A design and construction method of prefabricated bridge based on BIM

Abstract

The embodiment of the present application relates to the field of prefabricated building technology, and discloses a design and construction method for a prefabricated bridge based on BIM. The design and construction method for a prefabricated bridge based on BIM first uses the design parameters of the bridge to form a BIM model of the bridge, and then uses the BIM model to perform a vibration simulation test of the bridge to obtain the pre-construction data of the bridge. The pre-construction data includes the seismic distance of the piers and beams along the bridge and the seismic distance of the piers and beams across the bridge, wherein the seismic distance of the piers and beams along the bridge is greater than or equal to the target value of the relative displacement of the piers and beams along the bridge, and the seismic distance of the piers and beams across the bridge is greater than or equal to the target value of the relative displacement of the piers and beams across the bridge. In this way, not only the accuracy and efficiency of bridge design and construction are improved, but also a strong guarantee is provided for the safe, stable and efficient construction of bridges.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and in particular to a design and construction method of a prefabricated bridge based on BIM. Background Art

[0002] In modern bridge engineering, prefabricated bridges are widely used due to their advantages such as fast construction speed and strong quality controllability. However, with the increasing complexity of bridge structures and the frequent occurrence of natural disasters such as earthquakes, how to ensure the safety and stability of bridges under extreme conditions has become an urgent problem to be solved. Traditional bridge design and construction methods mainly rely on empirical formulas and manual calculations, which make it difficult to fully consider the response characteristics of bridges under various vibration conditions, resulting in design results that are often conservative or have safety hazards. Summary of the invention

[0003] The main purpose of the present invention is to provide a design and construction method for a prefabricated bridge based on BIM, aiming to solve the technical problem in the prior art that the design results are often conservative or have safety hazards when considering the response characteristics of the bridge under various vibration conditions.

[0004] To achieve the above-mentioned purpose, an embodiment of the present application provides a design and construction method of a prefabricated bridge based on BIM, the method comprising:

[0005] Inputting the pier parameter data and the bridge parameter data into the model building library to build the model and obtain a bridge BIM model, wherein the pier parameter data and the bridge parameter data include corresponding size parameters and weight parameters;

[0006] A vibration simulation test with set vibration conditions is performed through the bridge BIM model, and relevant vibration data is obtained to obtain relative displacement data of the pier and beam along the bridge and relative displacement data of the pier and beam transverse to the bridge;

[0007] Processing the relative displacement data of the pier-beam along the bridge direction and the relative displacement data of the pier-beam transversely to the bridge direction respectively to obtain a relative displacement threshold of the pier-beam along the bridge direction and a relative displacement threshold of the pier-beam transversely to the bridge direction;

[0008] The relative displacement thresholds of the pier-beam along the bridge direction and the relative displacement thresholds of the pier-beam transversely to the bridge direction are respectively corrected to obtain the relative displacement target values ​​of the pier-beam along the bridge direction and the relative displacement target values ​​of the pier-beam transversely to the bridge direction;

[0009] When the target values ​​of relative displacement of the piers and beams along the bridge and the target values ​​of relative displacement of the piers and beams across the bridge meet preset conditions, pre-construction data of the bridge are generated according to the target values ​​of relative displacement of the piers and beams along the bridge and the target values ​​of relative displacement of the piers and beams across the bridge, wherein the pre-construction data include the seismic resistance distance of the piers and beams along the bridge and the seismic resistance distance of the piers and beams across the bridge, wherein the seismic resistance distance of the piers and beams along the bridge is greater than or equal to the target value of relative displacement of the piers and beams along the bridge, and the seismic resistance distance of the piers and beams across the bridge is greater than or equal to the target value of relative displacement of the piers and beams across the bridge.

[0010] In a possible implementation, the step of inputting the pier parameter data and the bridge parameter data into a model building library to build a model to obtain a bridge BIM model includes:

[0011] Formatting the pier parameter data and the bridge parameter data to obtain pre-processed data;

[0012] Using the model building library of the BIM software, a three-dimensional model of the pier and a three-dimensional model of the bridge are created according to the pre-processed data;

[0013] The 3D model of the pier and the 3D model of the bridge are spliced ​​to obtain the BIM model of the bridge.

[0014] In a possible implementation, before performing a vibration simulation test with set vibration conditions through the bridge BIM model and obtaining relevant vibration data to obtain the relative displacement data of the pier and beam along the bridge direction and the relative displacement data of the pier and beam transverse to the bridge direction, it also includes:

[0015] The vibration condition is set according to the historical earthquake data at the geographical location where the bridge is pre-installed, wherein the historical earthquake data includes the highest earthquake level and the highest earthquake frequency, and the vibration condition includes the vibration level and the vibration direction.

[0016] In a possible implementation, the vibration simulation test with set vibration conditions is performed through the bridge BIM model, and relevant vibration data is obtained to obtain relative displacement data of the pier and beam along the bridge direction and relative displacement data of the pier and beam transverse to the bridge direction, including:

[0017] Based on the set vibration level and vibration direction, the vibration simulation module in the BIM software is run to perform vibration simulation tests along the bridge and across the bridge on the bridge BIM model;

[0018] The relative displacement data of piers and beams along the bridge direction and the relative displacement data of piers and beams across the bridge direction are extracted from the simulation results.

[0019] In a possible implementation, respectively processing the relative displacement data of the pier-beam along the bridge direction and the relative displacement data of the pier-beam across the bridge direction to obtain the relative displacement threshold of the pier-beam along the bridge direction and the relative displacement threshold of the pier-beam across the bridge direction includes:

[0020] Using a data visualization tool, a relative displacement curve diagram of the pier-beam in the direction of the bridge and in the direction of the bridge is drawn according to the relative displacement data of the pier-beam in the direction of the bridge and the relative displacement data of the pier-beam in the direction of the bridge, so as to obtain a relative displacement curve diagram of the pier-beam in the direction of the bridge and a relative displacement curve diagram of the pier-beam in the direction of the bridge;

[0021] Data cleaning is performed on the pier-beam relative displacement curve graph along the bridge direction and the pier-beam relative displacement curve graph in the transverse direction of the bridge to remove abnormal values, and a virtual data calibration rectangle is generated according to the pier-beam relative displacement curve graph along the bridge direction and the pier-beam relative displacement curve graph in the transverse direction of the bridge after data cleaning, wherein the virtual data calibration rectangle is the minimum circumscribed rectangle circumscribed to the pier-beam relative displacement curve graph along the bridge direction and the pier-beam relative displacement curve graph in the transverse direction of the bridge after data cleaning, and the virtual data calibration rectangle includes rectangle length and rectangle width parameters;

[0022] Calculating the areas of the upper part and the lower part of the virtual data calibration rectangle to obtain a first area and a second area, respectively, and calculating the area difference between the first area and the second area;

[0023] The area difference between the first area and the second area and the rectangular width parameter are input into the corresponding displacement threshold estimation model to obtain the relative displacement threshold of the pier and beam along the bridge direction and the relative displacement threshold of the pier and beam transverse to the bridge direction.

