Bridge construction load dynamic tracking method

Abstract

The application discloses a bridge construction load dynamic tracking method in the technical field of construction control, and aims to solve the problems of low accuracy and timeliness and the inability to realize dynamic tracking in the prior art. It comprises the following steps: obtaining current time load information of construction live load; mapping the current time load information of the construction live load on a pre-established bridge structure coordinate table to obtain a construction live load real-time arrangement table; combining the construction live load real-time arrangement table with a pre-established construction dead load arrangement table to obtain a construction load real-time arrangement table; and modeling and generating a real-time simulation model of the construction load according to the construction load real-time arrangement table. The application can achieve relatively accurate real-time positioning of the distribution position of the construction live load, is not affected by factors such as manual operation and night, has high reliability, does not need manual conversion, saves time and effort, has high efficiency, has small deviation between the results of theoretical state calculation and actual state, and guarantees reliable and effective analysis and judgment.

Description

Technical Field

[0001] This invention relates to the field of construction control technology, specifically to a method for dynamic tracking of bridge construction loads. Background Technology

[0002] During bridge construction, there are numerous temporary construction loads distributed on the bridge structure. These loads are classified into temporary construction live loads (hereinafter referred to as: construction live loads) and temporary construction relatively constant loads (hereinafter referred to as: construction dead loads) based on whether they are frequently moved.

[0003] These temporary construction loads will have a certain impact on the safety and quality of the bridge structure. On the one hand (in terms of safety), during construction, the magnitude and location of these loads will have different effects on the overall alignment and internal forces of the bridge structure. Even when some temporary loads are combined and distributed in the most unfavorable locations (usually at the ends of cantilever construction or weak points in the structure), they can have a safety impact on the bridge structure. For example, in symmetrical double cantilever construction, the magnitude of the temporary construction load at the cantilever end and the difference in magnitude between this load and the load at the symmetrical location will have an adverse effect on the bridge structure. Furthermore, when the asymmetry of some construction loads reaches a certain level, it can even lead to safety accidents (as shown in the appendix to the instruction manual). Figure 1 (As shown). Therefore, it is necessary to control the construction steps, the size of temporary construction loads, and to distribute temporary loads as symmetrically as possible. On the other hand (regarding construction quality), in order to ensure that the construction error of the bridge structure is within the allowable range of the specifications, it is necessary to analyze and evaluate the key construction states during the bridge construction process (the deviation between theoretical alignment and internal forces and actual alignment and internal forces, where theoretical alignment and internal forces are obtained through simulation calculations, and actual alignment and internal forces are obtained through instrument measurements), and correct deviations in a timely manner. The size and distribution of temporary construction loads are the key and foundation for theoretical state calculations. This requires that the alignment and internal force parameters of theoretical and actual states be obtained under the same working conditions. That is, when conducting actual measurements, it is necessary to statistically analyze the size and distribution of temporary construction loads, and calculate the corresponding theoretical parameters by comprehensively considering this factor. The accuracy of the statistics determines the degree of fit between the theoretical state and the actual site conditions.

[0004] During bridge construction, the self-weight of the construction dead load is generally not very large. It is usually used to store tools or provide office space for construction personnel. Because of its small weight and relatively fixed location, current technology involves systematically planning the specific distribution location (usually near the base of the cantilever or other locations that have little impact on bridge construction), and the location does not change with construction. However, the construction live load has a significant impact on the structural safety and construction quality analysis and evaluation of the bridge. In actual measurement conditions, the self-weight loads of the girder erecting crane or construction basket, vehicle loads, etc., are constant (measurement conditions are conducted at night, which requires the suspension of hoisting and driving operations, etc.), and only the location of their application changes.

