CN112329086B - Intelligent optimization system and method for flue duct structure - Google Patents
Intelligent optimization system and method for flue duct structure Download PDFInfo
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Abstract
The invention discloses an intelligent optimization design system and method for a smoke air duct structure, which comprises the following steps: the intelligent modeling module is embedded with various types of smoke air duct structure model templates; the intelligent computing module is used for carrying out system optimization and component section optimization on each system mode by adopting a steel structure optimization method and carrying out iterative optimization computation on the structure of the smoke air duct; the intelligent post-processing module is used for integrating the calculation results and judging the safety and the economical efficiency of the structure; the intelligent drawing module is used for carrying out template formation and parameterized drawing customization on the engineering drawing of the smoke air duct structure, and automatically drawing and editing the drawing; the intelligent calculation module performs model iterative optimization calculation and comprehensive judgment when the display indexes do not meet according to the judgment result, stops performing iteration until the indexes all meet, and outputs a smoke and air duct structure model with the minimum steel quantity as a final modeling result; and when the judgment results show that the indexes are all met, directly outputting the flue structure model with the minimum steel quantity as a final modeling result.
Description
Technical Field
The invention relates to the technical field of computers and the field of steel structure design, in particular to an intelligent optimization system and method for a smoke air duct structure.
Background
The smoke, air and coal powder pipeline (flue duct for short, six ducts) of the thermal power plant in China comprises a flue, a cold air duct, a hot air duct, a raw coal pipeline, a powder making pipeline and a powder conveying pipeline, and is an important structure for ensuring the safe operation of the power industry. The structure also widely exists in other industries such as steel, petroleum, chemical industry, civil use and the like.
The smoke duct is generally divided into a horizontal smoke duct, a vertical smoke duct, an inclined smoke duct and the like according to the arrangement form. The flue duct structure can be divided into two structural forms of a rectangle and a circle according to the cross section shape. The connecting parts between the smoke and air duct structural members or with other equipment are also provided with different connecting members such as elbows, truncated pyramids, circular truncated cones and the like.
In the smoke air duct structure, structural components mainly comprise a duct body, stiffening ribs, inner support rods, supports and other components, and structural stress mainly comprises internal pressure, accumulated dust, wind load, snow load, earthquake load, temperature load and other structural loads. The structural design of the flue gas duct mainly comprises the design technical rules of flue gas duct coal powder duct of thermal power plant, the design and calculation method of the design technical rules of flue gas duct coal powder duct of thermal power plant, the design technical regulations of steam water duct of thermal power plant, the calculation technical regulations of steam water duct stress of thermal power plant, the design regulations of oil gas duct of thermal power plant, the structural design regulations of flue gas duct of tubular furnace of petrochemical industry, the design technical regulations of ventilation duct, the design regulations of industrial metal duct, and the like
The mechanical properties of the flue gas duct structure material are greatly changed under different engineering conditions, the stress condition is relatively complex, the basis commonly adopted in the design of the flue gas duct structure in China is 'flue gas duct pulverized coal pipeline design technical specification of a thermal power plant' and 'flue gas duct pulverized coal pipeline design technical specification matched design calculation method of the thermal power plant', a relatively simplified design method is adopted, a plurality of design units adopt EXCEL table form for structural calculation according to the specification, according to the conventional design method, the stress performance of the flue gas duct structure rod piece cannot be completely shown, the span setting of the flue gas duct structure is also subjected to relatively harsh limitation in the specification, and the limitation is relatively conservative in structural stress. The design of the conventional design method for the smoke air duct structure has the problems of long time, low efficiency, high manufacturing cost and the like. Because the degree of each designer's mastering the specifications is different, safety redundancy and safety bottleneck phenomena are easy to occur in engineering projects.
In recent years, with the wide application of large finite element calculation software, some designers adopt finite element calculation programs such as ANSYS and the like to carry out calculation design on a smoke air duct structure, and other designers carry out secondary development on the smoke air duct structure on the large finite element calculation programs, but the developed calculation packages are basically developed by parametric modeling programs, the parametric modeling secondary development programs do not relate to the aspects of subsequent optimization calculation, calculation result post-processing, automatic drawing and the like, and the aspects of modeling, calculation, post-processing, drawing and the like also depend on the combination of platform programs, and do not have the combination of deeper intelligent linkage. It can be said that, the results of the calculation package developed by the existing researchers are lack of intelligence in the design of the smoke duct structure, and even in the parameterized modeling program of the existing calculation package, the calculation package also lacks corresponding functions in the aspects of the material mechanical property, the high-temperature calculation principle and the like of the smoke duct structure.
Based on the prior art background of flue gas duct structural design calculation, we have developed flue gas duct structural intelligent optimization design system, this system contains intelligent modeling, intelligent calculation, intelligent aftertreatment, four big modules of intelligent drawing, four big intelligent module inter-links, realized flue gas duct structural scheme computer automatic optimization's function and can draw fast, the problem among the prior art has been solved comprehensively, flue gas duct structural design computational efficiency promotes by a wide margin, engineering security and economic nature have obtained fine balance.
Disclosure of Invention
The invention aims to provide an intelligent optimization system and method for a smoke air duct structure, and aims to solve the problems in the prior art.
