Construction method and system of beam string structure steel truss supporting structure analysis model, medium and program product

Abstract

The invention relates to a construction method and system of a beam string structure steel truss supporting structure analysis model, a medium and a program product. The construction method comprises the steps that a drawn calculation sketch is obtained; calling finite element software to obtain a set finite element standard template file; importing the obtained calculation sketch into finite element software of a preset template file, inputting model analysis parameters, automatically mapping a section to a component line according to layer information, specifying a boundary soil spring, setting constraint conditions, and performing component connection processing so as to realize automatic construction of a structure analysis model, and on the basis of the constructed structure analysis model, constructing a structural analysis model. The component is endowed with load, pre-pressed axial pressure is formed by setting temperature, and a generated model is stored as a finite element calculation file. Compared with the prior art, the method has the advantages that the modeling efficiency is remarkably improved, human errors are reduced, and a powerful tool is provided for building foundation pit design.

Description

Technical Field

[0001] The invention relates to the field of building foundation pit design, and in particular to a construction method, system, medium and program of an analysis model of a beam-string steel truss support structure. Background Art

[0002] In the process of modern urbanization, the development and utilization of underground space has become increasingly important. The construction safety of underground structures is directly related to the stability of urban infrastructure and the safety of the surrounding environment. As a key link in the construction of underground structures, the safety of foundation pit engineering is particularly important. In the fields of high-rise building and subway construction, the excavation of deep foundation pit engineering is often located in the central area of ​​the city, with a complex surrounding environment, often with major traffic arteries, existing buildings or underground pipelines and other facilities. Therefore, in order to ensure construction safety and the stability of the surrounding environment, the side walls of the foundation pit must be effectively supported, reinforced and protected.

[0003] The traditional calculation and analysis process of the foundation pit beam string steel truss support solution relies on manual operation. Engineers need to perform complex steps such as structural modeling, load setting, boundary condition definition, and prestressing adjustment one by one according to the design plan drawings. These manual operations are not only time-consuming and labor-intensive, but also prone to human errors due to the large amount of data input and complex calculations involved, affecting the accuracy of the model and the reliability of the analysis results. In addition, with the increasing complexity and scale of engineering projects, the traditional manual modeling method has been unable to meet the needs of fast, efficient, and accurate engineering.

[0004] In order to solve this problem, it is urgent to design an automated algorithm program that can quickly generate a structural analysis model to improve the safety and economy of foundation pit engineering. This program should be able to automatically read the design drawings, intelligently identify structural elements, automatically set the necessary loads and boundary conditions, and accurately adjust the prestress, thereby achieving a seamless transition from the design to the structural analysis model. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a method, system, medium and program product for constructing an analysis model of a beam-string steel truss support structure, which can not only greatly improve the modeling efficiency and reduce human errors, but also shorten the construction period, reduce costs, and improve the quality and economic benefits of the overall project.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A first aspect of the present invention provides a method for constructing an analysis model of a beam string steel truss support structure, comprising the following steps:

[0008] S1: Obtain the drawn calculation diagram, including the concrete beam line, the inner support line and the outer soil spring line, and specify the corresponding layer information for each line;

[0009] S2: Call the finite element software to obtain the set finite element standard template file, including the cross-sectional properties, material properties, soil spring characteristics, and load analysis conditions of the defined components;

[0010] S3: Import the calculation diagram obtained in S1 into the finite element software with the preset template file, enter the model analysis parameters, automatically map the section to the component line according to the layer information, specify the boundary soil spring, set the constraint conditions, and perform component connection processing to realize the automatic construction of the structural analysis model. Based on the constructed structural analysis model, assign component loads, and form the pre-loaded axial pressure by setting the temperature. Save the generated model as a finite element calculation file.

[0011] Further, in S1, the inner support lines include main support lines, web member lines, beam-string steel tie rod lines, and beam-string support rod lines.

[0012] Furthermore, in S3, the model analysis parameters include spring stiffness value, earth pressure load, temperature load and prestress.

[0013] Further, in S3, the component connection processing includes setting a hinged connection.

[0014] Furthermore, in S3, the specifying of the boundary soil spring includes: mapping the set spring properties to the corresponding layer line.

[0015] Furthermore, in S3, the imparting of load to the component includes: imparting earth pressure to the concrete beam line in a direction perpendicular to the concrete beam line toward the inside of the foundation pit, and directly applying temperature load to the rod.

[0016] Furthermore, in S3, in the process of imparting load to the component, the prestress is loaded by a temperature increase method, the temperature of the rod is set, and a prestressed axial pressure is formed, which is set on the rod connecting the main support line and the support line with the concrete beam line.

