Steel structure installation method, system and equipment based on laser scanning and BIM fusion

Abstract

The application relates to the technical field of intelligent installation control systems, in particular to a steel structure installation method, system and equipment based on laser scanning and BIM fusion. The application provides a steel structure installation method based on laser scanning and BIM fusion, three-dimensional point cloud data of components are acquired through laser scanning, comparison and analysis are conducted on the three-dimensional point cloud data and a BIM theoretical model, and the actual state of the components is accurately mastered; the construction site is scanned according to the actual deviation value of the components, and spatial data of an installation position is acquired; the actual measurement data and the site data of the components are imported into a BIM system for virtual pre-assembly, and installation guidance parameters are generated; in the installation process, a monitoring system is established based on the guidance parameters, the position change of the components is tracked in real time, and adjustment instructions are generated. The application realizes accurate control of the whole process of steel structure installation, and improves construction efficiency and installation quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent installation control systems, in particular to a steel structure installation method, system and equipment based on laser scanning and BIM fusion. BACKGROUND

[0002] With the continuous improvement of the degree of building industrialization, steel structures are applied due to their high construction efficiency, light structure weight and good seismic performance. The installation quality of steel structures is directly related to the safety and service life of buildings, so how to ensure the installation precision of steel structure components has become an important research topic in the field of building construction.

[0003] At present, laser scanning technology can realize rapid three-dimensional measurement of steel structure components, and BIM technology can simulate the construction process digitally. Based on the fusion application system of the two technologies, the actual size data of the components can be automatically obtained and compared with the design model, thereby assisting the installation positioning of the construction personnel.

[0004] However, the existing technology only stays at the level of detection and positioning of single components, and cannot realize dynamic monitoring and precise adjustment of the entire installation process. At the same time, due to the lack of comprehensive consideration of the actual situation of the construction site, the problem of disconnection between theoretical guidance and actual construction often occurs, which affects the construction efficiency and installation quality, and this situation needs to be further improved. SUMMARY

[0005] In order to solve the problems that the existing fusion application system cannot realize dynamic monitoring and precise adjustment of the entire installation process, lacks comprehensive consideration of the actual situation of the construction site, and has low construction efficiency and installation quality, the present application provides a steel structure installation method, system and equipment based on laser scanning and BIM fusion, which adopts the following technical solutions:

[0006] In a first aspect, the present application provides a steel structure installation method based on laser scanning and BIM fusion, comprising the following steps:

[0007] Scanning the steel structure component to obtain three-dimensional point cloud data of the component;

[0008] Comparing and analyzing the three-dimensional point cloud data with a preset BIM theoretical model to obtain an actual deviation value of the component;

[0009] According to the actual deviation value of the component, scanning the installation position of the construction site to obtain installation area space data;

[0010] According to the three-dimensional point cloud data and the installation area space data, performing virtual pre-assembly in the BIM system to obtain installation guidance parameters;

[0011] According to the installation guidance parameter, a component parameter in the installation process is monitored in real time, an installation deviation value is obtained, and an adjustment instruction is generated according to the installation deviation value.

[0012] By adopting the technical scheme, the steel structure component is scanned by a laser scanner, high-precision three-dimensional point cloud data is obtained, and the data is compared with a BIM theoretical model in real time, so that the actual state of the component is accurately mastered; then, based on the obtained component actual deviation value, an installation position of a construction site is accurately scanned, and site space data is obtained; then, the measured data of the component and the site space data are imported into a BIM system, the whole installation process is simulated through virtual pre-assembly, and detailed installation guidance parameters are generated; finally, in the actual installation process, a monitoring system is established according to the guidance parameters, the position change of the component is tracked in real time, and corresponding adjustment instructions are generated when a deviation is found; through the digital means, accurate control of the whole steel structure installation process is realized, the actual situation of the construction site is monitored, and the construction efficiency and installation quality are improved.

[0013] Optionally, according to the three-dimensional point cloud data, a preset BIM theoretical model is compared and analyzed to obtain a component actual deviation value, and the method specifically includes the following steps:

[0014] According to the three-dimensional point cloud data and the preset BIM theoretical model, a position deviation of a key connection node of the component, a component axis deviation and a cross-section size deviation are calculated;

[0015] According to the position deviation, the component axis deviation and the cross-section size deviation, a weighted deviation coefficient of each measuring point is calculated;

[0016] According to the weighted deviation coefficient, a matching degree of the component and a design requirement is evaluated to obtain a local deviation value of a key part;

[0017] According to the local deviation value, a component overall deviation evaluation value is calculated, and the component actual deviation value is determined according to a preset installation precision level.

[0018] By adopting the technical scheme, firstly, the three-dimensional point cloud data acquired is registered with the BIM theoretical model, the position deviation of the key connecting nodes of the component, the spatial deviation of the component axis and the cross-section size deviation are respectively calculated, and the geometric feature change of the component is comprehensively mastered; then, considering that different measuring points have different influence weights on the installation accuracy of the component, a weighted calculation mechanism is introduced, the weighted deviation coefficient of the measuring points is calculated according to the various deviation data, so that the evaluation result is more in line with the engineering practice; then, the matching degree of the component and the design requirement is quantitatively evaluated based on the weighted deviation coefficient, and the local deviation condition of the key position is mainly analyzed; finally, the overall deviation evaluation value of the component is obtained by comprehensively calculating the local deviation value, and accurate judgment is made on the actual deviation value of the component in combination with the installation accuracy grade requirement in the engineering specification; not only the comprehensive evaluation of the component deviation is realized, but also the scientificity of the evaluation result is ensured through reasonable weight distribution.

[0019] Optionally, the method further comprises the following steps:

[0020] According to the position deviation of the key connecting nodes of the component, the assembly gap value between the adjacent components is acquired, and the prestress parameter and the deformation allowable value of the connecting position are determined according to the assembly gap value;

[0021] According to the prestress parameter and the deformation allowable value, a prediction model of the stress deformation of the component is established;

[0022] According to the prediction model, the stress and strain state of the component in the installation process is analyzed, and the deformation control value of the installation process is obtained;

[0023] When the actual deformation exceeds the deformation control value, an adjustment compensation parameter is output.

