Molding process for irregular modeling of petals of curtain wall

Abstract

The invention belongs to the technical field of curtain walls, and particularly relates to a forming process for irregular modeling of curtain wall petals, which comprises the following steps: a designer and a curtain wall engineer closely cooperate, and the modeling of the curtain wall petals is deeply designed by utilizing computer-aided design and computer-aided engineering software based on a building design drawing; the processing technology, the installation sequence and the structural rationality are fully considered, and the feasibility of the design scheme is ensured; performing wind pressure and anti-seismic analysis on the petals of the curtain wall according to the design scheme; and an accurate three-dimensional model of the curtain wall petals is established, and data export is performed on the established three-dimensional model. According to the method, deepening design and digital modeling are carried out by adopting various software, and the structure is simulated, analyzed and optimized by virtue of the three-dimensional model, so that the design precision is ensured, the material waste and the processing difficulty can be reduced, and the high requirement of irregular modeling on the design precision is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of curtain wall, in particular to a forming process of curtain wall petal irregular shape. BACKGROUND

[0002] Curtain wall is the outer wall of the building, which does not bear the weight and hangs like a curtain, so it is also called "curtain wall". It is a light wall with decorative effect commonly used in modern large and high-rise buildings. It is composed of panels and supporting structure system, which can have certain displacement capacity relative to the main structure or certain deformation capacity, and does not bear the main structure.

[0003] With the continuous innovation of architectural design, irregularly shaped curtain walls have gradually become a landmark element of modern architecture. The curtain wall petal irregular shape design aims to create a unique artistic and visual impact building appearance, so that it not only meets the building enclosure function, but also becomes a unique carrier of regional culture and modern aesthetics. However, the processing and installation of irregular shape are much more difficult than that of regular curtain wall, and the traditional process cannot meet the design precision and quality requirements. Therefore, a forming process of curtain wall petal irregular shape is invented. SUMMARY

[0004] In view of the above and / or the problems existing in the prior art, the present application is proposed.

[0005] Therefore, the purpose of the present application is to provide a forming process of curtain wall petal irregular shape, which can solve the problem that the traditional process cannot meet the design precision and quality requirements.

[0006] To solve the above technical problems, according to one aspect of the present application, the present application provides the following technical scheme:

[0007] A forming process of curtain wall petal irregular shape, comprising the following steps:

[0008] S1: The designer and the curtain wall engineer closely cooperate, based on the architectural design drawing, using computer aided design and computer aided engineering software, the shape of the curtain wall petal is further designed, the processing technology, the installation sequence and the structural rationality are fully considered, and the implementability of the design scheme is ensured;

[0009] S2: According to the design scheme, the wind pressure and the anti-seismic analysis of the curtain wall petal are carried out;

[0010] S3: The accurate three-dimensional model of the curtain wall petal is established, and the data of the established three-dimensional model is exported;

[0011] S4: processing the material according to the derived data, including plate cutting, curved surface forming, edge processing and punching, to obtain curtain wall petals;

[0012] S5: treating the surface of the curtain wall petals, including pretreatment and fluorocarbon spraying;

[0013] S6: detecting the quality of the curtain wall petals, including size accuracy inspection, surface quality inspection and mechanical property inspection;

[0014] S7: packaging and transporting the curtain wall petals with qualified quality;

[0015] S8: installing the curtain wall petals on site after transportation.

[0016] As a preferred scheme of the forming process of the irregular shape of the curtain wall petal, the specific steps of S2 are as follows:

[0017] S21: wind pressure analysis of the curtain wall petals;

[0018] S22: anti-seismic analysis of the curtain wall petals;

[0019] The specific steps of S21 are as follows:

[0020] S211: model establishment: using ANSYS or ABAQUS software, according to the actual size, material properties and connection mode of the curtain wall petals, an accurate three-dimensional finite element model is established, for complex curved surfaces, appropriate element types are used to accurately simulate their geometric shape and mechanical behavior, and the element types include shell elements and solid elements;

[0021] S212: loading and boundary conditions: according to local meteorological data and building specifications, the design wind pressure value is determined, the wind pressure is loaded on the outer surface of the curtain wall petals in the form of uniform or non-uniform distribution, and different wind directions are considered, in the model, the connection points of the curtain wall and the main structure are fixed to simulate the actual boundary constraint conditions;