[0024] In a possible implementation, the inputting the area difference between the first area and the second area and the rectangular width parameter into the corresponding displacement threshold estimation model to obtain the relative displacement threshold of the pier and beam along the bridge direction and the relative displacement threshold of the pier and beam transverse to the bridge direction includes:

[0025] The area difference between the first area and the second area corresponding to the pier-beam relative displacement curve graph along the bridge direction and the rectangle width parameter corresponding to the pier-beam relative displacement curve graph along the bridge direction are input into the first displacement threshold estimation model to obtain the pier-beam relative displacement threshold along the bridge direction;

[0026] The area difference between the first area and the second area corresponding to the relative displacement curve of the pier and beam in the transverse direction of the bridge and the rectangular width parameter corresponding to the relative displacement curve of the pier and beam in the transverse direction of the bridge are input into the second displacement threshold estimation model to obtain the relative displacement threshold of the pier and beam in the longitudinal direction of the bridge.

[0027] In a possible implementation manner, the first displacement threshold estimation model satisfies the following expression: ,in, is the relative displacement threshold of the pier and beam along the bridge direction, is the area difference between the first area and the second area corresponding to the relative displacement curve of the pier and beam along the bridge direction, is the rectangular width parameter corresponding to the relative displacement curve of pier and beam along the bridge direction;

[0028] The second displacement threshold estimation model satisfies the following expression: ,in, is the relative displacement threshold of the pier and beam in the transverse direction of the bridge, is the area difference between the first area and the second area corresponding to the relative displacement curve of the pier and beam in the transverse direction of the bridge, It is the rectangular width parameter corresponding to the relative displacement curve of pier and beam in transverse direction of bridge.

[0029] In a possible implementation, respectively correcting the relative displacement threshold of the pier-beam along the bridge direction and the relative displacement threshold of the pier-beam transversely to the bridge direction to obtain the relative displacement target value of the pier-beam along the bridge direction and the relative displacement target value of the pier-beam transversely to the bridge direction, comprises:

[0030] According to the geological hardness grade at the geographical location where the bridge is pre-installed and the wind load grade of the bridge, the relative displacement threshold of the pier-beam along the bridge and the relative displacement threshold of the pier-beam in the transverse direction of the bridge are corrected to obtain the target value of the relative displacement of the pier-beam along the bridge and the target value of the relative displacement of the pier-beam in the transverse direction of the bridge. The wind load grade of the bridge represents the degree of influence of the bridge on the wind load excitation; wherein, the correction amount is negatively correlated with the geological hardness grade at the geographical location where the bridge is pre-installed, and the correction amount is positively correlated with the wind load grade of the bridge.

[0031] In a possible implementation, the pier-beam relative displacement threshold along the bridge direction and the pier-beam relative displacement threshold across the bridge direction are corrected according to the geological hardness level and the bridge wind load level at the pre-installed geographical location of the bridge to obtain the pier-beam relative displacement target value along the bridge direction and the pier-beam relative displacement target value across the bridge direction, including:

[0032] The geological hardness level at the geographical location where the bridge is pre-installed and the bridge wind load level are input into the correction model to obtain the relative displacement correction amount of the pier and beam along the bridge and the relative displacement correction amount of the pier and beam transverse to the bridge;

[0033] According to the pier-beam relative displacement threshold along the bridge direction and the pier-beam relative displacement correction amount along the bridge direction, a target value of the pier-beam relative displacement along the bridge direction is obtained;

[0034] The target value of the relative displacement of the pier-beam in the transverse direction to the bridge is obtained according to the threshold value of the relative displacement of the pier-beam in the transverse direction to the bridge and the correction amount of the relative displacement of the pier-beam in the transverse direction to the bridge.

[0035] In a possible implementation, the correction model satisfies the following expression:

[0036] ,in, For the correction amount, is the relative displacement threshold of the pier and beam along the bridge or the relative displacement threshold of the pier and beam across the bridge, Y is the geological hardness grade at the geographical location where the bridge is pre-installed, Y0 is the standard value of the geological hardness grade, F is the bridge wind load grade, F0 is the standard value of the bridge wind load grade, The weight of the influence of the geological hardness level at the pre-installation location of the bridge on the correction amount, is the influence weight of the bridge wind load level on the correction amount, and A is the control value of the correction amount.

[0037] Different from the prior art, the design and construction method of the prefabricated bridge based on BIM provided in the embodiment of the present application first inputs the pier parameter data and the bridge parameter data into the model building library to build the model to obtain the bridge BIM model; then, a vibration simulation test with set vibration conditions is carried out through the bridge BIM model, and relevant vibration data is obtained to obtain the relative displacement data of the pier and beam along the bridge direction and the relative displacement data of the pier and beam in the transverse direction of the bridge; then, the relative displacement data of the pier and beam along the bridge direction and the relative displacement data of the pier and beam in the transverse direction of the bridge are respectively processed to obtain the relative displacement threshold of the pier and beam along the bridge direction and the relative displacement threshold of the pier and beam in the transverse direction of the bridge. Then, the relative displacement threshold of the pier-beam along the bridge direction and the relative displacement threshold of the pier-beam transversely to the bridge direction are corrected to obtain the target relative displacement value of the pier-beam along the bridge direction and the target relative displacement value of the pier-beam transversely to the bridge direction; when the target relative displacement value of the pier-beam along the bridge direction and the target relative displacement value of the pier-beam transversely to the bridge direction meet the preset conditions, the pre-construction data of the bridge are generated according to the target relative displacement value of the pier-beam along the bridge direction and the target relative displacement value of the pier-beam transversely to the bridge direction, and the seismic resistance distance of the pier-beam along the bridge direction is greater than or equal to the target relative displacement value of the pier-beam along the bridge direction, and the seismic resistance distance of the pier-beam transversely to the bridge direction is greater than or equal to the target relative displacement value of the pier-beam transversely to the bridge direction. That is, firstly, the bridge design parameters are used to form a bridge BIM model, and then the BIM model is used to perform a vibration simulation test of the bridge to obtain the pre-construction data of the bridge. In this way, not only the accuracy and efficiency of bridge design and construction are improved, but also a strong guarantee is provided for the safe, stable and efficient construction of bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0039] Figure 1 This is a schematic diagram of the application environment of bridge design and construction in some embodiments of the present application;