[0017] A second aspect of the present invention provides a computer system, comprising a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of a method for constructing an analysis model of a beam-string steel truss support structure.

[0018] A third aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the method for constructing an analysis model of a beam-string steel truss support structure as described above are implemented.

[0019] A fourth aspect of the present invention provides a computer program product, comprising a computer program, which implements the steps of the above method when executed by a processor.

[0020] Compared with the prior art, the present invention has the following technical advantages:

[0021] 1) The present invention constructs a structural analysis model of the beam-string steel truss support structure through an automated method, which significantly improves the efficiency and accuracy of foundation pit engineering design. First, it reduces the time and labor intensity of manual modeling through an automated process, allowing engineers to quickly respond to design changes and project requirements, thereby saving a lot of time and human resources. Secondly, the use of standardized modeling processes and finite element templates greatly reduces the possibility of human errors, improves the consistency and reliability of the model, and ensures the accuracy of the structural analysis results. Finally, the automation technology of the present invention helps to reduce engineering costs, reduces the economic burden on enterprises by reducing the need for professional modelers, and at the same time speeds up project progress and improves overall economic benefits.

[0022] 2) The application of the present invention also promotes technological innovation in the field of building foundation pit design. It not only provides engineers with a new tool to deal with complex structural analysis problems, but also promotes the exploration and application of new technologies in the industry through the application of automation technology, and provides a new direction for future engineering practice and research. The use of this innovative method is expected to lead the construction industry to a more efficient and intelligent direction.

[0023] 3) The implementation of the present invention also helps to improve the safety of construction. Through an accurate structural analysis model, the risks that foundation pit projects may face during construction can be better predicted and evaluated, so that effective support, reinforcement and protection measures can be taken to ensure the safety of the construction process and the stability of the surrounding environment. This is especially important for projects with extremely high safety requirements such as high-rise buildings and subway construction, which helps to reduce engineering accidents and protect people's lives and property. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic flow chart of a method for constructing an analysis model of a beam-string steel truss support structure in the present invention. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms and other features not clearly described in this technical solution are all considered to be common technical features disclosed in the prior art.

[0026] Example 1

[0027] This embodiment provides a method for constructing an analysis model of a beam string steel truss support structure, comprising the following steps:

[0028] S1: Obtain the drawn calculation diagram, including the concrete beam line, the inner support line and the outer soil spring line, and specify the corresponding layer information for each line;

[0029] In S1, the inner support wires include main support wires, web wires, beam string steel tie wires, and beam string support wires.

[0030] The S1 step can specifically include the following two processes:

[0031] Draw the Calculation Diagram: This process involves creating a detailed graphical representation that includes the key structural elements of the excavation project, such as concrete beam lines, internal support lines (further subdivided into main support lines, web lines, beam string steel tie lines, beam string support lines), and external soil spring lines. These lines represent the actual physical components of the excavation support structure.

[0032] Assign layer information: During the drawing of the calculation diagram, a layer is assigned to each line or each structural element. The layer information is important because it allows quick identification and processing of each structural element during the subsequent automated modeling process. Each layer can contain specific properties such as color, line type, line width, etc., which help to distinguish different structural components and are used for correct mapping and analysis in the automated process.

[0033] S2: Call the finite element software to obtain the set finite element standard template file, including the cross-sectional properties, material properties, soil spring characteristics, and load analysis conditions of the defined components;

[0034] It includes the following two processes:

[0035] Define component properties: This process involves specifying the cross-sectional properties and material properties for each component in the foundation support structure. Cross-sectional properties include the shape and size of the component, such as the width and height of a beam, while material properties include the type of material (such as steel or concrete) and its physical and mechanical properties (such as elastic modulus, Poisson's ratio, density, etc.).

[0036] Setting up analysis cases: In this process, soil spring properties and load analysis cases are defined. The soil spring properties are used to simulate the interaction between the foundation structure and the surrounding soil, while the load analysis cases include all the load types expected to act on the structure, such as soil pressure, live load, temperature load, etc., as well as the distribution and magnitude of these loads.

[0037] S3: Import the calculation diagram obtained in S1 into the finite element software with the preset template file, obtain the set model analysis parameters, automatically map the section to the component line according to the layer information, specify the boundary soil spring, set the constraint conditions, and perform component connection processing to realize the automatic construction of the structural analysis model;

[0038] The model analysis parameters include spring stiffness value, earth pressure load, temperature load and prestress.

[0039] The component connection process includes setting an articulated connection.

