Bridge incremental launching path planning monitoring method and system

Abstract

The invention discloses a bridge incremental launching path planning monitoring method and system, and relates to the technical field of bridge incremental launching monitoring. Comprising the following steps: equipment laying: laying at least two pieces of humidity acquisition equipment on a pushing track through a laying method for acquiring water vapor content data on the surface of the track to obtain at least two water vapor data items; grading: grading the water vapor content through a first grading method to obtain water vapor grade items, the water vapor grade items of each grade corresponding to the water vapor content in different ranges, and grading the hydraulic pressure of the self-locking hydraulic crawler through a second grading method to obtain hydraulic grade items. According to the area delineation result, the hydraulic force of the self-locking hydraulic crawl device is adjusted at different positions of the track so as to adjust the moving path of the steel box girder, the planning effect on the pushing path is achieved, and stable pushing of the steel box girder is guaranteed.

Description

Technical Field

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

[0002] Bridge pushing is a construction method widely used in bridge construction. It is mainly used for the installation of large-span bridges, bridge segments or entire bridge structures. The key to this technology is to push the bridge structure from one side to the other, so that it can be gradually established on the predetermined abutments or supports under the premise of protecting the products. It is often used in areas with complex terrain conditions such as rivers and canyons, avoiding large-scale pile construction and thus reducing the impact on the environment. During the bridge construction process, path design and monitoring are required, and real-time collection of displacement, stress, temperature and other data during the pushing process is required. Dynamic monitoring of the pushing process is carried out to ensure that potential problems are discovered and dealt with in a timely manner during the construction process.

[0003] The BIM-based steel box girder jacking monitoring method and system with patent publication number CN118211430A first obtains the simulation data of different monitoring parameters of the steel box girder in each jacking simulation process and the baseline data of each monitoring parameter. Since the monitoring parameters retained after dimensionality reduction are prone to abnormalities in the jacking process, their corresponding positions are the positions where safety hazards exist, and the risk performance of the simulation data of the monitoring parameters in different jacking simulation processes is different. In the subsequent analysis, the contribution rates of the risk indexes of different monitoring parameters are different. Therefore, the acquired risk characteristic coefficient reflects the possibility of abnormal risk of the monitoring parameters in each simulation process, and is convenient for the subsequent accurate analysis of the risk index of the monitoring parameters.

[0004] When the above-mentioned and similar technical solutions use the self-locking hydraulic crawler to clamp the track and use the reverse force to push the bridge to move, in rainy 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 crawler is respectively arranged on two tracks, when the amount of water vapor on the two tracks is inconsistent, this will cause a difference in the friction of the self-locking hydraulic crawlers on the two tracks. At this time, when the same hydraulic pressure is applied to the self-locking hydraulic crawlers on the two tracks, the crawling distance of the self-locking hydraulic crawlers on the two tracks will be longer and shorter, which will cause the bridge to shift when the bridge is pushed up. 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-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bridge jacking path planning and monitoring method and system, comprising:

[0007] 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;

[0008] 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.

[0009] 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;

[0010] 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;

[0011] The first adjustment method comprises:

[0012] Step 1: Grade correspondence, correspond the water vapor grade items to the hydraulic grade items one by one;

[0013] 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;

[0014] 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;

[0015] 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.

[0016] Furthermore, the method of defining the scope includes:

[0017] 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;

[0018] 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;

[0019] 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.

[0020] Furthermore, 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.

[0021] Furthermore, the first division method includes:

[0022] 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;

[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, 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.

[0024] Furthermore, the second division method includes: obtaining standard hydraulic pressure data of the target self-locking hydraulic crawler to drive 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 dividing 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.

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

[0026] 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;

[0027] 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;

[0028] 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.

[0029] Furthermore, 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, 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 location item.

[0030] Furthermore, the second adjustment method includes:

[0031] 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;

[0032] 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.

