Beam string structure optimization design method and system

Abstract

The invention provides an optimal design method and system for a beam string structure, and aims to realize whole-process management of the beam string structure from design to optimization by integrating three-dimensional modeling, data integration and analysis capabilities of a BIM technology, improve design efficiency and ensure safety and economy of the structure. According to the method and the system, parameterization and visualization characteristics of a BIM model are fully utilized, and mechanical characteristics and optimization design theories of the beam string structure are combined, so that precise modeling, stress analysis, stability calculation and multi-objective optimization design of the beam string structure are realized.

Description

Technical Field

[0001] The invention relates to the technical field of building structure design and optimization, and in particular to a beam-string structure optimization design method and system. Background Art

[0002] As an efficient large-span spatial structure system, the beam string structure consists of rigid components, tension cables / rods and struts, and has the advantages of clear force, diverse forms, and a combination of rigidity and flexibility. However, traditional design methods have problems such as low efficiency and insufficient accuracy in the modeling, analysis and optimization process. The introduction of BIM technology provides new ideas and methods for the optimization design of beam string structures. Summary of the invention

[0003] In order to solve the above technical problems, a technical solution adopted by a beam string structure optimization design method of the present invention comprises the following steps: (a) Establishing a BIM model of the foundation pit project, wherein the BIM model includes information such as foundation pit geological conditions, support structure design specifications, and construction requirements; (b) performing structural analysis using structural analysis software according to the foundation pit geological conditions, support structure design specifications and construction requirements in the BIM model to obtain an initial beam string structure design solution; (c) optimizing the initial beam string structure design, including but not limited to: adjusting the beam string's rise-to-span ratio, the number of struts, the cross-sectional dimensions of the tie rods, and the moment of inertia to obtain an optimal structural design; (d) Use the cost estimation module to estimate the cost of the optimized beam string structure design to ensure the economy of the design; (e) Use virtual reality technology to generate three-dimensional visual models to facilitate review and confirmation of the feasibility of design solutions; (f) During the construction process, the design plan shall be adjusted according to the actual situation on site to ensure construction quality and safety.

[0004] As a further solution of the present invention, the BIM model established in step (a) also includes the following information: The location and height of buildings around the foundation pit; Distribution of underground pipelines in the construction area; Surrounding traffic conditions and environmental restrictions.

[0005] As a further solution of the present invention, the optimization of the beam string structure design in step (c) includes: Use genetic algorithm and particle swarm optimization algorithm to automatically adjust the span-ratio, number of struts, cross-sectional dimensions of tie rods and moment of inertia parameters of the beam string; According to the optimization objectives, the optimal parameter combination is selected to minimize the cost and maximize the bearing capacity of the beam string structure.

[0006] As a further solution of the present invention, the cost estimation module of step (d) can calculate the total cost based on the material price, labor cost, and machinery equipment rental fee information.

[0007] As a further aspect of the present invention, the virtual reality technology of step (e) can generate an interactive three-dimensional model, supporting users to browse and review it through virtual reality devices.

[0008] As a further solution of the present invention, the specific method of adjusting the design scheme in step (f) includes: Use the real-time data update function in the BIM model to reflect the latest construction progress and changes; Adjust the design parameters of the beam string structure based on problems encountered during construction, including changing geological conditions and construction delays; Use dynamic adjustment mechanism to ensure the safety and economy of the structure.