The invention provides an intelligent optimization design system of a smoke air duct structure, which is based on the existing large finite element software computing platform, wherein the large finite element software computing platform can be a PKPM software platform, and can also be other large finite element computing software platforms such as STAAD. The intelligent optimization design system of the smoke and air duct structure comprises an intelligent modeling module, an intelligent computing module, four modules such as an intelligent post-processing module and an intelligent drawing module, the intelligent optimization design system of the smoke and air duct structure aims at safety and economy, the four modules take safety indexes and economic indexes as a whole, the intelligent modeling module is automatically called, the three modules of the intelligent optimization computing module and the intelligent post-processing module are automatically adjusted by a computer, a final engineering model which is safe and economical is obtained in an iteration optimization position, the intelligent drawing module is called again, and construction drawings are automatically drawn. The intelligent optimization design system for the smoke air duct structure essentially adopts a core finite element calculation program of the current commercial large finite element calculation software, but the intelligent optimization design system for the smoke air duct structure encapsulates and links manual work at each stage when a designer routinely utilizes the large finite element calculation software to carry out calculation design of the smoke air duct structure, particularly carries out computerized iterative optimization processing on manual complicated work which is used for routinely and continuously carrying out structural model adjustment on the smoke air duct structure, carries out automatic computer calculation adjustment for deepening the manual adjustment work of the structural model of the designer for a plurality of times to dozens of times and hundreds of times, greatly improves the depth and precision of optimization adjustment, greatly reduces the work of the designer, and realizes the intellectualization of the optimization design of the smoke air duct structure.
The safety indexes mainly refer to integral safety indexes and component safety indexes which are required to be met by the engineering model according to the specifications of stress ratio, displacement and the like, the intelligent optimization design system of the flue structure requires that each comparable engineering model is safe, and the final model obtained through iterative optimization is also safe without manual model adjustment.
The economic index mainly refers to the volume steel consumption or area steel consumption index of the flue gas duct structure, in the iterative optimization process, each model is continuously optimized and adjusted on the premise that the whole model and the local model components meet the safety requirement, then the whole steel consumption is compared, the economic index, namely the model with the optimal steel consumption is selected as the final model according to the optimization times set in the parameters, or the flue gas duct structure model with the minimum steel consumption is optimized according to the set steel consumption index.
And the intelligent modeling module is connected with the intelligent optimization calculation module, the intelligent post-processing module and the intelligent drawing module and is used for the initialization parameter modeling of the flue structure. The flue gas air duct structure can be divided into a horizontal flue and a vertical flue on the whole for a designer to select or check, and each engineering type is provided with a rectangular flue and a circular flue for the designer to select. The intelligent modeling module is provided with a plurality of parameterization menus, and the menus are used for parameterizing the shapes, materials, stiffening ribs, support settings, supports, loads and engineering conditions of detailed components such as a vertical flue, a horizontal flue, an elbow and the like through various specific parameters. After the parameter menus are filled, a smoke air duct structure calculation model can be generated by one key, the structure model embeds contents such as engineering condition information, material information, detail component information, load information and the like in the intelligent modeling menu, and the structure calculation can be directly carried out. After the intelligent modeling module fills in the parameters, the intelligent modeling module can not only form a model by one key, but also manually modify and edit. The intelligent modeling module is connected with the following intelligent calculation, intelligent post-processing and intelligent drawing. The intelligent modeling module is mainly connected with the intelligent calculation and intelligent post-processing module through optimization measures such as component section change and system change, and the intelligent modeling module is mainly connected with the intelligent drawing module through component information and the like.
An intelligent optimization calculation module which is connected with the intelligent modeling module and the intelligent post-processing module, when the intelligent parameterized model structure calculation judgment result shows that the safety index and the steel index are not satisfied, the intelligent modeling module is called to carry out model iterative optimization calculation (by methods such as automatic component section adjustment, system adjustment and the like), then the intelligent post-processing module is called to carry out comprehensive judgment until the judgment result of the intelligent post-processing module is that the safety index and the steel index are both satisfied, stopping iterative optimization calculation, finally comparing the steel consumption of the smoke air duct structure models of all system modes, and when the judgment result shows that the safety index and the steel consumption index are both met, comparing the steel consumption of the flue structure models of all system modes, directly outputting the flue structure model with the minimum steel consumption as a final modeling result, and endowing the iteratively optimized component and system with the final model. During calculation, the intelligent calculation module can perform allowable stress method structure calculation based on a flue duct design rule and limit state method structure calculation based on a steel structure according to the needs of designers to select.
And the intelligent post-processing module is used for integrating the calculation result of the intelligent modeling module and the model calculation result after each iterative optimization in the optimization process, judging the integrated result of all the smoke duct structure models according to the safety index and the steel index which are input in advance, inputting the judgment result into the intelligent modeling and intelligent optimization calculation module, performing automatic intelligent optimization calculation after performing combined modification on the member sections in the engineering model according to the post-processing calculation result on the premise of safety, and finally achieving the effect that all the member sections under each structure system in the engineering model reach the optimal value on the premise of safety, so that the steel consumption of the whole engineering model reaches the minimum. The intelligent post-processing module performs combined trial calculation for one time according to the optimization times set in the intelligent optimization calculation stage, converges the structural model of the optimal steel quantity result on the final safety premise to the intelligent modeling module for shaping, and outputs the calculation result of the shaped model, wherein the calculation result is a calculation model calculation book on the safety premise;
and the intelligent drawing module is connected with the intelligent optimization calculation module and the intelligent post-processing module and is used for automatically customizing and drawing according to the calculation and post-processing results based on the existing steel structure software calculation platform, and the functional module can automatically draw and intelligently jigsaw the calculation results in a single line diagram form and automatically select a node full-page construction drawing according to the parameterized content.