[0040] Figure 2 A schematic diagram of a flow chart of a design and construction method of a prefabricated bridge based on BIM in some embodiments of the present application;

[0041] Figure 3 This is a schematic diagram of the data processing process of the relative displacement of piers and beams along the bridge in some embodiments of the present application;

[0042] Figure 4 This is a schematic diagram of the module structure of the construction system designed in other embodiments of the present application.

[0043] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] 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.

[0045] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] In modern bridge engineering, prefabricated bridges are widely used due to their advantages such as fast construction speed and strong quality controllability. However, with the increasing complexity of bridge structures and the frequent occurrence of natural disasters such as earthquakes, how to ensure the safety and stability of bridges under extreme conditions has become an urgent problem to be solved. Traditional bridge design and construction methods mainly rely on empirical formulas and manual calculations, which make it difficult to fully consider the response characteristics of bridges under various vibration conditions, resulting in design results that are often conservative or have safety hazards.

[0048] It should be noted that if Figure 1 As shown in the figure, the prefabricated bridge is composed of four assembly modules S1, S2, S3, and S4, so that after the prefabricated bridge is installed, it is easy to produce longitudinal (along the bridge direction) and transverse (across the bridge direction) displacement when it is subjected to external environmental vibration. If the longitudinal seismic distance and transverse seismic distance set during the installation process are less than the vibration displacement value, it is easy to cause collisions between the bridge modules, thereby causing bridge safety and risk issues. Therefore, it is necessary to consider the longitudinal seismic distance and transverse seismic distance in advance during the construction design stage, and set buffer materials in the space corresponding to the longitudinal seismic distance and transverse seismic distance for buffering and seismic resistance.

[0049] like Figure 1-Figure 3 As shown, the following takes the design and construction system to perform the design and construction method of the BIM-based prefabricated bridge as an example. It should be noted that although the logical sequence is shown in the flowchart, in some cases, the steps shown or described can be performed in a different order from here. Figure 2 The method comprises the following steps S100 to S500:

[0050] S100, inputting the pier parameter data and the bridge parameter data into the model building library to build a model to obtain a bridge BIM model, wherein the pier parameter data and the bridge parameter data include corresponding size parameters and weight parameters;

[0051] The embodiment of the present application can first collect detailed parameter data of bridge piers and bridges, including size parameters (such as length, width, height, etc.) and weight parameters. Ensure the accuracy and completeness of the data so as to ensure the accuracy of subsequent model construction. Then select a suitable BIM model construction library, such as Revit, Catia, etc. Then input the collected bridge pier and bridge parameter data into the model construction library, and use the modeling function of the software to generate a bridge BIM model based on the input data. During the modeling process, the parameters can be adjusted in real time to optimize the model.

[0052] To improve the accuracy of modeling, in one embodiment, the step S100: inputting the pier parameter data and the bridge parameter data into the model building library to build a model to obtain a bridge BIM model, includes: formatting the pier parameter data and the bridge parameter data to obtain pre-processed data; using the model building library of the BIM software to create a pier three-dimensional model and a bridge three-dimensional model according to the pre-processed data; and splicing the pier three-dimensional model and the bridge three-dimensional model to obtain a bridge BIM model.

[0053] Specifically, the embodiment of the present application first collects detailed parameter data of piers and bridges from design documents, construction drawings or field measurement data, including but not limited to size, shape, material properties, position coordinates, etc. Then check the data integrity, eliminate invalid or erroneous data items, and ensure the accuracy and consistency of the data. Then convert the collected data into a format recognizable by BIM software, such as CSV, Excel or a data import template for a specific software. This usually involves mapping and conversion of data fields to ensure that the data can be correctly imported into the model building library of the BIM software. After the data conversion, a check is performed to ensure the accuracy and integrity of the data and avoid data loss or errors. Then, the model building library of the BIM software is used to create three-dimensional models of piers and bridges respectively according to the preprocessed data. Finally, the three-dimensional model of the pier and the three-dimensional model of the bridge are positioned, aligned and spliced ​​to ensure their correct position and direction in the actual space. In this way, by formatting the parameter data of the piers and bridges, creating three-dimensional models and splicing models, etc., an accurate and detailed bridge BIM model can be efficiently constructed. This not only provides a reliable basis for subsequent analysis and simulation, but also improves the accuracy and efficiency of modeling.

[0054] S200, performing a vibration simulation test with set vibration conditions through the bridge BIM model, and obtaining relevant vibration data to obtain relative displacement data of the pier and beam along the bridge direction and relative displacement data of the pier and beam transverse to the bridge direction;

[0055] In the embodiment of the present application, firstly, reasonable vibration conditions can be set according to the geographical location, climatic conditions and possible natural disasters of the bridge. These conditions may include seismic wave type, magnitude, frequency, etc. Then, the BIM model is used to perform a vibration simulation test, and the dynamic response of the bridge under the set vibration conditions is simulated through the built-in vibration simulation function of the software. During the simulation test, relevant vibration data is collected. The vibration data may include the relative displacement data of the pier and beam along the bridge, the relative displacement data of the pier and beam across the bridge, etc.

[0056] The relative displacement data of piers and beams along the bridge refers to the relative displacement of the piers and the bridge body (or beam body) in the bridge structure in the length direction of the bridge (i.e. along the bridge). The relative displacement data of piers and beams across the bridge refers to the relative displacement of the piers and the bridge body in the width direction of the bridge (i.e. across the bridge).

[0057] In order to accurately simulate the vibration conditions of the bridge at the pre-installation geographical location, before performing a vibration simulation test with set vibration conditions through the bridge BIM model and obtaining relevant vibration data to obtain the relative displacement data of the piers and beams along the bridge and the relative displacement data of the piers and beams across the bridge, it also includes: setting vibration conditions according to historical earthquake data at the pre-installation geographical location of the bridge, the historical earthquake data including the highest earthquake level and the highest earthquake frequency, and the vibration conditions including the vibration level and the vibration direction.