[0040] The specifying of the boundary soil spring includes: mapping the set spring properties to the corresponding layer line.

[0041] The specific process includes the following:

[0042] Importing calculation diagrams and obtaining parameters: Upload the calculation diagrams obtained in S1 to the finite element software. At the same time, obtain the model analysis parameters, including spring stiffness, earth pressure load, temperature load and prestress, etc., to provide necessary input data for subsequent model construction.

[0043] Finite element analysis software call and model construction: Call the finite element analysis software and open the finite element standard template file set in S2. Specifically, it involves mapping the layer information to the component line to determine the cross-sectional properties of the component, specifying the boundary soil spring and setting the constraint conditions, and processing the connection relationship between the components to ensure the accuracy and completeness of the model.

[0044] Component connection processing and load assignment: After the model is built, component connection processing is carried out, which usually involves setting hinged connections, etc. Subsequently, component loads are assigned, including applying earth pressure loads to the concrete beam line, perpendicular to the beam line toward the foundation pit, and applying temperature loads directly to the rods. This step is a key link before model analysis, ensuring the correct application of loads and providing a basis for subsequent structural analysis.

[0045] Finally, based on the constructed structural analysis model, the component load is assigned, and the pre-stressed axial pressure is formed by setting the temperature, and the generated model is saved as a finite element calculation file.

[0046] The loads imposed on the components include: assigning soil pressure to the concrete beam line in a direction perpendicular to the concrete beam line toward the inside of the foundation pit, and applying temperature loads directly to the rods.

[0047] In the process of imparting load to the components, the prestress is loaded by the temperature increase method. The temperature of the rod is set to form a prestressed axial pressure, which is set on the rods connecting the main support line and the support line with the concrete beam line.

[0048] The specific process includes the following:

[0049] Prestressed loading: The "temperature rise method" is used to apply prestress to the relevant components in the structural model. This process sets a virtual temperature value for the selected rod in the program, and simulates the effect of prestress through this temperature change, thereby introducing the axial pressure of prestress in the structural model. This method is a common technical means to simulate the prestress state of prestressed concrete beams or other structural elements in actual engineering.

[0050] Model saving and output: After completing the prestressing loading, the constructed structural analysis model is saved as a finite element calculation file. This ensures that the model can be correctly read and processed by the finite element analysis software for subsequent structural analysis calculations, such as displacement, stress, strain distribution, etc. The saved file usually contains all the necessary information of the model, including geometric data, material properties, boundary conditions, load conditions, and prestressed state, to facilitate further engineering analysis and evaluation.

[0051] This embodiment also provides a computer system, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of a method for constructing an analysis model of a beam-string steel truss support structure.

[0052] Memory is the memory unit of a computer system, responsible for storing computer programs and data generated during execution. It contains instruction sets used to direct the processor to perform specific tasks, as well as template files and related parameters for finite element analysis. Memory can be any form of non-volatile storage, such as a hard drive, solid-state drive, or any other type of computer-readable storage medium.

[0053] The processor is the core of the computer system, responsible for interpreting and executing the computer program instructions in the memory. In the present invention, the processor will execute the designed algorithms, which can automatically complete the whole process from importing the calculation diagram to generating the structural analysis model. The speed and efficiency of the processor directly affect the speed and accuracy of model building.

[0054] The computer program stored in the memory is the core of the present invention, which contains all the codes for implementing the method for constructing the analysis model of the beam string steel truss support structure. The program is executed according to the following steps:

[0055] Import calculation diagram: The program first imports the calculation diagram in CAD format into the system. The diagram contains all necessary information of the foundation pit support structure, such as concrete beam lines, internal support lines and soil spring lines.

[0056] Apply finite element templates: The program then calls preset finite element analysis templates that contain information such as component section properties, material properties, and soil spring characteristics.

[0057] Automatic mapping and setting: The program automatically maps sections to component lines based on layer information and sets boundary conditions and constraints.

[0058] Component connection processing: The program automatically handles the connections between components, such as setting hinged connections.

[0059] Assign loads: The program applies earth pressure loads and temperature loads to the corresponding components.

[0060] Prestress loading: Use the "heating method" to load prestress in the model.

[0061] Save model: Finally, the program saves the constructed model as a finite element calculation file for subsequent structural analysis.

[0062] Through this computer system, the present invention provides an automated method to generate an analytical model of a beam string steel truss support structure, which greatly improves modeling efficiency, reduces human errors, and makes the modeling process more standardized and repeatable. The application of this system can significantly improve work efficiency in the field of building foundation pit design, reduce costs, and improve the accuracy of structural analysis.