[0005] Current technology involves manually observing the location of construction live loads, estimating their position, and feeding this information back to computational personnel. The computational personnel then input the self-weight load distribution into a finite element model for theoretical state calculations. While this method is simple to operate, its accuracy and timeliness are too low, failing to achieve dynamic tracking of the load state. This is mainly reflected in the following aspects:

[0006] (1) Because the actual measurement work requires to be carried out at night when the temperature is constant, the construction live load distribution statistics should also be carried out at this time. Factors such as manual labor and night will cause the accuracy of the moving live load distribution statistics to be poor (the plane position deviation often exceeds 2m), and increase the statistical workload significantly.

[0007] (2) After obtaining the manually compiled load distribution map, the engineer needs to convert the position of each load to the bridge coordinate system corresponding to the simulation calculation model so as to accurately map the position of each load in the simulation calculation model. This work is time-consuming, error-prone, and inefficient.

[0008] (3) Manual statistical methods cannot dynamically track temporary live loads during construction and cannot guarantee that the load will not move during the entire construction measurement period (although movement is required to be prohibited, there is a lack of effective monitoring methods). After the location of the construction live load changes, the results of the theoretical state calculation will deviate from the actual state, and the entire analysis and evaluation will be distorted, which is inappropriate. Summary of the Invention

[0009] The purpose of this invention is to overcome the shortcomings of the prior art and provide a dynamic tracking method for bridge construction loads, solving the problems that the accuracy and timeliness of existing bridge construction loads are too low and dynamic tracking cannot be achieved.

[0010] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution:

[0011] This invention provides a method for dynamic tracking of bridge construction loads, comprising:

[0012] Obtain the current load information of the construction live load;

[0013] The current load information of the construction live load is mapped onto a pre-established bridge structure coordinate table to obtain a real-time arrangement table of the construction live load.

[0014] The real-time construction live load arrangement table is combined with the pre-established construction dead load arrangement table to obtain the real-time construction load arrangement table.

[0015] A real-time simulation model of the construction load is generated based on the real-time layout table of the construction load.

[0016] Furthermore, the method for establishing the construction dead load layout table includes:

[0017] Discretize the bridge structure nodes and establish a bridge structure coordinate table;

[0018] The load information of the construction dead load is mapped onto the bridge structure coordinate table to obtain the construction dead load layout table.

[0019] Furthermore, the load information includes: load type, time information, direction of motion, coordinates of the point of force application, and load magnitude.

[0020] Furthermore, the method for obtaining the current load information of the construction live load includes:

[0021] Receive real-time data from the position detection sensor installed on the construction live load, and obtain the position coordinates, number information and time information of the position detection sensor;

[0022] Based on the numbering information of the position detection sensor and the correlation between the predetermined load type and the numbering information, the load type of the corresponding construction live load is determined.

[0023] The current time information of the position detection sensor is regarded as the time information of the corresponding construction live load;

[0024] Based on the load type of the construction live load and the current position coordinates and number information of the position detection sensor, and combined with the predetermined correlation between the load type, the position coordinates and number information of the position detection sensor and the direction of motion, the direction of motion of the corresponding construction live load is determined.

[0025] Based on the load type, direction of motion, and current position coordinates of the position detection sensor of the construction live load, and combined with the predetermined correlation between the load type, direction of motion, position coordinates of the position detection sensor, and force application point coordinates of the construction live load, the coordinates of each force application point of the corresponding construction live load are determined.

[0026] Based on the load type and force application point coordinates of the construction live load, and combined with the predetermined relationship between the load type, force application point coordinates and load magnitude, the load magnitude of each force application point coordinate of the construction live load is determined.

[0027] Furthermore, the method for determining the association between the load type and the numbering information includes:

[0028] Number the sensors at each location;

[0029] Each number corresponds to a load type;

[0030] Install the position sensor on the construction live load, and ensure that the load type corresponding to the position sensor's serial number is consistent with the actual load type of the construction live load.

