Prefabricated outer wall component type selection method and system of seismic mitigation and isolation fabricated building based on performance collaboration

Abstract

The invention relates to the technical field of prefabricated outer wall component type selection, in particular to a prefabricated outer wall component type selection method and system of a seismic mitigation and isolation fabricated building based on performance collaboration, and the method comprises the following steps: S1, obtaining a main structure scheme and a seismic mitigation and isolation scheme of the building; s2, building a main body structure seismic mitigation and isolation analysis model of the building through structure analysis software; s3, calling structure analysis software to output a numerical simulation calculation result of a main body structure anti-seismic performance core index, selecting a prefabricated external wall panel type meeting the anti-seismic performance requirement from the multi-target optimization type selection library according to the numerical simulation calculation result, and further establishing an effective candidate prefabricated external wall panel library, the numerical simulation calculation result is interlayer deformation; s4, defining a multi-objective optimization function; and S5, according to the multi-objective optimization function, performing model selection calculation on the prefabricated external wall panel in the effective candidate product library, and selecting the prefabricated external wall panel corresponding to the minimum value of the multi-objective optimization function. According to the method, the optimal type can be selected from various prefabricated outer wall component types.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated exterior wall component selection, and in particular to a method and system for selecting prefabricated exterior wall components of a seismic isolation prefabricated building based on performance synergy. Background Art

[0002] Prefabricated buildings refer to buildings that transfer a large amount of on-site work in traditional construction methods to factories, where building components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in factories, transported to construction sites, and assembled and installed on site through reliable connection methods. Prefabricated buildings mainly include prefabricated concrete structures, steel structures, modern wooden structures, etc. Because they use standardized design, factory production, assembly construction, information management, and intelligent applications, they are representatives of modern industrialized production methods. The advantages of prefabricated buildings are that they are conducive to saving resources and energy, reducing construction pollution, and improving labor production efficiency and quality and safety levels.

[0003] Prefabricated exterior wall panels can effectively protect the wall from wind and rain, pollution and corrosion by fixing it on the exterior wall of the building. Its unique intersection structure can make the entire wall more solid and improve the building's earthquake and wind resistance. Prefabricated exterior wall panels usually use environmentally friendly materials, do not produce harmful gases and pollutants, have good mildew resistance, anti-corrosion and fire resistance, and ensure indoor air quality. Prefabricated exterior wall panels usually use special production processes and materials, and have excellent waterproof properties.

[0004] In the context of vigorously promoting prefabricated buildings, the non-masonry exterior enclosure system is the main feature of prefabricated buildings, so industrial components are widely used in buildings as exterior enclosure walls, such as autoclaved aerated concrete slabs, etc. Due to the fragmentation of traditional professional division of labor and the design method based on conventional design standards and atlases, the improvement of the seismic performance of the seismic isolation main structure does not match the requirements of the traditional prefabricated building exterior enclosure components, which is often ignored in engineering practice and lacks a quantitative criterion for performance coordination of building structure design methods.

[0005] Starting from the core essence of the same-target multi-factor adaptive design, the building applies seismic isolation technology, and its seismic performance has been significantly improved. The main structure has reached the standard of being intact in a moderate earthquake and repairable in a major earthquake. The performance of the main structure under a major earthquake is also excellent, and it can basically continue to perform its normal bearing function after simple repairs. According to relevant requirements, the seismic performance of a building includes not only the seismic performance of the main structure, but also the seismic performance of non-structural components. Due to the continued existence of professional fragmentation in traditional design, it is easy to ignore the collaborative design of comprehensive performance improvement in the selection of non-load-bearing assembled external enclosure prefabricated wall panel materials, and the adaptability matching of multiple cross-professional goals is not fully considered, making it difficult to select the best type from a variety of prefabricated exterior wall component types.

[0006] Therefore, there is an urgent need for a method for selecting prefabricated exterior wall components for seismic isolation prefabricated buildings, so as to achieve the greatest possible matching and adaptation between the prefabricated exterior wall components and the main seismic isolation structure of the building, and to provide an effective basis for the accurate selection of prefabricated exterior wall panels. Summary of the invention

[0007] The purpose of the present invention is to provide a method for selecting prefabricated exterior wall components for seismic isolation prefabricated buildings based on performance synergy, aiming to improve the problem in the prior art that it is difficult to select the optimal type from a variety of prefabricated exterior wall component types for the main structure of seismic isolation buildings.

[0008] To achieve the above object, the present invention provides the following technical solutions: The method for selecting prefabricated exterior wall components of a seismic isolation prefabricated building based on performance synergy includes the following steps: S1. Obtain the main structure plan and seismic isolation plan of the building; S2. Establish a seismic isolation analysis model of the main structure of the building through structural analysis software; S3. Call the structural analysis software to output the numerical simulation calculation results of the core indicators of the seismic performance of the main structure, build a multi-objective optimization selection library for prefabricated exterior wall panels, select the type of prefabricated exterior wall panels that meet the seismic performance requirements from the multi-objective optimization selection library according to the numerical simulation calculation results, and then establish an effective candidate prefabricated exterior wall panel library, wherein the numerical simulation calculation result is the inter-story displacement angle; S4. define a multi-objective optimization function; S5. Performing a selection calculation of prefabricated exterior wall panels in a valid candidate product library according to the multi-objective optimization function, and selecting a prefabricated exterior wall panel type corresponding to a minimum value of the multi-objective optimization function.