[0024] By adopting the technical scheme, firstly, the actual assembly gap value between the adjacent components is calculated based on the acquired position deviation data of the key connecting nodes of the component, and the required prestress parameter of the connecting position is determined according to the gap value, and a reasonable deformation allowable value is set in combination with the engineering specification; then, the measured parameters are input into the specially established mechanical model, and a prediction model reflecting the actual stress state of the component is constructed; then, the stress and strain state of the component in the whole installation process is dynamically analyzed by using the prediction model, and the deformation control value of each stage is obtained; finally, the component deformation is monitored in real time in the actual installation process, and when it is detected that the actual deformation exceeds the control value, the system immediately calculates and outputs the corresponding adjustment compensation parameter; by establishing the prediction model based on the measured data, the accurate prediction and control of the component deformation are realized, not only the excessive deformation of the component in the installation process is avoided, but also the clear adjustment basis is provided for the construction personnel.

[0025] Optionally, according to the installation guidance parameters, the component parameters in the installation process are monitored in real time, installation deviation values are obtained, and adjustment instructions are generated based on the installation deviation values, specifically including the following steps:

[0026] According to the installation guidance parameters, a hierarchical installation precision monitoring network is established, wherein the hierarchical installation precision monitoring network includes dividing the steel structure into a rigid connection area, a hinged connection area, and a sliding connection area according to the node connection type, and dividing the monitoring points into a main force node, a secondary force node, and a general connection point according to the structure importance.

[0027] According to the monitoring network, spatial position, inclination angle, and connection deformation data of the components are collected in real time.

[0028] Regions exceeding the installation allowable deviation are highlighted, and stress transmission paths of the deviation regions are analyzed to obtain stress characteristic parameters of the deviation regions, wherein the allowable deviation values of different regions and levels are different.

[0029] According to the stress characteristic parameters, adjustment instructions are generated.

[0030] By adopting the technical solution, the entire steel structure is divided into a rigid connection area, a hinged connection area, and a sliding connection area according to the structural characteristics of the node connection, and the monitoring points are divided into a main force node, a secondary force node, and a general connection point according to the importance of the structure stress, thereby establishing a multi-dimensional monitoring network. Then, based on the monitoring network, spatial position coordinates of the monitoring points, component inclination angles, and deformation data of the node connections are collected in real time. Next, the data analysis system quickly identifies regions exceeding the allowable deviation, highlights these regions, and uses a mechanical analysis method to track the stress transmission path in the structure to obtain characteristic parameters reflecting the actual stress state of the deviation regions. Finally, based on the stress characteristic parameters, the system automatically generates adjustment instructions including adjustment direction, adjustment amount, and other specific contents. By establishing a hierarchical monitoring system, the differential monitoring of different types of nodes is realized, the monitoring pertinence and efficiency are improved, and a rapid response mechanism from monitoring to adjustment is established.

[0031] Optionally, according to the stress characteristic parameters, adjustment instructions are generated, specifically including the following steps:

[0032] The stress distribution range and the corresponding deformation of the current component are obtained, and the actual stress state of the current structure is analyzed according to the stress distribution range and the deformation.

[0033] The deviation value between the stress characteristic parameters and the actual stress state is calculated, and the component adjustment scheme is determined according to the deviation value.

[0034] obtaining a current installation feature of the component, layer-by-layer analyzing an influence effect of each adjustment step on the current installation feature to obtain an adjustment operation sequence;

[0035] optimizing and adjusting an original installation procedure of the component according to the adjustment scheme and the adjustment operation sequence to generate an adjustment instruction.

[0036] By adopting the technical scheme, the stress analysis system is used to obtain a current stress distribution range of the component, and a numerical model reflecting an actual stress state of the structure is established in combination with measured deformation data; then, the obtained stress characteristic parameters are compared and analyzed with the actual stress state, a deviation value between the stress characteristic parameters and the actual stress state is calculated, and based on the deviation data, a preliminary component adjustment scheme is formulated in combination with structural mechanics principles; then, the influence effect of each proposed adjustment step is analyzed considering an actual installation state of the component, stress changes and deformation developments possibly caused by the adjustment operation are evaluated, and an optimal adjustment operation sequence is determined through layer-by-layer analysis; finally, the adjustment scheme and the adjustment operation sequence are integrated, the original installation procedure is optimized and adjusted, and a construction adjustment instruction including a specific adjustment method, an adjustment amount and an operation sequence is generated; not only the scientificity and feasibility of the adjustment operation are ensured, but also secondary deformation in the adjustment process is effectively avoided.

[0037] Optionally, a deviation value between the stress characteristic parameters and the actual stress state is calculated, and the component adjustment scheme is determined according to the deviation value, and specifically includes the following steps:

[0038] According to the deviation value between the stress characteristic parameters and the actual stress state, an influence degree of the actual stress state on the overall stability of the structure in the case of not being adjusted is estimated;

[0039] An actual deformation degree of the component under the current stress state is obtained;

[0040] The influence degree of the structure stability is compared with the actual deformation degree, and a difference value between the influence degree and the actual deformation degree is calculated;

[0041] According to the difference value, whether the current adjustment scheme is reasonable is judged, and a structure performance after adjustment is predicted;

[0042] According to the structure performance prediction result, an adjustment intensity of each construction step is adjusted.

[0043] By adopting the technical scheme, firstly, based on the deviation value between the measured stress characteristic parameter and the actual stress state, the present situation is simulated through a structural calculation analysis system, the influence degree of the deviation on the overall stability of the structure is estimated without adjustment, and a benchmark evaluation index is established; then, actual deformation data of the component under the current stress state is obtained through a field monitoring system, and the deformation development state of the structure is comprehensively mastered; then, the predicted influence degree of the structure stability and the measured deformation degree are quantitatively compared, and the difference value therebetween is calculated, and the difference value reflects the adaptability of the structure system to deformation; then, based on the calculated difference value, combined with structural dynamic characteristic analysis, it is judged whether the initially prepared adjustment scheme meets the stability requirement, and meanwhile, the overall performance index of the structure after adjustment is predicted through numerical simulation; finally, according to the structure performance prediction result, the adjustment intensity of each adjustment step in the construction scheme is accurately calculated and dynamically optimized, so that the adjustment process is always in a controllable state; by making the stability evaluation run through the whole adjustment process, dynamic optimization of the adjustment scheme is realized, not only the safety of the adjustment process is ensured, but also the predictability of the adjustment effect is improved.