[0058] Specifically, historical earthquake data at the geographical location of the bridge pre-installation can be obtained from earthquake monitoring agencies, geological survey departments or relevant research institutions. These data should include records of all significant earthquakes that have occurred in the past, especially the highest earthquake level and the highest earthquake frequency (the highest value of aftershock frequency). Then, the collected historical earthquake data are analyzed in detail to determine the laws and characteristics of earthquake activity in the area. According to the highest earthquake level in the historical earthquake data, a vibration level not lower than this level can be set as the basis for simulation testing. Considering the randomness and uncertainty of the earthquake level, a certain safety margin can be added on the basis of the setting. Analyze the propagation direction of seismic waves in historical earthquake data to determine the possible vibration direction. In the simulation test, all possible vibration directions should be covered, including along the bridge, across the bridge, and possible oblique vibrations. In addition to the vibration level and vibration direction, other vibration parameters can also be considered, such as vibration duration, vibration waveform (sine wave, cosine wave), etc.

[0059] In one embodiment, the step S200: performing a vibration simulation test with set vibration conditions through the bridge BIM model, and acquiring relevant vibration data to obtain the relative displacement data of the piers and beams along the bridge and the relative displacement data of the piers and beams in the transverse direction of the bridge, including: based on the set vibration level and vibration direction, running the vibration simulation module in the BIM software, performing a vibration simulation test along the bridge and a vibration simulation test in the transverse direction of the bridge on the bridge BIM model; extracting the relative displacement data of the piers and beams along the bridge and the relative displacement data of the piers and beams in the transverse direction of the bridge from the simulation results.

[0060] Specifically, before conducting a vibration simulation test, the accuracy and integrity of the bridge BIM model should be ensured. The model should be properly preprocessed, such as adding necessary constraints and setting reasonable material properties. Then, according to the set vibration conditions, a vibration simulation test is performed in the BIM software. The dynamic response of the bridge during the vibration process is monitored and recorded, including the relative displacement data of the piers and beams along the bridge and the relative displacement data of the piers and beams across the bridge.

[0061] For example, cyclic vibrations are performed in different vibration directions within a vibration simulation cycle to perform simulation tests, and the simulation test is performed at the highest earthquake level set in the vibration simulation test, and the relative displacement data of the piers and beams along the bridge and the relative displacement data of the piers and beams across the bridge in this case are used as the basis for analysis. In this way, the damage status of the bridge under different earthquake conditions can be comprehensively and accurately evaluated.

[0062] S300, respectively processing the relative displacement data of the pier-beam along the bridge direction and the relative displacement data of the pier-beam transversely to the bridge direction to obtain a relative displacement threshold value of the pier-beam along the bridge direction and a relative displacement threshold value of the pier-beam transversely to the bridge direction;

[0063] In an embodiment of the present application, after obtaining the relative displacement data of the piers and beams along the bridge and the relative displacement data of the piers and beams across the bridge, the collected vibration data can be first processed and analyzed. For example, the data processing and analysis can include steps such as data filtering, denoising, and statistical analysis. Then, based on the processed data, the relative displacement thresholds of the piers and beams along the bridge and the relative displacement thresholds of the piers and beams across the bridge are determined. These thresholds reflect the maximum relative displacement that the bridge can achieve under set vibration conditions. In the process of data statistical analysis, the average value, maximum value, or minimum value of the corresponding data can be taken as the relative displacement thresholds of the piers and beams along the bridge and the relative displacement thresholds of the piers and beams across the bridge.

[0064] In order to improve the accuracy of obtaining the relative displacement thresholds of the pier-beam along the bridge direction and the relative displacement thresholds of the pier-beam transversely to the bridge direction, in one embodiment, the step S300: respectively processing the relative displacement data of the pier-beam along the bridge direction and the relative displacement data of the pier-beam transversely to the bridge direction to obtain the relative displacement thresholds of the pier-beam along the bridge direction and the relative displacement thresholds of the pier-beam transversely to the bridge direction, includes:

[0065] Step S310, using a data visualization tool, drawing a relative displacement curve graph of the pier-beam in the direction along the bridge and in the direction across the bridge according to the relative displacement data of the pier-beam in the direction along the bridge and the relative displacement data of the pier-beam in the direction across the bridge to obtain a relative displacement curve graph of the pier-beam in the direction along the bridge and a relative displacement curve graph of the pier-beam in the direction across the bridge;

[0066] Step S320, performing data cleaning on the pier-beam relative displacement curve graph along the bridge direction and the pier-beam relative displacement curve graph in the transverse direction of the bridge to remove abnormal values, and generating a virtual data calibration rectangle based on the pier-beam relative displacement curve graph along the bridge direction and the pier-beam relative displacement curve graph in the transverse direction of the bridge after data cleaning, wherein the virtual data calibration rectangle is the minimum circumscribed rectangle circumscribed to the pier-beam relative displacement curve graph along the bridge direction and the pier-beam relative displacement curve graph in the transverse direction of the bridge after data cleaning, and the virtual data calibration rectangle includes rectangle length and rectangle width parameters;

[0067] Step S330, respectively calculating the areas of the upper part and the lower part of the virtual data calibration rectangle to obtain a first area and a second area, and calculating the area difference between the first area and the second area;

[0068] Step S340: input the area difference between the first area and the second area and the rectangle width parameter into the corresponding displacement threshold estimation model to obtain the relative displacement threshold of the pier and beam in the longitudinal direction of the bridge and the relative displacement threshold of the pier and beam in the transverse direction of the bridge.