[0031] Furthermore, the types of construction live loads include two main types: lifting equipment and temporary construction vehicles;

[0032] The method for determining the correlation between the load type, the position coordinates and number information of the position detection sensor and the direction of motion includes:

[0033] If the load type of the construction live load is a temporary construction vehicle, a position detection sensor is installed at both the front and rear ends of the temporary construction vehicle. The direction of movement of the temporary construction vehicle is calculated based on the numbering information and position coordinates of the two position detection sensors.

[0034] If the load type of the construction live load is a lifting device, then only one position detection sensor is installed on the lifting device to determine the direction of movement of the lifting device according to the preset settings.

[0035] Furthermore, the method for determining the correlation between the load type, direction of motion, position coordinates of the position detection sensor, and the coordinates of the force application point of the construction live load includes:

[0036] Based on the load type of the construction live load and in combination with the predetermined relationship between the load type and the geometric structural features, determine the corresponding geometric structural features of the construction live load.

[0037] Based on the current position coordinates of the position detection sensor and combined with the geometric characteristics and direction of motion of the construction live load, the coordinates of the points of application of each force of the construction live load are calculated.

[0038] Furthermore, methods for determining the relationship between load type, force application point coordinates, and load magnitude include:

[0039] If the load type of the construction live load belongs to the temporary construction vehicle, then the rated full load of the temporary construction vehicle is taken as the total load. Then, according to the load distribution of the temporary construction vehicle, the total load is distributed proportionally to the coordinates of each force application point to obtain the load magnitude of each force application point coordinate.

[0040] If the construction live load belongs to the lifting equipment, the real-time data information emitted by the lifting weight detection sensor installed on the lifting equipment is received to obtain the lifting weight of the lifting equipment. The sum of the self-weight of the lifting equipment and the lifting weight is taken as the total load. Then, according to the load distribution of the lifting equipment, the total load is distributed proportionally to the coordinates of each force application point to obtain the load magnitude of each force application point coordinate.

[0041] Furthermore, the lifting equipment includes a girder crane or a construction formwork.

[0042] Furthermore, after generating a real-time simulation model of the construction load based on the real-time construction load layout table, the process also includes:

[0043] Monitoring items are set up for construction live loads, and a monitoring database is built based on the monitoring data of the monitoring items. The monitoring database is then linked to the real-time simulation model.

[0044] By comparing the monitoring data in the monitoring database with preset thresholds, the warning level of the monitoring data is determined, and graded warnings are issued.

[0045] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0046] 1. By acquiring the current load information of the construction live load, this invention can accurately locate the distribution position of the construction live load in real time, without being affected by factors such as human intervention or nighttime conditions, and has high reliability.

[0047] 2. This invention can obtain the spatial coordinates of the load position of the construction live load on the bridge structure in real time by using the relative positional relationship between the structural dimensions of the construction live load itself. This coordinate serves as a "link" for precise mapping with discrete nodes in the simulation model. The construction live load at the construction site is dynamically mapped to the simulation calculation model in the computer according to the spatial coordinates, thereby realizing dynamic simulation. The whole process is automated, requiring no manual conversion, saving time and effort, and is highly efficient.

[0048] 3. This invention achieves dynamic real-time tracking of construction live loads by collecting load information of construction live loads in real time, and the transmission and mapping between data are also automated, so as to minimize the deviation between the theoretical state calculation results and the actual state, and ensure the reliability and effectiveness of analysis and evaluation.

[0049] 4. This invention tracks the location of construction live loads and monitors the lifting weight of hoisting equipment in real time. The results, combined with a monitoring database, enable dynamic monitoring and graded early warning of bridge structures and construction live loads. Attached Figure Description

[0050] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0051] Figure 1 This is a schematic diagram showing the location of construction loads on a bridge structure when the load distribution is asymmetrical.

