Large floating crane girder simulation interaction construction method and system

Abstract

The application discloses a large floating crane beam simulation interaction construction method, which comprises the following steps: establishing a three-dimensional model in a simulation interaction system, inputting an initial beam erection scheme, performing simulation and obtaining a final beam erection scheme, guiding actual beam erection construction through the final beam erection scheme and synchronously updating in the simulation interaction system to guide the beam erection construction in real time. Through human-computer interaction, driving engine and digital twin and other technologies, the application simulates a real construction scene, and performs early practice and war game on the beam erection, thereby providing a powerful tool for formulating a reasonable process arrangement, a reasonable construction period and eliminating safety hazards. Moreover, the simulation interaction system can guide the actual beam erection operation in real time during actual beam erection, greatly improves the efficiency of beam lifting and beam falling and ensures the beam falling precision through reasonable optimization of specific time-consuming processes, realizes the compatibility of precise positioning and efficient beam erection, and achieves the purpose of cost reduction and benefit increase.

Description

Technical Field

[0001] This invention relates to the field of offshore bridge construction technology, specifically to a simulation-interactive construction method and system for large floating crane bridge erection. Background Technology

[0002] Currently, the construction of cross-sea bridges is primarily carried out using large floating cranes. The conventional method for erecting beams using large floating cranes is as follows: A large floating crane (2200t) arrives at the beam-retrieving location. The anchoring position and number of anchors are determined based on the actual site conditions and deployed by an anchor boat. When the beam-carrying vessel enters a range of approximately 50m from the bow of the large floating crane, it is anchored for positioning. After the beam-carrying vessel is anchored and stable, the large floating crane connects the lifting pulley hook to the steel beam lifting point lugs and passes through the connecting shaft and necking clamp. After the large floating crane lifts the beam, the beam-carrying vessel retracts its cable and exits the beam-retrieving area, mooring at the designated position. After the beam-carrying vessel exits, the large floating crane continues to lift the steel beam and moves it forward to the vicinity of the beam-erection point. Once the steel beam is lifted to the corresponding position on the pier top, the large floating crane stops moving forward, performs positioning, and lowers the beam. The beam is lowered slowly in stages of 50cm, 20cm, and 10cm strokes, with the weight of the steel beam gradually shifting from the large floating crane to the support pads. Afterward, the steel beam lifting point pins are removed, and the large floating crane withdraws.

[0003] Erecting large steel box girders at sea using large floating cranes is a very difficult and high-risk task. The erection of girders by floating cranes is affected by many factors. Although the construction plan for floating crane girders can be planned and arranged in advance, the current method mainly uses two-dimensional space simulation. Two-dimensional space simulation can solve some problems, but there are various problems in complex environments that are not easily exposed. These problems are difficult to discover in two-dimensional space simulation. Once these problems are discovered on the construction site, more time and resources are needed to solve them. Although some demonstrations of simulated floating crane girders can be seen, they are mainly still in the stage of animation demonstration and have not yet achieved a virtual three-dimensional space simulation that fully corresponds to the real three-dimensional space coordinates.

[0004] Moreover, the existing measurement technology for large floating crane beam erection mainly adopts the method of setting measurement points by attaching reflective sheets at the height of the steel box girder, and then using a total station for manual precise positioning. This conventional technology has high accuracy and can meet the positioning requirements for beam erection, but the positioning efficiency is low and the labor cost is high. In the complex marine environment, every extra minute of construction time means more construction risks and costs. Therefore, the positioning technology for large floating crane beam erection urgently needs to be improved. Summary of the Invention

[0005] The purpose of this invention is to propose a simulation-interactive construction method and system for large-scale floating crane beams, in order to solve the technical problems described in the background art.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0007] A simulation-based interactive construction method for large floating crane beams includes the following steps:

[0008] Step S1: Based on the measured data, establish a three-dimensional model of the hoisting equipment components and construction scene in the simulation interactive system, delineate the dredging boundary and collision boundary, and ensure that the three-dimensional model is consistent with the size and geodetic coordinates of the real space;

[0009] Step S2: Input the initial beam erection scheme into the simulation interactive system and save it;

[0010] Step S3: In the simulation interactive system, the floating crane model is simulated along the travel route approved by the waterway management department according to the initial girder erection plan to carry out collision and grounding checks, and the simulation progress is displayed on the display terminal.

