Calculation method for accurate distribution of fully bolted connections between cross steel columns and main steel beams

Abstract

The present invention discloses a calculation method for the precise distribution of all-bolt connections between cross steel columns and main steel beam nodes, and relates to the technical field of all-bolt connection distribution, in order to solve the problem that the precise distribution of bolts cannot be accurately obtained when the cross steel column and the main steel beam are connected by bolts. The present invention simulates the gradual increase of loads during actual use through a progressively loaded destructive test, so that the test results are closer to the actual situation, and adopts nonlinear analysis to simulate the behavior of high-strength bolts and connecting plates under the limit state, taking into account the nonlinear characteristics of the material, so that the analysis results are more accurate. The application of the BIM model enables the installation position of each high-strength bolt to be accurately imported according to the node position of the on-site construction three-dimensional model, further enhancing the accuracy of the installation position, and by simulating the preload, contact behavior, and slippage and deformation of the high-strength bolts when subjected to force, the connection performance and reliability can be more intuitively evaluated.

Description

Technical Field

[0001] The present invention relates to the technical field of full bolt connection distribution, and in particular to a method for calculating the precise distribution of full bolt connections at nodes between cross steel columns and main steel beams. Background Art

[0002] Full bolt connection distribution usually refers to a method of using bolts as connecting elements in steel structure connections to connect various components through bolt fastening.

[0003] The patent application with publication number CN107268853A discloses a fully bolted assembled steel skeleton light panel and its manufacturing method, which mainly arranges a stiffening plate in the middle of adjacent bolt holes on the connecting plate, and the two ends of the stiffening plate are welded to the connecting plate and the end ribs respectively, and the gaps between adjacent fully bolted assembled steel skeleton light panels are filled with concrete on site, thereby improving the integrity of the structure and avoiding local buckling of the connecting plate during use. When the connecting plate is thick and the bolt spacing is small, it is easy to cause material waste. When the connecting plate is too thin and the bolt spacing is too large, the bearing capacity of the structure is low and the safety is poor. The present invention provides a manufacturing method for a fully bolted assembled steel skeleton light panel, which selects the appropriate component size through calculation, which not only ensures the safety of the structure but also avoids material waste. Although the above scheme solves the problem of bolt installation, the following problems still exist in actual operation:

[0004] 1. The node position and stress conditions of the material are not analyzed according to the basic data of the material, resulting in inaccurate bolt distribution.

[0005] 2. Failure to perform more careful simulation installation between each bolt and connector resulted in poor connection between the bolts and connectors during direct construction.

[0006] 3. Failure to subject each bolt connection to a more robust limit test, resulting in a failure to minimize risk. Summary of the invention

[0007] The purpose of the present invention is to provide a calculation method for the precise distribution of the full bolt connection between the cross steel column and the main steel beam node. The gradual increase of load in the actual use process is simulated through the progressive loading destructive test, so that the test result is closer to the actual situation, and the scientificity and accuracy of the test are improved. Nonlinear analysis is used to simulate the behavior of high-strength bolts and connecting plates under the limit state, and the nonlinear characteristics of the material are taken into account, so that the analysis result is more accurate. The application of the BIM model enables the installation position of each high-strength bolt to be accurately imported according to the node position of the on-site construction three-dimensional model, further enhancing the accuracy of the installation position. By simulating the preload, contact behavior, and slip and deformation of the high-strength bolts when subjected to force, the connection performance and reliability can be more intuitively evaluated, and the problems in the prior art can be solved.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] The calculation method of the accurate distribution of the full bolt connection between the cross steel column and the main steel beam node includes the following steps:

[0010] S1: Material data collection: Obtain basic data of installation materials from the database, and uniquely encode and label each type of material and basic data of the material, and obtain target material data after unique encoding and labeling;

[0011] S2: Force node analysis: confirm the node position according to the target material data, and then analyze the force data according to each node position. After the force data analysis, the target force node data is obtained;

[0012] S3: Bolt connection simulation: construct a bolt installation model according to the target stress node data, use the BIM model to simulate the bolt connection of the bolt installation model, and obtain a simulated connection model after the bolt connection simulation;

[0013] S4: Simulation data decision: The simulated connection model is subjected to a destructive test, and the qualification rate of the simulated connection model is determined according to the destructive test results. The installation plan is formulated and adjusted according to the qualification rate, and the standard connection distribution data is obtained after the installation plan is formulated and adjusted;

[0014] S5: On-site installation effect evaluation: Carry out construction on the construction site according to the standard connection distribution data, record data according to the final construction situation, compare the on-site data records with the standard connection distribution data, and determine the on-site qualification rate of the standard connection distribution data based on the comparison results.

[0015] Preferably, in S1, basic data of the installation materials are obtained from the database, and each type of material and basic data of the material are uniquely coded and labeled, including:

[0016] First, retrieve the installation materials from the database, including cross-shaped steel column, main steel beam, connection plate and high-strength bolts;

[0017] Confirm the basic data of each installation material, among which the basic data of the cross-shaped steel column includes size, cross-sectional area, weight and material; the basic data of the main steel beam includes section type, size, bending strength, shear strength, section resistance moment, section inertia moment and elastic modulus; the basic data of the connecting plate includes size, hole diameter, hole spacing and material; the basic data of the high-strength bolt includes model, performance grade, pre-tension and friction coefficient.

[0018] Preferably, with respect to obtaining basic data of the installation materials from the database in S1, and uniquely coding each type of material and the basic data of the material, the method further includes:

[0019] Uniquely code and label the materials and their basic data;

[0020] First confirm the coding elements, which include prefix, sequence number, timestamp and suffix;

[0021] The prefix is ​​the type of material, the serial number is a number that increases in sequence, the timestamp is the time when the material is saved in the database, and the suffix is ​​the production batch of the material;

[0022] The material and the basic data of the material are uniquely coded and generated according to the coding elements, and after the generation, a unique coding number of the material and the basic data of the material is obtained.