In order to ensure the model safety calculated by the iterative optimization of the intelligent optimization design system of the smoke air duct structure, the structural model of the system can also be converted into other large-scale finite element calculation platforms which are not the finite element calculation software at the bottom layer of the system for calculation and comparison, after the structural model is converted into other finite element calculation software structural models, other finite element calculation software is entered, the converted model is calculated after the adjustment of steel structure materials, combination information and design information, and the calculation result is compared with the model calculation result of the intelligent optimization design system of the smoke air duct structure. And the designer adjusts the final calculation result according to the comparison result to carry out engineering use.
The intelligent optimization design system of the smoke and air duct structure can be further expanded into an intelligent optimization design system of other structures, if only a vertical flue option is selected in the intelligent optimization design system of the smoke and air duct structure, the smoke and air duct structure can be adjusted into a steel structure box tank or a steel bin structure through parameter adjustment of an intelligent modeling module.
The invention provides an intelligent optimization method of a smoke air duct structure, which is used for an intelligent optimization system of the smoke air duct structure, and the method specifically comprises the following steps:
step 1, carrying out parameter setting on modeling and calculation of the smoke air duct structure. And performing single-selection or multiple-selection on the engineering types in the horizontal smoke and air duct and the vertical smoke and air duct, and then performing single-selection in the rectangular smoke and air duct and the circular smoke and air duct. And then carrying out the setting of parameters such as engineering conditions, shapes, loads, materials, initial sections of components and the like of the flue gas channel. One key forms an engineering structural model.
And setting parameters of the optimization calculation module, and setting optimization calculation limiting conditions of the flue structure.
Step 2, calling a software computing platform to perform large finite element computing program to perform structural computing on the modeling result obtained in the step 1, obtaining a computing result, integrating the computing result of the intelligent modeling module, judging the integrated result of all the flue structure models according to a safety index and a steel index which are input in advance, and obtaining a judgment result;
step 3, when the judgment result shows that the safety index and/or the steel using index are not satisfied, executing step 2 to perform iterative optimization calculation and comprehensive judgment, stopping iteration until the judgment result shows that the safety index and the steel using index are both satisfied, comparing the steel using amount of the flue structure models of all models according to the calculation result, and outputting the flue structure model with the minimum steel using amount as a final modeling result; and when the judgment result shows that the safety index and the steel consumption index both meet, comparing the steel consumption of the flue structure models of all the calculation results according to the calculation results, and directly outputting the flue structure model with the minimum steel consumption as a final modeling result. According to the optimization times set in the step 1, when the optimization times exceed the set times and still cannot meet the requirements of the safety index and the economic index, the optimization calculation is stopped, and manual intervention is carried out. And when the actual optimization times are less than the set times and the safety index and the economic index are both met, the optimization can be continued or quit in advance.
And 4, automatically drawing the construction drawing of the flue gas duct structure according to the final calculation model and the calculation result determined in the step 3, wherein the automatic drawing comprises an automatic jigsaw function.
And 5, after the smoke air duct structure intelligent optimization system is adopted to carry out the smoke air duct structure optimization design, the final calculation model can also be converted into other large-scale finite element software calculation models to carry out calculation result comparison.
By adopting the embodiment of the invention, the steel structure of the flue structure is safe, the design period is short, and the steel index is excellent.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a smoke duct configuration of an embodiment of the present invention;
FIG. 2 is a schematic diagram of an intelligent optimization system for a flue duct structure according to an embodiment of the invention;
fig. 3 is a flowchart of an intelligent optimization method for a smoke duct structure according to an embodiment of the present invention.
Detailed Description
In the process of realizing the invention, the inventor carries out design optimization research aiming at the flue structure and summarizes corresponding result conclusions, and the research results are applied to the invention to develop an optimization calculation and drawing system aiming at the flue structure on large finite element calculation software platforms such as PKPM, STAAD.pro, SAP2000, MIDAS and the like popular at home and abroad.
The embodiment of the invention carries out two developments on the basis of popular calculation software such as PKPM, STAAD.pro, SAP2000, MIDAS and the like, namely, the software is still adopted for calculation during calculation, the structure of the smoke and air duct is calculated and parameterized, and the smoke and air duct structure optimization design system software which takes the steel index used in unit volume or the steel index used in unit area as the economic index judgment standard and has the functions of intelligent modeling, intelligent calculation, intelligent post-processing and intelligent plotting is formed on the premise of safety.
The technical scheme of the embodiment of the invention is mainly designed aiming at a plurality of smoke air channel structure design modes such as a vertical smoke air channel, a horizontal smoke air channel, a rectangular smoke air channel, a circular smoke air channel and the like, the smoke air channel structure is calculated and parameterized, the effect of finally determining the optimal scheme can be achieved by comparing steel results of all the smoke air channel structures according to the smoke air channel structure parameters, and the optimal calculation is carried out according to the determined scheme and the optimal scheme is automatically drawn by software.