[0052] Figure 2 This is a flowchart of a bridge construction load dynamic tracking method provided in an embodiment of the present invention;

[0053] Figure 3 yes Figure 2 A schematic diagram of the temporary construction vehicle used in the bridge construction load dynamic tracking method shown in the figure;

[0054] Figure 4 yes Figure 2 The diagram shows the structure of the girder erecting crane in the bridge construction load dynamic tracking method. Detailed Implementation

[0055] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0056] Example 1:

[0057] like Figure 2 As shown, this embodiment of the invention provides a method for dynamic tracking of bridge construction loads, including: 1. Obtaining the current load information of the construction live load;

[0058] 2. Map the current load information of the construction live load onto the pre-established bridge structure coordinate table to obtain the real-time layout table of the construction live load;

[0059] 3. Combine the real-time construction live load arrangement table with the pre-established construction dead load arrangement table to obtain the real-time construction load arrangement table;

[0060] 4. Generate a real-time simulation model of the construction load based on the real-time construction load layout table.

[0061] The method for establishing the construction dead load layout table includes:

[0062] Discretize the bridge structure nodes and establish a bridge structure coordinate table;

[0063] The load information of the construction dead load is mapped onto the bridge structure coordinate table to obtain the construction dead load layout table.

[0064] It should be noted that since the construction dead load does not change position during construction, the load information of the construction dead load can be obtained by manual statistics at the beginning of construction; and for the above reasons, the obtained construction dead load layout table can be reused throughout the construction process.

[0065] Understandingly, discretizing the bridge structure at each node means discretizing each component of the bridge structure's simulation model into nodes at feature points. These nodes are then connected to simulate the members and deck of the bridge structure, simulated using line elements and shell elements respectively, thereby establishing a bridge structure coordinate table (including only node numbers and spatial coordinates). Mapping the construction dead load information onto the bridge structure coordinate table means associating the construction dead load information from the construction site with the corresponding nodes in the bridge structure coordinate table. The relationship between the two is transformed through a constructed spatial coordinate system, where each node has a three-dimensional coordinate (X, Y, Z) within the spatial coordinate system.

[0066] In this embodiment, the load information includes: load type, time information, direction of motion, coordinates of the point of force application, and load magnitude.

[0067] It should be noted that the load type refers to the specific object of the construction load, the time information refers to the time when the load information is obtained, the direction of motion refers to the orientation of the construction load, the coordinates of the force application point refers to the position coordinates of each point where the construction load exerts force on the bridge structure, and the load magnitude refers to the specific load magnitude at each force application point.

[0068] Understandably, since the location of construction dead loads is relatively fixed and does not change over time, the load information they possess only includes: load type, coordinates of the point of force application, and load magnitude. Typical types of construction dead loads include: containers (for storage or office use), cable stays, and cable trays, etc.

[0069] Construction dead loads include two main types: lifting equipment and temporary construction vehicles. Lifting equipment mainly includes girder erecting cranes and construction formwork, while temporary construction vehicles mainly include girder transport vehicles, truck cranes, aerial work platforms, and other construction vehicles.

[0070] The method for obtaining the current load information of the construction live load includes: S1, receiving real-time data information from a position detection sensor installed on the construction live load, and obtaining the position coordinates, number information, and time information of the position detection sensor.

[0071] Specifically, the position detection sensor can be a GNSS device or a device with dynamic differential function. It can be transmitted to a designated database through a wireless acquisition box (a data acquisition and transmission device that uses a SIM card to transmit signals). The display format can be an EXCEL file containing a parameter matrix including device number (number information), three-dimensional spatial coordinates (position coordinates), time (time information), etc.

[0072] S2. Based on the numbering information of the position detection sensor and the correlation between the predetermined load type and the numbering information, determine the load type of the corresponding construction live load.

[0073] By using a table lookup method, the load type corresponding to the number information can be determined.

[0074] Specifically, the methods for determining the association between load type and number information include:

[0075] Number the sensors at each location;

[0076] Each number corresponds to a load type;

[0077] Install the position sensor on the construction live load, and ensure that the load type corresponding to the position sensor's serial number is consistent with the actual load type of the construction live load.