[0044] Optionally, according to the adjustment scheme and the adjustment operation sequence, the original installation process of the component is optimized and adjusted, and corresponding construction process parameters are generated, specifically including the following steps:

[0045] The deformation characteristics of each connecting node under the current construction environment are obtained, and the cooperative deformation time of adjacent nodes is calculated according to the deformation characteristics and the corresponding adjustment intensity;

[0046] According to the cooperative deformation time and the corresponding adjustment operation sequence, the stress transmission ratio of the adjacent nodes is calculated;

[0047] According to the stress transmission ratio, the adjustment range corresponding to the adjacent nodes is adjusted, and the stability coefficient of the adjacent nodes reaching mechanical equilibrium is calculated according to the adjusted adjustment range;

[0048] According to the stability coefficient, the original installation process of the component is optimized and adjusted, and an adjustment instruction is generated.

[0049] By adopting the technical scheme, the actual deformation characteristics of each connecting node under the construction environment are acquired through the field monitoring system, and a node response model is established by combining the determined adjustment intensity, so as to calculate the cooperative deformation time between adjacent nodes, and the time parameter reflects the transmission lag effect of the node deformation; then, the cooperative deformation time is combined with the adjustment operation sequence, and the stress transmission ratio between adjacent nodes is determined through mechanical analysis, and the ratio reflects the mutual influence degree between the nodes; then, the adjustment range of adjacent nodes is dynamically adjusted based on the calculated stress transmission ratio, and the stable coefficient of each node when reaching mechanical balance is determined through iterative calculation, and the coefficient is an important index for judging whether the node adjustment is in place; finally, the original installation process is systematically optimized according to the stable coefficient of each node, and detailed construction instructions including adjustment time sequence, adjustment amplitude and operation points are generated; the coordinated control of the multi-node adjustment process is realized, the stress concentration and rebound phenomenon in the node adjustment process are avoided, and the adjustment efficiency and accuracy are improved.

[0050] In a second aspect, the application provides a steel structure installation system based on laser scanning and BIM fusion, comprising:

[0051] a three-dimensional point cloud data acquisition module for scanning a steel structure component to obtain three-dimensional point cloud data of the component;

[0052] a component actual deviation value acquisition module for comparing and analyzing the three-dimensional point cloud data with a preset BIM theoretical model to obtain a component actual deviation value;

[0053] a regional space data acquisition module for scanning an installation location of a construction site according to the component actual deviation value to obtain installation regional space data;

[0054] an installation guidance parameter acquisition module for performing virtual pre-assembly in a BIM system according to the three-dimensional point cloud data and the installation regional space data to obtain installation guidance parameters;

[0055] an adjustment instruction generation module for monitoring component parameters in an installation process in real time to obtain installation deviation values, and generating adjustment instructions according to the installation deviation values.

[0056] In a third aspect, the application provides an electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the steel structure installation method based on laser scanning and BIM fusion.

[0057] In summary, the application has at least one of the following beneficial technical effects:

[0058] The application provides a steel structure installation method based on laser scanning and BIM fusion, three-dimensional point cloud data of a component is acquired through laser scanning, and comparison and analysis are conducted on the three-dimensional point cloud data and a BIM theoretical model, so that the actual state of the component is accurately mastered; the construction site is scanned according to the actual deviation value of the component, and spatial data of an installation position is acquired; the measured data of the component and the site data are imported into a BIM system for virtual pre-assembly, and installation guidance parameters are generated; in the installation process, a monitoring system is established based on the guidance parameters, the position change of the component is tracked in real time, and adjustment instructions are generated; the accurate control of the whole process of steel structure installation is realized, and the construction efficiency and installation quality are improved.

[0059] In the application, the three-dimensional point cloud data is matched with the BIM theoretical model, the position deviation of a connecting node, the spatial deviation of an axis and the size deviation of a section are calculated, and the geometric feature change of the component is mastered; a weighted calculation mechanism is introduced, the weighted deviation coefficient is calculated according to the importance of different measuring points; the matching degree of the component and the design requirement is evaluated based on the weighted deviation coefficient, and the local deviation of the key part is analyzed; finally, the overall deviation evaluation value is calculated comprehensively, the actual deviation value of the component is determined in combination with the installation precision grade requirement; the overall evaluation of the component deviation is realized, and the scientificity of the evaluation result is ensured.

[0060] In the application, the steel structure is divided into a rigid connection area, a hinged connection area and a sliding connection area according to the connecting characteristics of the nodes, and the monitoring points are divided into main force nodes, secondary force nodes and general connection points according to the importance of the structure, and a multi-dimensional monitoring network is established; the spatial position, the inclination angle and the deformation data of each monitoring point are collected in real time; the out-of-tolerance area is identified and the stress transmission path is analyzed, and the stress characteristic parameters are obtained; the adjustment instructions are generated according to the stress characteristic parameters; the differential monitoring is realized, and the rapid response mechanism is established. BRIEF DESCRIPTION OF DRAWINGS

[0061] Figure 1 FIG. 1 is a flowchart of a steel structure installation method based on laser scanning and BIM fusion according to an embodiment of the application;

[0062] Figure 2 FIG. 2 is a flowchart of step S200 in the steel structure installation method based on laser scanning and BIM fusion according to an embodiment of the application; Figure 1

[0063] Figure 3 FIG. 3 is a flowchart of step S200 in the steel structure installation method based on laser scanning and BIM fusion according to an embodiment of the application; Figure 2

[0064] Figure 4 FIG. 4 is a flowchart of step S500 in the steel structure installation method based on laser scanning and BIM fusion according to an embodiment of the application;

[0065] Figure 5 ​​is a flowchart of step S540 in a steel structure installation method based on laser scanning and BIM fusion according to an embodiment of the present application.

[0066] Figure 6 is a flowchart of step S542 in a steel structure installation method based on laser scanning and BIM fusion according to an embodiment of the present application.

[0067] Figure 7 is a flowchart of step S544 in a steel structure installation method based on laser scanning and BIM fusion according to an embodiment of the present application.

[0068] Figure 8 is a module schematic diagram of a steel structure installation system based on laser scanning and BIM fusion according to an embodiment of the present application.

[0069] Figure 9 is an internal structure diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0070] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and the appended claims of the application, the singular forms "a," "an" and "the" are intended to include both singular and plural forms, unless the context clearly indicates otherwise. It will be further understood that the terms "and / or," as used in the specification and in the claims, are used to mean any one of the items listed or all possible combinations of the items.

[0071] Hereinafter, the terms "first" and "second" are used only for the purpose of description and should not be understood as implying or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0072] The embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0073] In a first aspect, the present application provides a steel structure installation method based on laser scanning and BIM fusion, referring to Figure 1 , comprising the following steps:

[0074] S100, scanning a steel structure component to obtain component three-dimensional point cloud data.