[0022] S213: analysis and result evaluation: through software calculation, the stress, strain distribution and deformation of the curtain wall petals under the action of wind pressure are obtained, the stress concentrated areas are focused on, including the edges of the petals and the connection nodes, to ensure that the stress values in the areas are within the allowable stress range of the material, at the same time, it is checked whether the maximum deformation of the petals meets the design specifications and use requirements, to avoid affecting the sealing and aesthetics of the curtain wall due to excessive deformation;

[0023] The specific steps of S22 are as follows:

[0024] S221: Model establishment and parameter setting: using ANSYS or ABAQUS software, according to the actual size of the curtain wall petal, material properties and connection mode, establish accurate three-dimensional finite element model, consider the dynamic mechanical properties of the material parameters when the earthquake, in addition, according to the seismic fortification intensity of the building, site category and other factors, determine the type and peak acceleration of seismic wave;

[0025] S222: Loading and calculation: load the seismic wave into the model, which uses the bottom input acceleration method to simulate the seismic excitation, respectively, one-way and two-way seismic analysis, to fully evaluate the response of curtain wall petal under different seismic action;

[0026] S223: Result analysis and strength checking: analyze the stress, strain and displacement response of the model under the action of earthquake, evaluate the seismic capacity of curtain wall petal, check whether there is local damage or overall instability, for key parts, including connection node and stress concentration area, carry out detailed strength checking, ensure that the curtain wall structure can maintain its integrity and stability under the design earthquake, meet the requirements of seismic design specification.

[0027] As a preferred scheme of the forming process of the curtain wall petal irregular shape, wherein: the specific steps of S3 are as follows:

[0028] S31: use three-dimensional modeling software, including Rhino, 3ds Max, to establish the accurate three-dimensional model of curtain wall petal, the model needs to contain detailed geometric dimensions, surface information and connection nodes, after the establishment, the model will be simulated and analyzed, the structure of the petal is optimized, the material waste and processing difficulty are reduced;

[0029] S32: convert the three-dimensional model data into a format that can be recognized by numerical control machining equipment, and export the two-dimensional drawing required for machining, mark the detailed dimensions, tolerances and technical requirements.

[0030] As a preferred scheme of the forming process of the curtain wall petal irregular shape, wherein: the specific steps of S4 are as follows:

[0031] S41, plate cutting: according to the two-dimensional drawing, use numerical control laser cutting machine to cut the plate, in the cutting process, the cutting quality can be ensured by adjusting the laser power, cutting speed and gas flow;

[0032] S42, curved surface forming: for the free-form modeling of the curtain wall petal, a combination of numerical control roll bending machine and hydraulic forming machine is adopted for processing. First, the numerical control roll bending machine is used to preliminarily bend and form the plate, so that it generally conforms to the curved surface shape, and then the hydraulic forming machine is used to accurately form the curved surface of the plate. Through the accurate control of the mold, high-precision processing of the petal curved surface is realized. In the forming process, a three-dimensional laser scanning device is used to monitor the workpiece in real time. The actual shape is compared with the design model, and the processing parameters are adjusted in time to ensure the processing precision.

[0033] S43, edge processing and punching: the edges of the cut curtain wall petals are milled to remove burrs and oxide layers, ensuring the flatness and smoothness of the edges. According to the installation requirements, punching operations are performed on the curtain wall petals. A numerical control drilling machine is used to ensure the accuracy and consistency of the hole positions. In addition, a laser punching machine is used to form a plurality of micro grooves on the surface to be sprayed on the curtain wall petals.

[0034] As a preferred scheme of the forming process of the irregular shape of the curtain wall petal, the specific steps of S5 are as follows:

[0035] S51, pretreatment: the processed curtain wall petals are subjected to degreasing, pickling and alkaline cleaning to remove surface oil, scale and impurities, improve the adhesion of the coating, and then subjected to water washing and drying treatment to ensure a clean and dry surface.

[0036] S52, fluorocarbon spraying: electrostatic spraying process is used for fluorocarbon coating construction. The pretreated curtain wall petals are hung on the spraying line, and fluorocarbon paint is sprayed uniformly on the surface of the curtain wall petals through the spray gun. During the spraying process, the distance, angle and spraying pressure of the spray gun are controlled to ensure uniform thickness of the coating. After spraying, the curtain wall petals are sent to the curing oven for high-temperature curing. The curing temperature and time are reasonably controlled according to the characteristics of the paint to ensure the hardness and adhesion of the coating. During the spraying process, the fluorocarbon paint fills the micro grooves to further improve the adhesion of the fluorocarbon coating.