[0023] Preferably, the node positions are confirmed according to the target material data in S2, and then the force data analysis is performed according to each node position, including:

[0024] Confirm the position of the stress node based on the cross-shaped steel column, main steel beam, connection plate and high-strength bolts;

[0025] Obtain on-site construction drawings from the database and use the structural 3D model to construct the on-site construction 3D model;

[0026] Import load data into the constructed on-site construction 3D model, including dead load, live load and wind load;

[0027] After the load data is imported into the on-site construction 3D model, load analysis is performed. After the load analysis, the structural internal forces of the on-site construction 3D model are obtained. The structural internal forces include bending moment, shear force and axial force.

[0028] Identify the node positions in the on-site construction three-dimensional model whose force values ​​are within a preset range based on the structural internal forces;

[0029] The connection characteristics are analyzed based on the material properties of the cross-shaped steel column, main steel beam, connection plate and high-strength bolts, where the material properties are the yield strength, elastic modulus and Poisson's ratio of the material; the connection characteristics are the pre-tension and friction coefficient of the material analyzed based on the material properties;

[0030] According to the connection characteristics of the materials, the specific node position of each material in the on-site construction 3D model is confirmed, and finally the target stress node data is obtained.

[0031] Preferably, in S3, the bolt installation model is constructed according to the target stress node data, and the bolt connection simulation is performed on the bolt installation model using the BIM model, including:

[0032] Create a family file of high-strength bolts based on the target stress node data. The family file includes bolts, nuts and washers.

[0033] Import the family file of high-strength bolts according to the node position of the on-site construction three-dimensional model in the target stress node data, and obtain the installation model of each high-strength bolt in the on-site construction three-dimensional model after importing;

[0034] Use the BIM model to confirm the installation position of each high-strength bolt in the installation model and confirm the connection type of the high-strength bolt, where the connection type includes rigid connection and hinged connection;

[0035] Use the BIM model to simulate the connection between high-strength bolts and cross-shaped steel columns, main steel beams and connection plates;

[0036] The simulated connection includes simulating the preload of the high-strength bolt, the contact behavior between the bolt head, nut and connection plate, and the slip and deformation of the high-strength bolt when subjected to stress;

[0037] Finally, the simulated connection data is obtained.

[0038] Preferably, in S4, a destructive test is performed on the simulated connection model, a qualified rate of the simulated connection model is determined according to the destructive test result, and an installation plan is formulated and adjusted according to the qualified rate, including:

[0039] Before the simulated connection model is subjected to a destructive test, the load parameters and application methods in the destructive test are determined, wherein a stepwise loading method is used to simulate the gradual increase of the actual load;

[0040] After the load parameters and application methods are confirmed, the simulated connection model will be subjected to nonlinear analysis. The nonlinear analysis simulates the behavior of high-strength bolts and connection plates under the limit state.

[0041] At the same time, the parameter data of stress, strain and displacement of high-strength bolts are monitored during the simulation;

[0042] The failure mode of the high-strength bolt connection is obtained according to the nonlinear analysis results, wherein the failure mode includes shear failure, tensile failure and fatigue failure, and the failure load is confirmed according to the failure mode.

[0043] Preferably, in S4, the simulated connection model is subjected to a destructive test, the qualified rate of the simulated connection model is determined according to the destructive test result, and the installation plan is formulated and adjusted according to the qualified rate, and the method further includes:

[0044] Obtain the destructive test result of the simulated connection model according to the destructive load, and compare the destructive test result with the preset standard result;

[0045] If the number of damaged bolts is within the preset standard range when comparing the results, the simulated connection model is qualified;

[0046] If the number of damaged bolts is not within the preset standard range during the result comparison, the simulated connection model is a non-qualified standard, and the non-qualified standard is subjected to abnormal analysis, which is to analyze the bearing capacity and connection method of the high-strength bolts. After the abnormal analysis is completed, the destructive test is re-performed until the destructive test result meets the qualified standard;

[0047] Formulate a plan based on the comparison of the results of the qualified standards, including the number of high-strength bolts, connection method, connection strength and distribution position;

[0048] Finally, standard connection distribution data is obtained.

[0049] Preferably, the simulated connection model is subjected to a destructive test, including:

[0050] Extract the load type corresponding to the destructive test, where the load type includes pressure, tension, bending moment and shear force;

[0051] Extracting parameter information of the material corresponding to the test position point in the simulated connection model; wherein the parameter information includes the elastic modulus of the material, the yield strength of the material and the cross-sectional area of ​​the position point;

[0052] Retrieving simulated environmental parameters corresponding to the test location points in the simulated connection model; wherein the simulated environmental parameters include environmental temperature data and environmental humidity data;

[0053] The initial loading force is obtained by using the yield strength of the material and the cross-sectional area of ​​the location point in combination with the ambient temperature data and the ambient humidity data; wherein the initial loading force is obtained by the following formula:

[0054] ;

[0055] Wherein, F0 represents the initial loading force; S represents the cross-sectional area of ​​the position point; f represents the yield strength of the material; α represents the expected failure form coefficient; k represents the temperature influence weight coefficient corresponding to the material; w represents the humidity influence weight coefficient corresponding to the material; T and W represent the ambient temperature data and ambient humidity data corresponding to the simulated environment of the current test; T b and W b Indicates the theoretical ideal ambient temperature and humidity values ​​corresponding to the material;

[0056] After the initial loading force is set, setting the force adding rate and the duration of each force adding;

[0057] A destructive test is performed on the test position points in the simulated connection model according to the initial loading force, the force rate and the force duration of each force application.