[0075] In this embodiment, laser scanning refers to a measurement method that uses a laser scanner to emit a laser beam and receive a reflected signal, and three-dimensional point cloud data refers to a data set composed of a large number of spatial coordinate points, which have spatial position information and reflection intensity information; the BIM theoretical model refers to a three-dimensional digital model with complete geometric information and physical properties established in the building information model.

[0076] Specifically, first, a fixed laser scanner is used to scan the steel structure member in all directions. When scanning, multiple scanning stations are arranged around the member, and the number of scanning stations is determined according to the size and complexity of the member. The adjacent stations need to maintain a suitable overlap area to ensure the data splicing accuracy. For large members, a regional scanning method can be used to divide the member into several scanning regions. In each region, the laser scanner emits a laser beam through a high-speed rotating mirror, and simultaneously receives the signal reflected from the surface of the member. The system records the three-dimensional coordinates and reflection intensity of each reflection point to form dense point cloud data. After scanning is completed, a registration algorithm is used to splice the data of each station into a complete three-dimensional point cloud model of the member.

[0077] S200, according to the three-dimensional point cloud data, a comparison analysis is performed with the preset BIM theoretical model to obtain an actual deviation value of the member.

[0078] In this embodiment, the comparison analysis refers to the process of spatial registration and geometric feature comparison between the measured three-dimensional point cloud data and the BIM theoretical model established in the design stage; the actual deviation value of the member includes the position deviation of the key connection node of the member, the spatial deviation of the member axis, and the cross-sectional size deviation.

[0079] Specifically, the obtained three-dimensional point cloud data is imported into the modeling software, and spatial registration is performed with the BIM theoretical model through a feature point matching method. First, the connection node position, axis direction, and cross-sectional contour line are extracted as feature points in the point cloud data and the BIM model. A feature point correspondence table is established to record the spatial coordinates of each feature point. An iterative closest point algorithm is used to calculate the best matching transformation matrix between the two sets of feature points to achieve accurate alignment of the point cloud data and the BIM model. After registration is completed, the difference between the actual position and the theoretical position of each type of feature point is calculated to obtain the actual deviation value of the member.

[0080] S300, according to the actual deviation value of the member, scanning the installation position of the construction site to obtain spatial data of the installation area.

[0081] In this embodiment, the spatial data of the installation area refers to the three-dimensional geometric information of the installation position of the construction site, including the spatial position of the support structure, the connection interface of the adjacent members, and the range information of the construction operation space.

[0082] Specifically, according to the obtained actual deviation value of the component, a region requiring focused scanning in the construction site is determined. A reflective target is arranged in the installation region for subsequent data registration. A portable laser scanner is used to perform multi-station scanning on the construction site to obtain spatial position data of the support structure and adjacent components. A database of on-site obstacles is established to record position information of temporary facilities and equipment pipelines in the construction region that affect installation. The obtained spatial data is unified in coordinates and fused to generate a complete three-dimensional model of the construction site.

[0083] In S400, virtual pre-assembly is performed in the BIM system according to the three-dimensional point cloud data and the installation region spatial data, and installation guidance parameters are obtained.

[0084] In this embodiment, the virtual pre-assembly refers to simulating the installation process of the steel structure component in the computer; the installation guidance parameters include a target installation position, an attitude angle of the component, a reserved gap of a connecting node, and arrangement requirements of a temporary support.

[0085] Specifically, the three-dimensional point cloud data of the component and the spatial data of the construction site are imported into the BIM system, an installation procedure database is established, and the installation sequence, hoisting path, and positioning mode of each component are recorded. The entire installation process is simulated in a virtual environment, and collision interference between components is checked. Through forward and reverse deduction, the installation procedure is optimized, and target position parameters at each stage are determined. A node connection mapping table is established, and according to the characteristics of different types of connecting nodes, the reserved gap and temporary support requirements are determined.

[0086] In S500, a component parameter in the installation process is monitored in real time according to the installation guidance parameters, an installation deviation value is obtained, and adjustment instructions are generated according to the installation deviation value.

[0087] In this embodiment, the installation deviation value refers to the deviation degree between the actual installation position of the component and the target position; the adjustment instructions include an adjustment direction, an adjustment amount, and operation steps.

[0088] Specifically, a site monitoring system is established according to the installation guidance parameters, and a total station instrument is used to track the position change of the component in real time. Displacement sensors are arranged at key connecting nodes to monitor node deformation. An early warning index system is established, and the allowed deviation range of each parameter is set. When the monitoring data exceeds the early warning value, the system automatically analyzes the causes of the deviation, and generates construction instructions containing specific adjustment directions and adjustment amounts.

[0089] In one embodiment, with reference to Figure 2 In S200, the actual deviation value of the component is obtained by comparing and analyzing the three-dimensional point cloud data with a preset BIM theoretical model, and specifically includes the following steps:

[0090] S210, calculate the position deviation of the key connection node of the component, the axis deviation of the component and the cross-section size deviation according to the three-dimensional point cloud data and the preset BIM theoretical model.

[0091] In this embodiment, the key connection node of the component refers to an important node on the steel structure component connected with other components, including bolt connection holes, welding interfaces and embedded part interfaces; the axis deviation of the component refers to the spatial position offset of the main axis of the component from the design position; and the cross-section size deviation refers to the geometric size difference between the actual cross-section of the component and the design cross-section.

[0092] Specifically, first, a node feature database is established, and the connection nodes on the component are classified and marked according to types. The least square method is used to fit the point cloud data to obtain the actual axis of the component, and the axis deviation is obtained through spatial vector calculation. The actual cross-section size of the component at each position is obtained through a cross-section contour line extraction algorithm. A geometric feature comparison table is established, and the calculated deviation values are compared with the design values, and the deviation data are recorded.

[0093] S220, calculate the weighted deviation coefficient of each measurement point according to the position deviation, the axis deviation of the component and the cross-section size deviation.

[0094] In this embodiment, the weighted deviation coefficient refers to a correction coefficient considering the importance of the measurement point, which is used to adjust the influence degree of different measurement points on the overall evaluation of the component; the measurement points include the key connection node, the axis control point and the cross-section feature point.

[0095] S230, evaluate the matching degree of the component with the design requirement according to the weighted deviation coefficient to obtain the local deviation value of the key part.

[0096] In this embodiment, the matching degree refers to the degree of conformity of the actual state of the component with the design requirement; and the local deviation value refers to the local deformation or position offset of the important part of the component.