[0009] Further, in step S3, the method of selecting the type of prefabricated exterior wall panel that meets the seismic performance requirements from the multi-objective optimization selection library according to the numerical simulation calculation results includes: selecting the maximum allowable horizontal deformation in the multi-objective optimization selection library. Greater than the interlayer deformation of the main structure Prefabricated exterior wall panel type x.

[0010] Furthermore, the ideal point method formula of the multi-objective optimization function is: ;in, is the i-th objective function of prefabricated exterior wall panels, is the type of prefabricated exterior wall panel in the i-th objective function, ω i is the weight coefficient of the i-th objective function, is the ideal value of the i-th objective function, m is the number of optimization objectives, is the distance between the actual value and the ideal value of the objective function of the prefabricated exterior wall panel type x.

[0011] Furthermore, step S6 is also included. If a prefabricated exterior wall panel that meets the seismic performance requirements cannot be selected from the valid candidate prefabricated exterior wall panel library, the main structure scheme and seismic isolation scheme of the building are adjusted, and steps S2-S5 are repeated to select the prefabricated exterior wall panel type corresponding to the minimum value of the multi-objective optimization function at this time.

[0012] Furthermore, the optimization objectives of the prefabricated exterior wall panels include at least one of cost, procurement cycle, carbon emissions, and installation efficiency.

[0013] The present invention also provides a prefabricated exterior wall component selection system for seismic isolation prefabricated buildings based on performance synergy, comprising The scheme acquisition module is used to obtain the main structure scheme and seismic isolation scheme of the building; A model building module, connected to the scheme obtaining module, is used to establish a main structure seismic isolation analysis model of the building based on the main structure scheme and seismic isolation scheme of the building; A simulation calculation module, connected to the model building module, is used to calculate and output numerical simulation calculation results of core indicators of the seismic performance of the main structure based on the seismic isolation analysis model of the main structure; A comparison and screening module, connected to the simulation calculation module, is used to compare the core indicators of the seismic performance of the current prefabricated exterior wall panels with the numerical simulation calculation results, and screen out prefabricated exterior wall panels that meet the seismic performance requirements from the multi-objective optimization selection library, thereby establishing an effective candidate prefabricated exterior wall panel library; The optimization calculation module is connected to the comparison and screening module and is used to perform prefabricated exterior wall panel selection calculation from a valid candidate prefabricated exterior wall panel library based on a multi-objective optimization function, and then select the prefabricated exterior wall panel type corresponding to the minimum value of the multi-objective optimization function.

[0014] Furthermore, the method by which the comparison and screening module selects prefabricated exterior wall panels that meet the seismic performance requirements from the multi-objective optimization selection library includes: Select the maximum allowable horizontal deformation in the multi-objective optimization selection library Greater than the interlayer deformation of the main structure Prefabricated exterior wall panel type x.

[0015] Furthermore, the ideal point method formula of the multi-objective optimization function of the optimization calculation module is: ,in, is the i-th objective function of prefabricated exterior wall panels, is the type of prefabricated exterior wall panel in the i-th objective function, ω i is the weight coefficient of the i-th objective function, is the ideal value of the i-th objective function, m is the number of optimization objectives, is the distance between the actual value and the ideal value of the objective function of the prefabricated exterior wall panel type x.

[0016] Furthermore, it also includes a judgment and adjustment module, which is respectively connected to the comparison and screening module and the scheme acquisition module, and the judgment and adjustment module is used to judge whether the type of prefabricated exterior wall panels that meets the seismic performance requirements is selected. If it is determined that the type of prefabricated exterior wall panels that meets the seismic performance requirements is not selected, the judgment and adjustment module adjusts the main structure scheme and seismic isolation scheme of the building in the scheme acquisition module.

[0017] Furthermore, the optimization target of the optimization calculation module includes at least one of cost, procurement cycle, carbon emission and installation efficiency.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a quantitative analysis method for the selection of prefabricated exterior wall panels based on recursive control. The method has high testing efficiency and can realize full-range testing of facade prefabricated exterior wall panels. The method can obtain the threshold value, i.e., the prerequisite, for the selection of prefabricated exterior wall components, accurately realize the matching and adaptation of the seismic performance of the prefabricated exterior wall components and the seismic isolation building structure, ensure the test accuracy, and provide an effective basis for the accurate selection of prefabricated exterior wall panels. For the main structure of the seismic isolation building, the present scheme facilitates the selection of the optimal solution from a variety of prefabricated exterior wall component types. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a flowchart of the method for selecting prefabricated exterior wall components for seismic isolation prefabricated buildings of the present invention; Figure 2 It is a structural diagram of the prefabricated exterior wall component selection system for seismic isolation prefabricated buildings of the present invention. DETAILED DESCRIPTION

[0020] 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.