[0009] As a further solution of the present invention, in the beam string structure, the stress calculation of the struts and the tie rods is multi-objective optimized and a mathematical model is constructed. The calculation formula is as follows: , in is the critical bending stress of the brace or tie rod material, E is the elastic modulus of the material, I is the moment of inertia of the interface, L is the length of the strut or tie rod, k is the end restraint factor, which depends on the restraint conditions at both ends of the brace or tie rod. F is the axial force acting on the strut or tie rod, α is a coefficient related to material properties and structural geometry, A is the cross-sectional area of ​​the brace or tie rod; this model considers the instability of the brace or tie rod when subjected to axial compression load. Through optimization design, the cross-sectional size, material selection, and length factor of the brace or tie rod can be adjusted to ensure that the critical buckling stress of the brace or tie rod is large enough to ensure that the structure will not be unstable under the expected load. During the optimization design process, numerical analysis software can be used to solve the above complex formula to ensure the safety and stability of all braces and tie rods in the optimized beam string structure. This optimization design method can ensure the safety of the structure while reducing costs by reducing material usage or selecting more economical materials, thereby achieving economic and efficient structural design.

[0010] As a further solution of the present invention, a beam string structure optimization design system includes the following modules: BIM model building module, used to build a BIM model that includes foundation pit geological conditions, support structure design specifications and construction requirements; A structural analysis module, used to perform structural analysis based on the BIM model and output an initial design solution; Design optimization module, used to automatically adjust the design parameters of the beam string structure to achieve structural optimization; Cost estimation module, used to make cost estimation based on the optimized design scheme; A 3D visualization module is used to generate a 3D visualization model of the optimized design solution; The dynamic adjustment module is used to adjust the design plan according to the actual situation during the construction process.

[0011] As a further solution of the present invention, the BIM model building module can also integrate the following information: The location and height of buildings around the foundation pit; Distribution of underground pipelines in the construction area; Surrounding traffic conditions and environmental restrictions.

[0012] Beneficial effects: The present invention proposes a beam string structure optimization design method and system, which significantly improves the design efficiency and quality of the beam string structure by integrating advanced computer-aided design and analysis technology. The specific beneficial effects are as follows: 1. Improvement of design accuracy: The present invention uses BIM technology to conduct comprehensive digital modeling of foundation pit engineering, which can accurately obtain information such as foundation pit geological conditions, surrounding environment and design specifications, thereby realizing accurate design of beam string structures. Compared with traditional design methods, the present invention can more accurately predict the behavior of the structure under actual working conditions, ensuring the safety and stability of the structure.

[0013] 2. Optimization design process: The present invention adopts an intelligent optimization algorithm, which can automatically adjust the key parameters of the beam string, such as the span-rise ratio, the number of struts, the cross-sectional dimensions of the tie rods, and the moment of inertia in a short time, so as to find the best design solution. This method not only greatly shortens the design cycle, but also ensures that the design solution meets the structural performance requirements while minimizing the material cost and construction difficulty.

[0014] 3. Cost saving: Through the optimization design method of the present invention, unnecessary material waste can be effectively reduced. At the same time, through the precise cost estimation module, the total cost of the project can be accurately predicted, which is conducive to the reasonable planning and control of the project budget. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A flowchart of the steps of a beam string structure optimization design method of the present invention; Figure 2A module diagram of a beam string structure optimization design system of the present invention; Figure 3 The figure is a comparison chart of the bearing capacity of the beam string structure using the traditional design method and the optimized design method adopted by the present invention. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below in conjunction with the embodiments.

[0017] See also Figure 1 As shown, a technical solution adopted by a beam string structure optimization design method of the present invention includes the following steps: (a) Establishing a BIM model of the foundation pit project, wherein the BIM model includes information such as foundation pit geological conditions, support structure design specifications, and construction requirements; (b) performing structural analysis using structural analysis software according to the foundation pit geological conditions, support structure design specifications and construction requirements in the BIM model to obtain an initial beam string structure design solution; (c) optimizing the initial beam string structure design, including but not limited to: adjusting the beam string's rise-to-span ratio, the number of struts, the cross-sectional dimensions of the tie rods, and the moment of inertia to obtain an optimal structural design; (d) Use the cost estimation module to estimate the cost of the optimized beam string structure design to ensure the economy of the design; (e) Use virtual reality technology to generate three-dimensional visual models to facilitate review and confirmation of the feasibility of design solutions; (f) During the construction process, the design plan shall be adjusted according to the actual situation on site to ensure construction quality and safety.