[0097] Specifically, an evaluation index system is established, and the weighted deviation coefficient is compared and analyzed with the design requirement. The matching degree of the component with the design requirement is calculated by using a fuzzy comprehensive evaluation method. The key stress parts and deformation sensitive areas are identified, and the local deviation of these parts is analyzed. A deviation classification standard is established to quantitatively evaluate the local deviation value.

[0098] S240, calculate the overall deviation evaluation value of the component according to the local deviation value, and determine the actual deviation value of the component according to the preset installation precision grade.

[0099] In this embodiment, the overall deviation evaluation value refers to a comprehensive index reflecting the overall installation quality of the component; and the installation precision grade refers to the construction precision standard determined according to engineering requirements.

[0100] Specifically, a comprehensive evaluation model is established, the local deviation values are weighted and combined, and the overall deviation evaluation value is calculated. An accuracy level determination table is established, and the accuracy level is divided according to the engineering type, use requirement and construction difficulty. Whether the actual deviation value of the component meets the requirement is determined by table comparison. For different accuracy levels, the corresponding adjustment plan is established.

[0101] In one embodiment, with reference to Figure 3 , the method further comprises the following steps:

[0102] S250, according to the position deviation of the key connection node of the component, the assembly gap value between adjacent components is obtained, and the prestress parameter and the deformation allowable value of the connection part are determined according to the assembly gap value.

[0103] In this embodiment, the assembly gap value refers to the actual distance between the connection parts of adjacent components; the prestress parameter includes the prestress size, the action direction and the application timing; and the deformation allowable value refers to the maximum deformation amount allowed in the installation process of the connection part.

[0104] Specifically, a connection node type database is established, and the assembly requirements of high-strength bolt connection, welding connection and hinged connection are classified and arranged. The actual assembly gap is obtained by using a gap measuring tool, a gap-prestress corresponding table is established, and the prestress parameter required under different gap values is determined. According to the stress characteristics of the node, the deformation allowable value determination standard is formulated, and the connection parts are divided into important connection nodes, secondary connection nodes and general connection points according to the stress degree.

[0105] S260, according to the prestress parameter and the deformation allowable value, a prediction model of the stress deformation of the component is established.

[0106] In this embodiment, the prediction model refers to a calculation model for simulating the mechanical behavior of the component in the installation process; and the stress deformation refers to the stress distribution and deformation state of the component under external force.

[0107] Specifically, a simplified model of the component stress is established, and the complex node is simplified into a spring-damping unit. The piecewise linearization method is used to describe the material constitutive relation, and the stress-strain relationship curve is established. The boundary conditions are determined according to the prestress parameter, and the deformation process of the component is predicted by using the step-by-step loading method.

[0108] S270, according to the prediction model, the stress-strain state of the component in the installation process is analyzed, and the deformation control value of the installation process is obtained.

[0109] In this embodiment, the stress-strain state refers to the stress size and deformation degree of each part of the component; and the deformation control value refers to the deformation limit value that needs to be strictly controlled in the installation process.

[0110] Specifically, a stress-strain monitoring scheme is established, strain gauges are arranged at key positions, and strain data are collected in real time. A deformation control grading table is established, and control levels are divided according to component types and stress characteristics. An interpolation algorithm is used to calculate the stress-strain state of non-monitoring points, and a component overall stress cloud chart is drawn. The deformation control value of each stage is calculated according to a prediction model.

[0111] S280, when the actual deformation exceeds the deformation control value, output adjustment compensation parameters.

[0112] In this embodiment, the adjustment compensation parameters refer to control parameters for correcting installation deviations, including adjustment direction, adjustment amount, and adjustment sequence.

[0113] Specifically, a deformation overrun judgment criterion is established, and a compensation mechanism is started when the actual deformation monitored exceeds the control value. An adjustment parameter mapping table is established, and the corresponding adjustment scheme is determined according to the deformation characteristics.

[0114] In one embodiment, with reference to Figure 4 In step S500, according to the installation guidance parameters, the component parameters in the installation process are monitored in real time, the installation deviation value is obtained, and the adjustment instruction is generated based on the installation deviation value, specifically including the following steps:

[0115] S510, according to the installation guidance parameters, an installation precision monitoring network is established in a regional and hierarchical manner.

[0116] Among them, the regional division includes dividing the steel structure into rigid connection area, hinged connection area and sliding connection area according to the node connection type, and the hierarchical division includes dividing the monitoring points into main load-bearing nodes, secondary load-bearing nodes and general connection points according to the importance of the structure.

[0117] In this embodiment, the installation precision monitoring network refers to a system arrangement scheme for monitoring different regions and different levels of steel structures; the rigid connection area refers to the area where the node is completely fixed, the hinged connection area refers to the area where the node can rotate, and the sliding connection area refers to the area where the node can slide; the main load-bearing node refers to the node that bears the main load transfer, the secondary load-bearing node refers to the node that bears the secondary load, and the general connection point refers to the node that mainly plays a connecting role.

[0118] Specifically, a monitoring zoning scheme is established, and a zoning map is drawn according to the node connection type. A monitoring point grading standard is established, and the monitoring points are classified and marked according to the importance of the load. A monitoring point layout rule is developed, and monitoring equipment is laid out in different regions according to the grading requirements. A monitoring data collection frequency table is established, and corresponding data collection frequencies are set for different regions and levels.

[0119] S520, according to the monitoring network, the spatial position, inclination angle and connection deformation data of the component are collected in real time.

[0120] In this embodiment, the spatial position refers to the coordinate position of the component in three-dimensional space; the inclination angle refers to the angle between the component and the horizontal plane or vertical plane; and the connection deformation data refers to the displacement and change in the angle of the node connection.

[0121] In step S530, the region exceeding the installation allowable deviation is highlighted, and the stress transmission path of the deviation region is analyzed to obtain the stress characteristic parameters of the deviation region, wherein the allowable deviation values of different regions and levels are different.

[0122] In this embodiment, the stress transmission path refers to the main channel of stress transmission within the component; and the stress characteristic parameters refer to key indicators reflecting the stress state of the component, including the stress concentration coefficient, deformation gradient, and internal force distribution.