[0021] Example 1 A selection method for prefabricated exterior wall components of seismic isolation prefabricated buildings based on performance synergy, referring to Figure 1, including the following steps: S1. Obtain the main structure plan and seismic isolation plan of the prefabricated building; among which, the seismic isolation plan includes the following: 1. Flexible support shock absorption technology: By setting up flexible support devices, the building will produce a certain degree of deformation under the action of earthquake, thereby reducing the seismic response; 2. Energy dissipation and shock absorption technology: by setting up energy dissipators, earthquake energy is converted into heat energy or other forms of energy, thereby reducing earthquake response; 3. Seismic isolation technology: By installing seismic isolation devices, the building is isolated from the ground so that the building is not directly affected by the earthquake, thereby reducing the seismic response; 4. Combined seismic isolation technology: Combine the above seismic isolation technologies to achieve better shock absorption effect; S2. Establish a seismic isolation analysis model for the main structure of the prefabricated building through structural analysis software; the steps of establishing the seismic isolation analysis model for the main structure include: 1. Establish a three-dimensional model: First, establish a three-dimensional model according to the design drawings, including the shape, size, material, etc. of the seismic isolation support; 2. Establish a mechanical model: Secondly, establish a mechanical model according to the structural characteristics of the seismic isolation support, including the support force, tensile force, and compressive force of the support; 3. Establish a material model: Finally, establish a material model according to the material properties of the seismic isolation support, including the elastic modulus, tensile strength, and compressive strength of the material; S3. Call the structural analysis software to output the numerical simulation calculation results of the core indicators of the seismic performance of the main structure, build a multi-objective optimization selection library for prefabricated exterior wall panels, select the type of prefabricated exterior wall panels that meet the seismic performance requirements from the multi-objective optimization selection library based on the numerical simulation calculation results, and then establish an effective candidate prefabricated exterior wall panel library. The numerical simulation calculation results are the inter-story displacement angle; the damage of the frame columns of the main structure can also be output to assist in analyzing and judging the seismic performance of the main structure; S4. Define a multi-objective optimization function; use the numerical simulation calculation results obtained in step S3 as the minimum threshold limiting condition of the multi-objective optimization function, eliminate the prefabricated exterior wall panel types that do not meet the seismic performance, and obtain a valid candidate product library; Among them, the role of the threshold is to exclude solutions that do not meet the requirements: by setting the threshold, the evaluation function will only be affected when the actual solution is greater than the threshold. In this way, those solutions that seriously do not meet the requirements on a certain goal can be excluded, and then an effective candidate product library can be obtained. The essence of collaborative design of building structures is to consider the mutual influence and mutual restriction of various factors. The physical meaning of the threshold is to reflect the mutual influence between these factors. By establishing a mapping relationship, adopting an improved formula, introducing threshold control, reducing the risk of overfitting in mathematical logic, and enhancing data robustness, the efficiency of data processing can be significantly improved.

[0022] S5. Select the prefabricated exterior wall panels from the valid candidate product library according to the ideal point method formula of the multi-objective optimization function, and select the prefabricated exterior wall panel type corresponding to the minimum value of the multi-objective optimization function. Each type of prefabricated exterior wall panel x can obtain a function value D (x) by improving the ideal point method formula, and n schemes can obtain n function values. By sorting the function values, the scores are ranked from low to high as the priority order, that is, the one with the lowest function value is closest to the ideal scheme.

[0023] This scheme proposes a quantitative analysis method for the selection of prefabricated exterior wall panels based on recursive control. It has high test efficiency and can realize full-range testing of facade prefabricated exterior wall panels. This method can obtain the threshold or prerequisite for the selection of prefabricated exterior wall components, accurately realize the matching and adaptation of prefabricated exterior wall components and the seismic performance of seismic isolation building structures, ensure the test accuracy, and provide an effective basis for the accurate selection of prefabricated exterior wall panels. For the main structure of seismic isolation buildings, this scheme facilitates the selection of the optimal solution from a variety of prefabricated exterior wall component types. The prefabricated exterior wall panels are initially selected through the deformation between the main structure layers, so that the seismic performance of the prefabricated exterior wall panels can be matched with the main structure, which is convenient for repairing the deformed prefabricated exterior wall panels after the earthquake, and can prevent the prefabricated exterior wall panels from being irreparable to a certain extent.

[0024] More specifically, in step S1, the main structure scheme includes a steel frame structure scheme and a reinforced concrete frame structure scheme, etc. In addition, the main structure can be of other types, including masonry structure engineering, steel tube concrete structure, steel concrete structure and wooden structure, etc.

[0025] Among them, reinforced concrete structural engineering is the most common type of building main structure. It is mainly composed of steel bars and concrete. Through the combination of the tensile properties of steel bars and the compressive properties of concrete, a structural system with high strength and good durability is formed. Concrete structural engineering is widely used in various types of buildings, such as residential buildings, commercial buildings, industrial plants, etc.

[0026] Steel structure engineering is widely used in large-span structures, high-rise buildings and other fields due to its light weight, high strength and easy installation. Steel structure has excellent seismic resistance and can well adapt to the test of natural disasters such as earthquakes. In addition, steel structure is also easy to industrialize and assemble on site, which greatly improves construction efficiency.

[0027] Masonry structure engineering is a structure built by mortar and block materials (such as clay bricks, blocks, etc.). This type of structure has the advantages of simple construction, low cost, good thermal insulation, etc., and is suitable for some low-rise or multi-story buildings. However, with the increase in building height and the improvement of earthquake resistance requirements, the application scope of masonry structure engineering has been limited to a certain extent.