[0058] Preferably, after the initial loading force is set, setting the force rate includes:

[0059] After the initial loading force is set, extracting ambient temperature data and ambient humidity data;

[0060] The environmental impact coefficient is obtained by using the environmental temperature data and the environmental humidity data; wherein the environmental impact coefficient is obtained by the following formula:

[0061] ;

[0062] Wherein, λ represents the environmental influence coefficient; k represents the temperature influence weight coefficient corresponding to the material; w represents the humidity influence weight coefficient corresponding to the material; T and W represent the ambient temperature data and ambient humidity data corresponding to the simulated environment corresponding to the current test; T b and W b Indicates the theoretical ideal ambient temperature and humidity values ​​corresponding to the material;

[0063] Extract the maximum allowed test duration corresponding to the destructive test;

[0064] The time impact coefficient is obtained by using the maximum allowed test duration; wherein the time impact coefficient is obtained by the following formula:

[0065] ;

[0066] Among them, g represents the time influence coefficient; p represents the fatigue influence coefficient corresponding to the material; r represents the preset attenuation constant coefficient; t represents the maximum allowable test time corresponding to the destructive test, and e represents the exponential bottom;

[0067] The force adding rate is obtained by using the environmental influence coefficient and the time influence coefficient, and the force adding rate is obtained by the following formula:

[0068] ;

[0069] Among them, R represents the force rate; E represents the elastic modulus of the material; S represents the cross-sectional area of ​​the location point; g represents the time influence coefficient; λ represents the environmental influence coefficient.

[0070] Preferably, after the initial loading force is set, the duration of each force application is set, including:

[0071] Extract afterburner rate and environmental impact factor;

[0072] Extraction time influence coefficient;

[0073] The coefficient factor is obtained by using the difference between the environmental impact coefficient and the time impact coefficient; wherein the coefficient factor is obtained by the following formula:

[0074] ;

[0075] Among them, X represents the coefficient factor; g represents the time influence coefficient; λ represents the environmental influence coefficient;

[0076] The coefficient factor is combined with the force adding rate to obtain the force adding duration of each force adding, wherein the force adding duration of each force adding is obtained by the following formula:

[0077] ;

[0078] Among them, ΔT represents the duration of each force addition; R represents the force addition rate; X represents the coefficient factor; g represents the time influence coefficient; C y Indicates the duration of the test that has been ongoing; t indicates the maximum allowable test duration corresponding to the destructive test.

[0079] Preferably, for S5, the construction site is constructed according to the standard connection distribution data, and data is recorded according to the final construction situation, and the data records on site are compared with the standard connection distribution data, and the on-site qualification rate of the standard connection distribution data is determined according to the comparison results, including:

[0080] Print and distribute the data parameters and distribution drawings in the standard connection distribution data;

[0081] Construction personnel carry out on-site construction according to data parameters and distribution drawings;

[0082] At the same time, the construction personnel recorded the on-site construction data, including the number, connection method, connection strength and distribution location of high-strength bolts;

[0083] The on-site construction data is compared with the standard connection distribution data, and the on-site qualification rate of the standard connection distribution data applied to the construction site is determined based on the comparison results. The on-site qualification rate is divided into primary, secondary and tertiary scores.

[0084] Compared with the prior art, the present invention has the following beneficial effects:

[0085] 1. The calculation method for the precise distribution of the full bolt connection between the cross steel column and the main steel beam node provided by the present invention can more accurately simulate the actual situation of the construction site by converting the construction drawings into a three-dimensional model and analyzing it in combination with the real load data, thereby improving the accuracy of the position identification of the stress node. By acquiring and analyzing the stress node data, it can guide the optimization of engineering design and construction plans and reduce safety hazards caused by unreasonable design or improper construction.

[0086] 2. The present invention provides a method for calculating the precise distribution of full bolt connections between cross steel columns and main steel beam nodes. The application of the BIM model enables the installation position of each high-strength bolt to be accurately imported according to the node position of the on-site construction three-dimensional model, further enhancing the accuracy of the installation position. By simulating the preload force, contact behavior, and slippage and deformation of high-strength bolts under stress, the connection performance and reliability can be more intuitively evaluated. By simulating the connection in the BIM model, the strength and stability of the connection can be pre-evaluated, thereby reducing safety risks caused by connection problems.

[0087] 3. The calculation method for the precise distribution of the full bolt connection between the cross steel column and the main steel beam node provided by the present invention simulates the gradual increase of load during actual use through a progressive loading destructive test, so that the test results are closer to the actual situation, and the scientificity and accuracy of the test are improved. Nonlinear analysis is used to simulate the behavior of high-strength bolts and connecting plates under the limit state, and the nonlinear characteristics of the material are taken into account, so that the analysis results are more accurate. Through this precise distribution calculation method, the design of the bolt connection can be optimized, material waste can be reduced, and the connection efficiency and safety can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] Figure 1 It is a schematic diagram of the distribution steps of the full bolt connection between the cross steel column and the main steel beam node of the present invention;

[0089] Figure 2 It is a schematic diagram of the distribution process of the full bolt connection between the cross steel column and the main steel beam node of the present invention. DETAILED DESCRIPTION

[0090] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0091] In order to solve the problem that the existing technology does not analyze the node position and stress conditions of the material according to the basic data of the material, resulting in inaccurate bolt distribution, please refer to Figure 1and Figure 2 , this embodiment provides the following technical solutions:

[0092] The calculation method of the accurate distribution of the full bolt connection between the cross steel column and the main steel beam node includes the following steps:

[0093] S1: Material data collection: Obtain basic data of installation materials from the database, and uniquely encode and label each type of material and basic data of the material, and obtain target material data after unique encoding and labeling;

[0094] Among them, uniquely coding and labeling each type of material and its basic data can ensure the standardization, efficiency and accuracy of material management, thereby improving the management level and efficiency of the entire engineering project;

[0095] S2: Force node analysis: confirm the node position according to the target material data, and then analyze the force data according to each node position. After the force data analysis, the target force node data is obtained;

[0096] Among them, the acquisition and analysis of stress node data can guide the optimization of engineering design and construction plans;

[0097] S3: Bolt connection simulation: construct a bolt installation model according to the target stress node data, use the BIM model to simulate the bolt connection of the bolt installation model, and obtain a simulated connection model after the bolt connection simulation;

[0098] Among them, by simulating connections in the BIM model, the strength and stability of the connection can be evaluated in advance, thereby reducing safety risks caused by connection problems;

[0099] S4: Simulation data decision: The simulated connection model is subjected to a destructive test, and the qualification rate of the simulated connection model is determined according to the destructive test results. The installation plan is formulated and adjusted according to the qualification rate, and the standard connection distribution data is obtained after the installation plan is formulated and adjusted;

[0100] Among them, this precise distribution calculation method can optimize the design of bolted connections, reduce material waste, and improve connection efficiency and safety;

[0101] S5: On-site installation effect evaluation: The construction site is constructed according to the standard connection distribution data, and data is recorded according to the final construction situation. The data records on site are compared with the standard connection distribution data, and the on-site qualification rate of the standard connection distribution data is determined according to the comparison results;

[0102] Among them, by comparing on-site construction data with standard connection distribution data in real time, problems or deviations in construction can be quickly discovered and timely adjustments can be made accordingly, thus ensuring construction quality and progress.