[0011] Step S4: If the distance between the floating crane model transport position and the dredging boundary or collision boundary reaches the set threshold, the early warning function is triggered, and the display terminal prompts to modify the beam erection scheme. After the beam erection scheme is modified, the simulation interaction system continues to perform simulation until all processes are simulated. The simulation interaction system then saves the final beam erection scheme.

[0012] Step S5: If the early warning function is not triggered during the simulation of the floating crane model, the simulation interaction system will save the initial girder erection scheme as the final girder erection scheme.

[0013] Step S6: Refer to the final girder erection plan to carry out actual girder erection construction, and update the simulation interactive system synchronously to guide the girder erection construction in real time.

[0014] Preferably, step S6 specifically includes,

[0015] Step S61: Install an ultrasonic depth sounder and a laser rangefinder with data transmission function on the hull of the floating crane; install a rotation angle measuring mechanism with data transmission function between the L-shaped boom and the boom base of the floating crane; install a first positioning mechanism with data transmission function on the lifting device of the floating crane; and install a second positioning mechanism with data transmission function on the steel box girder.

[0016] Step S62: Set a first reference point, a second reference point, and a third reference point on the lifting device model, the steel box girder model, and the L-shaped boom model of the three-dimensional model of the simulation interactive system, respectively. Collect parameters at the corresponding positions of the first reference point, the second reference point, and the third reference point, and display the real-time coordinate value of the first reference point, the real-time coordinate value of the second reference point, and the real-time rotation angle of the third reference point, respectively.

[0017] Step S63: Refer to the final girder erection scheme to carry out the actual girder erection construction process. The simulation interactive system receives measurement information from the floating crane's built-in positioning mechanism, ultrasonic depth sounder, laser rangefinder, rotation angle measuring mechanism, first positioning mechanism, and second positioning mechanism. Based on the measurement information from these mechanisms, the system calculates the real-time position and attitude of the floating crane hull, L-shaped boom, lifting gear, and steel box girder, and updates and adjusts the position and attitude of the 3D model within the system. During the floating crane transport process, the simulation interactive system performs collision detection and grounding detection by measuring the distance between the floating crane model and the dredging boundary and collision boundary in real time. It also provides collision warnings and grounding warnings based on the received measurement information from the ultrasonic depth sounder and laser rangefinder. When the floating crane lifts the girder, it guides the operation by comparing the real-time coordinate values ​​displayed at the first and second reference points. When the floating crane lowers the girder, it guides the operation by comparing the real-time coordinate values ​​displayed at the second reference point with the corresponding selected design coordinate points on the bridge alignment.

[0018] Preferably, the first positioning mechanism is a GNSS rover fixedly installed at the center point of the upper part of the moving pulley of the left and right hooks at the front end of the lifting device.

[0019] Preferably, the second positioning mechanism consists of four GNSS rover stations, which are fixedly installed at the four corners of the top of the steel box girder by steel reinforcement brackets.

[0020] Preferably, the simulation interaction system has two modes: automatic mode and human-computer interaction mode. In automatic mode, the simulation interaction system calculates the real-time position and attitude of the floating crane hull, L-shaped boom, lifting gear and steel box girder based on the measurement information of the floating crane hull's built-in positioning mechanism, rotation angle measuring mechanism, first positioning mechanism and second positioning mechanism, and automatically updates and adjusts the position and attitude of the three-dimensional model in the system. In human-computer interaction mode, the simulation interaction system updates and adjusts the position and attitude of the three-dimensional model in the system according to the instructions input by the operator.

[0021] This invention also provides a large-scale floating crane beam simulation interactive construction system, including a model processing module, a data input module, a data storage module, a simulation module, a display module, a parameter acquisition module, a data transmission module, and an early warning module;

[0022] The model processing module is used to establish a three-dimensional model of the hoisting equipment components and construction scene in the simulation interaction system, delineate the dredging boundary and collision boundary, and adjust and modify the model parameters based on the simulation feedback data from the simulation module.

[0023] The data input module is used to input the initial beam erection plan;

[0024] The data storage module is used to store the initial girder erection scheme input through the data input module and the final girder erection scheme simulated by the simulation module;

[0025] The simulation module is used in the simulation interaction system to simulate the floating crane model along the travel route approved by the waterway management department according to the predetermined bridge erection plan to carry out collision and grounding checks. When collision and grounding risks occur, the early warning module will provide early warning information. Alternatively, based on the information received by the data transmission module or the instructions input by the operator, the module will update and adjust the position and attitude of the three-dimensional model in the system and perform collision and grounding detection by measuring the distance between the floating crane model and the dredging boundary and collision boundary in real time. When collision and grounding risks occur, the early warning module will provide early warning information.