[0028] Steel tube concrete structure combines the advantages of steel tube and concrete. Steel tube as the outer form and constraint of concrete can significantly improve the bearing capacity and ductility of concrete. This type of structure has the characteristics of light weight and high strength of steel tube, and also takes advantage of the good compressive performance of concrete. It is suitable for some buildings with high requirements for bearing capacity and seismic performance.

[0029] Steel-concrete structure is a composite structure in which steel is arranged in concrete. The synergy between steel and concrete enhances the concrete's shear, bending and torsion resistance. This type of structure is suitable for buildings that have high requirements for structural performance and bearing capacity, such as high-rise buildings, large bridges, etc.

[0030] Wood structures are still a popular choice in some specific areas or occasions (such as temples, antique blocks, resort villas, etc.). Wood structures have the advantages of being renewable, environmentally friendly, and having good thermal insulation properties, and can create a unique architectural style and atmosphere. However, due to the disadvantages of wood such as flammability and susceptibility to corrosion, the scope of application of wood structures is limited to a certain extent.

[0031] In summary, the main structure can be of many types, each of which has its own unique advantages and scope of application. When choosing the main structure type, comprehensive consideration should be given to factors such as the functional requirements of the building, geographical location, climatic conditions, and earthquake resistance requirements.

[0032] Example 2 On the basis of Example 1, in step S3 of this embodiment, the method for selecting the type of prefabricated exterior wall panel that meets the seismic performance requirements from the multi-objective optimization selection library according to the numerical simulation calculation results includes: selecting the maximum allowable horizontal deformation in the multi-objective optimization selection library Greater than the interlayer deformation of the main structure Prefabricated exterior wall panel type x.

[0033] Among them, the maximum allowable horizontal deformation It is the ratio of the maximum horizontal deformation displacement of the prefabricated exterior wall panel to its height. Deformation between layers of the main structure That is, the inter-layer displacement angle. The inter-layer displacement angle refers to the ratio of the maximum horizontal displacement between floors under the wind load calculated by the elastic method or the standard value of multiple earthquakes to the floor height Δu / h. The Δu / h of the i-th floor refers to the maximum value of the displacement difference ΔUi=Ui-Ui-1 between the i-th floor and the i-1-th floor at each point on the floor plane. The maximum horizontal allowable deformation of the prefabricated exterior wall panel corresponds to the inter-layer displacement angle of the main structure.

[0034] Example 3 On the basis of Example 1, in this embodiment, the ideal point method formula of the multi-objective optimization function is: ;in, is the i-th objective function of prefabricated exterior wall panels, is the type of prefabricated exterior wall panel in the i-th objective function, ω i is the weight coefficient of the i-th objective function, is the ideal value of the i-th objective function, m is the number of optimization objectives, is the distance between the actual value and the ideal value of the objective function of the prefabricated exterior wall panel type x.

[0035] Among them, the Ideal Point Method is an optimization strategy for solving multi-objective programming (MOP) problems. Its core idea is to transform the multi-objective programming problem into a single-objective optimization problem by defining ideal points and anti-ideal points, so as to find a solution that achieves the best results in all objectives.

[0036] The ideal point method is implemented by the following steps: ‌Define ideal and anti-ideal points‌: The ideal point is the solution that achieves the best results in all objectives, while the anti-ideal point is the solution that achieves the worst results in all objectives. By calculating the distance between the actual solution and these two points, decision makers can more easily make trade-offs and choices. ‌Calculate the distance between the actual solution and the ideal and anti-ideal points‌: In this way, the ideal point method provides decision makers with a clear reference framework to help them choose the best solution. In this solution, the distance between the actual solution and the ideal point is calculated to assist decision makers in selecting the comprehensive optimal solution for the type of prefabricated exterior wall panels.

[0037] The theoretical origin of the ideal point method can be traced back to the complexity of multi-objective decision-making problems. In multi-objective decision-making problems, there are usually conflicts between objectives, and decision makers need to make trade-offs between multiple objectives. The ideal point method provides an effective decision support framework for decision makers by introducing the concepts of ideal points and anti-ideal points.

[0038] In this embodiment, a corresponding weight coefficient may be set for each optimization objective function according to actual needs or different importance levels. In other embodiments, the ideal point method formula of the multi-objective optimization function may not use a weight coefficient.

[0039] Example 4 On the basis of Example 1, in this embodiment, the method for selecting prefabricated exterior wall components for seismic isolation prefabricated buildings based on performance synergy also includes step S6. If the prefabricated exterior wall panels that meet the seismic performance requirements cannot be selected from the valid candidate prefabricated exterior wall panel library, the main structure scheme and seismic isolation scheme of the building are adjusted, and steps S2-S5 are repeated to select the prefabricated exterior wall panel type corresponding to the minimum value of the multi-objective optimization function at this time.

[0040] In other embodiments, it is also possible to determine whether a valid candidate prefabricated exterior wall panel library is successfully constructed, and if not, adjust the main structure scheme and seismic isolation scheme of the building.

[0041] More specifically, in step S2, the structural analysis software used to establish the seismic isolation analysis model of the main structure of the building includes PKPM, YJK, 3D3S, MIDAS, ETABS, SAP2000, Perform 3D and SAUSAGE software.