[0037] As a preferred scheme of the forming process of the irregular shape of the curtain wall petal, the specific steps of S6 are as follows:

[0038] S61, dimensional accuracy inspection: a three-coordinate measuring instrument is used to comprehensively detect the size of the processed curtain wall petals. The actual size is compared with the design size to ensure that the dimensional deviation is within the allowable range. For key dimensions, including the length, width, thickness and curved surface radius of the petals, key detection is required.

[0039] S62, surface quality inspection: the surface quality of the petal is inspected through visual inspection and touch inspection to check whether there are scratches, dents, bubbles, sagging defects on the surface, ensure that the surface coating is uniform, smooth, and the color is consistent, at the same time, the thickness of the fluorocarbon coating is detected by using a coating thickness gauge to ensure that the coating thickness meets the design requirements;

[0040] S63, mechanical property inspection: a certain number of petal samples are taken out for mechanical property test, including tensile strength, bending strength and hardness.

[0041] As a preferred scheme of the forming process of the irregular shape of the curtain wall petal, wherein the specific steps of S7 are as follows:

[0042] S71: according to the shape and size of the curtain wall petal, a special packaging scheme is designed, and the packaging material is selected as a buffer material, including foamed plastic and sponge, to prevent collision and damage during transportation;

[0043] S72: a logistics transportation company with rich experience is selected to ensure the safety and timely delivery of goods to the construction site, and the goods are tracked in real time during transportation to ensure the controllability of the transportation process.

[0044] As a preferred scheme of the forming process of the irregular shape of the curtain wall petal, wherein the specific steps of S8 are as follows:

[0045] S81: an installation operation platform is built on the construction site to ensure the stability and safety of the platform, and the installation personnel are technically briefed and safety trained to make them familiar with the installation process and technical requirements, and the curtain wall petals on site are re-inspected to ensure that the quality and quantity meet the requirements;

[0046] S82: according to the design drawings and on-site measurement data, the curtain wall petals are accurately positioned using a total station, the bottom curtain wall petals are installed first, the position and angle of the connecting piece are adjusted to ensure the perpendicularity and levelness of the petals, then the other curtain wall petals are installed in sequence from bottom to top and from left to right, the petals are firmly connected with the main structure using bolts and connecting pieces, and the installation position is monitored in real time using a three-dimensional laser scanning device during installation to ensure the installation accuracy;

[0047] S83: after installation, the gaps between the curtain wall petals are sealed, silicone sealant is used to fill the gaps to ensure that the sealant is full and flat, and prevent rainwater leakage, at the same time, waterproof treatment is carried out at the edge and closing of the curtain wall, waterproof rubber strips and water baffle are installed to ensure the waterproof performance of the curtain wall.

[0048] As a preferred scheme of the forming process of the curtain wall petal irregular shape, the raw materials of the fluorocarbon paint include fluororesin 20-30 parts, pigment 6-8 parts, filler 4-8 parts, solvent 2-6 parts, additive 4-10 parts, nano titanium dioxide 4-8 parts and nano zinc oxide 4-8 parts.

[0049] As a preferred scheme of the forming process of the curtain wall petal irregular shape, the preparation steps of the fluorocarbon paint are as follows:

[0050] Step one: the fluororesin, pigment, filler and solvent are mixed to obtain a mixture A;

[0051] Step two: the mixture A is ground and dispersed;

[0052] Step three: the mixture A, additive, nano titanium dioxide and nano zinc oxide are mixed to obtain the fluorocarbon paint;

[0053] Step four: the fluorocarbon paint is filtered.

[0054] Compared with the prior art,

[0055] The present application can not only ensure the design accuracy, but also reduce material waste and processing difficulty, and meet the high requirement of irregular shape on design accuracy by deepening design and digital modeling with multiple software, and optimizing structure by means of three-dimensional model simulation analysis.

[0056] The present application can greatly guarantee the processing precision by using three-dimensional laser scanning equipment for real-time monitoring in combination with numerical control roll bending machine and hydraulic forming machine, and selecting numerical control equipment such as laser cutting machine and numerical control drilling machine in each link of material processing, and improving the automation and precision of processing.

[0057] The present application can effectively guarantee the structural safety and ensure that the product meets the actual use requirement by adding wind pressure and anti-seismic analysis, and simulating the mechanical properties of the curtain wall under different working conditions by means of professional software.