[0026] The display module is used to display the real-time image of the three-dimensional model under the current simulation process or the actual beam erection process, display warning information when there is a risk of collision or grounding, and display specific parameter information of the reference point after setting the reference point;

[0027] The parameter acquisition module is used to acquire specific parameters of the reference point corresponding to the specified 3D model and display them in real time through the display module.

[0028] The data transmission module is used to receive observation information collected by specific instruments during actual bridge erection and transmit it to the simulation module;

[0029] The early warning module is used to display early warning information via the display module when a collision risk or grounding risk occurs during the simulation process or the actual bridge erection process.

[0030] Preferably, the simulation interaction system further includes a human-computer interaction module, which is used to switch between the automatic mode and the human-computer interaction mode of the simulation interaction system. In the automatic mode, the simulation module automatically updates and adjusts the position and posture of the three-dimensional model in the system according to the information received by the data transmission module. In the human-computer interaction mode, the simulation module updates and adjusts the position and posture of the three-dimensional model in the system according to the instructions input by the operator.

[0031] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention, through human-computer interaction, drive engine, and digital twin technologies, conducts advance rehearsals and war games for beam erection under the premise of completely simulating real construction scenarios, providing a powerful tool for formulating reasonable work procedures, setting reasonable construction periods, and eliminating safety hazards. Moreover, the simulation interaction system of this invention can provide real-time guidance for actual beam erection operations during the actual beam erection process. By reasonably optimizing specific time-consuming procedures, it greatly improves the efficiency of beam lifting and lowering while ensuring beam lowering accuracy, achieving compatibility between precise positioning and efficient beam erection, and achieving the goal of cost reduction and efficiency improvement. Attached Figure Description

[0032] The above and / or other aspects and advantages of the present invention will become clearer and more readily understood through the following detailed description taken in conjunction with the accompanying drawings, which are merely illustrative and do not limit the invention, wherein:

[0033] Figure 1 This invention relates to a structural block diagram of a large-scale floating crane beam simulation interactive construction system;

[0034] Figure 2 This is a schematic diagram of the structure of the floating crane involved in the present invention during beam lowering operation;

[0035] Figure 3 This is a top view of the floating crane involved in the present invention;

[0036] Figure 4 This is a schematic diagram illustrating the relative relationship between the GNSS rover and the steel box girder involved in this invention.

[0037] Figure reference numerals: 1-Simulation interaction system, 101-Model processing module, 102-Data input module, 103-Data storage module, 104-Simulation module, 105-Display module, 106-Parameter acquisition module, 107-Data transmission module, 108-Early warning module, 109-Human-computer interaction module, 2-Floating crane, 201-Hull, 202-Support, 203-Wire rope, 204-L-shaped boom, 205-Boom base, 206-Lifting device, 3-Ultrasonic depth sounder, 4-Laser rangefinder, 5-Rotation angle measuring mechanism, 6-Steel box girder, 7-Reinforcing bar support, 8-GNSS rover, 9-Pier column. Detailed Implementation

[0038] In the following description, embodiments of a large-scale floating crane beam simulation interactive construction method and system according to the present invention will be described with reference to the accompanying drawings. The embodiments described herein are specific implementations of the present invention, used to illustrate the concept of the invention, and are illustrative and exemplary, and should not be construed as limiting the implementation or scope of the invention. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0039] In the description of this invention, it should be noted that the terms "front," "rear," "left," "right," "top," "bottom," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] The accompanying drawings in this specification are schematic diagrams to aid in illustrating the concept of the invention, and schematically show the shapes of the various parts and their interrelationships. Please note that, in order to clearly demonstrate the structure of the components in the embodiments of the invention, the drawings are not drawn to the same scale. The same reference numerals are used to indicate the same parts.

[0041] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments described are for illustrative purposes only and are not intended to limit the scope of the invention. The following description, in conjunction with... Figure 1-4 The preferred embodiments of the present invention will be described in further detail below:

[0042] like Figure 1 As shown, a preferred embodiment of the present invention, a large floating crane beam simulation interactive construction system, includes a model processing module 101, a data input module 102, a data storage module 103, a simulation module 104, a display module 105, a parameter acquisition module 106, a data transmission module 107, an early warning module 108, and a human-computer interaction module 109.