[0042] ‌Structural analysis software is a tool used to analyze and design buildings or engineering structures. They use mathematical models and algorithms to predict the response of structures under various loads. ‌Common structural analysis software includes PKPM, YJK, 3D3S, MTS, MST, Tongji Venus, ETABS, SAP2000, SAFE, PERFORM-3D, MIDAS, STAAD PRO, ROBOT, EASY, FORTEN, ANSYS, ABAQUS, NASTRAN, MARC and LS-DYNA, etc. These software can be divided into two categories: domestic and foreign development. Domestic software such as PKPM, YJK, etc., while foreign software such as ETABS, SAP2000, etc. enjoy a high degree of international recognition.

[0043] Structural analysis software usually has the following functions: 1. Load analysis: Calculate the response of the structure under different loads, including static and dynamic loads; 2. Nonlinear analysis: dealing with nonlinear behavior of structures, such as plastic deformation and large deformation; 3. Optimized design: Optimize structural design through algorithms to reduce material usage and improve structural efficiency; Dynamic Analysis: Simulates the behavior of a structure under dynamic loads, such as earthquakes and wind loads.

[0044] These structural software are widely used in the fields of buildings, bridges, tunnels, water conservancy projects, etc. They can help engineers predict the performance of structures in the design stage, thereby avoiding modifications and adjustments after construction and reducing project costs and time.

[0045] Example 5 On the basis of Example 1, in step S4 of this embodiment, the optimization target of the prefabricated exterior wall panels includes one or more of cost, carbon emission and installation efficiency.

[0046] The objective functions of cost, procurement cycle and carbon emission are the minimum values ​​calculated based on the prefabricated exterior wall panel design, historical project experience or actual demand.

[0047] For example, the cost is calculated based on the positioning of the building, selecting the exterior wall material, and the detailed design to minimize the cost; The minimum carbon emissions of the exterior wall panel design can be achieved by selecting low-carbon materials and optimizing the design. Low-carbon materials can be selected from low-carbon glass or carpet concrete. When optimizing the design, you can consider reducing the type and material changes of the facade system: when designing the building volume, minimize the number of changes in the type and material of the facade system, which can reduce the complexity of materials and construction, thereby reducing carbon emissions; when optimizing the facade details: optimize and standardize the facade details, reduce unnecessary decoration and complex structures, and reduce the carbon emissions of materials and construction. The minimum carbon emission of the exterior wall panel design can be calculated by establishing a full life cycle carbon emission accounting model. The specific steps are as follows: ‌Production stage‌: Calculate the carbon emissions during the production of the exterior wall panels; ‌Transportation phase‌: Calculate the carbon emissions during the transportation of the exterior wall panels; ‌Construction phase‌: Calculate carbon emissions based on factors such as the type of energy consumed and the amount of energy consumed; ‌Demolition and recycling phase‌: calculate the carbon emissions from demolition operations, transportation of demolished materials, and recycling of demolished materials; Finally, the carbon emissions of each stage are added together to obtain the minimum carbon emissions of the exterior wall panel design over its entire life cycle. The objective function of installation efficiency is the maximum value obtained according to the specific design scheme, actual demand or industry experience standard. By setting the objective function for the cost, carbon emission and installation efficiency of prefabricated exterior wall panels, and setting the corresponding weight coefficient according to the importance of each objective, it is convenient to find the optimal solution based on each objective, that is, the selected prefabricated exterior wall panels have lower cost, less carbon emission and higher installation efficiency.

[0048] Example 6 This embodiment provides a prefabricated exterior wall component selection system for seismic isolation prefabricated buildings based on performance synergy, referring to Figure 2 ,include The scheme acquisition module is used to obtain the main structure scheme and seismic isolation scheme of the building; The model building module is connected to the scheme acquisition module and is used to establish a main structure seismic isolation analysis model of the building based on the main structure scheme and seismic isolation scheme of the building; The simulation calculation module is connected to the model building module and is used to calculate and output the numerical simulation calculation results of the core indicators of the seismic performance of the main structure based on the seismic isolation analysis model of the main structure; A comparison and screening module, connected to the simulation calculation module, is used to compare the core indicators of the seismic performance of the current prefabricated exterior wall panels with the numerical simulation calculation results, and to screen out prefabricated exterior wall panels that meet the seismic performance requirements from the multi-objective optimization selection library, thereby establishing an effective candidate prefabricated exterior wall panel library; The optimization calculation module is connected to the comparison and screening module and is used to perform prefabricated exterior wall panel selection calculation from the effective candidate prefabricated exterior wall panel library based on the multi-objective optimization function, and then select the prefabricated exterior wall panel type corresponding to the minimum value of the multi-objective optimization function.