[0058] The present application can make the fluorocarbon paint enter the micro groove to further improve the adhesion of the fluorocarbon coating by forming a plurality of micro grooves on the surface to be sprayed of the curtain wall petal when fluorocarbon spraying is carried out. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail.

[0060] The present application provides a forming process of curtain wall petal irregular shape.

[0061] The steps include the following:

[0062] S1: The designer closely cooperates with the curtain wall engineer, based on the architectural design drawings, uses computer-aided design and computer-aided engineering software to further design the shape of the curtain wall petals, fully considers the processing technology, installation sequence and structural rationality, and ensures the implementability of the design scheme;

[0063] S2: According to the design scheme, the wind pressure and seismic analysis of the curtain wall petals are carried out;

[0064] The specific steps of S2 are as follows:

[0065] S21: Wind pressure analysis is carried out on the curtain wall petals;

[0066] The specific steps of S21 are as follows:

[0067] S211: Model establishment: using ANSYS or ABAQUS software, according to the actual size, material properties and connection mode of the curtain wall petals, a precise three-dimensional finite element model is established, for complex curved surfaces, appropriate element types are needed to accurately simulate their geometric shape and mechanical behavior, and the element types include shell elements, solid elements;

[0068] S212: Loading and boundary conditions: according to the local meteorological data and building specifications, the design wind pressure value is determined, the wind pressure is loaded on the outer surface of the curtain wall petals in the form of uniform or non-uniform distribution, and the different action directions of the wind are considered, in the model, the connection points of the curtain wall and the main structure are fixed to simulate the actual boundary constraint conditions;

[0069] S213: Analysis and result evaluation: through software calculation, the stress, strain distribution and deformation of the curtain wall petals under the action of wind pressure are obtained, the stress concentrated areas are focused on, including the edges of the petals and the connection nodes, to ensure that the stress values in these areas are within the allowable stress range of the material, at the same time, it is checked whether the maximum deformation of the petals meets the design specifications and use requirements, to avoid affecting the sealing and aesthetics of the curtain wall due to excessive deformation;

[0070] S22: Seismic analysis is carried out on the curtain wall petals;

[0071] The specific steps of S22 are as follows:

[0072] S221: Model establishment and parameter setting: using ANSYS or ABAQUS software, according to the actual size, material properties and connection mode of the curtain wall petals, a precise three-dimensional finite element model is established, considering the dynamic mechanical performance parameters of the material when the earthquake acts, in addition, according to the seismic fortification intensity, site category and other factors of the building located area, the type and peak acceleration of the seismic wave are determined;

[0073] S222: Load and calculate: load seismic waves into the model, which adopts the method of inputting acceleration at the bottom to simulate seismic excitation, and conduct one-way and two-way seismic analysis respectively to comprehensively evaluate the response of the curtain wall petal under different seismic actions;

[0074] S223: Result analysis and strength checking: analyze the stress, strain and displacement response of the model under seismic action, evaluate the seismic capacity of the curtain wall petal, and check whether there is a possibility of local damage or overall instability, and for key parts including connection nodes and areas prone to stress concentration, detailed strength checking is carried out to ensure that the curtain wall structure can maintain its integrity and stability under the design seismic action and meet the requirements of seismic design specifications;

[0075] S3: Establish an accurate three-dimensional model of the curtain wall petal, and export data from the established three-dimensional model;

[0076] The specific steps of S3 are as follows:

[0077] S31: Use three-dimensional modeling software, including Rhino and 3ds Max, to establish an accurate three-dimensional model of the curtain wall petal, which includes detailed geometric dimensions, surface information and connection nodes. After the model is established, it will be simulated and analyzed to optimize the structure of the petal and reduce material waste and processing difficulty;

[0078] S32: Convert the three-dimensional model data into a format that can be recognized by numerical control machining equipment, and export the two-dimensional drawings required for machining, with detailed dimensions, tolerances and technical requirements;

[0079] S4: Process the material according to the exported data, including plate cutting, curved surface forming, edge treatment and punching, to obtain the curtain wall petal;

[0080] The specific steps of S4 are as follows:

[0081] S41, plate cutting: according to the two-dimensional drawing, use a numerical control laser cutting machine to cut the plate. During the cutting process, the laser power, cutting speed and gas flow can be adjusted to ensure the cutting quality;

[0082] S42, curved surface forming: for the free curved surface modeling of the curtain wall petal, a combination of numerical control roll bending machine and hydraulic forming machine is used for processing. First, the plate is preliminarily bent and formed by the numerical control roll bending machine to roughly conform to the curved surface shape, and then the plate is accurately curved and formed by the hydraulic forming machine. Through the precise control of the mold, high-precision processing of the petal curved surface is realized. During the forming process, a three-dimensional laser scanning device is used to monitor the workpiece in real time, compare the actual shape with the design model, and adjust the processing parameters in time to ensure the processing precision.