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

[0034] 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;

[0035] 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.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] The bridge jacking path planning and monitoring method and system, by laying humidity acquisition equipment, is used to acquire 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, and the track is graded according to the data acquired by the humidity acquisition equipment, and the track is zoned according to the grade division results. At the same time, the hydraulic pressure of the self-locking hydraulic crawler is divided into at least three levels, and each level of hydraulic pressure corresponds to pressure data of different sizes, and the hydraulic levels correspond to the water vapor levels, respectively. Therefore, according to the zone delineation results, the hydraulic pressure of the self-locking hydraulic crawler is adjusted at different positions of the track, and the moving path of the steel box girder is adjusted according to 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 smooth jacking of the steel box girder.

[0038] At the same time, during the pushing process of the steel box girder, the stability data of the steel box girder is obtained through the total station, and the stability threshold is set according to the pushing path of the steel box girder. When the displacement of the steel box girder exceeds the stability threshold, the position of the steel box girder exceeding the stability threshold is obtained, and the hydraulic level of the self-locking hydraulic crawler on the same side track as the position is adjusted according to the position, thereby realizing the displacement monitoring and adjustment effect of the steel box girder. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the relationship between equipment laying, grading, path planning and displacement monitoring of the present invention;

[0040] Figure 2 It is a schematic flow chart of the first adjustment method of the present invention;

[0041] Figure 3 It is a schematic diagram of the rail hydraulic level distribution of the present invention;

[0042] Figure 4 This is a schematic diagram of the sampling point distribution of the present invention;

[0043] Figure 5 It is a schematic diagram of the stable threshold value of the present invention;

[0044] Figure 6 It is a schematic diagram of the division items of the present invention;

[0045] Figure 7 It is a schematic diagram of the pressure superposition of the first target crawler of the present invention;

[0046] Figure 8 This is a schematic diagram of the second objective crawler pressure reduction of the present invention. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] When the steel box girder is fixed on the top of the self-locking hydraulic crawler on the two tracks, when the crawling distances of the two self-locking hydraulic crawlers are inconsistent, the steel box girder will gradually appear displacement and deflection during the pushing process, and as the displacement progresses, the displacement and deflection of the steel box girder will gradually increase. The technical solution provided by the present application firstly lays at least two humidity acquisition devices on the track according to the laying method, so as 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, divides the track into levels according to the data obtained by the humidity acquisition device, and delineates the track area according to the level division results, and divides the hydraulic pressure of the self-locking hydraulic crawler into at least three levels, and each level of liquid The pressure level corresponds to pressure data of different sizes, and the hydraulic level corresponds to the water vapor level. Therefore, according to the delineation result of the area, the hydraulic pressure of the self-locking hydraulic crawler is adjusted at different positions of the track. The moving path of the steel box girder is adjusted by adjusting the hydraulic pressure of the self-locking hydraulic crawler in different sections of the track, thereby realizing the planning effect of the jacking path and ensuring the smooth jacking effect of the steel box girder. In the process of jacking the steel box girder, the stability data of the steel box girder is obtained through the target equipment, and the 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 of the steel box girder exceeding the stability threshold is obtained, and the hydraulic level of the self-locking hydraulic crawler on the same side of the track as the position is adjusted according to the position, thereby realizing the displacement monitoring and adjustment effect of the steel box girder.