[0069] Specifically, professional data visualization tools are used to convert the relative displacement data of piers and beams along the bridge and the relative displacement data of piers and beams across the bridge into intuitive relative displacement curves. This step helps to quickly identify trends, fluctuations and potential anomalies in the data. The relative displacement curves are carefully cleaned to remove abnormal values ​​caused by instrument errors, environmental interference and other factors, such as Figure 3 In the figure, K2 is the cleaned data. Then, based on the cleaned data, a minimum rectangle (i.e., virtual data calibration rectangle) circumscribing the curve graph is generated, such as Figure 3 The rectangle represented by K1 in the figure provides a geometric basis for the subsequent threshold calculation through its length and width parameters. The virtual data calibration rectangle is divided into two parts (such as Figure 3 The upper and lower parts of the middle curve are calculated, and their areas (the first area and the second area) are calculated respectively. By comparing the area difference between the two parts, the symmetry and central tendency of the data distribution can be indirectly reflected, providing a basis for the reasonable setting of the threshold. Finally, key parameters such as area difference and rectangle width are input into the pre-trained displacement threshold estimation model. Based on machine learning or statistical learning theory, this model can comprehensively consider various characteristics of the data and output more accurate relative displacement thresholds of piers and beams in the longitudinal and transverse directions of the bridge.

[0070] Exemplarily, two independent displacement threshold estimation models are used to determine the relative displacement thresholds of the pier and beam in the longitudinal and transverse directions of the bridge, that is, the area difference between the first area and the second area corresponding to the relative displacement curve of the pier and beam in the longitudinal direction of the bridge and the rectangular width parameter corresponding to the relative displacement curve of the pier and beam in the longitudinal direction of the bridge are input into the first displacement threshold estimation model to obtain the relative displacement threshold of the pier and beam in the longitudinal direction of the bridge; the area difference between the first area and the second area corresponding to the relative displacement curve of the pier and beam in the transverse direction of the bridge and the rectangular width parameter corresponding to the relative displacement curve of the pier and beam in the transverse direction of the bridge are input into the second displacement threshold estimation model to obtain the relative displacement threshold of the pier and beam in the longitudinal direction of the bridge.

[0071] In one embodiment, the first displacement threshold estimation model satisfies the following expression: ,in, is the relative displacement threshold of the pier and beam along the bridge direction, is the area difference between the first area and the second area corresponding to the relative displacement curve of the pier and beam along the bridge direction, is the rectangular width parameter corresponding to the relative displacement curve of pier and beam along the bridge direction;

[0072] The second displacement threshold estimation model satisfies the following expression: ,in, is the relative displacement threshold of the pier and beam in the transverse direction of the bridge, is the area difference between the first area and the second area corresponding to the relative displacement curve of the pier and beam in the transverse direction of the bridge, It is the rectangular width parameter corresponding to the relative displacement curve of pier and beam in transverse direction of bridge.

[0073] It can be understood that in the embodiment of the present application, in the longitudinal direction of the bridge, the relative displacement threshold of the pier and beam in the longitudinal direction of the bridge is obtained by calculating the displacement difference in the front-to-back direction; in the transverse direction of the bridge, the relative displacement threshold of the pier and beam in the transverse direction of the bridge is obtained by calculating the displacement difference in the left-to-right direction.

[0074] S400, respectively calibrating the relative displacement threshold of the pier-beam along the bridge direction and the relative displacement threshold of the pier-beam transversely to the bridge direction to obtain a target relative displacement value of the pier-beam along the bridge direction and a target relative displacement value of the pier-beam transversely to the bridge direction;

[0075] In order to reduce the influence of other factors on the bridge under vibration conditions, in one embodiment, the step S400: respectively correcting the relative displacement threshold of the pier-beam along the bridge direction and the relative displacement threshold of the pier-beam across the bridge direction to obtain the target relative displacement value of the pier-beam along the bridge direction and the target relative displacement value of the pier-beam across the bridge direction, including: correcting the relative displacement threshold of the pier-beam along the bridge direction and the relative displacement threshold of the pier-beam across the bridge direction according to the geological hardness grade at the pre-installation geographical location of the bridge and the wind load grade of the bridge to obtain the target relative displacement value of the pier-beam along the bridge direction and the target relative displacement value of the pier-beam across the bridge direction, the wind load grade of the bridge characterizing the degree of influence of the bridge on the wind load excitation; wherein the correction amount is negatively correlated with the geological hardness grade at the pre-installation geographical location of the bridge, and the correction amount is positively correlated with the wind load grade of the bridge.

[0076] Specifically, the relative displacement threshold of the pier and beam along the bridge and the relative displacement threshold of the pier and beam across the bridge can be corrected according to the geological hardness level at the pre-installation geographical location of the bridge and the wind load level of the bridge to obtain the target value of the relative displacement of the pier and beam along the bridge and the target value of the relative displacement of the pier and beam across the bridge.

[0077] It can be understood that the higher the geological hardness, the better the stability of the bridge foundation, so the relative displacement of the piers and beams may decrease. Therefore, the correction amount is negatively correlated with the geological hardness level, that is, the higher the geological hardness level, the smaller the correction amount (for example, it can be a negative value, indicating that the original threshold needs to be reduced to obtain a more accurate target value). The higher the wind load level, the greater the impact of wind load excitation on the bridge, and the relative displacement of the piers and beams may increase. Therefore, the correction amount is positively correlated with the wind load level of the bridge, that is, the higher the wind load level, the larger the correction amount (for example, it can be a positive value, indicating that the original threshold needs to be increased to obtain a more accurate target value).

[0078] Exemplarily, a correction model can be established in advance, and the corresponding correction amount can be obtained through the correction model. Then, the target value of the relative displacement of the pier and beam in the direction along the bridge can be obtained based on the relative displacement threshold of the pier and beam in the direction along the bridge and the corresponding correction amount. The target value of the relative displacement of the pier and beam in the direction across the bridge can be obtained based on the relative displacement threshold of the pier and beam in the direction across the bridge and the corresponding correction amount.

[0079] In one embodiment, the present application embodiment is prepared through a large amount of data training, and the pre-trained correction model satisfies the following expression:

[0080] ,in, For the correction amount, is the relative displacement threshold of the pier and beam along the bridge direction or the relative displacement threshold of the pier and beam in the transverse direction (when calculating the correction amount along the bridge direction, it is the relative displacement threshold of the pier and beam in the along the bridge direction; when calculating the correction amount in the transverse direction, it is the relative displacement threshold of the pier and beam in the transverse direction), Y is the geological hardness grade at the geographical location where the bridge is pre-installed, Y0 is the standard value of the geological hardness grade, F is the bridge wind load grade, F0 is the standard value of the bridge wind load grade, The weight of the influence of the geological hardness level at the pre-installation location of the bridge on the correction amount, is the weight of the influence of the bridge wind load level on the correction amount, and A is the control value of the correction amount. In the embodiment of the present application, based on the relative displacement threshold of the pier-beam along the bridge or the relative displacement threshold of the pier-beam across the bridge, the correction amount is calculated by comprehensively considering the geological hardness level at the geographical location where the bridge is pre-installed and the bridge wind load level, which greatly improves the accuracy of obtaining the relative displacement of the pier and beam. For the convenience of calculation, and Each value is assigned to 0.5.