[0123] Specifically, a regional deviation control table is first established, and allowable deviation values are specified for rigid connection regions, hinged connection regions, and sliding connection regions. For the rigid connection region, the allowable deviation values of the main stress nodes, secondary stress nodes, and general connection points are determined according to the span ratio; for the hinged connection region, the allowable deviation values of the three types of nodes are determined according to the component length ratio; and for the sliding connection region, the allowable deviation values of the three types of nodes are determined according to the displacement. A node type identification table is established to classify nodes according to connection form and stress characteristics, and record the basic parameters of each node. The actual position of the node is measured using a laser tracker, compared with the designed position, and the deviation value is calculated. When the deviation exceeds the allowable value, the region is marked in red on the monitoring interface. A local model is established using finite element analysis software, the measured position deviation is input, and the stress distribution is calculated. The stress contour map is extracted to determine the main path of stress transmission and mark the stress concentration region. The stress concentration coefficient of the key section is calculated, the deformation gradient and internal force distribution are recorded, and the calculation results are compared with the preset safety threshold to evaluate the rationality of the stress state.

[0124] In step S540, adjustment instructions are generated according to the stress characteristic parameters.

[0125] In this embodiment, the adjustment instructions refer to specific operation requirements for correcting the installation deviation, including the adjustment object, adjustment method, and adjustment steps.

[0126] Specifically, an adjustment scheme library is established, and corresponding adjustment schemes are developed for different types of deviations. Adjustment priority determination rules are established to determine the adjustment order based on the stress characteristic parameters.

[0127] In one embodiment, with reference to Figure 5 In step S540, adjustment instructions are generated according to the stress characteristic parameters, specifically including the following steps:

[0128] S541, obtain the stress distribution range and corresponding deformation of the current component, and analyze the actual stress state of the current structure according to the stress distribution range and the deformation.

[0129] In this embodiment, the stress distribution range refers to the stress size distribution interval of each part of the component; the deformation refers to the displacement and rotation angle of the component under the action of stress; and the actual stress state refers to the stress condition of the component under the current working condition.

[0130] S542, calculate the deviation value between the stress characteristic parameter and the actual stress state, and determine the component adjustment scheme according to the deviation value.

[0131] In this embodiment, the deviation value refers to the difference degree between the stress characteristic parameter and the actual stress state; and the component adjustment scheme refers to specific measures for eliminating the deviation, including adjustment position, adjustment direction and adjustment amount.

[0132] Specifically, first, a deviation characteristic classification table is established, and the deviation is classified according to position deviation, angle deviation and deformation deviation. For the position deviation, the distance difference between the measured point coordinates and the theoretical coordinates is calculated; for the angle deviation, the included angle between the measured axis and the designed axis is calculated; and for the deformation deviation, the difference between the measured deformation value and the theoretical deformation value is calculated. The three types of deviations are assigned weight coefficients according to their influence degree on the structure, and the comprehensive deviation value is obtained by using the weighted average method. According to the comprehensive deviation value, the pre-established adjustment scheme database is queried, and appropriate adjustment measures are selected. In the database, the corresponding adjustment position, adjustment direction and adjustment amount are recorded for different deviation ranges, for example, the position deviation is mainly adjusted by the jack displacement, the angle deviation is mainly adjusted by the temporary support, and the deformation deviation is mainly adjusted by the preloading.

[0133] S543, obtain the current installation characteristics of the component, and analyze the influence effect of each adjustment step on the current installation characteristics layer by layer to obtain the adjustment operation sequence.

[0134] In this embodiment, the installation characteristics refer to the current installation state of the component, including the spatial position, connection state and support condition; and the influence effect refers to the change degree of the adjustment operation on the component state.

[0135] Specifically, a component installation state table is established to record the spatial coordinates, support position and connection node stress state of the component. For each adjustment step, the influence matrix method is used to analyze its influence on the component state. For example, the displacement adjustment will affect the connection stress of the adjacent component, the support adjustment will change the stress path of the component, and the preloading adjustment will cause the overall deformation. By calculating the influence coefficient, the adjustment steps are sorted in order of influence degree from small to large to form the adjustment operation sequence. For the adjustment steps with larger influence, a step-by-step implementation method is used, and the component response is observed after each adjustment to ensure the safety of the adjustment process.

[0136] S544, optimizing the original installation procedure of the component according to the adjustment scheme and the adjustment operation sequence, and generating adjustment instructions.

[0137] In this embodiment, the adjustment operation sequence refers to the execution order of specific adjustment steps, and the original installation procedure refers to the standard installation steps in the plan.

[0138] Specifically, the original installation procedure is modified according to the adjustment operation sequence. When adjusting the procedure, factors such as construction equipment arrangement, operation space requirements, and construction personnel allocation should be considered to ensure the implementability of the adjustment measures. The modified procedure is compiled into construction instructions to clearly specify the specific parameters and operation requirements of each adjustment step.

[0139] In one embodiment, the adjustment operation sequence is determined by referring to Figure 6 In step S542, the deviation value between the stress characteristic parameter and the actual stress state is calculated, and the component adjustment scheme is determined according to the deviation value, which specifically includes the following steps:

[0140] S5421, according to the deviation value between the stress characteristic parameter and the actual stress state, estimating the influence degree of the actual stress state on the overall stability of the structure without adjustment processing.

[0141] In this embodiment, the overall stability of the structure refers to the ability of the steel structure system to maintain balance under various load combinations; the influence degree refers to the adverse influence of the stress state deviation on the structure, including local stress concentration, overall deformation increase, and bearing capacity decrease.

[0142] Specifically, a stability evaluation index table is established, and key control indicators including node displacement, component stress ratio, and overall deformation value are set. A rapid evaluation process is developed, and a simplified calculation method is used to estimate the influence degree. For different types of deviations, establish influence degree quantization standards, and divide the influence degree into slight influence, moderate influence, and severe influence. Establish a warning value determination table, and when the influence degree exceeds the warning value, start the adjustment mechanism.

[0143] S5422, obtaining the actual deformation degree of the component under the current stress state.

[0144] S5423, comparing the structure stability influence degree with the actual deformation degree, and calculating the difference between the two.

[0145] S5424, judging whether the current adjustment scheme is reasonable according to the difference value, and predicting the structure performance after adjustment.

[0146] In this embodiment, the difference value refers to the deviation of the influence degree of structural stability and the actual deformation degree, including the node displacement difference value, the component stress difference value and the overall deformation difference value; the comparative analysis refers to the evaluation of the relationship between the two through quantitative indicators, including the difference value, the change trend and the correlation degree.