[0078] S3. The current time information of the position detection sensor is regarded as the time information of the corresponding construction live load.

[0079] S4. Based on the load type of the construction live load and the current position coordinates and number information of the position detection sensor, and combined with the predetermined correlation between the load type, the position coordinates and number information of the position detection sensor and the direction of motion, determine the direction of motion of the corresponding construction live load.

[0080] Specifically, the method for determining the correlation between the load type, the position coordinates and number information of the position detection sensor, and the direction of motion includes:

[0081] If the load type of the construction live load is a temporary construction vehicle, a position detection sensor is installed at both the front and rear ends of the temporary construction vehicle. The direction of movement of the temporary construction vehicle is calculated based on the numbering information and position coordinates of the two position detection sensors.

[0082] For example Figure 3 As shown, the direction of travel of the temporary construction vehicle is not fixed. Therefore, the front and rear ends of the temporary construction vehicle can be determined by the difference in the number information of the two position detection sensors. Then, the direction of movement of the temporary construction vehicle can be calculated based on the position coordinates of the two position detection sensors.

[0083] If the load type of the construction live load is a lifting device, then only one position detection sensor is installed on the lifting device to determine the direction of movement of the lifting device according to the preset settings.

[0084] Since the lifting equipment travels in one direction and its direction of travel does not change throughout the construction process, the direction of travel of the lifting equipment can be preset. Therefore, when it is determined that the load type of the construction live load belongs to the lifting equipment, its direction of travel can be directly determined.

[0085] S5. Based on the load type, direction of motion, and current position coordinates of the position detection sensor of the construction live load, and combined with the predetermined correlation between the load type, direction of motion, position coordinates of the position detection sensor, and force application point coordinates of the construction live load, determine the coordinates of each force application point of the corresponding construction live load.

[0086] Specifically, the methods for determining the correlation between load type, direction of motion, position coordinates of the position detection sensor, and the coordinates of the force application point of the construction live load include:

[0087] Based on the load type of the construction live load and the pre-determined correlation between the load type and the geometric structural features, the corresponding geometric structural features of the construction live load are determined.

[0088] It should be noted that each load type has corresponding geometric structural characteristics, and the relationship between load type and geometric structural characteristics can be determined by pre-measurement and calibration.

[0089] Geometric structural features include the number of force application points and the relative positional relationships between these points.

[0090] For example Figure 3 As shown, the geometric features of a certain temporary construction vehicle are as follows: it has six force application points (two each for the front wheel 1, the middle wheel 2, and the rear wheel 3), the distance between the front wheel 1 and the middle wheel 2 is 360cm, the distance between the rear wheel 3 and the middle wheel 2 is 135cm, and the distance between the two sides is 180cm.

[0091] For example Figure 4 As shown, the geometric structural features of the girder erecting crane are: it has six force application points (front support points Q1, Q2, Q3, and rear anchor points H1, H2, H3), as well as the relative positional relationships between each front support point and each rear anchor point.

[0092] Based on the current position coordinates of the position detection sensor and combined with the geometric characteristics and direction of motion of the construction live load, the coordinates of the points of application of each force of the construction live load are calculated.

[0093] Understandably, by installing position detection sensors on a specific feature point of the construction live load in the early stages, the coordinates of that feature point can be determined. Combining the relative positional relationship between this feature point and the geometric structural features, as well as the direction of movement of the construction live load, the coordinates of each force application point of the construction live load can be derived through geometric calculation. These force application point coordinates serve as a "link" for precise mapping with discrete nodes within the simulation model, dynamically mapping the construction live load at the construction site to spatial coordinates within the computer simulation model.

[0094] S6. Based on the load type and force application point coordinates of the construction live load, and combined with the predetermined relationship between the load type, force application point coordinates and load magnitude, determine the load magnitude of each force application point coordinate of the construction live load.