[0043] The model processing module 101 is used to establish a three-dimensional model of the hoisting equipment components and construction scene in the simulation interaction system 1, delineate the dredging boundary and collision boundary, and adjust and modify the model parameters according to the simulation feedback data of the simulation module 104.

[0044] The data input module 102 is used to input the initial beam erection plan;

[0045] The data storage module 103 is used to store the initial beam erection scheme input through the data input module 102 and the final beam erection scheme simulated by the simulation module 104.

[0046] The simulation module 104 is used in the simulation interaction system 1 to simulate the floating crane model along the travel route approved by the waterway management department according to the predetermined bridge erection scheme to carry out collision and grounding checks. When collision and grounding risks occur, the warning module 108 will give warning information. Alternatively, based on the information received by the data transmission module 107 or the instructions input by the operator, the system will update and adjust the position and attitude of the three-dimensional model and perform collision and grounding detection by measuring the distance between the floating crane model and the dredging boundary and collision boundary in real time. When collision and grounding risks occur, the warning module 108 will give warning information.

[0047] The display module 105 is used to display the real-time image of the three-dimensional model under the current simulation process or the actual beam erection process, display warning information when there is a risk of collision or grounding, and display specific parameter information of the reference point after setting the reference point;

[0048] The parameter acquisition module 106 is used to acquire specific parameters of the reference point corresponding to the specified three-dimensional model and display them in real time through the display module 105.

[0049] The data transmission module 107 is used to receive observation information collected by specific instruments during actual bridge erection and transmit it to the simulation module 104.

[0050] The early warning module 108 is used to display early warning information through the display module 105 when a collision risk or grounding risk occurs in the simulation process or the actual bridge erection process.

[0051] The human-computer interaction module 109 is used to switch between the automatic mode and the human-computer interaction mode of the simulation interaction system 1. In the automatic mode, the simulation module 104 automatically updates and adjusts the position and posture of the three-dimensional model in the system according to the information received by the data transmission module 107. In the human-computer interaction mode, the simulation module 104 updates and adjusts the position and posture of the three-dimensional model in the system according to the instructions input by the operator.

[0052] In addition, such as Figure 2-4 As shown, the present invention also provides a simulation-based interactive construction method for large floating crane beams, comprising the following steps:

[0053] Step S1: Based on the measured data, a three-dimensional model of the hoisting equipment components and construction scene is established in the simulation interaction system 1 through the model processing module 101, the dredging boundary and collision boundary are delineated, and the three-dimensional model is kept consistent with the size and geodetic coordinates of the real space.

[0054] Step S2: Input the initial beam erection scheme through the data input module 102 in the simulation interaction system 1 and save it;

[0055] Step S3: In the simulation interactive system 1, the simulation module 104 simulates the floating crane model along the walking route approved by the waterway management department according to the initial girder erection plan to conduct collision and grounding checks. The simulation progress is displayed on the display terminal through the display module 105. Before the simulation, the spatial position information of the surrounding structures is input into the three-dimensional model space. Through the simulated collision check, if it is found that the structure is less than 2m away from the floating crane model on the walking route, a collision warning is issued, and the construction of the structure is temporarily suspended until the girder erection is completed.

[0056] Step S4: If the distance between the floating crane model transport position and the dredging boundary or collision boundary reaches a set threshold, the early warning function is triggered. The simulation module 104 prompts the modification of the beam erection scheme on the display terminal through the early warning module 108 and the display module 105. After the beam erection scheme is modified, the simulation interaction system 1 continues to perform simulation until all processes are simulated. The simulation interaction system 1 saves the final beam erection scheme.

[0057] Step S5: If the early warning function is not triggered during the simulation of the floating crane model, the simulation interaction system 1 will save the initial girder erection scheme as the final girder erection scheme.

[0058] Step S6 involves conducting actual girder erection construction based on the final girder erection plan, and simultaneously updating the simulation interactive system 1 to provide real-time guidance for the girder erection construction. Specifically, this includes...