[0083] S43, edge processing and punching: milling processing is performed on the edges of the cut curtain wall petals to remove burrs and oxide layers, to ensure the flatness and smoothness of the edges, and punching operations are performed on the curtain wall petals according to installation requirements, numerical control drilling machines are used to ensure the accuracy and consistency of the hole positions, and in addition, a laser punching machine is used to form a plurality of micro grooves on the surface to be sprayed of the curtain wall petals;

[0084] S5: processing the surface of the curtain wall petals, including pretreatment and fluorocarbon spraying;

[0085] The specific steps of S5 are as follows:

[0086] S51, pretreatment: degreasing, pickling and alkaline cleaning treatment are performed on the processed curtain wall petals to remove oil stains, oxide scales and impurities on the surface, improve the adhesion of the coating, and after pretreatment, the petals are washed with water and dried to ensure that the surface is clean and dry;

[0087] S52, fluorocarbon spraying: electrostatic spraying process is used for fluorocarbon coating construction, the pretreated curtain wall petals are hung on the spraying line, and fluorocarbon paint is uniformly sprayed on the surface of the curtain wall petals through a spray gun, during the spraying process, the distance, angle and spraying pressure of the spray gun are controlled to ensure uniform thickness of the coating, after spraying, the curtain wall petals are sent into a curing oven for high-temperature curing, the curing temperature and time are reasonably controlled according to the characteristics of the paint to ensure the hardness and adhesion of the coating, wherein, during the spraying process, the fluorocarbon paint fills the micro grooves to further improve the adhesion of the fluorocarbon coating;

[0088] The raw materials of the fluorocarbon paint include, by weight: 20-30 parts of fluororesin, 6-8 parts of pigment, 4-8 parts of filler, 2-6 parts of solvent, 4-10 parts of additive, 4-8 parts of nano titanium dioxide, and 4-8 parts of nano zinc oxide;

[0089] Among them:

[0090] Regarding the pigment: the pigment includes inorganic pigments and organic pigments, the inorganic pigments include but are not limited to titanium white, iron oxide red, chrome yellow, and have good hiding power and weather resistance; the organic pigments include but are not limited to phthalocyanine blue, quinacridone red, etc., and have bright colors and strong coloring power;

[0091] Regarding the filler: the filler includes but is not limited to calcium carbonate, barium sulfate, talc, and kaolin, which can increase the volume of the paint, reduce the cost, and at the same time improve the physical properties of the paint, such as increasing the hardness, wear resistance and anti-settling property, etc.;

[0092] Regarding the solvent: the solvent includes but is not limited to toluene, xylene, butyl acetate, ketone acetone, ethanol;

[0093] About additives: additives include but are not limited to:

[0094] Leveling agents: can promote the formation of a smooth, flat surface after the coating, reduce defects such as flow marks, orange peel; common leveling agents are acrylate, silicone and fluorocarbon, etc.

[0095] Dispersants: help pigments and fillers in the coating evenly dispersed, prevent agglomeration and precipitation, improve the stability and storage of the coating; the type of dispersant includes anionic, cationic, nonionic and amphoteric, etc.

[0096] Defoamers: used to eliminate bubbles produced in the production and construction process of the coating, to avoid bubbles affecting the appearance and performance of the coating; silicone defoamer and polyether defoamer are commonly used types;

[0097] Curing agents: for two-component or multi-component fluorocarbon coatings, curing agent with fluororesin crosslinking reaction, so that the coating is cured into a film; commonly used curing agents are isocyanate, amine, etc.; the type and amount of curing agent has an important influence on the performance of the coating film such as hardness, adhesion, chemical resistance, etc.