[0049] Furthermore, the method for the comparison and screening module to screen out prefabricated exterior wall panels that meet the seismic performance requirements from the multi-objective optimization selection library includes: Select the maximum allowable horizontal deformation in the multi-objective optimization selection library Greater than the interlayer deformation of the main structure For the prefabricated exterior wall panel type x, the maximum horizontal allowable deformation of the prefabricated exterior wall panel corresponds to the deformation between the main structure layers. It is the ratio of the maximum horizontal deformation displacement of the prefabricated exterior wall panel to its height. Deformation between layers of the main structure That is, the inter-layer displacement angle. The inter-layer displacement angle refers to the ratio of the maximum horizontal displacement between floors under the wind load calculated by the elastic method or the standard value of multiple earthquakes to the floor height Δu / h. The Δu / h of the i-th floor refers to the maximum value of the displacement difference ΔUi=Ui-Ui-1 between the i-th floor and the i-1-th floor at each point on the floor plane. The maximum horizontal allowable deformation of the prefabricated exterior wall panel corresponds to the inter-layer displacement angle of the main structure.

[0050] Furthermore, the ideal point method formula of the multi-objective optimization function of the optimization calculation module is: ,in, is the i-th objective function of prefabricated exterior wall panels, is the type of prefabricated exterior wall panel in the i-th objective function, ω i is the weight coefficient of the i-th objective function, is the ideal value of the i-th objective function, m is the number of optimization objectives, is the distance between the actual value and the ideal value of the objective function of the prefabricated exterior wall panel type x.

[0051] Furthermore, it also includes a judgment and adjustment module, which is respectively connected to the comparison and screening module and the scheme acquisition module, and the judgment and adjustment module is used to judge whether the type of prefabricated exterior wall panels that meets the seismic performance requirements is selected. If it is determined that the type of prefabricated exterior wall panels that meets the seismic performance requirements is not selected, the judgment and adjustment module adjusts the main structure scheme and seismic isolation scheme of the building in the scheme acquisition module.

[0052] Furthermore, the optimization target of the optimization calculation module includes at least one of cost, procurement cycle, carbon emission and installation efficiency.

[0053] Example 7 The selection method of prefabricated exterior wall panels for a kindergarten construction project in Beijing includes the following steps: S1. Obtain the main structure plan and seismic isolation plan of the building; the kindergarten construction project adopts the steel structure frame and energy dissipation and shock absorption technology plan. S2. Establish the seismic isolation analysis model of the main structure of the kindergarten through structural analysis software; S3. Call the structural analysis software to output the numerical simulation calculation results of the core indicators of the seismic performance of the main structure, build a multi-objective optimization selection library for prefabricated exterior wall panels, select the type of prefabricated exterior wall panels that meet the seismic performance requirements from the multi-objective optimization selection library based on the numerical simulation calculation results, and then establish an effective candidate prefabricated exterior wall panel library. The numerical simulation calculation result is the interlayer deformation; The structural analysis software shows that the maximum interlayer deformation (interlayer displacement angle) of the structure under moderate earthquake is 1 / 211, and the bottom of the first-floor frame column under severe earthquake has moderate damage, that is, the interlayer deformation (interlayer displacement angle) of the main structure is =1 / 211; There are many types of materials in the multi-objective optimization selection library of prefabricated exterior wall panels, including autoclaved aerated concrete exterior wall panels, basalt composite exterior wall panels, and metal curtain wall insulation integrated exterior wall panels. Each material has its own standard index of maximum allowable horizontal deformation, node adaptability index, cost index, procurement cycle index, carbon emission index, and installation efficiency index.

[0054] Among them, the prefabricated autoclaved aerated concrete exterior wall panel product types are specifically divided into the maximum allowable horizontal deformation There are two types: 1 / 250 and 1 / 500, both of which are smaller than the inter-story displacement angle of the main structure. =1 / 211, the connection nodes are suitable for light damage conditions and cannot match the seismic performance requirements of the building in this case, so they are all eliminated.

[0055] The maximum horizontal deformation of basalt composite fiber exterior wall panels and metal curtain wall insulation integrated exterior wall panels are both 1 / 100, which meets the repair standard for major earthquakes, matches the seismic performance requirements of this case, and meets the requirements of greater than the inter-layer displacement angle of the main structure. That is, the current valid candidate product library includes basalt composite fiber exterior wall panels and metal curtain wall insulation integrated exterior wall panels.

[0056] S4. Define a multi-objective optimization function; this embodiment uses a single-objective optimization function of cost: , that is, m=1, and the optimal type with lower cost and closer to the above threshold is selected among the available products; S5. Performing a selection calculation of prefabricated exterior wall panels in a valid candidate product library according to the multi-objective optimization function, and selecting a prefabricated exterior wall panel type corresponding to a minimum value of the multi-objective optimization function.

[0057] According to the cost objective function, the cost data of each type of prefabricated exterior wall panel product is substituted into the multi-objective optimization function for calculation and solution, and the minimum value is selected.

[0058] Finally, the lowest cost basalt composite fiber exterior wall panel was selected.

[0059] Example 8 The selection method of prefabricated exterior wall panels for a kindergarten construction project in Kunming includes the following steps: S1. Obtain the main structure plan and seismic isolation plan of the building; the kindergarten building adopts reinforced concrete structural frame and seismic isolation technology plan; S2. Establish a seismic isolation analysis model of the main structure of the kindergarten building through structural analysis software; S3. Call the structural analysis software to output the numerical simulation calculation results of the core indicators of the seismic performance of the main structure, build a multi-objective optimization selection library for prefabricated exterior wall panels, select the type of prefabricated exterior wall panels that meet the seismic performance requirements from the multi-objective optimization selection library based on the numerical simulation calculation results, and then establish an effective candidate prefabricated exterior wall panel library. The numerical simulation calculation result is the interlayer deformation; The maximum value of the interlayer deformation (interlayer displacement angle) under moderate earthquakes is 1 / 750, and the bottom of the first-floor frame column is slightly damaged under severe earthquakes; that is, the interlayer deformation (interlayer displacement angle) of the main structure of the kindergarten is =1 / 750.