[0147] Specifically, first, a difference calculation standard table is established, and calculation methods are specified for different types of deviations. For the node displacement difference value, the ratio of the measured node displacement to the theoretical displacement is calculated, and different weights are assigned to the main force nodes, secondary force nodes and general connection points; for the component stress difference value, the ratio of the measured stress to the design stress is calculated, and different weights are assigned to the axial stress, bending stress and shear stress; for the overall deformation difference value, the ratio of the measured deformation of the key control point to the allowable deformation is calculated, and different weights are assigned to the vertical deformation, horizontal deformation and torsional deformation. The three types of difference values are obtained by weighted average method to get the comprehensive difference value, and a grading standard is established, when the comprehensive difference value is less than the control value, it is determined that the adjustment scheme is reasonable. The predicted analysis model is used to evaluate the structural performance after adjustment, the geometric nonlinearity and material nonlinearity of the component are considered in the model, and the stress and strain development law in the adjustment process is obtained by iterative calculation to verify the feasibility of the adjustment scheme. Multiple monitoring points are set to collect real-time structural response data, and when the deviation between the monitoring value and the predicted value exceeds the allowable value, the adjustment scheme is corrected in time to ensure the safety and controllability of the adjustment process.

[0148] S5425、According to the predicted results of the structural performance, adjust the adjustment intensity of each construction step.

[0149] In this embodiment, the structural performance refers to the stress performance and use performance of the adjusted structure; the adjustment intensity refers to the strength of the construction adjustment measures.

[0150] In one embodiment, referring to Figure 7 , in step S544, the original installation process of the component is optimized and adjusted according to the adjustment scheme and the adjustment operation sequence, and corresponding construction process parameters are generated, including the following steps:

[0151] S5441, obtain the deformation characteristics of each connection node under the current construction environment, and calculate the cooperative deformation time of adjacent nodes according to the deformation characteristics and the corresponding adjustment intensity.

[0152] In this embodiment, the deformation characteristics refer to the deformation law and characteristics of the connection node under the action of stress; the cooperative deformation time refers to the time required for adjacent nodes to complete the deformation process together.

[0153] Specifically, a node deformation database is established to record deformation parameters of different types of nodes. A deformation characteristic analysis method is formulated to fit the deformation curve of the node through experimental data. A collaborative deformation calculation model is established to consider the mutual influence between nodes. A time prediction table is established to calculate the deformation synchronization time according to the deformation characteristics and adjustment intensity.

[0154] S5442, according to the collaborative deformation time and the corresponding adjustment operation sequence, the stress transmission ratio of the adjacent nodes is calculated.

[0155] In this embodiment, the stress transmission ratio refers to the internal force distribution relationship transmitted between adjacent nodes; the adjustment operation sequence refers to the specific step sequence of construction adjustment.

[0156] Specifically, a force transmission calculation rule is established, the influence matrix method is used to analyze the force transmission relationship between nodes, and the adjustment priority is determined according to the transmission ratio.

[0157] S5443, according to the stress transmission ratio, the adjustment range corresponding to the adjacent nodes is adjusted, and according to the adjusted adjustment range, the stability coefficient of the adjacent nodes reaching mechanical equilibrium is calculated.

[0158] In this embodiment, the adjustment range refers to the spatial position and deformation limit of node adjustment, including the translation adjustment range, the rotation adjustment range and the vertical adjustment range; the mechanical equilibrium refers to the stress state of the node system when reaching a stable state, including the node internal force balance, the component stress balance and the overall deformation coordination.

[0159] Specifically, first, a node adjustment range table is established, and adjustment limits for different types of nodes are specified. For rigid connection nodes, the translation adjustment range is determined according to the multiples of the node plate thickness, the rotation adjustment range is determined according to the ratio of the bolt hole diameter to the connection plate length, and the vertical adjustment range is determined according to the adjustable thickness of the gasket. For hinged connection nodes, the translation adjustment range is determined according to the gap between the pin shaft and the hole, the rotation adjustment range is determined according to the curvature of the hinged surface, and the vertical adjustment range is determined according to the height of the support. For sliding connection nodes, the translation adjustment range is determined according to the length of the sliding groove, the rotation adjustment range is determined according to the inclination of the sliding surface, and the vertical adjustment range is determined according to the gasket combination. The adjustment range is corrected according to the stress transmission ratio, and the adjustment range of the node with a larger transmission ratio is correspondingly reduced to avoid instability of the structure system caused by the adjustment process. The step loading method is used to verify the stability of the adjusted node, and the node displacement, internal force and deformation value at each step of loading are recorded. When the difference between the adjacent two steps is less than the control value and is stable, it is confirmed that the mechanical equilibrium state is reached. The stability coefficient of the node system is determined by calculating the displacement increment coefficient, the internal force distribution coefficient and the deformation coordination coefficient at the node.

[0160] S5444, according to the stability coefficient, the original installation process of the component is optimized and adjusted to generate an adjustment instruction.

[0161] It should be understood that the size of the serial number of each step in the above embodiment does not mean the order of execution, and the execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the application.

[0162] In a second aspect, the application provides a steel structure installation system based on laser scanning and BIM fusion. The steel structure installation system based on laser scanning and BIM fusion of the application will be described below in combination with the above steel structure installation method based on laser scanning and BIM fusion.

[0163] With reference to Figure 8 A steel structure installation system based on laser scanning and BIM fusion, comprising:

[0164] A three-dimensional point cloud data acquisition module for scanning a steel structure component to obtain three-dimensional point cloud data of the component;

[0165] A component actual deviation value acquisition module for comparing and analyzing the three-dimensional point cloud data with a preset BIM theoretical model to obtain a component actual deviation value;

[0166] A regional space data acquisition module for scanning an installation location of a construction site according to the component actual deviation value to obtain installation regional space data;

[0167] An installation guidance parameter acquisition module for performing virtual pre-assembly in a BIM system according to the three-dimensional point cloud data and the installation regional space data to obtain installation guidance parameters;

[0168] An adjustment instruction generation module for monitoring a component parameter in an installation process in real time according to the installation guidance parameters, obtaining an installation deviation value, and generating an adjustment instruction according to the installation deviation value.

[0169] In one embodiment, the application provides an electronic device, which can be a server, and the internal structure diagram thereof can be as shown in Figure 9 The electronic device includes a processor, a memory and a network interface connected through a system bus. The processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The database of the electronic device is used to store data. The network interface of the electronic device is used to communicate with external terminals through network connection. The computer program is executed by the processor to implement a steel structure installation method based on laser scanning and BIM fusion.

[0170] Those skilled in the art can understand that Figure 9The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the electronic device to which the scheme of the present application is applied. The specific electronic device can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0171] In one embodiment, an electronic device is also provided, including a memory and a processor, the memory storing a computer program, and the processor implementing the steps in the above-mentioned method embodiments when executing the computer program.