[0103] In S1, the basic data of the installation materials are obtained from the database, and each type of material and the basic data of the material are uniquely coded and labeled, including:

[0104] First, retrieve the installation materials from the database, including cross-shaped steel column, main steel beam, connection plate and high-strength bolts;

[0105] Confirm the basic data of each installation material, among which the basic data of the cross-shaped steel column includes size, cross-sectional area, weight and material; the basic data of the main steel beam includes section type, size, bending strength, shear strength, section resistance moment, section inertia moment and elastic modulus; the basic data of the connecting plate includes size, hole diameter, hole spacing and material; the basic data of the high-strength bolt includes model, performance grade, pre-tension and friction coefficient.

[0106] Uniquely code and label the materials and their basic data;

[0107] First confirm the coding elements, which include prefix, sequence number, timestamp and suffix;

[0108] The prefix is ​​the type of material, the serial number is a number that increases in sequence, the timestamp is the time when the material is saved in the database, and the suffix is ​​the production batch of the material;

[0109] The material and the basic data of the material are uniquely coded and generated according to the coding elements, and after the generation, a unique coding number of the material and the basic data of the material is obtained.

[0110] Specifically, by combining coding elements such as prefix (material type), serial number (sequentially increasing), timestamp (save time) and suffix (production batch), it is ensured that the coding number of each material and its basic data is unique. This uniqueness avoids data confusion and errors and improves data accuracy. The prefix directly identifies the type of material (such as cross-shaped steel column, main steel beam, etc.), making it possible to quickly identify and classify in large amounts of data. This is very beneficial for inventory management, procurement planning and construction progress tracking. The unified coding rules make data easier to be processed and analyzed by computer systems, facilitating the automation of inventory management, automatic generation of purchase orders and automation of data analysis. Through unique coding, specific materials and their detailed information can be quickly located, reducing the workload of manual query and verification, and improving management efficiency. At the same time, it also simplifies the process of data exchange and sharing.

[0111] In S2, the node position is confirmed according to the target material data, and then the force data analysis is performed according to each node position, including:

[0112] Confirm the position of the stress node based on the cross-shaped steel column, main steel beam, connection plate and high-strength bolts;

[0113] Obtain on-site construction drawings from the database and use the structural 3D model to construct the on-site construction 3D model;

[0114] Import load data into the constructed on-site construction 3D model, including dead load, live load and wind load;

[0115] After the load data is imported into the on-site construction 3D model, load analysis is performed. After the load analysis, the structural internal forces of the on-site construction 3D model are obtained. The structural internal forces include bending moment, shear force and axial force.

[0116] Identify the node positions in the on-site construction three-dimensional model whose force values ​​are within a preset range based on the structural internal forces;

[0117] The connection characteristics are analyzed based on the material properties of the cross-shaped steel column, main steel beam, connection plate and high-strength bolts, where the material properties are the yield strength, elastic modulus and Poisson's ratio of the material; the connection characteristics are the pre-tension and friction coefficient of the material analyzed based on the material properties;

[0118] According to the connection characteristics of the materials, the specific node position of each material in the on-site construction 3D model is confirmed, and finally the target stress node data is obtained.

[0119] Specifically, by converting construction drawings into three-dimensional models and analyzing them in combination with real load data, the actual situation on the construction site can be simulated more accurately, thereby improving the accuracy of identifying the position of stress nodes. The combined effects of multiple loads (constant load, live load, wind load) are taken into account, making the stress analysis more comprehensive and closer to reality. The construction of the three-dimensional model visualizes the entire construction process and stress conditions, which is convenient for engineers to intuitively understand and discover potential problems. It intuitively displays the distribution of structural internal forces (bending moment, shear force, axial force), helps to quickly identify key stress points and possible weak links, and conducts comprehensive analysis based on material properties (yield strength, elastic modulus, Poisson's ratio) and connection characteristics (pre-tension, friction coefficient), ensuring the scientificity and systematicness of the stress analysis. Through the acquisition and analysis of stress node data, it can guide the optimization of engineering design and construction plans and reduce safety hazards caused by unreasonable design or improper construction.

[0120] In order to solve the problem that the existing technology does not perform a more careful simulation installation between each bolt and the connecting piece, resulting in poor connection between the bolt and the connecting piece during direct construction, please refer to Figure 1 and Figure 2 , this embodiment provides the following technical solutions:

[0121] The bolt installation model is constructed according to the target stress node data in S3, and the bolt installation model is simulated by bolt connection using the BIM model, including:

[0122] Create a family file of high-strength bolts based on the target stress node data. The family file includes bolts, nuts and washers.

[0123] Import the family file of high-strength bolts according to the node position of the on-site construction three-dimensional model in the target stress node data, and obtain the installation model of each high-strength bolt in the on-site construction three-dimensional model after importing;

[0124] Use the BIM model to confirm the installation position of each high-strength bolt in the installation model and confirm the connection type of the high-strength bolt, where the connection type includes rigid connection and hinged connection;

[0125] Use the BIM model to simulate the connection between high-strength bolts and cross-shaped steel columns, main steel beams and connection plates;

[0126] The simulated connection includes simulating the preload of the high-strength bolt, the contact behavior between the bolt head, nut and connection plate, and the slip and deformation of the high-strength bolt when subjected to stress;

[0127] Finally, the simulated connection data is obtained.