[0063] This embodiment also proposes a computer-readable storage medium, wherein the storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the above-mentioned method for constructing an analysis model of a beam-string steel truss support structure. The storage medium can be an electronic medium, a magnetic medium, an optical medium, an electromagnetic medium, an infrared medium, or a semiconductor system or a propagation medium. The storage medium can also include semiconductor or solid-state memory, a magnetic tape, a removable computer disk, a random access memory (RAM), a read-only memory (ROM), a hard disk, and an optical disk. The optical disk can include a compact disk-read only memory (CD-ROM), a compact disk-read / write (CD-RW), and a DVD.

[0064] This embodiment also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the method for constructing the above-mentioned analysis model of the beam-string steel truss support structure.

[0065] The main functions of the program include but are not limited to the following aspects:

[0066] Import and analysis of calculation diagrams: The program can recognize and import calculation diagrams in CAD format, which contain detailed design information of the beam string steel truss support structure. The program will analyze this information to provide basic data for subsequent modeling steps.

[0067] Application of finite element templates: The program has built-in standard templates for finite element analysis, which contain all the physical and material properties required for structural analysis. The program will automatically select the appropriate template for application based on the imported calculation diagram.

[0068] Automated modeling process: The program automatically executes the modeling process through a series of algorithms, including mapping of layer information, setting of boundary conditions and constraints, processing of component connections, etc.

[0069] Assignment of loads: The program can automatically apply earth pressure loads, temperature loads and other necessary loads to the corresponding parts of the model according to preset working conditions or user-entered data.

[0070] Prestressed loading: The program uses advanced "heating method" technology to simulate the prestressed loading process to ensure that the model can accurately reflect the prestressed state in actual work.

[0071] Saving and exporting the model: After completing all the modeling steps, the program will save the constructed model as a finite element calculation file, which can be directly used in the finite element analysis software for further structural analysis.

[0072] User Interface: To enhance the user experience, the program provides an intuitive user interface that allows users to easily input parameters, monitor modeling progress, and make necessary adjustments.

[0073] Through this computer program product, users can quickly and accurately construct the analysis model of the steel truss bracing structure of the beam string, greatly improving the efficiency of design and analysis. In addition, the automation characteristics of this program product also help to reduce costs, improve design quality, and ultimately promote technological progress in the field of building foundation pit design.

[0074] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A method for constructing an analysis model of a beam string steel truss support structure, characterized in that: The following steps are involved: S1: Obtain the drawn calculation diagram, including the concrete beam line, the inner support line and the outer soil spring line, and specify the corresponding layer information for each line; S2: Call the finite element software to obtain the set finite element standard template file, including the cross-sectional properties, material properties, soil spring characteristics, and load analysis conditions of the defined components; S3: Import the calculation diagram obtained in S1 into the finite element software with the preset template file, enter the model analysis parameters, automatically map the section to the component line according to the layer information, specify the boundary soil spring, set the constraint conditions, and perform component connection processing to realize the automatic construction of the structural analysis model. Based on the constructed structural analysis model, assign component loads, and form the pre-loaded axial pressure by setting the temperature. Save the generated model as a finite element calculation file.

2. The method for constructing an analysis model of a beam string steel truss support structure according to claim 1, characterized in that: In S1, the inner support wires include main support wires, web wires, beam string steel tie wires, and beam string support wires.

3. The method for constructing an analysis model of a beam string steel truss support structure according to claim 1, characterized in that: In S3, the model analysis parameters include spring stiffness value, earth pressure load, temperature load and prestress.

4. The method for constructing an analysis model of a beam string steel truss support structure according to claim 1, characterized in that: In S3, the component connection processing includes setting a hinged connection.

5. The method for constructing an analysis model of a beam string steel truss support structure according to claim 1, characterized in that: In S3, the specifying of the boundary soil spring includes: mapping the set spring properties to the corresponding layer line.

6. The method for constructing an analysis model of a beam string steel truss support structure according to claim 1, characterized in that: In S3, the imparting of load to the component includes: imparting earth pressure to the concrete beam line in a direction perpendicular to the concrete beam line toward the inside of the foundation pit, and directly applying temperature load to the rod.

7. The method for constructing an analysis model of a beam string steel truss support structure according to claim 1, characterized in that: In S3, in the process of imparting load to the component, the prestress is loaded by a temperature increase method, the temperature of the rod is set, and a prestressed axial pressure is formed, which is set on the rod connecting the main support line and the support line with the concrete beam line.

8. A computer system comprising a memory, a processor and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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