[0018] Furthermore, the BIM model established in step (a) also includes the following information: The location and height of buildings around the foundation pit; Distribution of underground pipelines in the construction area; Surrounding traffic conditions and environmental restrictions.

[0019] As a further solution of the present invention, the optimization of the beam string structure design in step (c) includes: Use genetic algorithm and particle swarm optimization algorithm to automatically adjust the span-ratio, number of struts, cross-sectional dimensions of tie rods and moment of inertia parameters of the beam string; According to the optimization objectives, the optimal parameter combination is selected to minimize the cost and maximize the bearing capacity of the beam string structure.

[0020] Furthermore, the cost estimation module of step (d) can calculate the total cost based on the material price, labor cost, and machinery and equipment rental fee information.

[0021] Furthermore, the virtual reality technology of step (e) can generate an interactive three-dimensional model, which supports users to browse and review through virtual reality devices.

[0022] Furthermore, the specific method of adjusting the design scheme in step (f) includes: Use the real-time data update function in the BIM model to reflect the latest construction progress and changes; Adjust the design parameters of the beam string structure based on problems encountered during construction, including changing geological conditions and construction delays; Use dynamic adjustment mechanism to ensure the safety and economy of the structure.

[0023] Furthermore, as a further solution of the present invention, in the beam string structure, the stress calculation of the struts and the tie rods is multi-objective optimized and a mathematical model is constructed. The calculation formula is as follows: , in is the critical bending stress of the brace or tie rod material, E is the elastic modulus of the material, I is the moment of inertia of the interface, L is the length of the strut or tie rod, k is the end restraint factor, which depends on the restraint conditions at both ends of the brace or tie rod. F is the axial force acting on the strut or tie rod, α is a coefficient related to material properties and structural geometry, A is the cross-sectional area of ​​the brace or tie rod; this model considers the instability of the brace or tie rod when subjected to axial compression load. Through optimization design, the cross-sectional size, material selection, and length factor of the brace or tie rod can be adjusted to ensure that the critical buckling stress of the brace or tie rod is large enough to ensure that the structure will not be unstable under the expected load. During the optimization design process, numerical analysis software can be used to solve the above complex formula to ensure the safety and stability of all braces and tie rods in the optimized beam string structure. This optimization design method can ensure the safety of the structure while reducing costs by reducing material usage or selecting more economical materials, thereby achieving economic and efficient structural design.

[0024] For further information, see Figure 3 As shown, it is a comparison diagram of the bearing capacity of the beam string structure using the traditional design method and the optimization design method adopted by the present invention. After the beam string structure is optimized, the beam string structure has a greater bearing capacity under the same strain size by using the optimization design method of the present invention.

[0025] For further information, see Figure 2 As shown, a beam string structure optimization design system of the present invention is provided, and the system includes the following modules: BIM model building module, used to build a BIM model that includes foundation pit geological conditions, support structure design specifications and construction requirements; A structural analysis module, used to perform structural analysis based on the BIM model and output an initial design solution; Design optimization module, used to automatically adjust the design parameters of the beam string structure to achieve structural optimization; Cost estimation module, used to make cost estimation based on the optimized design scheme; A 3D visualization module is used to generate a 3D visualization model of the optimized design solution; The dynamic adjustment module is used to adjust the design plan according to the actual situation during the construction process.

[0026] Furthermore, the BIM model building module can also integrate the following information: The location and height of buildings around the foundation pit; Distribution of underground pipelines in the construction area; Surrounding traffic conditions and environmental restrictions.

[0027] The above description is only an embodiment of this specification and is not intended to limit this specification. For those skilled in the art, this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this specification should be included in the scope of the claims of this application.

