the steel box girder is obtained through a target device, and the target device is a total station. A smooth threshold is set. When the position of the steel box girder exceeds the smooth threshold, the position where the steel box girder exceeds the smooth threshold is obtained to get the defect position item. The hydraulic grade items are adjusted through a second adjustment method to achieve the displacement monitoring effect of the steel box girder; The first adjustment method includes: Step 1: Grade correspondence, corresponding the water vapor grade items and the hydraulic grade items one by one; Step 2: Range delineation, delineating areas of the track to obtain at least two grade area items, and dividing the track into areas to facilitate the delineation of the water vapor content at different positions on the track; Step 3: Contact determination, based on the division result of the grade area items, when the self-locking hydraulic crawler contacts the target grade area item, obtain the water vapor grade item corresponding to the target grade area item, and at the same time obtain the corresponding hydraulic grade item to get the target grade item; Step 4: Pressure adjustment, based on the target grade item, adjust the hydraulic pressure of the self-locking hydraulic crawler, thereby realizing the adjustment of the hydraulic grade items.

[0051] It should be noted that the humidity acquisition device is a humidity sensor. Multiple humidity sensors are arranged on the track to obtain water vapor content data on the track surface. By dividing the water vapor content into grades, the water vapor content is divided into three grades: dry, normal, and wet. Each grade corresponds to a different range of water vapor content. And the hydraulic pressure of the self-locking hydraulic crawler is divided into three grades: low pressure, normal pressure, and high pressure. Each grade of hydraulic pressure corresponds to a different magnitude of pressure data. The water vapor content of the three grades of dry, normal, and wet respectively corresponds to the hydraulic pressure of the three grades of low pressure, normal pressure, and high pressure. According to the water vapor data on the track surface obtained by the humidity sensor, areas of the track are delineated. Each area corresponds to a different grade of water vapor content. When the self-locking hydraulic crawler contacts the delineated area, obtain the water vapor grade corresponding to the target area, and at the same time obtain the corresponding hydraulic grade. Based on the hydraulic grade, adjust the hydraulic pressure of the self-locking hydraulic crawler, thereby realizing the adjustment of the hydraulic grade items.

[0052] Such as Figure 3As shown, in the specific implementation process, the humidity data of the two tracks obtained by the humidity sensor are as follows: For track A, in the range of 0 - 10m, the humidity level is normal; in the range of 10 - 20m, the humidity level is wet; in the range of 20 - 30m, the humidity level is normal; in the range of 30 - 40m, the humidity level is wet. For track B, in the range of 0 - 8m, the humidity level is normal; in the range of 8 - 18m, the humidity level is wet; in the range of 18 - 25m, the humidity level is normal; in the range of 25 - 35m, the humidity level is wet; in the range of 35 - 40m, the humidity level is normal. At this time, when the self-locking hydraulic crawlers fixed on track A and track B complete the fixation of the steel box girder and carry out the jacking work, for the self-locking hydraulic crawler on track A, in the range of 0 - 10m, the hydraulic level is normal pressure; in the range of 10 - 20m, the hydraulic level is high pressure; in the range of 20 - 30m, the hydraulic level is normal pressure; in the range of 30 - 40m, the hydraulic level is high pressure. For the self-locking hydraulic crawler on track B, in the range of 0 - 8m, the hydraulic level is normal pressure; in the range of 8 - 18m, the hydraulic level is high pressure; in the range of 18 - 25m, the hydraulic level is normal pressure; in the range of 25 - 35m, the hydraulic level is high pressure; in the range of 35 - 40m, the hydraulic level is normal pressure. According to the specific humidity data on the two tracks, the hydraulic pressure of the two self-locking hydraulic crawlers in different sections is adjusted to ensure that the jacking paths of the two self-locking hydraulic crawlers for the steel box girder always remain unified, thus achieving the planning effect of the jacking path of the steel box girder, and jacking the steel box girder according to the planned path, improving the stability during the jacking process of the steel box girder.

[0053] The method for delineating the range includes: S1: Feature area acquisition. Set the corresponding points of the humidity acquisition device on the track as feature points, and obtain the track areas corresponding to adjacent feature points to obtain at least two feature area items; S2: Sampling point arrangement. Set a target number of sampling points in each feature area item, and obtain the humidity data of the sampling points through the humidity acquisition device respectively to obtain sampling humidity items; S3: Humidity set. Integrate the sampling humidity items in the same level according to the water vapor level items to obtain at least two humidity integration items. Use the sampling points corresponding to the sampling humidity items at the end point positions of the humidity integration items as the delineation points to delineate the range and obtain the level area items.