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the modules can be directly connected or indirectly connected through an intermediate medium, and information inside the two modules can be communicated. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
System embodiment
According to an embodiment of the present invention, an intelligent optimization system for a smoke duct structure is provided, fig. 1 is a schematic diagram of a type of the smoke duct structure according to the embodiment of the present invention, and fig. 2 is a schematic diagram of the intelligent optimization system for the smoke duct structure according to the embodiment of the present invention, wherein 1-the type of the smoke duct structure; 11-horizontal flue duct; 11-1-rectangular flue duct; 11-2-round flue duct; 12-vertical flue ducts; 12-1-a rectangular flue duct; 12-2-round flue duct;
2-judging the index; 21-safety index; 22-economic index
3-a smoke air duct intelligent optimization design system; 31-an intelligent modeling module; 32-an intelligent computing module;
33-Intelligent post-processing Module 34-Intelligent drawing Module
31-1-engineering condition parameterization menu; 31-2-menu of parameterization of mechanical properties of materials;
31-3-load parameterization menu; 31-4-shape parameterization menu; 31-5-system parameterization menu;
31-6-component section parameterization menu; 31-7-manual modeling parameterization menu;
31-8-modify edit parameterization menu
32-1-design parameterization menu; 32-2-library of component optimized cross sections; 32-3-intelligent and manual grouping menu; 32-4-optimized computation parameterization menu; 33-1-detailed calculation results information menu; 33-2-model optimization safety conclusion and main index statistical menu; 33-3-model optimization of economic indicators; 33-4-computer book; 34-1-general description of construction drawings; 34-2-plan view; 34-3-elevation view; 34-4-sectional view; 34-5-expanded view; 34-6-typical node graph; 34-7-materials table; 34-8-Intelligent automatic jigsaw menu
As shown in fig. 1 and 2, the intelligent optimization system for a smoke duct structure according to the embodiment of the present invention specifically includes:
the intelligent optimization system of the smoke air duct structure is formed by secondary development on large-scale finite element calculation software such as PKPM, SAP2000, STAAD.
The smoke and air channel structure 1 comprises a horizontal flue 11, a vertical flue 12, and rectangular flues 11-1 and 12-1 and circular flues 11-2 and 12-2 which are respectively subdivided.
The optimization judgment indexes of the intelligent optimization design system of the flue structure are divided into a safety index 21 and an economic index 22.
The intelligent optimization design system for the smoke and air duct structure comprises an intelligent modeling module 31, an intelligent computing module 32, an intelligent post-processing module 33 and an intelligent drawing module 34.
The safety index 21 and the economic index system 22 generally adopt four intelligent modules 31, 32, 33 and 34, and are the key for judging the optimization standard of the intelligent optimization design system of the smoke air duct structure.
The intelligent modeling module 31 comprises a smoke air duct structure engineering condition parameterization menu 31-1, a material mechanical property parameterization menu 31-2, a load parameterization menu 31-3, a shape parameterization menu 31-4, a system parameterization menu 31-5, a component section parameterization menu 31-6, a manual modeling menu 31-7, a model manual modification editing menu 31-8 and the like.
The intelligent optimization calculation module 32 comprises a design parameter parameterization menu 32-1, a component optimization section library 32-2, an intelligent and manual grouping menu 32-3, an optimization calculation parameterization menu 32-4 and the like.
The intelligent post-processing module 33 comprises a detailed calculation result information menu 33-1, a model optimization safety conclusion and main index statistical menu 33-2, a model optimization economic index 33-3, a calculation book 33-4 and the like. The 33-2 and 33-3 modules in the post-processing module are extracted and compared with the above-mentioned general indexes 21 and 22, respectively.
The intelligent drawing module 34 comprises a construction drawing general description 34-1, a plan view 34-2, an elevation view 34-3, a cross-sectional view 34-4, an expansion view 34-5, a typical node view 34-6, a material table 34-7, an intelligent automatic mosaic menu 34-7 and the like of the smoke duct structure.
The intelligent modeling module 31, the intelligent optimization calculation module 32, the intelligent post-processing module 33 and the intelligent drawing module 34 are connected in an associated manner.
The core parameters of the intelligent modeling module 31 are the operating temperature and the steel type in the material mechanical property parameterization menu 31-2 and the shape parameters (such as length, width, height, support setting, stiffening rib setting and the like) of the flue structure in the shape parameterization menu 31-4, and other parameterization menu systems are provided with default values which can be modified according to the specific conditions of the project. After the core parameters are input, the engineering structure model can be automatically formed by one key, and when the parameter menus in the subsequent intelligent optimization calculation module 32, the intelligent post-processing module 33 and the intelligent drawing module 34 also adopt system default values, the engineering can also integrate modeling, calculation, post-processing and drawing after the core parameters are input, so that the construction drawing is formed by one key. After the intelligent modeling module 31 forms a model, the model enters an intelligent optimization calculation module to perform model finite element calculation. The intelligent modeling module 31 further performs continuous modification of parameters in the modeling module to form a new structural model according to the judgment result formed by the intelligent post-processing module 33, and the new structural model enters the intelligent optimization calculation module 32 for calculation. The intelligent modeling module 31 will also call the section library in the intelligent optimization calculation module 32 to automatically and continuously adjust the section of the model component in the process of adjusting the model.