[0081] After obtaining the correction model, the geological hardness level and the bridge wind load level at the pre-installation geographical location of the bridge are input into the correction model to obtain the correction amount of the relative displacement of the pier and beam along the bridge direction and the correction amount of the relative displacement of the pier and beam in the transverse direction of the bridge; then, the target value of the relative displacement of the pier and beam along the bridge direction is obtained according to the relative displacement threshold of the pier and beam along the bridge direction and the correction amount of the relative displacement of the pier and beam along the bridge direction; the target value of the relative displacement of the pier and beam in the transverse direction of the bridge is obtained according to the relative displacement threshold of the pier and beam in the transverse direction of the bridge and the correction amount of the relative displacement of the pier and beam in the transverse direction of the bridge. That is, the target value of the relative displacement of the pier and beam along the bridge direction is obtained by adding the corresponding correction amount on the basis of the relative displacement threshold of the pier and beam in the transverse direction of the bridge, and the target value of the relative displacement of the pier and beam in the transverse direction of the bridge is obtained by adding the corresponding correction amount on the basis of the relative displacement threshold of the pier and beam in the transverse direction of the bridge.

[0082] S500. When the target values ​​of relative displacement of the piers and beams along the bridge and the target values ​​of relative displacement of the piers and beams in the transverse direction of the bridge meet preset conditions, generate pre-construction data of the bridge according to the target values ​​of relative displacement of the piers and beams along the bridge and the target values ​​of relative displacement of the piers and beams in the transverse direction of the bridge, wherein the pre-construction data include the seismic resistance distance of the piers and beams along the bridge and the seismic resistance distance of the piers and beams in the transverse direction of the bridge, wherein the seismic resistance distance of the piers and beams along the bridge is greater than or equal to the target value of relative displacement of the piers and beams along the bridge, and the seismic resistance distance of the piers and beams in the transverse direction of the bridge is greater than or equal to the target value of relative displacement of the piers and beams in the transverse direction of the bridge.

[0083] In the embodiment of the present application, when the target relative displacement value of the pier-beam along the bridge direction and the target relative displacement value of the pier-beam transverse to the bridge direction both meet the preset safety conditions, that is, when both values ​​are greater than a certain safety warning alert value, it indicates that the vibration displacement of the bridge in the lateral and longitudinal directions has reached a safety level that requires special attention. In order to cope with this potential vibration risk, the present application sets a reasonable seismic distance for the bridge, and configures buffer materials in the space corresponding to these seismic distances to effectively absorb and mitigate vibration energy. Specifically, the seismic distance of the pier-beam along the bridge direction (such as Figure 1 The L1 shown in the figure should be set to be greater than or equal to the target relative displacement value in this direction to ensure that the relative displacement between the piers and beams will not exceed the preset safety range under extreme conditions such as earthquakes. Figure 1 L2) shown in the figure should also be set to be greater than or equal to the relative displacement target value in this direction to maintain the lateral stability of the bridge. This design can provide additional safety for the bridge and reduce the risk of damage in natural disasters such as earthquakes.

[0084] Based on this, the design and construction method of the prefabricated bridge based on BIM provided in the embodiment of the present application first inputs the pier parameter data and the bridge parameter data into the model construction library to construct the model to obtain the bridge BIM model; then, a vibration simulation test with set vibration conditions is performed through the bridge BIM model, and relevant vibration data is obtained to obtain the relative displacement data of the pier and beam along the bridge direction and the relative displacement data of the pier and beam across the bridge direction; then, the relative displacement data of the pier and beam along the bridge direction and the relative displacement data of the pier and beam across the bridge direction are respectively processed to obtain the relative displacement threshold value of the pier and beam along the bridge direction and the relative displacement threshold value of the pier and beam across the bridge direction. value; then the threshold of relative displacement of piers and beams along the bridge direction and the threshold of relative displacement of piers and beams across the bridge direction are corrected to obtain the target value of relative displacement of piers and beams along the bridge direction and the target value of relative displacement of piers and beams across the bridge direction; when the target value of relative displacement of piers and beams along the bridge direction and the target value of relative displacement of piers and beams across the bridge direction meet the preset conditions, the pre-construction data of the bridge is generated according to the target value of relative displacement of piers and beams along the bridge direction and the target value of relative displacement of piers and beams across the bridge direction, and the seismic distance of piers and beams along the bridge direction is greater than or equal to the target value of relative displacement of piers and beams along the bridge direction, and the seismic distance of piers and beams across the bridge direction is greater than or equal to the target value of relative displacement of piers and beams across the bridge direction. That is, firstly, the bridge design parameters are used to form a BIM model of the bridge, and then the BIM model is used to perform vibration simulation test of the bridge to obtain the pre-construction data of the bridge. In this way, not only the accuracy and efficiency of bridge design and construction are improved, but also a strong guarantee is provided for the safe, stable and efficient construction of bridges.

[0085] An embodiment of the present application also provides a design and construction system, including a memory 101 and a processor 102, wherein the memory 101 is used to store program codes, and the processor 102 is used to call the program codes to execute the design and construction method of the BIM-based prefabricated bridge as described above.