[0054] It should be noted that the set target number is 10. In the area between two adjacent humidity sensors, 10 sampling points are arranged, and the humidity data of the sampling points are obtained through the humidity sensors respectively. According to the division result of the water vapor level, the humidity data of the sampling points that are adjacent and within the same level are integrated, and based on the integration result, the sampling points corresponding to the sampling humidity at the end positions of the integration result are used as the fixed points to define the range, and the level area item is obtained.

[0055] As Figure 4 shown, it should be noted that 10 sampling points are set between two humidity sensors A and B, which are respectively set as sampling point 1 - sampling point 10. According to the acquisition result of the humidity sensor, the water vapor level of sampling point 1 - sampling point 4 is normal, and the water vapor level of sampling point 4 - sampling point 10 is humid. At this time, there are two integration results, and the endpoints of the two integration results are sampling point 1, sampling point 4, and sampling point 10 respectively. The points corresponding to the sampling points are used as the fixed points to define the range.

[0056] The laying method includes: obtaining the length data of the track to get the track length item, setting the division item, dividing the track length item based on the division item, using the position where the division item is located in the track length item as the division point to obtain at least one division point, and using the division point as the laying point to lay the humidity acquisition device.

[0057] It should be noted that first, the specific length of the track is obtained. The set division item is 10m, and a division point is set every 10m as the laying point to lay the humidity acquisition device.

[0058] In the specific implementation process, the lengths of two target tracks are obtained as 100m. At this time, according to the set 10m division item, 10 laying points are arranged in each of the two tracks for laying the humidity acquisition device.

[0059] The first division method includes: M1: Threshold setting, setting the time threshold to get the time threshold item, and obtaining the humidity data at the target position based on the time threshold item to get the extremely high humidity value, the extremely low humidity value, and the average humidity value; M2: Range division, setting the fluctuation item, increasing and decreasing the amplitude of the average humidity value based on the fluctuation item to get the extremely low fluctuation value and the extremely high fluctuation value, and dividing the water vapor content into levels based on the extremely high humidity value, the extremely high fluctuation value, the extremely low humidity value, the extremely low fluctuation value, and the average humidity value to get the water vapor level item.

[0060] It should be noted that the set time threshold is within one year. The humidity data of the target location within one year is obtained, and the maximum humidity, minimum humidity, and average humidity are respectively set as the extremely high humidity value, extremely low humidity value, and average humidity value. The set fluctuation term is 25% of the extremely low humidity value. The average humidity value is increased or decreased by the amplitude according to the fluctuation term to obtain multiple water vapor content ranges.

[0061] In the specific implementation process, the extremely high humidity value, extremely low humidity value, and average humidity value of the target location are obtained as 80%, 40%, and 60% respectively. At this time, according to the set fluctuation term, the fluctuation term is 25% of the extremely low humidity value, that is, 10%. The amplitude increase and decrease results of the fluctuation term and the average humidity value are 70% and 50% respectively. At this time, according to the set three levels of dry, normal, and wet, the water vapor content is classified into levels, and the water vapor ranges corresponding to dry, normal, and wet are 40%-50%, 50%-70%, and 70%-80% respectively.

[0062] The second classification method includes: obtaining the standard hydraulic pressure data of the target self-locking hydraulic crawler driving the steel box girder to be jacked, obtaining the standard pressure term, setting the cutting value, cutting the standard pressure term based on the cutting value, obtaining the cutting pressure term based on the difference between the standard pressure term and the cutting value, and classifying the hydraulic pressure of the self-locking hydraulic crawler based on the increase and decrease results of the cutting pressure term and the standard pressure term to obtain the hydraulic level term.

[0063] It should be noted that the set cutting value is 10%. According to the combined result of the standard hydraulic pressure data of the target self-locking hydraulic crawler driving the steel box girder to be jacked and the cutting value, and increasing and decreasing the combined result with the standard hydraulic pressure data, three pressure data are obtained.

[0064] In the specific implementation process, assume that the total weight of the steel box girder is 200 tons, the gravitational acceleration is 9.81 m / s², and the number of hydraulic crawlers is 2, which are respectively set on two tracks. At this time, the total gravity of the steel box girder is:

[0065] ,

[0066] The weight borne by each hydraulic crawler:

[0067] ,

[0068] The pressure required for each crawler: Assume that the effective area of the hydraulic crawler is 0.1 m²,

[0069] ,

[0070] At this time, the pressure is increased or decreased according to the cutting value, and three pressure data are obtained as 8.829 MPa, 9.81 MPa, and 10.791 MPa, corresponding to low pressure, normal pressure, and high pressure respectively.