And the intelligent optimization calculation module 32 is used for performing optimization calculation on the model formed by the intelligent modeling module 31 after setting according to various parameterized menus in the optimization calculation module. The intelligent optimization calculation module 32 also calls and calls the intelligent modeling module 31 and the component library 32-2 thereof for many times according to the calculation judgment result formed by the intelligent post-processing module 33 to adjust the parameters of the model to form a new model, and then carries out structural calculation. The intelligent optimization calculation module 32 continuously performs mutual correlation calling on the intelligent modeling module 31, the intelligent optimization calculation module 32 and the intelligent post-processing module 33 according to the iterative optimization setting of the self-optimization parameterization menu 32-4 until a final structure model meeting optimization requirements is formed.
The intelligent optimization calculation module 32 is a key module in the four intelligent modules, when the judgment result of the intelligent post-processing module 33 shows that the safety index and/or the steel index are not satisfied, the intelligent modeling module 31 is called to form a new model, the self module 32 is called to perform model iteration optimization calculation, the intelligent post-processing module 33 is called to perform comprehensive judgment, and the iteration is stopped until the judgment result of the intelligent post-processing module 33 shows that the safety index and the steel index are both satisfied. Comparing the steel consumption of the flue structure models of all system modes according to the parameters, and outputting the flue structure model with the minimum steel consumption as a final modeling result; and when the judgment result shows that the safety index and the steel consumption index both meet, comparing the steel consumption of the flue structure models of all system modes according to the parameters, and directly outputting the flue structure model with the minimum steel consumption as a final modeling result. In the embodiment of the invention, the number of iterations is set manually as a parameter, and is generally 5-10 times. After the iteration is completed, if the judgment result shows that the safety index and/or the steel index are not met, the intelligent optimization calculation module 32 prompts manual intervention.
When the intelligent optimization calculation module 32 performs iterative optimization calculation, the optimization calculation method specifically includes two categories, namely system optimization and local optimization, the system optimization is divided into a system mode based on a flue and air duct design rule (a system mode with transverse stiffening ribs as main modes) and a system mode based on a civil structure (a system mode with longitudinal stiffening ribs as main modes), and the local optimization includes component section optimization, support setting optimization, node rigid hinge optimization and the like.
The intelligent post-processing module 33 forms a result information menu 33-1 according to each calculation result formed by the intelligent optimization calculation module 32, the intelligent post-processing module collects and compares information of the result information menu 33-1 according to the standard rule and the design parameter 32-1, collects and compares the overall calculation results of the structural model, such as the total vertex displacement, the earthquake type and the like, and feeds back the results to the intelligent optimization calculation module 32 to continue model adjustment iterative calculation until the overall safety index of the model is met if the overall safety index of the model is not met. And when the overall safety index of the model is met, performing next step of local comparison of the model, wherein the local comparison mainly refers to that the stress ratio, the deflection displacement and the like of the component need to meet relevant setting requirements of a standard rule, a design parameter menu 32-1 and the like. If the local safety indexes of the model are also met, the safety indexes of the structural model are all met, and a model optimization safety conclusion and main index statistical menu 33-2 of each safety model is formed. Comparing the model safety index 33-2 with the safety judgment index 21 of the smoke and air duct structure optimization design system, counting the steel consumption of the smoke and air duct structure on the premise that the model safety index 33-2 meets the overall safety judgment index 21 in the optimization process to form a model optimization economic index 33-3 of the smoke and air duct structure, namely forming a steel consumption index per unit volume or a steel consumption index per unit area, comparing the model optimization economic index 33-3 with the smoke and air duct intelligent optimization economic index 22, if 33-3 meets the requirement of the overall economic index 22, the optimization is successful, and if not, repeatedly calling the intelligent modeling module 31, the intelligent optimization calculation module 32 and the intelligent post-processing module 33 to perform model iterative optimization calculation again until the safety index 33-2 and the model optimization economic index 33-3 both meet the overall safety judgment index 21 of the smoke and air duct structure optimization design system And the overall economic indicator 22. When the optimization calculation is successful, a calculation book 33-4 is formed, the calculation book 33-4 is formed on the basis of the result information menu 33-1, and the calculation book is customized and formed according to the calculation book achievement of the large finite element calculation software platform and the characteristics of the engineering of the smoke air duct structure and the like, and mainly comprises the contents of engineering information, design parameter setting, load parameter setting and load diagram, overall optimization calculation results (overall safety indexes and overall economic indexes), detailed optimization calculation results and the like.
The intelligent drawing module 34 is a module for customizing construction drawings of a finally optimized structural model on the basis of an intelligent modeling module 31, an intelligent optimization calculation module 32 and an intelligent post-processing module 33, the module depends on the drawing function of the original large finite element calculation software and is customized and developed on the basis, the functional computer automatically filters unnecessary drawings provided in the drawing function of the original finite element calculation software, and construction drawings such as a construction drawing general description 34-1, a plan view 34-2, an elevation view 34-3, a section view 34-4, an expansion view 34-5, a typical node drawing 34-6 and a material table 34-7 which accord with the structural characteristics of a flue gas duct are automatically formed, and the construction drawings are developed through a program and are set in an intelligent automatic jigsaw menu 34-8, so that the construction drawings have automatic default naming, And functions of automatic default marking, automatic editing and the like can form the final construction drawing without manual editing or with a small amount of editing.
The above-described technical means of the embodiments of the present invention will be described in detail below.
In the embodiment of the invention, the experience steel index input by an expert user can be used as a parameter for software economy comparison in each calculation result, and the system judges whether the structural arrangement scheme of the flue gas duct is subjected to iterative optimization calculation according to the steel index. The iterative optimization calculation mainly involves three modules, namely an intelligent modeling module 31, an intelligent calculation module 32 and an intelligent post-processing module 33. And calling the intelligent drawing module after the iterative optimization calculation meets the requirement.