[0095] Specifically, the methods for determining the relationship between load type, force application point coordinates, and load magnitude include:

[0096] If the load type of the construction live load belongs to the temporary construction vehicle, then the rated full load of the temporary construction vehicle is taken as the total load. Then, according to the load distribution of the temporary construction vehicle, the total load is distributed proportionally to the coordinates of each force application point to obtain the load magnitude of each force application point coordinate.

[0097] It should be noted that the manufacturer will provide the load distribution of the vehicle under rated full load and the load on each wheel when it leaves the factory. Therefore, the load size at each force application point can be directly determined by pre-setting.

[0098] If the construction live load belongs to the lifting equipment, the real-time data information emitted by the lifting weight detection sensor installed on the lifting equipment is received to obtain the lifting weight of the lifting equipment. The sum of the self-weight of the lifting equipment and the lifting weight is taken as the total load. Then, according to the load distribution of the lifting equipment, the total load is distributed proportionally to the coordinates of each force application point to obtain the load magnitude of each force application point coordinate.

[0099] Preferably, the load detection sensor can be a plate ring type sensor or an anchor cable gauge, and its arrangement position is as follows: Figure 4 G1, G2, and G3 are shown.

[0100] It should be noted that there is only one girder erecting crane or construction basket at each cantilever construction end, and the number and self-weight are fixed. The load only changes during its operation (when lifting heavy loads). When leaving the factory, the manufacturer will provide a table showing the load magnitude at each force application point when the lifting equipment is unloaded, as well as the change in load magnitude at each force application point when lifting heavy loads. Therefore, the load magnitude at each force application point coordinate can be obtained by referring to the table.

[0101] Example 2:

[0102] This embodiment provides a method for dynamic tracking of bridge construction loads. The difference between this method and Embodiment 1 is that, after generating a real-time simulation model of the construction loads based on a real-time construction load arrangement table, it further includes:

[0103] Monitoring items are set up for construction live loads, and a monitoring database is built based on the monitoring data of the monitoring items. The monitoring database is then linked to the real-time simulation model.

[0104] By comparing the monitoring data in the monitoring database with preset thresholds, the warning level of the monitoring data is determined, and graded warnings are issued.

[0105] Specifically, for construction live loads belonging to temporary construction vehicles, their movement range during operation is defined, which is reflected in the distance between the vehicle load and the front end of the bridge structure cantilever. This distance is used for early warning via coordinates and is essentially the difference in leverage effect (referred to as overturning moment difference) between the asymmetrical loads on both sides and the root of the main beam and the main tower. By setting a clear safety factor, this overturning moment difference can be calculated in real time and compared with the safety factor to achieve graded early warning. This enables automated early warning thresholds for combined working conditions. When a certain threshold is exceeded, a warning is issued, requiring the driver to stop operating.

[0106] For construction live loads belonging to the type of loads on lifting equipment, the weight range of the load during lifting is defined. This load is detected by a load detection sensor to provide an early warning. When the load exceeds the maximum value of the weight range, the lifting equipment is at risk of tipping over. By setting clear preset thresholds and comparing the load with the preset thresholds, a graded early warning system is implemented.