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

[0050] Equipment laying: at least two humidity acquisition devices are laid on the jacking track through the laying method to obtain the 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 through the first division method to obtain water vapor grade items, each grade of water vapor grade items corresponds to a different range of water vapor content, and the hydraulic pressure of the self-locking hydraulic crawler is graded through the second division method to obtain hydraulic grade items, each grade of hydraulic grade items corresponds to pressure data of different sizes; path planning: the hydraulic grade items are adjusted through the first adjustment method to make the self-locking hydraulic crawler travel the same path with different hydraulic grade items under different water vapor grade 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, the target device is a total station, and a stable threshold is set. When the steel When the position of the 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 by the second adjustment method to achieve the displacement monitoring effect of the steel box girder; the first adjustment method includes: step one: level correspondence, the water vapor level item is corresponded to the hydraulic level item one by one; step two: range delineation, the track is delineated in an area, at least two level area items are obtained, and the track is divided into areas to facilitate the delineation of the water vapor content at different positions of the track; step three: contact judgment, based on the division result of the level area item, when the self-locking hydraulic crawler contacts the target level area item, the water vapor level item corresponding to the target level area item is obtained, and the corresponding hydraulic level item is obtained at the same time to obtain the target level item; step four: pressure regulation, based on the target level item, the hydraulic pressure of the self-locking hydraulic crawler is adjusted to achieve the adjustment of the hydraulic level item.

[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. The water vapor content is divided into three levels by level classification, namely dry, normal and wet. Each level corresponds to a different range of water vapor content, and the hydraulic pressure of the self-locking hydraulic crawler is divided into three levels, namely low pressure, normal pressure and high pressure. The hydraulic pressure of each level corresponds to pressure data of different sizes. The water vapor content of the three levels of dry, normal and wet corresponds to the hydraulic pressure of the three levels of low pressure, normal pressure and high pressure respectively. According to the water vapor data on the track surface obtained by the humidity sensor, the track is delineated, and each area corresponds to a different level of water vapor content. When the self-locking hydraulic crawler contacts the delineated area, the water vapor level corresponding to the target area is obtained, and the corresponding hydraulic level is obtained at the same time. The hydraulic pressure of the self-locking hydraulic crawler is adjusted based on the hydraulic level, thereby realizing the adjustment of the hydraulic level item.

[0052] like Figure 3As shown, in the specific implementation process, the humidity data of the two tracks are obtained by the humidity sensor as follows: when the humidity level of track A is within the range of 0-10m, it is normal; when the humidity level is within the range of 10-20m, it is wet; when the humidity level is within the range of 20-30m, it is normal; and when the humidity level is within the range of 30-40m, it is wet; when the humidity level of track B is within the range of 0-8m, it is normal; when the humidity level is within the range of 8-18m, it is wet; when the humidity level is within the range of 18-25m, it is normal; when the humidity level is within the range of 25-35m, it is wet; and when the humidity level is within the range of 35-40m, it is normal. At this time, when the self-locking hydraulic crawlers fixed on track A and track B respectively fix the steel box girder and perform the jacking work, the hydraulic level of the self-locking hydraulic crawler on track A is normal pressure within the range of 0-10m, and is wet within the range of 10-20 m, the hydraulic level is high pressure, within the range of 20-30m, the hydraulic level is normal pressure, within the range of 30-40m, the hydraulic level is high pressure, the self-locking hydraulic crawler on track B has a hydraulic level of normal pressure in the range of 0-8m, 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, and in the range of 35-40m, the hydraulic level is normal pressure. The hydraulic pressure of the two self-locking hydraulic crawlers on different sections is adjusted according to the specific humidity data on the two tracks to ensure that the two self-locking hydraulic crawlers always maintain a unified pushing path for the steel box girder, thereby realizing the planning effect of the pushing path of the steel box girder, and pushing the steel box girder according to the planned path, thereby improving the stability of the steel box girder during the pushing process.

[0053] The method for range delineation includes: 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, setting a target number of sampling points in each feature area item, and obtaining the humidity data of the sampling points through the humidity acquisition device to obtain the sampled humidity items; S3: humidity aggregation, integrating the sampled humidity items at the same level according to the water vapor level item, obtaining at least two humidity integration items, and using the sampling point corresponding to the sampled humidity item at the end point position of the humidity integration item as the delineation point to delineate the range and obtain the level area item.