The intelligent modeling module 31, the intelligent optimization calculation module 32 and the intelligent post-processing module 33 are closely connected, and the modules are mutually associated and mutually independent, so that the system integration optimization modeling calculation is conveniently applied and the system optimization is applied to other existing models which are not modeled by the program.
The intelligent modeling module 31 considers the cheapness of rod optimization and system optimization in the modeling stage and leaves option parameters of program automatic iteration for the intelligent optimization calculation module 32, the intelligent modeling module 31 can mainly consider means which have great influence on steel utilization results, such as rod optimization, support setting optimization, node rigid hinge optimization and the like, and the rod optimization can be used for carrying out parameterized and intelligentized selection of a rod library according to established selection rules on the basis of the existing large finite element calculation software (such as PKPM).
The intelligent optimization calculation module 32 is mutually connected with the intelligent modeling module 31 and the intelligent post-processing module 33, when the intelligent post-processing module 33 shows that the steel index for safety without problems is not satisfied, relevant parameters of the intelligent modeling module 31 are called to carry out model optimization and recalculate and compare the results of the intelligent post-processing module 33 until the results of the intelligent post-processing module 33 are safe and meet the steel index, and the optimization is declared to be finished, otherwise, after the iterative calculation reaches the set times (generally 5-10 times), the steel index is still not met, and the optimization is declared to fail to enter the manual intervention stage.
The intelligent post-processing module 33 seals up the scattered calculation results and uses the final "satisfied" and "not satisfied" as the basis for judging the security of the structure. The computer book of the intelligent post-processing module 33 is specially made by combining the structural characteristics of the smoke duct on the basis of the functions of the existing large finite element computing software (such as PKPM).
The intelligent drawing module 34 performs a rough processing on the detailed drawing function of the original large finite element calculation software (such as PKPM), that is, each project only shows a vertical section of each layer of plane and item, the drawing is a thick line drawing, a node drawing shows a typical node instead of a detailed drawing node, the drawing is a design drawing convenient for secondary drawing removal of a drawing unit instead of an installation drawing, and more than ten drawings are finally drawn on each item.
In the prior art, a certain smoke air duct structure is designed, the time is about 20 days in the conventional design, the designed steel consumption of a finished product is basically between 80 kilograms per square and 120 kilograms per square, the fluctuation is large, the whole steel consumption is large, the technology is adopted, the design only needs two days, the steel consumption of the finished product is basically between 65 kilograms per square and 90 kilograms per square, the fluctuation is small, and the steel consumption is more economical. The construction period can save more than 80% of workload, and the construction cost is generally saved by more than 15%.
In summary, in the technical solution of the embodiment of the present invention, the flue gas duct is divided into two types (only one of them can be selected) of a rectangular flue and a circular flue, each type is further divided into a system mode based on a flue gas duct design rule (a system mode with transverse stiffeners as main modes) and a system mode based on a civil structure (a system mode with longitudinal stiffeners as main modes), each system is subjected to local component section optimization, an optimal model is selected after the optimization, and the optimal model is compared with another optimal model, and finally an optimal model is selected. And judging the optimal model standard, namely, the structure is safe, and secondly, the volume steel consumption is minimum, so that the effect of one-key optimization design finite element calculation and one-key plotting as the denitration reactor is achieved.
Method embodiment
According to an embodiment of the present invention, an intelligent optimization method for a smoke duct structure is provided, which is used for the above intelligent optimization system for a smoke duct structure, and fig. 3 is a flowchart of the intelligent optimization method for a smoke duct structure according to an embodiment of the present invention, wherein 41-step human-computer interaction; step two, forming a structural model; 43-step three-structure calculation; 44-step four, synthesizing and extracting calculation results; 45-judging safety and economy in the fifth step; 46-intelligent mapping, as shown in fig. 3, the intelligent optimization method for the smoke duct structure according to the embodiment of the invention specifically comprises the following steps:
step one (41), firstly, determining whether the structural type of the flue duct is a rectangular flue duct or a circular flue duct, and selecting one of the rectangular flue duct and the circular flue duct. And secondly, inputting human-computer interaction parameter information of the smoke air duct structure.
And step two (42), according to the content of the step 41, the structure of the smoke duct automatically forms a first system structure model based on the design rule of the smoke duct (and then sequentially forms a second system structure model based on the civil engineering structure and a third system structure model combining the two according to the subsequent steps).
Under the structural model of the first structural system, the structural member section of the smoke and air duct automatically forms the structural member section information of the structural model according to the embedded calculation rule, and the information of each structural member section is automatically parameterized.
And (4) automatically giving the information of the man-machine interaction parameters such as load to the structural model component information according to the content of the step (41) to form a preliminary structural model of the flue structure (the component section information is automatically optimized and adjusted in a component section library according to the subsequent steps).
And step three (43), automatically entering the smoke air channel structure model into an intelligent calculation module for structure calculation according to the contents of the step 41 and the step 42.
The intelligent calculation module encapsulates a series of pre-processed parameter templates, and the parameter templates automatically form calculation design parameters according to the human-computer interaction parameter information in step 41.
The intelligent calculation module encapsulates the load combination formula and the mutual conversion information of the material mechanical property calculation template and the allowable stress method and the extreme state method. In this step, the calculation method and the material mechanical property index used for calculation can be automatically formed according to the man-machine interaction information menu information in step 41.