[0071] The method for setting the stability threshold includes: N1: data acquisition, obtaining the length data and width data of the target steel box girder to obtain the target data items, and at the same time obtaining the relative position between the target steel box girder and the track in the stationary state to obtain the track position items; N2: trajectory prediction, predicting the displacement change during the jacking of the target steel box girder based on the target data items and the track position items to obtain the displacement prediction items; N3: stability item setting, setting the stability items, and obtaining the stability threshold based on the combined result of the displacement prediction items and the stability items.

[0072] As Figure 5 shown, it should be noted that the set stability item is ±5 mm, and the stability threshold is the combination of the displacement prediction item of the steel box girder and ±5 mm.

[0073] The method for obtaining the defect position items includes: area division, setting the division items, dividing the area of the target steel box girder based on the division items to obtain two area division items, and matching the area division items with the track based on the matching relationship between the track and the area division items to obtain the defect position items.

[0074] As Figure 6 shown, it should be noted that the division item is 50%, and the steel box girder is divided into left and right parts according to the 50% division standard.

[0075] The second adjustment method includes: Z1: first target determination, based on the defect position items, selecting the track corresponding to the defect position items as the first target track, and setting the self-locking hydraulic crawler on the first target track as the first target crawler; Z2: pressure superposition, performing pressure superposition based on the hydraulic grade items corresponding to the first target crawler to obtain the superposition grade items, and adjusting the hydraulic pressure of the first target crawler based on the superposition grade items.

[0076] As Figure 7 shown, in the specific implementation process, the two tracks A and B are parallel to each other. When the pressure grade of the self-locking hydraulic crawler on track A is normal pressure and the pressure grade of the self-locking hydraulic crawler on track B is high pressure, but the steel box girder deflects towards track A, at this time, the self-locking hydraulic crawler on track A is selected as the first target crawler, and pressure superposition is performed based on the hydraulic grade items corresponding to the first target crawler to obtain the superposition grade items, and the superposition grade item is high pressure.

[0077] The second adjustment method further includes: X1: determining the second target, based on the defect position item, selecting the track that does not correspond to the defect position item as the second target track, and setting the self-locking hydraulic crawler on the second target track as the second target crawler; X2: pressure reduction, reducing the pressure based on the hydraulic level item corresponding to the second target crawler to obtain a reduced level item, and adjusting the hydraulic pressure of the second target crawler based on the reduced level item.

[0078] As Figure 8 shown, in a specific implementation process, the two tracks A and B are parallel to each other. When the pressure level of the self-locking hydraulic crawler on track A is high pressure and the pressure level of the self-locking hydraulic crawler on track B is normal pressure, but the steel box girder deflects towards A, at this time, the self-locking hydraulic crawler on track B is selected and set as the second target crawler, and the pressure is reduced based on the hydraulic level item corresponding to the second target crawler to obtain a reduced level item, and the reduced level item is low pressure.

[0079] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended embodiments and their equivalents.

Claims

1. A bridge pushing path planning and monitoring method, characterized in that: include: Equipment laying: at least two humidity acquisition devices are laid on the push track by a laying method to acquire water vapor content data on the track surface and obtain at least two water vapor data items; Grade division: The water vapor content is graded by the first division method to obtain water vapor grade items. Each grade of water vapor grade item corresponds to a different range of water vapor content. The hydraulic pressure of the self-locking hydraulic crawler is graded by the second division method to obtain hydraulic grade items. Each grade of hydraulic grade item corresponds to pressure data of different magnitudes. Path planning: The hydraulic level item is adjusted by the first adjustment method, so that the self-locking hydraulic crawler can travel the same path with different hydraulic level items under different water vapor level item conditions, and the jacking path is planned to ensure the smooth jacking of the steel box girder; Displacement monitoring: The displacement data of the steel box girder is obtained through the target device, and a stable threshold is set. When the position of the steel box girder exceeds the stable threshold, the position of the steel box girder exceeding the stable threshold is obtained, and the defect position item is obtained. The hydraulic level item is adjusted through the second adjustment method to achieve the displacement monitoring effect of the steel box girder; The first adjustment method comprises: Step 1: Grade correspondence, correspond the water vapor grade items to the hydraulic grade items one by one; Step 2: Scope the track, and obtain at least two level area items to divide the track into regions, so as to facilitate the scoping of water vapor content at different positions of the track; Step 3: contact determination, based on the division result of the grade area item, when the self-locking hydraulic crawler contacts the target grade area item, the water vapor grade item corresponding to the target grade area item is obtained, and the corresponding hydraulic grade item is obtained at the same time to obtain the target grade item; Step 4: Pressure regulation, based on the target level item, adjust the hydraulic pressure of the self-locking hydraulic crawler, thereby achieving the adjustment of the hydraulic level item.