[0128] Specifically, the bolt family file (including bolts, nuts, washers) created based on the target stress node data ensures the precise size and specifications of the bolts and their accessories, thereby improving the accuracy of bolt installation. The application of the BIM model enables the installation position of each high-strength bolt to be accurately imported according to the node position of the on-site construction three-dimensional model, further enhancing the accuracy of the installation position. By simulating the preload, contact behavior, and slip and deformation of high-strength bolts under stress, the connection performance and reliability can be evaluated more intuitively. The simulated connection process takes into account a variety of actual working conditions, such as the application of preload, the contact behavior between the bolt and the connecting plate, and the mechanical response under stress, which makes the simulation results closer to the actual situation. According to the simulated connection data, the installation layout of the bolts, the preload setting, etc. can be optimized to improve the overall stress performance and stability of the node. By simulating the connection in the BIM model, the strength and stability of the connection can be pre-evaluated, thereby reducing the safety risks caused by connection problems. Every step of the operation and data in the BIM model can be recorded and traced, providing important data support for subsequent maintenance, renovation and expansion.

[0129] In order to solve the problem that the existing technology does not subject each bolt connection to a more powerful limit test, thus failing to minimize the risk, please refer to Figure 1 and Figure 2, this embodiment provides the following technical solutions:

[0130] The simulated connection model in S4 will be subjected to a destructive test, and the qualified rate of the simulated connection model will be determined according to the destructive test results. The installation plan will be formulated and adjusted according to the qualified rate, including:

[0131] Before the simulated connection model is subjected to a destructive test, the load parameters and application methods in the destructive test are determined, wherein a stepwise loading method is used to simulate the gradual increase of the actual load;

[0132] After the load parameters and application methods are confirmed, the simulated connection model will be subjected to nonlinear analysis. The nonlinear analysis simulates the behavior of high-strength bolts and connection plates under the limit state.

[0133] At the same time, the parameter data of stress, strain and displacement of high-strength bolts are monitored during the simulation;

[0134] The failure mode of the high-strength bolt connection is obtained according to the nonlinear analysis results, wherein the failure mode includes shear failure, tensile failure and fatigue failure, and the failure load is confirmed according to the failure mode.

[0135] Obtain the destructive test result of the simulated connection model according to the destructive load, and compare the destructive test result with the preset standard result;

[0136] If the number of damaged bolts is within the preset standard range when comparing the results, the simulated connection model is qualified;

[0137] If the number of damaged bolts is not within the preset standard range during the result comparison, the simulated connection model is a non-qualified standard, and the non-qualified standard is subjected to abnormal analysis, which is to analyze the bearing capacity and connection method of the high-strength bolts. After the abnormal analysis is completed, the destructive test is re-performed until the destructive test result meets the qualified standard;

[0138] Formulate a plan based on the comparison of the results of the qualified standards, including the number of high-strength bolts, connection method, connection strength and distribution position;

[0139] Finally, standard connection distribution data is obtained.

[0140] Specifically, through the destructive test with gradual loading, the gradual increase of load in actual use is simulated, making the test results closer to the actual situation and improving the scientificity and accuracy of the test. Nonlinear analysis is used to simulate the behavior of high-strength bolts and connecting plates under the limit state, and the nonlinear characteristics of the material are considered to make the analysis results more accurate. During the test, multiple parameters such as stress, strain, and displacement of high-strength bolts are monitored. The comprehensive analysis of these parameters can more comprehensively reflect the performance and connection status of the bolts, identify multiple failure modes (shear failure, tensile failure, fatigue failure), and confirm the failure load accordingly. This detailed classification helps to deeply understand the mechanism of connection failure, establishes a comparison mechanism between the destructive test results and the preset standards, and can promptly discover the problems of the simulated connection model to ensure that only qualified models can be used for subsequent installation plan formulation. For unqualified simulated connection models, the root cause of the problem is found through abnormal analysis, and the destructive test is re-performed until the result is qualified. This feedback and adjustment mechanism ensures the reliability of the final plan. Through this precise distribution calculation method, the design of bolted connections can be optimized, material waste can be reduced, and connection efficiency and safety can be improved.

[0141] Specifically, the simulated connection model is subjected to destructive testing, including:

[0142] Extract the load type corresponding to the destructive test, where the load type includes pressure, tension, bending moment and shear force;

[0143] Extracting parameter information of the material corresponding to the test position point in the simulated connection model; wherein the parameter information includes the elastic modulus of the material, the yield strength of the material and the cross-sectional area of ​​the position point;

[0144] Retrieving simulated environmental parameters corresponding to the test location points in the simulated connection model; wherein the simulated environmental parameters include environmental temperature data and environmental humidity data;

[0145] The initial loading force is obtained by using the yield strength of the material and the cross-sectional area of ​​the location point in combination with the ambient temperature data and the ambient humidity data; wherein the initial loading force is obtained by the following formula:

[0146] ;

[0147] Wherein, F0 represents the initial loading force; S represents the cross-sectional area of ​​the position point; f represents the yield strength of the material; α represents the expected failure form coefficient; k represents the temperature influence weight coefficient corresponding to the material; w represents the humidity influence weight coefficient corresponding to the material; T and W represent the ambient temperature data and ambient humidity data corresponding to the simulated environment of the current test; T b and W b Indicates the theoretical ideal ambient temperature and humidity values ​​corresponding to the material;

[0148] After the initial loading force is set, setting the force adding rate and the duration of each force adding;

[0149] A destructive test is performed on the test position points in the simulated connection model according to the initial loading force, the force rate and the force duration of each force application.

[0150] The technical effect of the above technical solution is: by clearly extracting the load types (pressure, tension, bending moment and shear force) corresponding to the destructive test, it is possible to more comprehensively simulate various destructive conditions that may be encountered in actual use, thereby improving the accuracy and comprehensiveness of the test. Extracting the material parameter information (elastic modulus, yield strength and cross-sectional area) corresponding to the test position points in the simulated connection model enables the destructive test to be performed based on the actual physical properties of the material, thereby enhancing the reliability and authenticity of the test results.