[0098] About nano titanium dioxide:

[0099] Improving weather resistance: nano titanium dioxide has good ultraviolet absorption capacity and photocatalytic activity, can effectively decompose the organic pollutants on the surface of the coating, prevent the coating from aging, powdering, and prolong the service life of the fluorocarbon coating;

[0100] Self-cleaning function: under light, nano titanium dioxide can decompose organic matter on the surface of the coating, making it difficult for stains to adhere, achieving self-cleaning effect and keeping the surface of the coating clean and beautiful;

[0101] About nano zinc oxide:

[0102] Enhancing corrosion resistance: nano zinc oxide has a large specific surface area and high activity, can fill the micropores in the coating, improve the density of the coating, and hinder the penetration of corrosive medium, thereby enhancing the corrosion resistance of the fluorocarbon coating;

[0103] Antibacterial performance: nano zinc oxide has certain antibacterial properties, which can inhibit the growth of bacteria, mold and other microorganisms on the surface of the coating, preventing the coating from being damaged by microbial growth;

[0104] The preparation steps of the fluorocarbon coating are as follows:

[0105] Step one: mix the fluororesin, pigment, filler and solvent to obtain mixture A;

[0106] Step two: grind and disperse mixture A;

[0107] Step three: mix mixture A, auxiliary agent, nano titanium dioxide and nano zinc oxide to obtain fluorocarbon coating;

[0108] Step four: filter the fluorocarbon coating;

[0109] S6: detect the quality of the curtain wall petal, including size accuracy test, surface quality test and mechanical property test;

[0110] The specific steps of S6 are as follows:

[0111] S61, size accuracy test: use a three-coordinate measuring instrument to comprehensively detect the size of the finished curtain wall petal, compare the actual size with the design size, and ensure that the size deviation is within the allowable range. For key dimensions, including the length, width, thickness and curved radius of the petal, key detection is required;

[0112] S62, surface quality test: check the surface quality of the petal by visual inspection and touch inspection to check whether there are scratches, dents, bubbles, sagging defects on the surface, ensure that the surface coating is uniform, smooth and color consistent. At the same time, use a coating thickness gauge to detect the thickness of the fluorocarbon coating to ensure that the coating thickness meets the design requirements;

[0113] S63, mechanical property test: take a certain number of petal samples for mechanical property test, including tensile strength, bending strength and hardness;

[0114] S7: package and transport the curtain wall petal that meets the quality requirements;

[0115] The specific steps of S7 are as follows:

[0116] S71: according to the shape and size of the curtain wall petal, design a special packaging scheme, and the packaging material is selected as a buffer material, including foamed plastic and sponge, to prevent collision and damage during transportation;

[0117] S72: choose a logistics transportation company with rich experience to ensure the safety and timely delivery of goods to the construction site. During transportation, track the goods in real time to timely grasp the transportation status and ensure the controllability of the transportation process;

[0118] S8: install the curtain wall petal after transportation on site;

[0119] The specific steps of S8 are as follows:

[0120] S81: build an installation operation platform at the construction site to ensure the stability and safety of the platform, and conduct technical briefing and safety training for the installation personnel to make them familiar with the installation process and technical requirements. At the same time, recheck the curtain wall petal on site to ensure that its quality and quantity meet the requirements;

[0121] S82: According to the design drawings and on-site measurement data, use the total station to accurately position the curtain wall petals, first install the bottom curtain wall petals, adjust the position and angle of the connecting piece to ensure the perpendicularity and levelness of the petals, then install the other curtain wall petals in order from bottom to top and from left to right, use bolts and connecting pieces to firmly connect the petals with the main structure, and use the three-dimensional laser scanning device to monitor the installation position in real time to ensure the installation accuracy;

[0122] S83: After installation, seal the gaps between the curtain wall petals, fill the gaps with silicone sealant to ensure the fullness and flatness of the sealant and prevent rainwater leakage, and at the same time, waterproof the edges and closing of the curtain wall, install waterproof rubber strips and water baffle to ensure the waterproof performance of the curtain wall.