2. A bridge pushing path planning and monitoring method according to claim 1, characterized in that: The scoping methods include: S1: feature area acquisition, setting the corresponding point of the humidity acquisition device on the track as the feature point, acquiring the track area corresponding to the adjacent feature point, and obtaining at least two feature area items; S2: Sampling point arrangement: set a target number of sampling points in each feature area item, obtain humidity data of the sampling points through humidity acquisition equipment, and obtain sampled humidity items; S3: Humidity set. According to the water vapor level item, the sampled humidity items at the same level are integrated to obtain at least two humidity integration items. The sampling points corresponding to the sampled humidity items at the end points of the humidity integration items are used as the circle points to circle the range and obtain the level area items.

3. A bridge pushing path planning and monitoring method according to claim 1, characterized in that: The laying method includes: obtaining the length data of the track, obtaining the track length item, setting the division item, dividing the track length item based on the division item, using the position of the division item in the track length item as the division point, obtaining at least one division point, using the division point as the laying point, and laying the humidity acquisition device.

4. A bridge pushing path planning and monitoring method according to claim 1, characterized in that: The first division method includes: M1: Threshold setting, set the time threshold, obtain the time threshold item, obtain the humidity data of the target location based on the time threshold item, and obtain the extreme high humidity value, the extreme low humidity value and the average humidity value; M2: Range division, set the fluctuation item, increase or decrease the amplitude of the average humidity value based on the fluctuation item to obtain the extremely low fluctuation value and the extremely high fluctuation value, and classify the water vapor content based on the extremely high humidity value, the extremely high fluctuation value, the extremely low humidity value, the extremely low fluctuation value and the average humidity value to obtain the water vapor grade item.

5. The bridge pushing path planning and monitoring method according to claim 1 is characterized by: The second classification method includes: obtaining standard hydraulic pressure data of the target self-locking hydraulic crawler driving the steel box girder to push, obtaining a standard pressure item, setting a cutting value, cutting the standard pressure item based on the cutting value, obtaining a cutting pressure item based on the difference between the standard pressure item and the cutting value, and classifying the hydraulic pressure of the self-locking hydraulic crawler into grades based on the increase or decrease results of the cutting pressure item and the standard pressure item to obtain a hydraulic grade item.

6. A bridge pushing path planning and monitoring method according to claim 1, characterized in that: The method for setting the stable threshold comprises: N1: Data acquisition, obtaining the length data and width data of the target steel box girder to obtain the target data item, and at the same time obtaining the relative position of the target steel box girder and the track in a static state to obtain the track position item; N2: trajectory prediction, based on the target data item and the track position item, predict the displacement change of the target steel box girder during the jacking process to obtain the displacement prediction item; N3: Stable term setting, set the stable term, and obtain the stable threshold based on the combination of the displacement prediction term and the stable term.

7. A bridge pushing path planning and monitoring method according to claim 1, characterized in that: The method for obtaining the defect location item includes: area division, setting division items, dividing the target steel box girder into areas based on the division items to obtain two area division items, matching the area division items with the track based on the matching relationship between the track and the area division items to obtain the defect location item.

8. The bridge pushing path planning and monitoring method according to claim 1 is characterized by: The second adjustment method comprises: Z1: first target determination, based on the defective position item, selecting the track corresponding to the defective position item as the first target track, and setting the self-locking hydraulic crawler on the first target track as the first target crawler; Z2: Pressure superposition: pressure superposition is performed based on the hydraulic level item corresponding to the first target crawler to obtain a superposition level item, and the hydraulic pressure of the first target crawler is adjusted based on the superposition level item.

9. A bridge pushing path planning and monitoring method according to claim 1, characterized in that: The second adjustment method further includes: X1: second target determination, based on the defective position item, selecting the track that does not correspond to the defective position item as the second target track, and setting the self-locking hydraulic crawler on the second target track as the second target crawler; X2: pressure reduction, performing pressure reduction based on the hydraulic level item corresponding to the second target crawler to obtain a reduced level item, and adjusting the hydraulic pressure of the second target crawler based on the reduced level item.

10. A bridge pushing path planning and monitoring system, characterized in that: A bridge jacking path planning and monitoring method as described in any one of claims 1 to 9 is used.

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