[0151] Retrieving simulated environmental parameters (ambient temperature and humidity) and taking these factors into account when calculating the initial loading force makes the test closer to the environmental conditions in the actual application scenario, improving the practicality and accuracy of the test results. The initial loading force is calculated by formula, and the force rate and force duration are set to ensure the scientificity and controllability of the destruction test process. This strategy helps to more accurately observe and analyze the behavior of materials during the destruction process, thereby drawing more valuable conclusions. Overall, this technical solution improves the efficiency and accuracy of destruction testing by comprehensively considering material properties, environmental factors and loading strategies. This helps to discover potential problems earlier in the design and production process, thereby reducing costs and risks.

[0152] In summary, the above technical solution can more comprehensively and accurately simulate and evaluate the performance of the simulated connection model in the destructive test, providing strong support for product design and production.

[0153] Specifically, after the initial loading force is set, setting the force rate includes:

[0154] After the initial loading force is set, extracting ambient temperature data and ambient humidity data;

[0155] The environmental impact coefficient is obtained by using the environmental temperature data and the environmental humidity data; wherein the environmental impact coefficient is obtained by the following formula:

[0156] ;

[0157] Wherein, λ represents the environmental influence coefficient; k represents the temperature influence weight coefficient corresponding to the material; w represents the humidity influence weight coefficient corresponding to the material; T and W represent the ambient temperature data and ambient humidity data corresponding to the simulated environment corresponding to the current test; T band W b Indicates the theoretical ideal ambient temperature and humidity values ​​corresponding to the material;

[0158] Extract the maximum allowed test duration corresponding to the destructive test;

[0159] The time impact coefficient is obtained by using the maximum allowed test duration; wherein the time impact coefficient is obtained by the following formula:

[0160] ;

[0161] Among them, g represents the time influence coefficient; p represents the fatigue influence coefficient corresponding to the material; r represents the preset attenuation constant coefficient; t represents the maximum allowable test time corresponding to the destructive test, and e represents the exponential bottom;

[0162] The force adding rate is obtained by using the environmental influence coefficient and the time influence coefficient, and the force adding rate is obtained by the following formula:

[0163] ;

[0164] Among them, R represents the force rate; E represents the elastic modulus of the material; S represents the cross-sectional area of ​​the location point; g represents the time influence coefficient; λ represents the environmental influence coefficient.

[0165] The technical effect of the above technical solution is: by extracting ambient temperature data and ambient humidity data, and using these data to calculate the environmental impact coefficient (λ), the technical solution can dynamically adjust the force rate to adapt to different simulation environments. This helps to more accurately simulate the impact of environmental conditions in actual use scenarios on the material destruction process. The maximum allowable test duration corresponding to the destruction test is extracted, and the time impact coefficient (g) is calculated using the duration. This step takes into account the impact of the test duration on the fatigue properties of the material, making the setting of the force rate more scientific and reasonable. Finally, the force rate (R) is calculated by combining the elastic modulus (E) of the material, the cross-sectional area (S) of the position point, the time impact coefficient (g) and the environmental impact coefficient (λ). This comprehensive multi-factor approach ensures that the setting of the force rate takes into account both the physical properties of the material and the influence of environmental factors and time factors, thereby improving the accuracy and reliability of the test.

[0166] Through precise formula calculation and parameter setting, this technical solution makes the destruction test process more scientific and controllable. This helps to more accurately observe and analyze the behavior of materials during the destruction process, providing strong data support for product design and production. The force rate setting that comprehensively considers multiple influencing factors makes the test results closer to the actual application scenario. This helps to discover potential problems earlier in the design and production process, thereby reducing costs and risks and improving product quality and performance.

[0167] In summary, the above technical solution improves the scientificity, accuracy and practicality of the destructive test by dynamically adjusting the force rate by introducing environmental factors and time factors, and provides strong support for product design and production.

[0168] Specifically, after the initial loading force is set, the duration of each force application is set, including:

[0169] Extract afterburner rate and environmental impact factor;

[0170] Extraction time influence coefficient;

[0171] The coefficient factor is obtained by using the difference between the environmental impact coefficient and the time impact coefficient; wherein the coefficient factor is obtained by the following formula:

[0172] ;

[0173] Among them, X represents the coefficient factor; g represents the time influence coefficient; λ represents the environmental influence coefficient;

[0174] The coefficient factor is combined with the force adding rate to obtain the force adding duration of each force adding, wherein the force adding duration of each force adding is obtained by the following formula:

[0175] ;

[0176] Among them, ΔT represents the duration of each force addition; R represents the force addition rate; X represents the coefficient factor; g represents the time influence coefficient; C y Indicates the duration of the test that has been ongoing; t indicates the maximum allowable test duration corresponding to the destructive test.

[0177] The technical effect of the above technical solution is: by extracting the environmental impact coefficient (λ) and the time impact coefficient (g), and calculating the difference between them to obtain the coefficient factor (X), the technical solution can dynamically adjust the duration of each force increase (ΔT). This dynamic adjustment ensures that the test process can adapt to different environmental conditions and test duration requirements. When calculating the coefficient factor and the force increase duration, multiple factors such as the environmental impact coefficient, the time impact coefficient, the force increase rate, and the duration of the test are comprehensively considered. This comprehensive multi-factor method improves the scientificity and accuracy of the force increase duration setting.

[0178] Through precise formula calculation and parameter setting, this technical solution makes the duration of each force application more accurate and controllable. This helps to more accurately observe and analyze the behavior of materials during the destruction process, especially the response of materials under different environmental conditions and test durations. Reasonable force application duration settings can ensure that the test process obtains sufficient data within a limited time, thereby optimizing test efficiency. This technical solution helps to obtain more accurate test results in a shorter time by dynamically adjusting the force application duration. The force application duration setting takes into account environmental impacts, time factors, force application rate and other aspects, so that the test results are closer to the actual application scenario. This helps to discover potential problems earlier in the design and production process, and provides a strong guarantee for the quality and performance of the product.

[0179] In summary, the above technical solution comprehensively considers various influencing factors by dynamically adjusting the duration of each force application, thereby improving the accuracy, controllability and practicality of the destructive test and providing strong support for product design and production.