[0060] There are many materials in the multi-objective optimization selection library of prefabricated exterior wall panels, including two basalt composite exterior wall panels and two metal curtain wall insulation integrated exterior wall panels. Each material has its own horizontal maximum allowable deformation index, node adaptability index, cost index, procurement cycle index, carbon emission index, and installation efficiency index. That is, the horizontal maximum allowable deformation index, node adaptability index, cost index, procurement cycle index, carbon emission index, and installation efficiency index of each prefabricated exterior wall panel can be obtained by looking up the table.

[0061] The maximum horizontal allowable deformation of the basalt composite fiber exterior wall panels and the metal curtain wall thermal insulation integrated exterior wall panels is 1 / 100. It can be seen that the maximum horizontal allowable deformation of the two basalt composite fiber exterior wall panels and the two metal curtain wall thermal insulation integrated exterior wall panels is greater than the above-mentioned main structure interlayer deformation (interlayer displacement angle) =1 / 750. That is, the current effective candidate product library includes two basalt composite fiber exterior wall panels and two metal curtain wall insulation integrated exterior wall panels.

[0062] S4. Define a multi-objective optimization function; this embodiment uses a multi-objective optimization function of cost, procurement cycle and carbon emissions: , that is, m=3.

[0063] S5. Perform a prefabricated exterior wall panel selection calculation in the valid candidate product library according to the multi-objective optimization function, and select the prefabricated exterior wall panel type corresponding to the minimum value of the multi-objective optimization function: Among them, the first type of prefabricated exterior wall panel is: basalt composite fiber exterior wall panel, with a cost of 135,000 yuan, a procurement cycle of 1.5 months, and carbon emissions of 24.3t; The second type of prefabricated exterior wall panels is: basalt composite fiber exterior wall panels, with a cost of 123,000 yuan, a procurement cycle of 2.5 months, and carbon emissions of 34 tons; The third type of prefabricated exterior wall panel is: metal curtain wall insulation integrated exterior wall panel, with a cost of 154,000 yuan, a procurement cycle of 2.5 months, and a carbon emission of 35 tons; The fourth type of prefabricated exterior wall panel is: metal curtain wall insulation integrated exterior wall panel, with a cost of 165,000 yuan, a procurement cycle of 3 months, and a carbon emission of 45t; According to the actual status of the project or historical experience, subjective weights ωi are assigned to different targets, with the cost weight being 0.5, the procurement cycle weight being 0.3, and the carbon emission weight being 0.2.

[0064] In addition, since the dimensions of the three target are different, the data of each target are standardized. The standardization methods include a variety of mature mathematical methods such as range standardization and soft maximum standardization. The specific methods of standardization will not be repeated here.

[0065] Among them, the parameters of the four types of prefabricated exterior wall panels after standardized processing are: The first type of prefabricated exterior wall panel has a cost parameter of 0.2340, a procurement cycle parameter of 0.1579, and a carbon emission parameter of 0.1757; The cost parameter of the second type of prefabricated exterior wall panels is 0.2132, the procurement cycle parameter is 0.2632, and the carbon emission parameter is 0.2458; The cost parameter of the third type of prefabricated exterior wall panels is 0.2669, the procurement cycle parameter is 0.2632, and the carbon emission parameter is 0.2531; The fourth type of prefabricated exterior wall panel has a cost parameter of 0.2860, a procurement cycle parameter of 0.3158, and a carbon emission parameter of 0.3254.

[0066] The ideal solution vector is (0.2232, 0.1579, 0.1757), and its corresponding physical meaning is an ideal state (which does not actually exist) with a construction cost of 123,000 yuan, a procurement cycle of 1.5 months, and carbon emissions of 24.3 tons.

[0067] According to the multi-objective optimization function of cost, procurement cycle and carbon emissions, the data of each type of prefabricated exterior wall panel product are substituted into the multi-objective optimization function for calculation and solution. The function value of the first type of prefabricated exterior wall panel is 0.036, the function value of the second type of prefabricated exterior wall panel is 0.083, the function value of the third type of prefabricated exterior wall panel is 0.068, and the function value of the fourth type of prefabricated exterior wall panel is 0.109. The prefabricated exterior wall panel type with the smallest function value is selected as the first type of prefabricated exterior wall panel. The first type of prefabricated exterior wall panel is: basalt composite fiber exterior wall panel, with a cost of 135,000 yuan, a procurement cycle of 1.5 months, and carbon emissions of 24.3t.