Step four (44), entering an intelligent post-processing module, integrating the calculation results, judging the integrated results of all the smoke duct structure models according to the safety indexes and steel indexes input in advance in the step 41 by human-computer interaction, and obtaining a judgment result;
step five (45), when the judgment result shows that the safety index and/or the steel consumption index are not satisfied, executing the steps 42 to 45 to perform iterative optimization calculation and comprehensive judgment, stopping iteration until the judgment result shows that the safety index and the steel consumption index are both satisfied, comparing the steel consumption of the flue gas duct structure models of all system modes according to the process parameters, and outputting the flue gas duct structure model with the minimum steel consumption as a final modeling result; and when the judgment result shows that the safety index and the steel consumption index both meet, comparing the steel consumption of the flue structure models of all system modes according to the process parameters, and directly outputting the flue structure model with the minimum steel consumption as a final modeling result.
In step 45, the number of iterations is 5-10; and after the iteration times are finished, if the judgment result shows that the safety index and/or the steel index are not met, prompting manual intervention.
The above-described technical means of the embodiments of the present invention will be described in detail below.
In the embodiment of the invention, the experience steel index input by an expert user can be used as a parameter for software economy comparison in each calculation result, and the system judges whether the smoke duct structure arrangement scheme is subjected to iterative optimization calculation or not according to the steel index. And calling the intelligent drawing module after the iterative optimization calculation meets the requirement.
The embodiment of the invention can integrally optimize modeling calculation and optimize other existing models which are not modeled by the program by using a system.
In step 42, the cheapness of the rod optimization and the system optimization in the modeling stage is considered, the option parameters of program automatic iteration are left, the measures which have great influence on the steel using result, such as rod optimization, support setting optimization, node rigid hinge optimization and the like, can be considered in an important way, and the rod optimization can be used for carrying out parameterized and intelligent rod library selection on the existing basis of PKPM according to the established selection rules.
In step 44, the scattered calculation results of step 43 need to be stored, and the final "satisfied" and "not satisfied" are used as the basis for judging the security of the structure. The computer book of the intelligent post-processing module 33 may be templated for the flue gas duct structure on the existing PKPM computer book function.
And when the result shows that the steel index for safety without problems is not met, executing the steps 42 to 45 to optimize the model, recalculating and judging the result until the judgment result is that the steel index for safety is met, namely the optimization is declared to be finished, or else, after the iterative calculation reaches 5 to 10, failing to declare the optimization of the steel index for safety without problems, entering the manual intervention stage.
Finally, drawing is carried out, in the embodiment of the invention, the detailed drawing function of the original PKPM can be enlarged, namely, each project only shows a vertical section of each layer of plane and item, the drawing is a thick line drawing, the node drawings show typical nodes instead of detailed drawing nodes, the drawing is not an installation drawing but a design drawing convenient for secondary drawing removal of a drawing removal unit, and more than ten drawings are finally drawn for each item.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The intelligent optimization design system of the smoke air duct structure is characterized in that secondary development is carried out based on the existing PKPM and MIDAS large finite element structure calculation software platform, and the system comprises four modules of intelligent modeling, intelligent calculation, intelligent post-processing and intelligent drawing:
the intelligent modeling module is connected with the intelligent computing module, the intelligent post-processing module and the intelligent drawing module and is used for the initialization parameter modeling of the flue structure; the smoke air duct structure can be divided into a horizontal flue and a vertical flue on the whole for a designer to select singly or repeatedly, and each project type also comprises components such as a rectangular flue, a circular flue and the like for the designer to select singly or repeatedly; the intelligent modeling module is provided with a plurality of parameterization menus, and the menus are used for parameterizing the shapes, materials, stiffening ribs, support setting, support seats, load setting and engineering conditions of detailed components such as a vertical flue, a horizontal flue and the like through various specific parameters; after the parameter menus are filled, generating a smoke air duct structure calculation model by one key, embedding engineering condition information, material information, detail component information and load information content in the intelligent modeling menu, and directly performing structure calculation; the intelligent modeling module fills parameters and then forms a model through one key or manually modifies and edits the model; the intelligent modeling module is connected with subsequent intelligent calculation, intelligent post-processing and intelligent plotting, and information is linked; the intelligent modeling module is linked and iteratively optimized with the intelligent calculation and intelligent post-processing module mainly through optimization measures such as component system change, section change and the like, and the intelligent modeling module is connected with the intelligent drawing module mainly through component information and the like;
the intelligent calculation module is connected with the intelligent modeling module and the intelligent post-processing module, when the intelligent parameterized model structure calculation judgment result shows that the safety index and the steel index are not satisfied, calling the intelligent modeling module to perform model iterative optimization calculation through an automatic system adjustment and member section adjustment method, then the intelligent post-processing module is called to carry out comprehensive judgment until the judgment result of the intelligent post-processing module is that the safety index and the steel index are both satisfied, stopping iterative optimization calculation, finally comparing the steel consumption of the smoke air duct structure models of all system modes, when the judgment result shows that the safety index and the steel consumption index are both met, comparing the steel consumption of the flue structure models of all system modes, directly outputting the flue structure model with the minimum steel consumption as a final modeling result, and endowing the iteratively optimized component and system with the final model; during calculation, the intelligent calculation module selects and carries out allowable stress method structure calculation based on a flue duct design rule and limit state method structure calculation based on a steel structure according to the needs of a designer;
the intelligent post-processing module is used for integrating the calculation result of the intelligent modeling module and the model calculation result after each iterative optimization in the optimization process, judging the integrated result of all the smoke duct structure models according to a safety index and a steel index which are input in advance, inputting the judgment result into the intelligent modeling and intelligent optimization calculation module, and performing automatic intelligent optimization calculation after performing combined modification on the member sections in the engineering model according to the post-processing calculation result on the premise of safety to finally achieve the effect that all the member sections under each structure system in the engineering model reach the optimal value on the premise of safety and the steel consumption of the whole engineering model reaches the minimum; the intelligent post-processing module performs combined trial calculation for one time according to the optimization times set in the intelligent optimization calculation stage, links the structural model data of the optimal steel quantity result on the final safety premise to the intelligent modeling module for shaping, and outputs the calculation result of the shaped model, wherein the calculation result is a calculation model calculation book on the safety premise;
and the intelligent plotting module is connected with the intelligent modeling module, the intelligent optimization calculation module and the intelligent post-processing module and used for automatically customizing and drawing according to the calculation and post-processing results based on the existing steel structure software calculation platform, and the functional module can automatically draw the calculation results in a single line diagram form, intelligently map the image and automatically select the node big sample according to the parameterization content to draw the construction drawing.