[0180] For S5, the construction site is constructed according to the standard connection distribution data, and data is recorded according to the final construction situation. The data records on site are compared with the standard connection distribution data, and the on-site qualification rate of the standard connection distribution data is judged according to the comparison results, including:

[0181] Print and distribute the data parameters and distribution drawings in the standard connection distribution data;

[0182] Construction personnel carry out on-site construction according to data parameters and distribution drawings;

[0183] At the same time, the construction personnel recorded the on-site construction data, including the number, connection method, connection strength and distribution location of high-strength bolts;

[0184] The on-site construction data is compared with the standard connection distribution data, and the on-site qualification rate of the standard connection distribution data applied to the construction site is determined based on the comparison results. The on-site qualification rate is divided into primary, secondary and tertiary scores.

[0185] Specifically, by printing and distributing the data parameters and distribution drawings in the standard connection distribution data, it is ensured that all construction workers on the construction site can work according to unified standards, improving the consistency and accuracy of construction. The construction workers record the data on the construction site, including the number of high-strength bolts, connection methods, connection strength, distribution location, etc. These data provide a reliable basis for subsequent data comparison and problem analysis, and enhance the traceability of the construction process. By comparing the on-site construction data with the standard connection distribution data in real time, problems or deviations in the construction can be quickly discovered, and timely adjustments can be made accordingly, thereby ensuring the quality and progress of the construction. The introduction of the on-site qualified rate evaluation mechanism of the first-level scoring, the second-level scoring and the third-level scoring can quantitatively evaluate the construction quality and provide clear standards and basis for quality control. At the same time, this evaluation mechanism can also motivate construction workers to implement the standards more seriously and improve the quality of construction.

[0186] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0187] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. The calculation method of the accurate distribution of the full bolt connection between the cross steel column and the main steel beam node is characterized by: The steps include: S1: Material data collection: Obtain basic data of installation materials from the database, and uniquely encode and label each type of material and basic data of the material, and obtain target material data after unique encoding and labeling; S2: Force node analysis: confirm the node position according to the target material data, and then analyze the force data according to each node position. After the force data analysis, the target force node data is obtained; S3: Bolt connection simulation: construct a bolt installation model according to the target stress node data, use the BIM model to simulate the bolt connection of the bolt installation model, and obtain a simulated connection model after the bolt connection simulation; S4: Simulation data decision: The simulated connection model is subjected to a destructive test, and the qualification rate of the simulated connection model is determined according to the destructive test results. The installation plan is formulated and adjusted according to the qualification rate, and the standard connection distribution data is obtained after the installation plan is formulated and adjusted; S5: On-site installation effect evaluation: The construction site is constructed according to the standard connection distribution data, and data is recorded according to the final construction situation. The data records on site are compared with the standard connection distribution data, and the on-site qualification rate of the standard connection distribution data is determined according to the comparison results; In S2, the node position is confirmed according to the target material data, and then the force data analysis is performed according to each node position, including: Confirm the position of the stress node based on the cross-shaped steel column, main steel beam, connection plate and high-strength bolts; Obtain on-site construction drawings from the database and use the structural 3D model to construct the on-site construction 3D model; Import load data into the constructed on-site construction 3D model, including dead load, live load and wind load; After the load data is imported into the on-site construction 3D model, load analysis is performed. After the load analysis, the structural internal forces of the on-site construction 3D model are obtained. The structural internal forces include bending moment, shear force and axial force. Identify the node positions in the on-site construction three-dimensional model whose force values ​​are within a preset range based on the structural internal forces; The connection characteristics are analyzed based on the material properties of the cross-shaped steel column, main steel beam, connection plate and high-strength bolts, where the material properties are the yield strength, elastic modulus and Poisson's ratio of the material; the connection characteristics are the pre-tension and friction coefficient of the material analyzed based on the material properties; According to the material connection characteristics, the specific node position of each material in the on-site construction 3D model is confirmed, and the target stress node data is finally obtained; The simulated connection model in S4 will be subjected to a destructive test, and the qualified rate of the simulated connection model will be determined based on the destructive test results. The installation plan will be formulated and adjusted based on the qualified rate, including: Before the simulated connection model is subjected to a destructive test, the load parameters and application methods in the destructive test are determined, wherein a stepwise loading method is used to simulate the gradual increase of the actual load; After the load parameters and application methods are confirmed, the simulated connection model will be subjected to nonlinear analysis. The nonlinear analysis simulates the behavior of high-strength bolts and connection plates under the limit state. At the same time, the parameter data of stress, strain and displacement of high-strength bolts are monitored during the simulation; The failure mode of the high-strength bolt connection is obtained according to the nonlinear analysis results, wherein the failure mode includes shear failure, tensile failure and fatigue failure, and the failure load is confirmed according to the failure mode; Obtain the destructive test result of the simulated connection model according to the destructive load, and compare the destructive test result with the preset standard result; If the number of damaged bolts during the comparison of the results is within the preset standard range, the simulated connection model is qualified; If the number of damaged bolts is not within the preset standard range during the result comparison, the simulated connection model is a non-qualified standard, and the non-qualified standard is subjected to abnormal analysis, which is to analyze the bearing capacity and connection method of the high-strength bolts. After the abnormal analysis is completed, the destructive test is re-performed until the destructive test result meets the qualified standard; Formulate a plan based on the comparison of the results of the qualified standards, including the number of high-strength bolts, connection method, connection strength and distribution position; Finally, standard connection distribution data is obtained; The simulated connection model was subjected to destructive testing, including: Extract the load type corresponding to the destructive test, where the load type includes pressure, tension, bending moment and shear force; Extracting parameter information of the material corresponding to the test position point in the simulated connection model; wherein the parameter information includes the elastic modulus of the material, the yield strength of the material and the cross-sectional area of ​​the position point; Retrieving simulated environmental parameters corresponding to the test location points in the simulated connection model; wherein the simulated environmental parameters include environmental temperature data and environmental humidity data; The initial loading force is obtained by using the yield strength of the material and the cross-sectional area of ​​the location point in combination with the ambient temperature data and the ambient humidity data; wherein the initial loading force is obtained by the following formula: ； Wherein, F0 represents the initial loading force; S represents the cross-sectional area of ​​the position point; f represents the yield strength of the material; α represents the expected failure form coefficient; k represents the temperature influence weight coefficient corresponding to the material; w represents the humidity influence weight coefficient corresponding to the material; T and W represent the ambient temperature data and ambient humidity data corresponding to the simulated environment of the current test; T b and W b Indicates the theoretical ideal ambient temperature and humidity values ​​corresponding to the material; After the initial loading force is set, setting the force adding rate and the duration of each force adding; Performing a destructive test on the test position points in the simulated connection model according to the initial loading force, the force rate and the force duration of each force; After the initial loading force is set, setting the force rate includes: After the initial loading force is set, extracting ambient temperature data and ambient humidity data; The environmental impact coefficient is obtained by using the environmental temperature data and the environmental humidity data; wherein the environmental impact coefficient is obtained by the following formula: ； Where λ represents the environmental impact coefficient; k represents the temperature impact weight coefficient corresponding to the material; w represents the humidity impact weight coefficient corresponding to the material; T and W represent the ambient temperature data and ambient humidity data corresponding to the simulated environment of the current test; T b and W b Indicates the theoretical ideal ambient temperature and humidity values ​​corresponding to the material; Extract the maximum allowed test duration corresponding to the destructive test; The time impact coefficient is obtained by using the maximum allowed test duration; wherein the time impact coefficient is obtained by the following formula: ； Among them, g represents the time influence coefficient; p represents the fatigue influence coefficient corresponding to the material; r represents the preset attenuation constant coefficient; t represents the maximum allowable test time corresponding to the destructive test, and e represents the exponential bottom; The force adding rate is obtained by using the environmental influence coefficient and the time influence coefficient, and the force adding rate is obtained by the following formula: ； Among them, R represents the force rate; E represents the elastic modulus of the material; S represents the cross-sectional area of ​​the location point; g represents the time influence coefficient; λ represents the environmental influence coefficient; After the initial loading force is set, the duration of each force application is set, including: Extract afterburner rate and environmental impact factor; Extraction time influence coefficient; The coefficient factor is obtained by using the difference between the environmental impact coefficient and the time impact coefficient; wherein the coefficient factor is obtained by the following formula: ； Among them, X represents the coefficient factor; g represents the time influence coefficient; λ represents the environmental influence coefficient; The coefficient factor is combined with the force adding rate to obtain the force adding duration of each force adding, wherein the force adding duration of each force adding is obtained by the following formula: ； Among them, ΔT represents the duration of each force increase; R represents the force increase rate; X represents the coefficient factor; g represents the time influence coefficient; C y Indicates the duration of the test that has been ongoing; t indicates the maximum allowable test duration corresponding to the destructive test.