[0054] It should be noted that the target number is set to 10. In the area between two adjacent humidity sensors, 10 sampling points are arranged, and the humidity data of the sampling points are obtained respectively through the humidity sensors. According to the results of the water vapor level division, the humidity data of the adjacent sampling points in the same level are integrated, and according to the results of the integration, the sampling points corresponding to the sampling humidity at the endpoint of the integration result are used as the circle points to circle the range and obtain the level area items.

[0055] like Figure 4 As shown, it should be noted that 10 sampling points are set between the two humidity sensors AB, which are set as sampling point 1 to sampling point 10 respectively. According to the acquisition results of the humidity sensor, the water vapor level of sampling point 1 to sampling point 4 is normal, and the water vapor level of sampling point 4 to 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 circle points to circle the range.

[0056] 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.

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

[0058] In the specific implementation process, the length of the two target tracks is obtained to be 100m. At this time, according to the set 10m division item, 10 laying points are arranged in the two tracks respectively for laying the humidity acquisition equipment.

[0059] The first division method includes: M1: threshold setting, setting the time threshold, obtaining the time threshold item, obtaining the humidity data of the target location based on the time threshold item, and obtaining the extremely high humidity value, the extremely low humidity value and the average humidity value; M2: range division, setting the fluctuation item, increasing or decreasing the amplitude of the average humidity value based on the fluctuation item, obtaining 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 obtain the water vapor level item.

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

[0061] During the specific implementation process, the extremely high humidity value, extremely low humidity value and average humidity value of the target location are obtained to be 80%, 40% and 60% respectively. At this time, according to the set fluctuation item, the fluctuation item is 25% of the extremely low humidity value, that is, 10%, and the amplitude increase or decrease of the fluctuation item and the average humidity value is 70% and 50%. At this time, the water vapor content is divided into levels according to the set three levels of dry, normal and wet, 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 to drive the steel box girder to push, obtaining 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 classifying the hydraulic pressure of the self-locking hydraulic crawler into grades based on the increase and decrease results of the cutting pressure item and the standard pressure item to obtain the hydraulic grade item.

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

[0064] In the specific implementation process, assuming that the total weight of the steel box girder is 200 tons, the gravity acceleration is 9.81m / 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] Weight per hydraulic crawler:

[0067] ,

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

[0069] ,

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

[0071] The method for setting the smooth threshold includes: 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 with 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, predicting the displacement change of the target steel box girder during the jacking process to obtain the displacement prediction item; N3: smooth item setting, setting the smooth item, and obtaining the smooth threshold based on the combination of the displacement prediction item and the smooth item.

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

[0073] 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.

[0074] like Figure 6 As 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 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, based on the hydraulic level item corresponding to the first target crawler, pressure superposition is performed to obtain a superposition level item, and the hydraulic pressure of the first target crawler is adjusted based on the superposition level item.

[0076] like Figure 7 As shown, in the specific implementation process, the two tracks AB are parallel to each other. When the pressure level of the self-locking hydraulic crawler on the track A is normal pressure, and the pressure level of the self-locking hydraulic crawler on the track B is high pressure, but the steel box girder deviates toward A, the self-locking hydraulic crawler on the track A is selected and set as the first target crawler. The pressure is superimposed based on the hydraulic level item corresponding to the first target crawler to obtain a superimposed level item, and the superimposed level item is high pressure.

[0077] The second adjustment method also includes: X1: second target determination, based on the defective position item, selecting a 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, based on the hydraulic level item corresponding to the second target crawler, pressure reduction is performed to obtain a reduced level item, and the hydraulic pressure of the second target crawler is adjusted based on the reduced level item.

[0078] like Figure 8 As shown, in the specific implementation process, the two tracks AB are parallel to each other. When the pressure level of the self-locking hydraulic crawler on the A track is high pressure, and the pressure level of the self-locking hydraulic crawler on the B track is normal pressure, but the steel box girder deviates toward A, the self-locking hydraulic crawler on the B track is selected 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, which is low pressure.

[0079] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached 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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