[0172] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing relevant hardware. The above-mentioned computer program can be stored in a non-volatile computer readable storage medium and, when executed, can include the processes of the above-mentioned embodiments. Any reference to memory, storage, database or other medium used in the embodiments provided by the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not as a limitation, RAM can be in various forms such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0173] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A steel structure installation method based on laser scanning and BIM fusion, characterized by, The method comprises the following steps: scanning a steel structural member to obtain three-dimensional point cloud data of the member; comparing the three-dimensional point cloud data with a preset BIM theoretical model to obtain an actual deviation value of the member; scanning an installation position on a construction site according to the actual deviation value of the member to obtain spatial data of an installation area; performing virtual pre-assembly in a BIM system according to the three-dimensional point cloud data and the spatial data of the installation area to obtain installation guidance parameters; monitoring member parameters in an installation process in real time according to the installation guidance parameters to obtain an installation deviation value, and generating an adjustment instruction according to the installation deviation value; wherein monitoring member parameters in an installation process in real time according to the installation guidance parameters to obtain an installation deviation value, and generating an adjustment instruction based on the installation deviation value, specifically comprises the following steps: establishing a regional and hierarchical installation precision monitoring network according to the installation guidance parameters, wherein the regions include dividing the steel structure into rigid connection areas, hinged connection areas and sliding connection areas according to the types of node connections, and the hierarchies include dividing monitoring points into primary load-bearing nodes, secondary load-bearing nodes and general connection points according to the importance of the structure; collecting spatial position, inclination angle and connection deformation data of the member in real time according to the monitoring network; highlighting areas that exceed the allowed deviation of installation, and analyzing the stress transmission path of the deviation area to obtain the stress characteristic parameters of the deviation area, wherein the allowed deviation values of different areas and hierarchies are different; obtaining the stress distribution range and the corresponding deformation of the current member, and analyzing the actual stress state of the current structure according to the stress distribution range and the deformation; calculating the deviation value between the stress characteristic parameters and the actual stress state, and determining the member adjustment scheme according to the deviation value; obtaining the current installation characteristics of the member, and layer-by-layer analyzing the influence effect of each adjustment step on the current installation characteristics to obtain an adjustment operation sequence; optimizing and adjusting the original installation process of the member according to the adjustment scheme and the adjustment operation sequence to generate an adjustment instruction.

2. The laser scanning and BIM fusion-based steel structure installation method according to claim 1, characterized in that, comparing the three-dimensional point cloud data with a preset BIM theoretical model to obtain an actual deviation value of the member, specifically comprising the following steps: calculating the position deviation of the key connection nodes of the member, the axis deviation of the member and the cross-sectional size deviation according to the three-dimensional point cloud data and the preset BIM theoretical model; calculating the weighted deviation coefficient of each measurement point according to the position deviation, the axis deviation of the member and the cross-sectional size deviation; evaluating the matching degree of the member with the design requirements according to the weighted deviation coefficient to obtain the local deviation value of the key parts; calculating the overall deviation evaluation value of the member according to the local deviation value, and determining the actual deviation value of the member according to the preset installation precision level.

3. The laser scanning and BIM fusion-based steel structure installation method according to claim 2, characterized in that, The method further comprises the following steps: obtaining the assembly gap value between adjacent members according to the position deviation of the key connection nodes of the member, and determining the prestress parameter and the deformation allowable value of the connection part according to the assembly gap value; establishing a prediction model of the stress deformation of the member according to the prestress parameter and the deformation allowable value; According to the prediction model, the stress and strain state of the component during installation is analyzed to obtain a deformation control value of the installation process; When the actual deformation exceeds the deformation control value, an adjustment compensation parameter is output. 4.The steel structure installation method based on fusion of laser scanning and BIM according to claim 1, wherein, A deviation value between the stress characteristic parameter and the actual stress state is calculated, and a component adjustment scheme is determined according to the deviation value, specifically including the following steps: According to the deviation value between the stress characteristic parameter and the actual stress state, the influence degree of the actual stress state on the overall stability of the structure without adjustment processing is estimated; An actual deformation degree of the component under the current stress state is obtained; The structure stability influence degree and the actual deformation degree are compared, and a difference value between the two is calculated; According to the difference value, it is judged whether the current adjustment scheme is reasonable, and the structure performance after adjustment is predicted; According to the prediction result of the structure performance, the adjustment intensity of each construction step is adjusted. 5.The steel structure installation method based on fusion of laser scanning and BIM according to claim 1, wherein, According to the adjustment scheme and the adjustment operation sequence, the original installation process of the component is optimized and adjusted to generate corresponding construction process parameters, specifically including the following steps: Obtain the deformation characteristics of each connection node under the current construction environment, and calculate the cooperative deformation time of adjacent nodes according to the deformation characteristics and the corresponding adjustment intensity; According to the cooperative deformation time and the corresponding adjustment operation sequence, the stress transmission ratio of the adjacent nodes is calculated; According to the stress transmission ratio, the adjustment range corresponding to the adjacent nodes is adjusted, and the stability coefficient of the adjacent nodes reaching mechanical equilibrium is calculated according to the adjusted adjustment range; According to the stability coefficient, the original installation process of the component is optimized and adjusted to generate adjustment instructions. 6.A steel structure installation system based on laser scanning and BIM fusion, characterized by, The steel structure installation method based on laser scanning and BIM fusion of any one of claims 1-5, comprising: A three-dimensional point cloud data acquisition module for scanning steel structure components to obtain three-dimensional point cloud data of the components; A component actual deviation value acquisition module for comparing and analyzing the three-dimensional point cloud data with a preset BIM theoretical model to obtain a component actual deviation value; A regional space data acquisition module for scanning the installation location of the construction site according to the component actual deviation value to obtain installation region space data; An installation guidance parameter acquisition module for performing virtual pre-assembly in a BIM system according to the three-dimensional point cloud data and the installation region space data to obtain installation guidance parameters; An adjustment instruction generation module for monitoring the component parameters in the installation process in real time according to the installation guidance parameters, obtaining an installation deviation value, and generating adjustment instructions according to the installation deviation value.

7. An electronic device, comprising: A computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to realize the steps of the steel structure installation method based on laser scanning and BIM fusion of any one of claims 1-5. A computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to realize the steps of the steel structure installation method based on laser scanning and BIM fusion of any one of claims 1-5.

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