2. The method for calculating the precise distribution of all-bolt connections between cross steel columns and main steel beams according to claim 1 is characterized in that: In S1, the basic data of the installation materials are obtained from the database, and each type of material and the basic data of the material are uniquely coded and labeled, including: First, retrieve the installation materials from the database, including cross-shaped steel column, main steel beam, connection plate and high-strength bolts; Confirm the basic data of each installation material, among which the basic data of the cross-shaped steel column includes size, cross-sectional area, weight and material; the basic data of the main steel beam includes section type, size, bending strength, shear strength, section resistance moment, section inertia moment and elastic modulus; the basic data of the connecting plate includes size, hole diameter, hole spacing and material; the basic data of the high-strength bolt includes model, performance grade, pre-tension and friction coefficient.

3. The method for calculating the precise distribution of all-bolt connections between cross steel columns and main steel beams according to claim 2 is characterized in that: In S1, the basic data of the installation materials are obtained from the database, and each type of material and the basic data of the material are uniquely coded and labeled, which also includes: Uniquely code and label the materials and their basic data; First confirm the coding elements, which include prefix, sequence number, timestamp and suffix; The prefix is ​​the type of material, the serial number is a number that increases in sequence, the timestamp is the time when the material is saved in the database, and the suffix is ​​the production batch of the material; The material and the basic data of the material are uniquely coded and generated according to the coding elements, and after the generation, a unique coding number of the material and the basic data of the material is obtained.

4. The method for calculating the precise distribution of all-bolt connections between cross steel columns and main steel beams according to claim 3 is characterized in that: The bolt installation model is constructed according to the target stress node data in S3, and the bolt installation model is simulated by bolt connection using the BIM model, including: Create a family file of high-strength bolts based on the target stress node data. The family file includes bolts, nuts and washers. Import the family file of high-strength bolts according to the node position of the on-site construction three-dimensional model in the target stress node data, and obtain the installation model of each high-strength bolt in the on-site construction three-dimensional model after importing; Use the BIM model to confirm the installation position of each high-strength bolt in the installation model and confirm the connection type of the high-strength bolt, where the connection type includes rigid connection and hinged connection; Use the BIM model to simulate the connection between high-strength bolts and cross-shaped steel columns, main steel beams and connection plates; The simulated connection includes simulating the preload of the high-strength bolt, the contact behavior between the bolt head, nut and connection plate, and the slip and deformation of the high-strength bolt when subjected to stress; Finally, the simulated connection data is obtained.

5. The method for calculating the precise distribution of all-bolt connections between cross steel columns and main steel beams according to claim 4 is characterized in that: For S5, the construction site is constructed according to the standard connection distribution data, and data is recorded according to the final construction situation. The data records on site are compared with the standard connection distribution data, and the on-site qualification rate of the standard connection distribution data is determined according to the comparison results, including: Print and distribute the data parameters and distribution drawings in the standard connection distribution data; Construction personnel carry out on-site construction according to data parameters and distribution drawings; At the same time, the construction personnel recorded the on-site construction data, including the number, connection method, connection strength and distribution location of high-strength bolts; The on-site construction data is compared with the standard connection distribution data, and the on-site qualification rate of the standard connection distribution data applied to the construction site is determined based on the comparison results. The on-site qualification rate is divided into primary, secondary and tertiary scores.

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