[0123] Although the present application has been described with reference to the embodiments above, various improvements can be made thereto and equivalents can be substituted therefor without departing from the scope of the present application. In particular, each of the features disclosed in the embodiments of the present application can be used in any combination unless there is a structural conflict and the combinations are not described in the specification only for the purpose of omitting the description and saving resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A forming process for curtain wall petals in irregular shapes, characterized in that, The steps include the following: S1: The designer closely cooperates with the curtain wall engineer, based on the architectural design drawings, uses computer-aided design and computer-aided engineering software to further design the shape of the curtain wall petals, fully considers the processing technology, installation sequence and structural rationality, and ensures the implementability of the design scheme; S2: According to the design scheme, the wind pressure and seismic resistance of the curtain wall petals are analyzed; S3: An accurate three-dimensional model of the curtain wall petals is established, and the established three-dimensional model is exported; S4: According to the exported data, the materials are processed, including plate cutting, curved surface forming, edge processing and punching, to obtain the curtain wall petals; S5: The surface of the curtain wall petals is treated, including pretreatment and fluorocarbon spraying; S6: The quality of the curtain wall petals is detected, including size accuracy inspection, surface quality inspection and mechanical property inspection; S7: The curtain wall petals with qualified quality are packaged and transported; S8: The curtain wall petals after transportation are installed on site; The specific steps of S2 are as follows: S21: Wind pressure analysis is performed on the curtain wall petals; S22: Seismic resistance analysis is performed on the curtain wall petals; The specific steps of S21 are as follows: S211: Model establishment: using ANSYS or ABAQUS software, an accurate three-dimensional finite element model is established according to the actual size, material properties and connection mode of the curtain wall petals, for complex curved surfaces, appropriate element types are adopted to accurately simulate their geometric shape and mechanical behavior, and the element types include shell elements and solid elements; S212: Loading and boundary conditions: according to local meteorological data and building specifications, the design wind pressure value is determined, the wind pressure is loaded on the outer surface of the curtain wall petals in the form of uniform or non-uniform distribution, the different directions of wind are considered, the connection points of the curtain wall and the main structure are fixed in the model to simulate the actual boundary constraint conditions; S213: Analysis and result evaluation: through software calculation, the stress, strain distribution and deformation of the curtain wall petals under the action of wind pressure are obtained, the stress concentrated areas are focused on, including the edges of the petals and the connection nodes, to ensure that the stress values in the areas are within the allowable stress range of the material, at the same time, the maximum deformation of the petals is checked to see whether it meets the design specifications and use requirements, to avoid affecting the sealing and aesthetics of the curtain wall due to excessive deformation; The specific steps of S22 are as follows: S221: Model establishment and parameter setting: using ANSYS or ABAQUS software, an accurate three-dimensional finite element model is established according to the actual size, material properties and connection mode of the curtain wall petals, when considering the seismic action, the dynamic mechanical performance parameters of the material need to be defined, in addition, according to the seismic fortification intensity and site category of the building, the type and peak acceleration of the seismic wave are determined; S222: Loading and calculation: the seismic wave is loaded into the model, which adopts the method of bottom input acceleration to simulate the seismic excitation, and one-way and two-way seismic analysis is performed to comprehensively evaluate the response of the curtain wall petals under different seismic actions; S223: Result analysis and strength check: analyze the stress, strain and displacement response of the model under seismic action, evaluate the seismic capacity of the curtain wall petals, check whether there is a possibility of local damage or overall instability, and perform detailed strength check on key parts including connection nodes and areas prone to stress concentration, to ensure that the curtain wall structure can maintain its integrity and stability under design seismic action and meet the requirements of seismic design specifications.

2. The process according to claim 1, wherein, The specific steps of S3 are as follows: S31: Use three-dimensional modeling software, including Rhino and 3ds Max, to establish an accurate three-dimensional model of the curtain wall petals, which includes detailed geometric dimensions, surface information and connection nodes. After the model is established, it will be simulated and analyzed to optimize the structure of the petals and reduce material waste and processing difficulty; S32: Convert the three-dimensional model data into a format that can be recognized by numerical control machining equipment, and export the two-dimensional drawings required for machining, with detailed dimensions, tolerances and technical requirements marked.

3. The process as claimed in claim 1, wherein, The specific steps of S4 are as follows: S41, plate cutting: according to the two-dimensional drawing, use a numerical control laser cutting machine to cut the plate, and during the cutting process, adjust the laser power, cutting speed and gas flow to ensure the cutting quality; S42, curved surface forming: for the free curved surface modeling of the curtain wall petals, use a combination of numerical control roll bending machine and hydraulic forming machine for processing. First, use the numerical control roll bending machine to preliminarily bend and form the plate to roughly conform to the curved surface shape, and then use the hydraulic forming machine to accurately form the curved surface of the plate. Through the precise control of the mold, high-precision processing of the petal curved surface is realized. During the forming process, use a three-dimensional laser scanning device to monitor the workpiece in real time, compare the actual shape with the design model, and adjust the processing parameters in a timely manner to ensure the processing precision; S43, edge treatment and punching: mill the edges of the cut curtain wall petals to remove burrs and oxidation layers, ensuring the flatness and smoothness of the edges. According to the installation requirements, punch holes on the curtain wall petals using a numerical control drilling machine to ensure the accuracy and consistency of the hole positions. In addition, use a laser punching machine to form a number of micro grooves on the surface to be sprayed on the curtain wall petals.