[0059] Step S61: An ultrasonic depth sounder 3 and a laser rangefinder 4 with data transmission function are installed on the hull 201 of the floating crane 2. A rotation angle measuring mechanism 5 with data transmission function is installed between the L-shaped boom 204 and the boom base 205 of the floating crane 2. A first positioning mechanism with data transmission function is installed on the lifting device 206 of the floating crane 2. A second positioning mechanism with data transmission function is installed on the steel box girder 6. The first positioning mechanism is a GNSS rover 8 fixedly installed at the center point of the upper part of the left and right hook pulleys at the front end of the lifting device 206. The second positioning mechanism consists of four GNSS rover 8. The four GNSS rover 8 are fixedly installed at the four corners of the top of the steel box girder 6 by steel bar supports 7. The GNSS rover 8 includes a navigation positioning device and a coordinate calculation device. The navigation positioning device is used to collect the navigation satellite observation values ​​of the GNSS rover 8 itself. The coordinate calculation device is used to calculate the three-dimensional spatial coordinates of the antenna phase center of the GNSS rover 8 based on the navigation satellite observation values.

[0060] Step S62: Set a first reference point, a second reference point, and a third reference point on the lifting device model, the steel box girder model, and the L-shaped boom model of the simulation interactive system 1 three-dimensional model, respectively. At the corresponding positions of the first reference point, the second reference point, and the third reference point, the parameter acquisition module 106 collects parameters and displays the real-time coordinate values ​​of the first reference point, the second reference point, and the third reference point, respectively. The setting of reference points can help the operator read the changes in the height of the lifting device 206 hook and the height of the steel box girder 6 ear plate with the rise and fall of the tide in real time, thereby guiding the operator to make real-time corrections and dynamic updates to the final beam erection scheme.