[0068] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for selecting prefabricated exterior wall components for seismic isolation prefabricated buildings based on performance synergy, characterized in that: The following steps are involved: S1. Obtain the main structure plan and seismic isolation plan of the building; S2. Establish a seismic isolation analysis model of the main structure of the building through structural analysis software; S3. Call the structural analysis software to output the numerical simulation calculation results of the core indicators of the seismic performance of the main structure, build a multi-objective optimization selection library for prefabricated exterior wall panels, select the type of prefabricated exterior wall panels that meet the seismic performance requirements from the multi-objective optimization selection library according to the numerical simulation calculation results, and then establish an effective candidate prefabricated exterior wall panel library, wherein the numerical simulation calculation results are interlayer deformation; S4. define a multi-objective optimization function; S5. Performing a selection calculation of prefabricated exterior wall panels in a valid candidate product library according to the multi-objective optimization function, and selecting a prefabricated exterior wall panel type corresponding to a minimum value of the multi-objective optimization function.

2. The method for selecting prefabricated exterior wall components for seismic isolation prefabricated buildings based on performance synergy according to claim 1 is characterized in that: In step S3, the method of selecting the type of prefabricated exterior wall panel that meets the seismic performance requirements from the multi-objective optimization selection library according to the numerical simulation calculation results includes: selecting the maximum allowable horizontal deformation in the multi-objective optimization selection library Greater than the interlayer deformation of the main structure Prefabricated exterior wall panel type x.

3. The method for selecting prefabricated exterior wall components of a seismic isolation prefabricated building based on performance synergy according to claim 1 is characterized in that: The ideal point method formula of the multi-objective optimization function is: ;in, is the i-th objective function of prefabricated exterior wall panels, is the type of prefabricated exterior wall panel in the i-th objective function, ω i is the weight coefficient of the i-th objective function, is the ideal value of the i-th objective function, m is the number of optimization objectives, is the distance between the actual value and the ideal value of the objective function of the prefabricated exterior wall panel type x.

4. The method for selecting prefabricated exterior wall components for seismic isolation prefabricated buildings based on performance synergy according to claim 1 is characterized in that: It also includes step S6. If a prefabricated exterior wall panel that meets the seismic performance requirements cannot be selected from the valid candidate prefabricated exterior wall panel library, the main structure plan and seismic isolation plan of the building are adjusted, and steps S2-S5 are repeated to select the prefabricated exterior wall panel type corresponding to the minimum value of the multi-objective optimization function at this time.

5. The method for selecting prefabricated exterior wall components of a seismic isolation prefabricated building based on performance synergy according to claim 1 is characterized in that: The optimization objectives of the prefabricated exterior wall panels include at least one of cost, procurement cycle, carbon emissions and installation efficiency.

6. A prefabricated exterior wall component selection system for seismic isolation prefabricated buildings based on performance synergy, characterized by: include: The scheme acquisition module is used to obtain the main structure scheme and seismic isolation scheme of the building; A model building module, connected to the scheme obtaining module, is used to establish a main structure seismic isolation analysis model of the building based on the main structure scheme and seismic isolation scheme of the building; A simulation calculation module, connected to the model building module, is used to calculate and output numerical simulation calculation results of core indicators of the seismic performance of the main structure based on the seismic isolation analysis model of the main structure; A comparison and screening module, connected to the simulation calculation module, is used to compare the core indicators of the seismic performance of the current prefabricated exterior wall panels with the numerical simulation calculation results, and screen out prefabricated exterior wall panels that meet the seismic performance requirements from the multi-objective optimization selection library, thereby establishing an effective candidate prefabricated exterior wall panel library; The optimization calculation module is connected to the comparison and screening module and is used to perform prefabricated exterior wall panel selection calculation from a valid candidate prefabricated exterior wall panel library based on a multi-objective optimization function, and then select the prefabricated exterior wall panel type corresponding to the minimum value of the multi-objective optimization function.

7. The prefabricated exterior wall component selection system for seismic isolation prefabricated buildings based on performance synergy according to claim 6 is characterized by: The method by which the comparison and screening module selects prefabricated exterior wall panels that meet the seismic performance requirements from the multi-objective optimization selection library includes: Select the maximum allowable horizontal deformation in the multi-objective optimization selection library Greater than the interlayer deformation of the main structure Prefabricated exterior wall panel type x.

8. The prefabricated exterior wall component selection system for seismic isolation prefabricated buildings based on performance synergy according to claim 6 is characterized by: The ideal point method formula of the multi-objective optimization function of the optimization calculation module is: ,in, is the i-th objective function of prefabricated exterior wall panels, is the type of prefabricated exterior wall panel in the i-th objective function, ω i is the weight coefficient of the i-th objective function, is the ideal value of the i-th objective function, m is the number of optimization objectives, is the distance between the actual value and the ideal value of the objective function of the prefabricated exterior wall panel type x.

9. The prefabricated exterior wall component selection system for seismic isolation prefabricated buildings based on performance synergy according to claim 7 is characterized in that: It also includes a judgment and adjustment module, which is respectively connected to the comparison and screening module and the scheme acquisition module. The judgment and adjustment module is used to judge whether the type of prefabricated exterior wall panels that meets the seismic performance requirements is selected. If it is determined that the type of prefabricated exterior wall panels that meets the seismic performance requirements is not selected, the judgment and adjustment module adjusts the main structure scheme and seismic isolation scheme of the building in the scheme acquisition module.

10. The prefabricated exterior wall component selection system for seismic isolation prefabricated buildings based on performance synergy according to claim 7 is characterized in that: The optimization target of the optimization calculation module includes at least one of cost, procurement cycle, carbon emission and installation efficiency.

Images