4. The process as claimed in claim 1, wherein, The specific steps of S5 are as follows: S51, pretreatment: degrease, acid wash and alkali wash the processed curtain wall petals to remove oil stains, oxidation scales and impurities on the surface, improve the adhesion of the coating, and then wash and dry the petals to ensure a clean and dry surface; S52, fluorocarbon spraying: use electrostatic spraying process to apply fluorocarbon coating on the pretreated curtain wall petals. Hang the curtain wall petals on the spraying line and use a spray gun to evenly spray fluorocarbon paint on the surface of the curtain wall petals. Control the distance, angle and spraying pressure of the spray gun during the spraying process to ensure uniform thickness of the coating. After spraying, put the curtain wall petals into a curing oven for high-temperature curing. The curing temperature and time are controlled according to the characteristics of the paint to ensure the hardness and adhesion of the coating. During the spraying process, the fluorocarbon paint fills the micro grooves to further improve the adhesion of the fluorocarbon coating.

5. The process as claimed in claim 1, wherein, The specific steps of S6 are as follows: S61, dimensional accuracy inspection: use a three-coordinate measuring instrument to comprehensively detect the size of the completed curtain wall petals, compare the actual size with the design size, and ensure that the dimensional deviation is within the allowable range. For key dimensions, including the length, width, thickness and curved surface radius of the petals, key detection is required; S62, surface quality inspection: check the surface quality of the petals through visual inspection and touch inspection to check whether there are scratches, dents, bubbles, sagging defects on the surface, ensure that the surface coating is uniform, smooth and consistent in color, and at the same time, use a coating thickness gauge to detect the thickness of the fluorocarbon coating to ensure that the coating thickness meets the design requirements; S63, mechanical property inspection: take a certain number of petal samples for mechanical property testing, including tensile strength, bending strength and hardness.

6. The process as claimed in claim 1, wherein, The specific steps of S7 are as follows: S71: According to the shape and size of the curtain wall petals, a special packaging scheme is designed, and the packaging material is selected as a buffer material, including foam plastic and sponge, to prevent collision and damage during transportation; S72: Select a logistics transportation company with rich experience to ensure the safe and timely delivery of goods to the construction site. During transportation, real-time tracking of goods is carried out to timely grasp the transportation status and ensure the controllability of the transportation process.

7. The process as claimed in claim 1, wherein, The specific steps of S8 are as follows: S81: Build an installation platform at the construction site to ensure the stability and safety of the platform. Provide technical briefing and safety training to the installation personnel to make them familiar with the installation process and technical requirements. At the same time, re-inspect the curtain wall petals on site to ensure that their quality and quantity meet the requirements; S82: According to the design drawings and on-site measurement data, use a total station to accurately position the curtain wall petals. First, install the bottom curtain wall petals, adjust the position and angle of the connecting parts to ensure the perpendicularity and levelness of the petals, then install the other curtain wall petals in order from bottom to top and from left to right, and use bolts and connecting parts to firmly connect the petals with the main structure. During installation, use a three-dimensional laser scanning device to monitor the installation position in real time to ensure the installation accuracy; S83: After installation, seal the gaps between the curtain wall petals with silicone sealant to ensure that the sealant is full and smooth, preventing water leakage. At the same time, waterproof treatment is carried out at the edge and closing of the curtain wall, waterproof rubber strips and water baffle are installed to ensure the waterproof performance of the curtain wall.

8. The process of claim 4, wherein, The raw materials of the fluorocarbon coating include: 20-30 parts of fluororesin, 6-8 parts of pigment, 4-8 parts of filler, 2-6 parts of solvent, 4-10 parts of additive, 4-8 parts of nano titanium dioxide and 4-8 parts of nano zinc oxide.

9. The process of claim 8, wherein, The preparation steps of the fluorocarbon coating are as follows: Step one: mix fluororesin, pigment, filler and solvent to obtain mixture A; Step two: grind and disperse mixture A; Step three: mix mixture A, additive, nano titanium dioxide and nano zinc oxide to obtain fluorocarbon coating; Step four: filter the fluorocarbon coating.