[0061] Step S63: Referring to the final girder erection scheme, the actual girder erection construction procedures are carried out sequentially for each steel box girder 6. The simulation interaction system 1 receives the measurement information from the positioning mechanism, ultrasonic depth sounder 3, laser rangefinder 4, rotation angle measuring mechanism 5, first positioning mechanism, and second positioning mechanism of the floating crane 2 hull 201 through the data transmission module 107. Based on the measurement information from the positioning mechanism, rotation angle measuring mechanism 5, first positioning mechanism, and second positioning mechanism of the floating crane 2 hull 201, the simulation interaction system 1 calculates the real-time position and attitude of the floating crane 2 hull 201, L-shaped boom 204, lifting device 206, and steel box girder 6 through the simulation module 104, and updates and adjusts the position and attitude of the three-dimensional model in the system. In order to improve the human-computer interaction process... The simulation system 1 provides two modes for updating and adjusting the position and attitude of the 3D model: automatic and human-computer interaction. Operators can switch between these modes via the human-computer interaction module 109. In automatic mode, the simulation system 1 calculates the real-time position and attitude of the floating crane 2 hull 201, L-shaped boom 204, lifting device 206, and steel box girder 6 using the simulation module 104 based on the measurement information received by the data transmission module 107 from the positioning mechanism, rotation angle measuring mechanism 5, first positioning mechanism, and second positioning mechanism of the floating crane 2 hull 201. The system then automatically updates and adjusts the position and attitude of the 3D model. In human-computer interaction mode, the simulation system 1 adjusts the position and attitude of the 3D model based on the operator's input via mouse, keyboard, etc. The system updates and adjusts the position and orientation of the 3D model based on commands input from external devices. The display interface includes menu buttons for page navigation, and the right mouse button and scroll wheel allow for zooming and rotation. Pressing the O and P keys on the keyboard rotates the L-shaped crane model from 0-20°, while pressing the T key enables automatic navigation. Pressing the W / S / Q / E keys moves the floating crane model forward, backward, left, and right. Pressing the A / D keys or the left / right movement keys rotates the model left / right. During the transport process of the floating crane 2, the simulation interaction system 1 uses the simulation module 104 to measure the distance between the floating crane model and the dredging boundary and collision boundary in real time for collision detection and grounding detection. When the front end of the floating crane hull model reaches 2m from the dredging boundary, the alarm function is triggered, and "Reached dredging boundary" is displayed on the screen. Floating crane 2 cannot continue to move closer. Pressing the "Exit" button on the display panel will exit the display panel. A collision boundary is set at 2m from the boundary of each structure (including temporary structures). When the front end of the floating crane hull model reaches 2m from the boundary of the structure, the alarm function is triggered, and "Reached 2m safety boundary" is displayed on the screen. Floating crane 2 cannot continue to move forward. Pressing the "Exit" button on the display panel will exit the display panel. The simulation interactive system 1 uses the measurement information received by the ultrasonic depth sounder 3 and laser rangefinder 4 through the data transmission module 107 to provide collision warnings and grounding warnings, which are promptly displayed on the display terminal to remind construction personnel.The ultrasonic depth sounder 3 can monitor the seawater depth around the floating crane 2 in real time to ensure that the draft of the floating crane 2 is met and to avoid grounding. The laser rangefinder 4 can detect collisions between the floating crane 2 and surrounding vessels, temporary structures (drilled pile working platform, temporary steel trestle bridge, steel sheet pile cofferdam, etc.) and permanent structures (drilled piles, abutments, piers, etc.) in real time to ensure the safety of the transport process. When the floating crane 2 lifts the beam, the operation is guided by comparing the real-time coordinate values ​​displayed at the first reference point and the second reference point. When the floating crane 2 lowers the beam, the operation is guided by comparing the real-time coordinate values ​​displayed at the second reference point with the corresponding selected design coordinate points on the bridge alignment. The operators need to calculate and clarify the relative numerical relationship between the first reference point and the second reference point during the beam lifting operation, and the relative numerical relationship between the second reference point and the design coordinate point during the beam lowering operation. Then, by comparing the numerical relationships, the movement of the lifting device 206 is adjusted to achieve efficient beam lifting and lowering operations.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A simulation-based interactive construction method for large-scale floating crane beams, characterized in that, Includes the following steps: Step S1: Based on the measured data, establish a three-dimensional model of the hoisting equipment components and construction scene in the simulation interaction system (1), delineate the dredging boundary and collision boundary, and ensure that the three-dimensional model is consistent with the size and geodetic coordinates of the real space; Step S2: Input the initial beam erection scheme in the simulation interactive system (1) and save it; Step S3: In the simulation interactive system (1), the floating crane model is simulated along the travel route approved by the waterway management department according to the initial beam erection scheme to carry out collision and grounding checks, and the simulation progress is displayed on the display terminal. Step S4: If the distance between the floating crane model transport position and the dredging boundary or collision boundary reaches the set threshold, the early warning function is triggered, and the beam erection scheme is prompted to be modified on the display terminal. After the beam erection scheme is modified, the simulation interaction system (1) continues to perform simulation until all processes are simulated. The simulation interaction system (1) saves the final beam erection scheme. Step S5: If the early warning function is not triggered during the simulation of the floating crane model, the simulation interaction system (1) will save the initial beam erection scheme as the final beam erection scheme. Step S6: Refer to the final girder erection scheme to carry out actual girder erection construction, and update it synchronously in the simulation interactive system (1) to guide the girder erection construction in real time. The specific steps include the following: Step S61: An ultrasonic depth sounder (3) and a laser rangefinder (4) with data transmission function are installed on the hull (201) of the floating crane (2). A rotation angle measuring mechanism (5) with data transmission function is installed between the L-shaped boom (204) and the boom base (205) of the floating crane (2). A first positioning mechanism with data transmission function is installed on the lifting device (206) of the floating crane (2). A second positioning mechanism with data transmission function is installed on the steel box girder (6). Step S62: Set a first reference point, a second reference point and a third reference point on the lifting device model, the steel box girder model and the L-shaped boom model of the three-dimensional model of the simulation interactive system (1), respectively. Collect parameters at the corresponding positions of the first reference point, the second reference point and the third reference point, and display the real-time coordinate value of the first reference point, the real-time coordinate value of the second reference point and the real-time rotation angle of the third reference point respectively. Step S63, refer to the final girder erection scheme to carry out the actual girder erection construction process. The simulation interaction system (1) receives the measurement information of the floating crane (2) hull (201) with its own positioning mechanism, ultrasonic depth sounder (3), laser rangefinder (4), rotation angle measuring mechanism (5), first positioning mechanism and second positioning mechanism. Based on the measurement information of the floating crane (2) hull (201) with its own positioning mechanism, rotation angle measuring mechanism (5), first positioning mechanism and second positioning mechanism, the real-time position and attitude of the floating crane (2) hull (201), L-shaped boom (204), lifting tool (206) and steel box girder (6) are calculated and the position and attitude of the three-dimensional model are updated and adjusted in the system. During the floating crane (2) barge transportation process, the simulation interaction system (1) performs collision detection and grounding detection by measuring the distance between the floating crane model and the dredging boundary and collision boundary in real time, and performs collision warning and grounding warning by receiving the measurement information of ultrasonic depth sounder (3) and laser rangefinder (4).