2. The system of claim 1, wherein the flue duct structure intelligent optimization design system engineering types comprise two engineering types of a horizontal flue duct and a vertical flue duct; furthermore, each project type also comprises two forms of a rectangular flue duct and a circular flue duct; the vertical flue duct and the horizontal flue duct can also form an inclined flue duct form through manual rotation or angle parameter rotation and other editing forms.
3. The system according to claim 1, wherein the intelligent optimization design system for the flue structure is mainly controlled by safety indexes and economic indexes, the safety indexes are mainly indexes such as stress ratio, maximum displacement and frequency, the economic indexes are mainly controlled by steel amount for volume or steel amount for area, and the steel structure optimization method mainly comprises system optimization and rod section optimization.
4. The system according to claim 1, wherein the number of iterations is set according to the precision requirement of the project of the designer, and is generally 5-10 times;
the intelligent computing module is further to: and after the iteration times are finished, prompting manual intervention if the judgment result shows that the safety index or the steel index is not met.
5. An intelligent optimization method for a flue gas duct structure, which is used in the intelligent optimization design system for a flue gas duct structure according to any one of claims 1 to 4, the method specifically comprises:
step 1, carrying out parameter setting on modeling and calculation of a smoke air duct structure, carrying out single selection or multiple selection on engineering types in a horizontal smoke air duct and a vertical smoke air duct, then carrying out single selection on components such as a rectangular smoke air duct and a circular smoke air duct, and then carrying out initial section parameter setting on smoke air duct engineering conditions, shapes, loads, materials and components, and forming an engineering structure model by one key; setting parameters of the intelligent computing module, and setting optimized computing limit conditions of the flue structure;
step 2, calling a large finite element calculation program of a software calculation platform for structural calculation of the modeling result in the step 1, obtaining a calculation result, integrating the calculation result of the intelligent modeling module, judging the integrated result of all the flue structure models according to a safety index and a steel index which are input in advance, and obtaining a judgment result;
step 3, when the judgment result shows that the safety index and/or the steel consumption index are not met, executing step 1 to adjust the section of the component or adjust the system, then executing step 2 to perform iterative optimization calculation and comprehensive judgment, stopping iteration until the judgment result shows that the safety index and the steel consumption index are both met, comparing the steel consumption of the flue gas duct structure models of all models according to the calculation result, and outputting the flue gas duct structure model with the minimum steel consumption as a final modeling result; when the judgment result shows that the safety index and the steel consumption index both meet, comparing the steel consumption of the flue structure models of all the calculation results according to the calculation results, and directly outputting the flue structure model with the minimum steel consumption as a final modeling result; according to the optimization times set in the step 1, when the optimization times exceed the set times and still cannot meet the requirements of the safety index and the economic index, terminating optimization calculation and carrying out manual intervention, and when the actual optimization times do not meet the requirement of the set times and both the safety index and the economic index meet, continuing optimization or quitting in advance;
step 4, automatically drawing the construction drawing of the flue duct structure according to the final calculation model and the calculation result determined in the step 3, wherein the automatic drawing comprises an automatic jigsaw function;
and 5, after the smoke air duct structure is optimally designed by adopting the intelligent smoke air duct structure optimal design system, the final calculation model can be converted into software calculation models of Sap2000, Midas and Staad.
6. The method of claim 5, further comprising:
the four modules of intelligent modeling, intelligent calculation, intelligent post-processing and intelligent drawing are connected with each other, and data information is shared and linked with each other.
7. The method as claimed in claim 5, wherein the engineering information of the member section, the structural system and the like can be automatically adjusted according to the optimization setting requirements after the four modules of intelligent modeling, intelligent calculation, intelligent post-processing and intelligent drawing are set through parameters.
8. The method of claim 5, wherein the intelligent computing module is configured to compute using large finite element calculations.
9. The method of claim 5, wherein the final model of the intelligent optimization design system is further transformed into other large finite element computing software models.
10. The method of claim 5, wherein the intelligent optimization design system and method is further applied to intelligent optimization calculation of containers and silos.
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