[0086] The processor 102 is used to provide computing and control capabilities to control the design and construction system to perform corresponding tasks, for example, to control the design and construction system to perform the design and construction method of a prefabricated bridge based on BIM in any of the above method embodiments, the method comprising: inputting pier parameter data and bridge parameter data into a model building library to perform model building to obtain a bridge BIM model, wherein the pier parameter data and bridge parameter data include corresponding size parameters and weight parameters; performing a vibration simulation test with set vibration conditions through the bridge BIM model, and obtaining relevant vibration data to obtain relative displacement data of the pier and beam along the bridge direction and relative displacement data of the pier and beam in the transverse direction of the bridge; respectively performing data processing on the relative displacement data of the pier and beam along the bridge direction and the relative displacement data of the pier and beam in the transverse direction of the bridge to obtain a relative displacement threshold of the pier and beam along the bridge direction and a relative displacement threshold of the pier and beam in the transverse direction of the bridge; respectively calibrating the relative displacement threshold of the pier and beam along the bridge direction and the relative displacement threshold of the pier and beam in the transverse direction of the bridge to obtain a target value of the relative displacement of the pier and beam along the bridge direction and a target value of the relative displacement of the pier and beam in the transverse direction of the bridge; when both the target value of the relative displacement of the pier and beam along the bridge direction and the target value of the relative displacement of the pier and beam in the transverse direction of the bridge meet preset conditions, generating pre-construction data of the bridge according to the target value of the relative displacement of the pier and beam along the bridge direction and the target value of the relative displacement of the pier and beam in the transverse direction of the bridge, the pre-construction data comprising a seismic distance of the pier and beam along the bridge direction and a seismic distance of the pier and beam in the transverse direction of the bridge, wherein the seismic distance of the pier and beam along the bridge direction is greater than or equal to the target value of the relative displacement of the pier and beam along the bridge direction, and the seismic distance of the pier and beam in the transverse direction of the bridge is greater than or equal to the target value of the relative displacement of the pier and beam in the transverse direction of the bridge.

[0087] The processor 102 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), a hardware chip, or any combination thereof; it may also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof.

[0088] The memory 101, as a non-transient computer-readable storage medium, can be used to store non-transient software programs, non-transient computer executable programs and modules, such as program instructions / modules corresponding to the BIM-based prefabricated bridge design and construction method in the embodiment of the present application. The processor 102 can implement the BIM-based prefabricated bridge design and construction method in any of the above method embodiments by running the non-transient software programs, instructions and modules stored in the memory 101.

[0089] Specifically, the memory 101 may include a volatile memory (VM), such as a random access memory (RAM); the memory 101 may also include a non-volatile memory (NVM), such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD) or other non-transitory solid-state storage device; the memory 101 may also include a combination of the above types of memories.

[0090] In summary, the design and construction system of the present application adopts the technical solution of any one of the above-mentioned BIM-based prefabricated bridge design and construction method embodiments, and therefore, has at least the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0091] The embodiment of the present application also provides a computer-readable storage medium, such as a memory including a program code, and the program code can be executed by a processor to complete the design and construction method of a prefabricated bridge based on BIM in the above embodiment. For example, the computer-readable storage medium can be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CDROM), a magnetic tape, a floppy disk, an optical data storage device, etc.

[0092] The embodiment of the present application also provides a computer program product, which includes one or more program codes, and the program code is stored in a computer-readable storage medium. The processor of the design and construction system reads the program code from the computer-readable storage medium, and the processor executes the program code to complete the steps of the design and construction method of the prefabricated bridge based on BIM provided in the above embodiment.

[0093] A person skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be accomplished by hardware or by hardware associated with a program code, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0094] It should be noted that the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0095] Through the description of the above embodiments, it can be clearly understood by those skilled in the art that each embodiment can be implemented by means of software plus a general hardware platform, or by hardware. It can be understood by those skilled in the art that all or part of the processes in the above embodiment methods can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0096] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A design and construction method for a prefabricated bridge based on BIM, characterized in that: The method comprises: Inputting the pier parameter data and the bridge parameter data into the model building library to build the model and obtain a bridge BIM model, wherein the pier parameter data and the bridge parameter data include corresponding size parameters and weight parameters; A vibration simulation test with set vibration conditions is performed through the bridge BIM model, and relevant vibration data is obtained to obtain relative displacement data of the pier and beam along the bridge and relative displacement data of the pier and beam transverse to the bridge; Processing the relative displacement data of the pier-beam along the bridge direction and the relative displacement data of the pier-beam transversely to the bridge direction respectively to obtain a relative displacement threshold value of the pier-beam along the bridge direction and a relative displacement threshold value of the pier-beam transversely to the bridge direction; The relative displacement thresholds of the pier-beam along the bridge direction and the relative displacement thresholds of the pier-beam transversely to the bridge direction are respectively corrected to obtain the relative displacement target values ​​of the pier-beam along the bridge direction and the relative displacement target values ​​of the pier-beam transversely to the bridge direction; In the case that the target values ​​of the relative displacement of the piers and beams in the direction along the bridge and the target values ​​of the relative displacement of the piers and beams in the direction across the bridge both meet the preset conditions, generating pre-construction data of the bridge according to the target values ​​of the relative displacement of the piers and beams in the direction along the bridge and the target values ​​of the relative displacement of the piers and beams in the direction across the bridge, wherein the pre-construction data includes the seismic resistance distance of the piers and beams in the direction along the bridge and the seismic resistance distance of the piers and beams in the direction across the bridge, wherein the seismic resistance distance of the piers and beams in the direction along the bridge is greater than or equal to the target value of the relative displacement of the piers and beams in the direction along the bridge, and the seismic resistance distance of the piers and beams in the direction across the bridge is greater than or equal to the target value of the relative displacement of the piers and beams in the direction across the bridge; The step of respectively processing the relative displacement data of the pier-beam along the bridge direction and the relative displacement data of the pier-beam transversely to the bridge direction to obtain the relative displacement threshold of the pier-beam along the bridge direction and the relative displacement threshold of the pier-beam transversely to the bridge direction comprises: Using a data visualization tool, a relative displacement curve diagram of the pier-beam in the direction of the bridge and in the direction of the bridge is drawn according to the relative displacement data of the pier-beam in the direction of the bridge and the relative displacement data of the pier-beam in the direction of the bridge, so as to obtain a relative displacement curve diagram of the pier-beam in the direction of the bridge and a relative displacement curve diagram of the pier-beam in the direction of the bridge; Data cleaning is performed on the pier-beam relative displacement curve graph along the bridge direction and the pier-beam relative displacement curve graph in the transverse direction of the bridge to remove abnormal values, and a virtual data calibration rectangle is generated according to the pier-beam relative displacement curve graph along the bridge direction and the pier-beam relative displacement curve graph in the transverse direction of the bridge after data cleaning, wherein the virtual data calibration rectangle is the minimum circumscribed rectangle circumscribed to the pier-beam relative displacement curve graph along the bridge direction and the pier-beam relative displacement curve graph in the transverse direction of the bridge after data cleaning, and the virtual data calibration rectangle includes rectangle length and rectangle width parameters; Calculating the areas of the upper part and the lower part of the virtual data calibration rectangle to obtain a first area and a second area, respectively, and calculating the area difference between the first area and the second area; Inputting the area difference between the first area and the second area and the rectangular width parameter into the corresponding displacement threshold estimation model to obtain the relative displacement threshold of the pier and beam along the bridge direction and the relative displacement threshold of the pier and beam transverse to the bridge direction; The step of inputting the area difference between the first area and the second area and the rectangular width parameter into the corresponding displacement threshold estimation model to obtain the relative displacement threshold of the pier and beam along the bridge direction and the relative displacement threshold of the pier and beam transverse to the bridge direction includes: The area difference between the first area and the second area corresponding to the relative displacement curve of the pier and beam along the bridge direction and the rectangular width parameter corresponding to the relative displacement curve of the pier and beam along the bridge direction are input into the first displacement threshold estimation model to obtain the relative displacement threshold of the pier and beam along the bridge direction; The area difference between the first area and the second area corresponding to the relative displacement curve of the pier-beam transverse direction and the width parameter of the rectangle corresponding to the relative displacement curve of the pier-beam transverse direction are input into the second displacement threshold estimation model to obtain the relative displacement threshold of the pier-beam along the bridge direction; The first displacement threshold estimation model satisfies the following expression: ,in, is the relative displacement threshold of the pier and beam along the bridge direction, is the area difference between the first area and the second area corresponding to the relative displacement curve of the pier and beam along the bridge direction, is the rectangular width parameter corresponding to the relative displacement curve of pier and beam along the bridge direction; The second displacement threshold estimation model satisfies the following expression: ,in, is the relative displacement threshold of the pier and beam in the transverse direction of the bridge, is the area difference between the first area and the second area corresponding to the relative displacement curve of the pier and beam in the transverse direction of the bridge, It is the rectangular width parameter corresponding to the relative displacement curve of pier and beam in transverse direction of bridge.