Claims

1. A beam string structure optimization design method, characterized in that: The following steps are involved: (a) Establishing a BIM model of the foundation pit project, wherein the BIM model includes information on the foundation pit geological conditions, support structure design specifications, and construction requirements; (b) performing structural analysis using structural analysis software according to the foundation pit geological conditions, support structure design specifications and construction requirements in the BIM model to obtain an initial beam string structure design solution; (c) optimizing the initial beam string structure design, including but not limited to: adjusting the rise-to-span ratio, the number of struts, the cross-sectional dimensions of the tie rods, and the moment of inertia parameters of the beam string, and obtaining an optimal structural design using a multi-objective optimization algorithm; (d) Conduct cost estimation for the optimized beam string structure design; (e) Use virtual reality technology to generate three-dimensional visual models to review and confirm the feasibility of design solutions; (f) During the construction process, the design plan shall be adjusted according to the actual situation on site.

2. The optimization design method for a beam string structure according to claim 1, characterized in that: The BIM model established in step (a) includes the following information: The location and height of buildings around the foundation pit; Distribution of underground pipelines in the construction area; Surrounding traffic conditions and environmental restrictions.

3. The optimization design method of a beam string structure according to claim 1, characterized in that: The optimization of the beam string structure design in step (c) includes: Use genetic algorithm and particle swarm optimization algorithm to automatically adjust the span-ratio, number of struts, cross-sectional dimensions of tie rods and moment of inertia parameters of the beam string; According to the optimization objectives, the optimal parameter combination is selected to minimize the cost and maximize the bearing capacity of the beam string structure.

4. The optimization design method of a beam string structure according to claim 1, characterized in that: The cost estimation module of step (d) calculates the total cost based on the material price, labor cost, and machinery and equipment rental fee information.

5. The optimization design method of a beam string structure according to claim 1, characterized in that: The virtual reality technology of step (e) can generate an interactive three-dimensional model, supporting users to browse and review it through virtual reality devices.

6. The optimization design method of a beam string structure according to claim 1, characterized in that: The specific method of adjusting the design scheme in step (f) includes: Use the real-time data update function in the BIM model to reflect the latest construction progress and changes; The design parameters of the beam string structure were adjusted based on issues encountered during construction, including changing geological conditions and construction delays.

7. The optimization design method of a beam string structure according to claim 1, characterized in that: In the beam string structure, the stress calculation of the struts and the tie rods is carried out by multi-objective optimization and a mathematical model is constructed. The calculation formula is as follows: ， in is the critical bending stress of the brace or tie rod material, E is the elastic modulus of the material, I is the moment of inertia of the interface, L is the length of the strut or tie rod, k is the end restraint factor, which depends on the restraint conditions at both ends of the brace or tie rod. F is the axial force acting on the strut or tie rod, α is a coefficient related to material properties and structural geometry, A is the cross-sectional area of ​​the brace or tie rod; this model considers the instability of the brace or tie rod when subjected to axial compression load. Through optimization design, the cross-sectional size, material selection, and length factor of the brace or tie rod are adjusted to ensure that the critical buckling stress of the brace or tie rod is large enough to ensure that the structure will not be unstable under the expected load.

8. A beam string structure optimization design system, characterized in that: The system includes the following modules: BIM model building module, used to build a BIM model that includes foundation pit geological conditions, support structure design specifications and construction requirements; A structural analysis module, used to perform structural analysis based on the BIM model and output an initial design solution; Design optimization module, used to automatically adjust the design parameters of the beam string structure to achieve structural optimization; Cost estimation module, used to make cost estimation based on the optimized design scheme; A 3D visualization module is used to generate a 3D visualization model of the optimized design solution; The dynamic adjustment module is used to adjust the design plan according to the actual situation during the construction process.

9. The beam string structure optimization design system according to claim 8, characterized in that: The BIM model building module integrates the following information: The location and height of buildings around the foundation pit; Distribution of underground pipelines in the construction area; Surrounding traffic conditions and environmental restrictions.

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