2. The simulation-interactive construction method for large floating crane beams according to claim 1, characterized in that: In step S63, when the floating crane (2) lifts the beam, the operation is guided by comparing the real-time coordinate values ​​displayed at the first reference point and the second reference point. When the floating crane (2) lowers the beam, the operation is guided by comparing the real-time coordinate values ​​displayed at the second reference point with the corresponding selected design coordinate points on the bridge alignment.

3. The simulation-interactive construction method for large floating crane beams according to claim 1, characterized in that: The first positioning mechanism is a GNSS rover (8) fixedly installed at the center point of the upper part of the left and right hook pulleys at the front end of the lifting device (206).

4. The simulation-interactive construction method for large floating crane beams according to claim 1, characterized in that: The second positioning mechanism consists of four GNSS rover stations (8), which are fixedly installed at the four corners of the top of the steel box girder (6) by steel bar supports (7).

5. The simulation-interactive construction method for large floating crane beams according to claim 1, characterized in that: The simulation interaction system (1) has two modes: automatic mode and human-computer interaction mode. In automatic mode, the simulation interaction system (1) calculates the real-time position and attitude of the floating crane (2) hull (201), L-shaped boom (204), lifting device (206) and steel box girder (6) based on the measurement information of the floating crane (2) hull (201) with its own positioning mechanism, rotation angle measuring mechanism (5), first positioning mechanism and second positioning mechanism, and automatically updates and adjusts the position and attitude of the three-dimensional model in the system. In human-computer interaction mode, the simulation interaction system (1) updates and adjusts the position and attitude of the three-dimensional model in the system according to the instructions input by the operator.

6. A large-scale floating crane beam simulation interactive construction system, characterized in that: It includes a model processing module (101), a data input module (102), a data storage module (103), a simulation module (104), a display module (105), a parameter acquisition module (106), a data transmission module (107), and an early warning module (108). The model processing module (101) is used to establish a three-dimensional model of the hoisting equipment components and construction scene in the simulation interaction system (1), delineate the dredging boundary and collision boundary, and adjust and modify the model parameters according to the simulation feedback data of the simulation module (104). The data input module (102) is used to input the initial beam erection scheme; The data storage module (103) is used to store the initial beam erection scheme input through the data input module (102) and the final beam erection scheme simulated by the simulation module (104); The simulation module (104) is used to simulate the floating crane model along the walking route approved by the waterway management department in the simulation interaction system (1) according to the predetermined beam erection scheme to carry out collision and grounding checks. When collision and grounding risks occur, the warning module (108) provides warning information. Alternatively, the module updates and adjusts the position and attitude of the three-dimensional model in the system according to the information received by the data transmission module (107) or the instructions input by the operator. It also performs collision and grounding detection by measuring the distance between the floating crane model and the dredging boundary and collision boundary in real time. When collision and grounding risks occur, the warning module (108) provides warning information. The display module (105) is used to display the real-time image of the three-dimensional model under the current simulation process or the actual beam erection process, display warning information when there is a risk of collision or grounding, and display specific parameter information of the reference point after setting the reference point; The parameter acquisition module (106) is used to acquire specific parameters of the reference point corresponding to the specified three-dimensional model and display them in real time through the display module (105); The data transmission module (107) is used to receive observation information collected by specific instruments during actual bridge erection and transmit it to the simulation module (104). The warning module (108) is used to display warning information through the display module (105) when a collision risk or grounding risk occurs in the simulation process or the actual beam erection process.

7. The large-scale floating crane beam simulation interactive construction system according to claim 6, characterized in that: The simulation interaction system (1) also includes a human-computer interaction module (109). The human-computer interaction module (109) is used to switch between the automatic mode and the human-computer interaction mode of the simulation interaction system (1). In the automatic mode, the simulation module (104) automatically updates and adjusts the position and posture of the three-dimensional model in the system according to the information received by the data transmission module (107). In the human-computer interaction mode, the simulation module (104) updates and adjusts the position and posture of the three-dimensional model in the system according to the instructions input by the operator.

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