2. The design and construction method of a prefabricated bridge based on BIM as claimed in claim 1, characterized in that: The step of inputting the pier parameter data and the bridge parameter data into the model building library to build the model to obtain the bridge BIM model includes: Formatting the pier parameter data and the bridge parameter data to obtain pre-processed data; Using the model building library of the BIM software, a three-dimensional model of the pier and a three-dimensional model of the bridge are created according to the pre-processed data; The 3D model of the pier and the 3D model of the bridge are spliced ​​to obtain the BIM model of the bridge.

3. The design and construction method of a prefabricated bridge based on BIM as claimed in claim 1, characterized in that: Before performing a vibration simulation test with set vibration conditions through the bridge BIM model and obtaining relevant vibration data to obtain the relative displacement data of the pier and beam along the bridge direction and the relative displacement data of the pier and beam transverse to the bridge direction, the method further includes: The vibration condition is set according to the historical earthquake data at the geographical location where the bridge is pre-installed, wherein the historical earthquake data includes the highest earthquake level and the highest earthquake frequency, and the vibration condition includes the vibration level and the vibration direction.

4. The design and construction method of a prefabricated bridge based on BIM as claimed in claim 3, characterized in that: The vibration simulation test with set vibration conditions is performed through the bridge BIM model, and relevant vibration data is obtained to obtain the relative displacement data of the pier and beam along the bridge direction and the relative displacement data of the pier and beam transverse to the bridge direction, including: Based on the set vibration level and vibration direction, the vibration simulation module in the BIM software is run to perform vibration simulation tests along the bridge and across the bridge on the bridge BIM model; The relative displacement data of piers and beams along the bridge direction and the relative displacement data of piers and beams across the bridge direction are extracted from the simulation results.

5. The design and construction method of a prefabricated bridge based on BIM as claimed in claim 1, characterized in that: The step of respectively correcting the relative displacement threshold of the pier-beam along the bridge direction and the relative displacement threshold of the pier-beam transversely to the bridge direction to obtain the relative displacement target value of the pier-beam along the bridge direction and the relative displacement target value of the pier-beam transversely to the bridge direction comprises: According to the geological hardness grade at the geographical location where the bridge is pre-installed and the wind load grade of the bridge, the relative displacement threshold of the pier-beam along the bridge and the relative displacement threshold of the pier-beam in the transverse direction of the bridge are corrected to obtain the target value of the relative displacement of the pier-beam along the bridge and the target value of the relative displacement of the pier-beam in the transverse direction of the bridge. The wind load grade of the bridge represents the degree of influence of the bridge on the wind load excitation; wherein, the correction amount is negatively correlated with the geological hardness grade at the geographical location where the bridge is pre-installed, and the correction amount is positively correlated with the wind load grade of the bridge.

6. The design and construction method of a prefabricated bridge based on BIM as claimed in claim 5, characterized in that: The method of correcting the relative displacement threshold of the pier-beam along the bridge direction and the relative displacement threshold of the pier-beam transversely to the bridge direction according to the geological hardness level at the pre-installation geographical location of the bridge and the wind load level of the bridge to obtain the relative displacement target value of the pier-beam along the bridge direction and the relative displacement target value of the pier-beam transversely to the bridge direction includes: The geological hardness level at the geographical location where the bridge is pre-installed and the bridge wind load level are input into the correction model to obtain the relative displacement correction amount of the pier and beam along the bridge and the relative displacement correction amount of the pier and beam transverse to the bridge; According to the relative displacement threshold of the pier-beam along the bridge direction and the relative displacement correction amount of the pier-beam along the bridge direction, a target relative displacement value of the pier-beam along the bridge direction is obtained; The target value of the relative displacement of the pier-beam in the transverse direction to the bridge is obtained according to the threshold value of the relative displacement of the pier-beam in the transverse direction to the bridge and the correction amount of the relative displacement of the pier-beam in the transverse direction to the bridge.

7. The design and construction method of a prefabricated bridge based on BIM as claimed in claim 6, characterized in that: The calibration model satisfies the following expression: ,in, For the correction amount, is the relative displacement threshold of the pier and beam along the bridge or the relative displacement threshold of the pier and beam across the bridge, Y is the geological hardness grade at the geographical location where the bridge is pre-installed, Y0 is the standard value of the geological hardness grade, F is the bridge wind load grade, F0 is the standard value of the bridge wind load grade, The weight of the influence of the geological hardness level at the geographical location of the bridge pre-installation on the correction amount, is the influence weight of the bridge wind load level on the correction amount, and A is the control value of the correction amount.

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