[0107] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for dynamic tracking of bridge construction loads, characterized in that, include: Obtain the current load information of the construction live load; The current load information of the construction live load is mapped onto a pre-established bridge structure coordinate table to obtain a real-time arrangement table of the construction live load. The real-time construction live load arrangement table is combined with the pre-established construction dead load arrangement table to obtain the real-time construction load arrangement table. A real-time simulation model of the construction load is generated based on the real-time construction load layout table. The load information includes: load type, time information, direction of motion, coordinates of the point of force application, and load magnitude; The method for obtaining the current load information of the construction live load includes: Receive real-time data from the position detection sensor installed on the construction live load, and obtain the position coordinates, number information and time information of the position detection sensor; Based on the numbering information of the position detection sensor and the pre-determined correlation between the load type and the numbering information, the load type of the corresponding construction live load is determined. The current time information of the position detection sensor is regarded as the time information of the corresponding construction live load. Based on the load type of the construction live load and the current position coordinates and number information of the position detection sensor, and combined with the predetermined correlation between the load type, the position coordinates and number information of the position detection sensor and the direction of motion, the direction of motion of the corresponding construction live load is determined. Based on the load type, direction of motion, and current position coordinates of the position detection sensor of the construction live load, and combined with the predetermined correlation between the load type, direction of motion, position coordinates of the position detection sensor, and force application point coordinates of the construction live load, the coordinates of each force application point of the corresponding construction live load are determined. Based on the load type and force application point coordinates of the construction live load, and combined with the predetermined relationship between the load type, force application point coordinates and load magnitude, determine the load magnitude of each force application point coordinate of the construction live load. The method for determining the correlation between the load type, direction of motion, position coordinates of the position detection sensor, and the coordinates of the force application point of the construction live load includes: Based on the load type of the construction live load and the pre-determined correlation between the load type and the geometric structural features, the corresponding geometric structural features of the construction live load are determined. Based on the current position coordinates of the position detection sensor and combined with the geometric structural characteristics and direction of motion of the construction live load, the coordinates of the points of application of each force of the construction live load are calculated. Methods for determining the relationship between load type, force application point coordinates, and load magnitude include: If the load type of the construction live load belongs to the temporary construction vehicle, then the rated full load of the temporary construction vehicle is taken as the total load. Then, according to the load distribution of the temporary construction vehicle, the total load is distributed proportionally to the coordinates of each force application point to obtain the load magnitude of each force application point coordinate. If the construction live load belongs to the lifting equipment, the real-time data information emitted by the lifting weight detection sensor installed on the lifting equipment is received to obtain the lifting weight of the lifting equipment. The sum of the self-weight of the lifting equipment and the lifting weight is taken as the total load. Then, according to the load distribution of the lifting equipment, the total load is distributed proportionally to the coordinates of each force application point to obtain the load magnitude of each force application point coordinate.

2. The bridge construction load dynamic tracking method according to claim 1, characterized in that, The method for establishing the construction dead load layout table includes: Discretize the bridge structure nodes and establish a bridge structure coordinate table; The load information of the construction dead load is mapped onto the bridge structure coordinate table to obtain the construction dead load layout table.

3. The method for dynamic tracking of bridge construction loads according to claim 1, characterized in that, The method for determining the association between the load type and the numbering information includes: Number the sensors at each location; Each number corresponds to a load type; Install the position sensor on the construction live load, and ensure that the load type corresponding to the position sensor's serial number is consistent with the actual load type of the construction live load.

4. The bridge construction load dynamic tracking method according to claim 1, characterized in that, The types of construction live loads include two main types: lifting equipment and temporary construction vehicles. The method for determining the correlation between the load type, the position coordinates and number information of the position detection sensor and the direction of motion includes: If the load type of the construction live load is a temporary construction vehicle, a position detection sensor is installed at both the front and rear ends of the temporary construction vehicle. The direction of movement of the temporary construction vehicle is calculated based on the numbering information and position coordinates of the two position detection sensors. If the load type of the construction live load is a lifting device, then only one position detection sensor is installed on the lifting device to determine the direction of movement of the lifting device according to the preset settings.

5. The bridge construction load dynamic tracking method according to claim 4, characterized in that, The lifting equipment includes a girder crane or a construction basket.

6. The method for dynamic tracking of bridge construction loads according to any one of claims 1-5, characterized in that, After generating a real-time simulation model of the construction load based on the real-time construction load layout table, the following steps are also included: Monitoring items are set up for construction live loads, and a monitoring database is built based on the monitoring data of the monitoring items. The monitoring database is then linked to the real-time simulation model. By comparing the monitoring data in the monitoring database with preset thresholds, the warning level of the monitoring data is determined, and graded warnings are issued.

Images